/* ============================================================
   AiAgent.edu.vn — Light Theme  |  Style: pi2.vn inspired
   ============================================================ */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  /* Backgrounds */
  --bg:          #FFFFFF;
  --bg-2:        #F7F8FA;
  --bg-card:     #FFFFFF;
  --bg-card-2:   #F2F3F5;

  /* Borders */
  --border:      rgba(0,0,0,0.08);
  --border-hover:rgba(0,0,0,0.16);

  /* Text */
  --text:        #111111;
  --text-2:      #555555;
  --text-3:      #999999;

  /* Accent */
  --accent:      #E5383B;
  --accent-dim:  rgba(229,56,59,0.08);
  --accent-2:    #FF6B35;
  --accent-2-dim:rgba(255,107,53,0.08);
  --gold:        #D97706;

  /* Dark sections (footer, code card) */
  --dark-bg:     #0A0A0A;
  --dark-bg-2:   #141414;
  --dark-border: rgba(255,255,255,0.08);

  --radius-sm:  6px;
  --radius:     12px;
  --radius-lg:  20px;

  --font: 'Be Vietnam Pro', system-ui, sans-serif;
  --transition: 0.2s ease;

  --shadow-sm:  0 1px 4px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
  --shadow:     0 4px 16px rgba(0,0,0,0.08), 0 1px 4px rgba(0,0,0,0.04);
  --shadow-lg:  0 12px 40px rgba(0,0,0,0.10), 0 2px 8px rgba(0,0,0,0.06);
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a { text-decoration: none; color: inherit; }
img { max-width: 100%; }

.container {
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 24px;
}

.gradient-text {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-2) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.accent { color: var(--accent); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  font-family: var(--font);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all var(--transition);
  white-space: nowrap;
}
.btn--primary {
  background: var(--accent);
  color: #fff;
}
.btn--primary:hover {
  background: #CC2527;
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(229,56,59,0.35);
}
.btn--ghost {
  background: transparent;
  color: var(--text-2);
  border: 1px solid var(--border);
}
.btn--ghost:hover { border-color: var(--border-hover); color: var(--text); }
.btn--outline {
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--accent);
}
.btn--outline:hover { background: var(--accent-dim); }
.btn--lg { padding: 14px 28px; font-size: 15px; }

/* ---------- Section ---------- */
.section { padding: 96px 0; }
.section__header { text-align: center; margin-bottom: 60px; }
.section__tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 14px;
  border-radius: 100px;
  border: 1px solid rgba(229,56,59,0.3);
  color: var(--accent);
  background: var(--accent-dim);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 16px;
}
.section__title {
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 16px;
  color: var(--text);
}
.section__desc {
  font-size: 16px;
  color: var(--text-2);
  max-width: 520px;
  margin: 0 auto;
}

/* ---------- Badges ---------- */
.badge {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 100px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.04em;
}
.badge--green { background: rgba(34,197,94,0.1); color: #16A34A; }
.badge--red   { background: var(--accent-dim); color: var(--accent); }
.badge--gold  { background: rgba(217,119,6,0.1); color: var(--gold); }

/* ============================================================
   HEADER
   ============================================================ */
/* Announcement bar */
.announce-bar {
  background: linear-gradient(90deg, #B91C1C 0%, #E5383B 50%, #B91C1C 100%);
  text-align: center;
  padding: 9px 16px;
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 101;
}
.announce-bar__link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: #fff;
  font-size: 13px;
  font-weight: 500;
  text-decoration: none;
  flex-wrap: wrap;
  justify-content: center;
}
.announce-bar__link strong {
  font-weight: 800;
  font-size: 14px;
}
.announce-bar__link:hover { opacity: 0.9; }
.has-announce .header { top: var(--announce-h, 36px); }

.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  transition: background var(--transition), box-shadow var(--transition);
  border-bottom: 1px solid transparent;
}
.header.scrolled {
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(16px);
  border-bottom-color: var(--border);
  box-shadow: var(--shadow-sm);
}
.header__inner {
  display: flex;
  align-items: center;
  gap: 40px;
  height: 68px;
}
.header__logo {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
  height: 36px;
}
.header__logo-img {
  height: 30px;
  width: auto;
  display: block;
}
.header__logo-text {
  font-size: 22px;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text);
}
.header__logo-text .accent {
  color: #DC2626;
}
.header__nav {
  display: flex;
  align-items: center;
  gap: 32px;
  margin-right: auto;
}
.header__nav a {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-2);
  transition: color var(--transition);
}
.header__nav a:hover { color: var(--text); }
.header__actions { display: flex; align-items: center; gap: 12px; }
.header__burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none; border: none;
  cursor: pointer; padding: 4px;
  margin-left: auto;
}
.header__burger span {
  display: block; width: 22px; height: 2px;
  background: var(--text); border-radius: 2px;
  transition: all var(--transition);
}

/* ============================================================
   HERO  (light bg + dark code card on right)
   ============================================================ */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  padding: 156px 0 80px;
  overflow: hidden;
  background: var(--bg);
}
.hero__bg-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(229,56,59,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(229,56,59,0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 70% 70% at 50% 40%, black 30%, transparent 100%);
}
/* subtle red glow top-right */
.hero::after {
  content: '';
  position: absolute;
  top: -80px; right: -80px;
  width: 480px; height: 480px;
  background: radial-gradient(circle, rgba(229,56,59,0.07) 0%, transparent 70%);
  pointer-events: none;
}
.hero__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 1;
}
.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: 100px;
  background: var(--accent-dim);
  border: 1px solid rgba(229,56,59,0.2);
  font-size: 13px;
  color: var(--accent);
  font-weight: 500;
  margin-bottom: 24px;
  grid-column: 1;
}
.badge-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--accent);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(229,56,59,0.4); }
  50%       { opacity: 0.7; box-shadow: 0 0 0 4px rgba(229,56,59,0); }
}
.hero__title {
  font-size: clamp(32px, 5vw, 64px);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
  grid-column: 1;
  color: var(--text);
}
.hero__desc {
  font-size: 17px;
  color: var(--text-2);
  line-height: 1.7;
  margin-bottom: 36px;
  grid-column: 1;
}
.hero__actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 48px;
  grid-column: 1;
}
.hero__stats {
  display: flex;
  align-items: center;
  gap: 24px;
  grid-column: 1;
}
.stat__number { display: block; font-size: 22px; font-weight: 800; color: var(--text); }
.stat__label  { display: block; font-size: 13px; color: var(--text-2); }
.stat__divider { width: 1px; height: 36px; background: var(--border); }

/* Code card stays dark — terminal feel */
.hero__visual {
  grid-column: 2;
  grid-row: 1 / 6;
  display: flex;
  justify-content: center;
  align-items: center;
}
.agent-card {
  background: #141414;
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-lg);
  overflow: hidden;
  width: 100%;
  max-width: 460px;
  box-shadow: var(--shadow-lg), 0 0 0 1px rgba(229,56,59,0.12);
}
.agent-card__header {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 12px 16px;
  border-bottom: 1px solid rgba(255,255,255,0.07);
  background: #1A1A1A;
}
.agent-dot         { width: 12px; height: 12px; border-radius: 50%; background: #FF5F57; }
.agent-dot--yellow { background: #FFBD2E; }
.agent-dot--green  { background: #28CA41; }
.agent-card__body {
  padding: 20px;
  font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
  font-size: 13px;
  line-height: 1.8;
  color: #E0E0E0;
}
.code-kw      { color: #FF79C6; }
.code-fn      { color: #50FA7B; }
.code-mod     { color: #8BE9FD; }
.code-str     { color: #F1FA8C; }
.code-comment { color: #6272A4; }
.code-line--active {
  background: rgba(229,56,59,0.08);
  border-radius: 4px;
  padding: 2px 4px; margin: 0 -4px;
}
.code-cursor {
  color: var(--accent);
  animation: blink 1s step-end infinite;
}
@keyframes blink { 0%, 100% { opacity: 1; } 50% { opacity: 0; } }

/* ============================================================
   TRUSTED BY
   ============================================================ */
.trusted {
  padding: 32px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: var(--bg-2);
}
.trusted__label {
  text-align: center;
  font-size: 12px;
  color: var(--text-3);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 24px;
}
.trusted__logos {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 48px;
  flex-wrap: wrap;
}
.trusted__logo {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-3);
  letter-spacing: 0.05em;
  transition: color var(--transition);
}
.trusted__logo:hover { color: var(--text-2); }

/* ============================================================
   TYPING EFFECT
   ============================================================ */
.typing-wrapper { display: inline; color: var(--accent); font-weight: 600; }
.typing-cursor-hero {
  display: inline-block;
  width: 2px; height: 0.85em;
  background: var(--accent);
  margin-left: 2px;
  vertical-align: middle;
  animation: blink 1s step-end infinite;
  border-radius: 1px;
}

/* ============================================================
   PAIN SECTION
   ============================================================ */
.pain { background: var(--bg); }
.pain__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.pain-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition), transform var(--transition);
}
.pain-card:hover { box-shadow: var(--shadow); transform: translateY(-3px); }
.pain-card__icon { font-size: 28px; margin-bottom: 14px; display: block; }
.pain-card h3 { font-size: 15px; font-weight: 700; margin-bottom: 8px; color: var(--text); }
.pain-card p  { font-size: 13px; color: var(--text-2); line-height: 1.7; }
.pain-card__quote {
  margin-top: 14px;
  padding: 10px 14px;
  border-left: 2px solid var(--accent);
  background: var(--accent-dim);
  border-radius: 0 6px 6px 0;
  font-size: 13px;
  color: var(--text-2);
  font-style: italic;
}

/* ============================================================
   HOW IT WORKS
   ============================================================ */
.steps { background: var(--bg-2); }
.steps__flow {
  display: grid;
  grid-template-columns: 1fr 40px 1fr 40px 1fr;
  gap: 0;
  align-items: center;
  max-width: 900px;
  margin: 0 auto;
}
.step-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition), transform var(--transition);
}
.step-card:hover { box-shadow: var(--shadow); transform: translateY(-4px); }
.step-card__num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px; height: 40px;
  border-radius: 50%;
  background: var(--accent-dim);
  border: 1px solid rgba(229,56,59,0.2);
  font-size: 16px; font-weight: 900;
  color: var(--accent);
  margin-bottom: 16px;
}
.step-card__icon { font-size: 36px; margin-bottom: 12px; display: block; }
.step-card h3 { font-size: 16px; font-weight: 800; margin-bottom: 8px; color: var(--text); }
.step-card p  { font-size: 13px; color: var(--text-2); line-height: 1.6; }
.step-card__example {
  margin-top: 14px;
  background: #141414;
  border-radius: 8px;
  padding: 10px 12px;
  font-size: 12px;
  color: #50FA7B;
  font-family: 'SF Mono', 'Fira Code', monospace;
  text-align: left;
}
.step-arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  opacity: 0.4;
}

/* ============================================================
   ROADMAP
   ============================================================ */
.roadmap { background: var(--bg); }
.roadmap__track {
  position: relative;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.roadmap__line {
  position: absolute;
  top: 28px;
  left: calc(12.5% + 24px);
  right: calc(12.5% + 24px);
  height: 1px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  opacity: 0.2;
}
.roadmap__step {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}
.roadmap__step-number {
  width: 56px; height: 56px;
  border-radius: 50%;
  background: var(--bg-card);
  border: 2px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  font-size: 13px; font-weight: 800;
  color: var(--accent);
  position: relative; z-index: 1; flex-shrink: 0;
  box-shadow: var(--shadow-sm);
}
.roadmap__step-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  width: 100%;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition), transform var(--transition);
}
.roadmap__step-card:hover { box-shadow: var(--shadow); transform: translateY(-4px); }
.roadmap__step-icon  { font-size: 28px; margin-bottom: 12px; }
.roadmap__step-card h3 { font-size: 15px; font-weight: 700; margin-bottom: 8px; color: var(--text); }
.roadmap__step-card p  { font-size: 13px; color: var(--text-2); line-height: 1.6; margin-bottom: 16px; }
.roadmap__step-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 12px;
  color: var(--text-3);
}
.roadmap__list {
  list-style: none;
  padding: 0;
  margin: 0 0 14px;
  display: flex;
  flex-direction: column;
  gap: 5px;
}
.roadmap__list li {
  font-size: 12px;
  color: var(--text-2);
  padding-left: 14px;
  position: relative;
}
.roadmap__list li::before {
  content: '·';
  position: absolute;
  left: 4px;
  color: var(--accent);
  font-weight: 700;
}
.roadmap__result {
  font-size: 12px;
  font-weight: 700;
  color: #16a34a;
}

/* ============================================================
   COURSES
   ============================================================ */
.courses { background: var(--bg-2); }

/* Course single layout */
.course-single {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 40px;
  align-items: start;
}
.course-format-badge {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 28px;
}
.course-format-badge span {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 100px;
  padding: 5px 14px;
  font-size: 13px;
  color: var(--text-2);
  font-weight: 500;
}
.course-single__title {
  font-size: 18px;
  font-weight: 800;
  color: var(--text);
  margin-bottom: 20px;
}
.course-modules {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 28px;
}
.course-module {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 16px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.course-module__num {
  font-size: 12px;
  font-weight: 800;
  color: var(--accent);
  background: var(--accent-dim);
  border-radius: 6px;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.course-module__name {
  font-size: 14px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 3px;
}
.course-module__desc {
  font-size: 13px;
  color: var(--text-2);
  line-height: 1.5;
}
.course-outcomes {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.course-outcome {
  font-size: 14px;
  font-weight: 600;
  color: #16a34a;
}

/* Enroll card */
.course-single__enroll { position: sticky; top: 120px; }
.enroll-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow);
}
.enroll-card__tag {
  display: inline-block;
  background: var(--accent-dim);
  color: var(--accent);
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 3px 10px;
  border-radius: 100px;
  margin-bottom: 16px;
}
.enroll-card__price-orig {
  font-size: 15px;
  color: var(--text-3);
  text-decoration: line-through;
  margin-bottom: 2px;
}
.enroll-card__price-final {
  font-size: 36px;
  font-weight: 900;
  color: #16a34a;
  line-height: 1;
  margin-bottom: 4px;
}
.enroll-card__save {
  font-size: 12px;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 20px;
}
.enroll-card__includes {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 24px;
  padding: 0;
}
.enroll-card__includes li {
  font-size: 13px;
  color: var(--text-2);
}
.enroll-card__note {
  text-align: center;
  font-size: 12px;
  color: var(--text-3);
  margin-top: 10px;
}

/* Keep old card styles for any remnants */
.courses__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  align-items: start;
}
.course-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  position: relative;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition), transform var(--transition);
  display: flex; flex-direction: column;
}
.course-card:hover { box-shadow: var(--shadow); transform: translateY(-4px); }
.course-card--featured {
  border-color: rgba(229,56,59,0.25);
  background: linear-gradient(160deg, rgba(229,56,59,0.04) 0%, #fff 55%);
  box-shadow: var(--shadow), 0 0 0 1px rgba(229,56,59,0.1);
}
.course-card--featured:hover { box-shadow: var(--shadow-lg), 0 0 0 1px rgba(229,56,59,0.15); }
.course-card__badge {
  position: absolute;
  top: -12px; left: 50%;
  transform: translateX(-50%);
  background: var(--accent);
  color: #fff;
  font-size: 11px; font-weight: 700;
  padding: 3px 14px;
  border-radius: 100px;
  white-space: nowrap;
}
.course-card__icon  { font-size: 32px; margin-bottom: 12px; }
.course-card__level { font-size: 11px; color: var(--text-3); text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: 8px; }
.course-card__title { font-size: 18px; font-weight: 800; margin-bottom: 10px; line-height: 1.3; color: var(--text); }
.course-card__desc  { font-size: 13px; color: var(--text-2); line-height: 1.7; margin-bottom: 20px; flex: 1; }
.course-card__features { list-style: none; margin-bottom: 24px; display: flex; flex-direction: column; gap: 6px; }
.course-card__features li { font-size: 13px; color: var(--text-2); }
.course-card__price-block { display: flex; flex-direction: column; gap: 2px; }
.price__label    { font-size: 10px; text-transform: uppercase; letter-spacing: 0.08em; color: var(--text-3); }
.price__original { font-size: 20px; font-weight: 800; color: var(--text); }
.price__note     { font-size: 11px; color: var(--accent); font-style: italic; }
.course-card__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap; gap: 12px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
  margin-top: auto;
}
.price__current { font-size: 18px; font-weight: 800; color: var(--text); }
.price__old     { display: block; font-size: 12px; color: var(--text-3); text-decoration: line-through; }

/* ============================================================
   DEMO  (keep slightly dark feel like a terminal)
   ============================================================ */
.demo { background: var(--bg); }

/* Chatbot showcase */
.chatbot-showcase {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
}
.chatbot-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition), transform var(--transition);
  text-decoration: none;
  display: flex; flex-direction: column;
}
.chatbot-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); }
.chatbot-card:hover .chatbot-card__visit { opacity: 1; }

.chatbot-card__preview {
  height: 220px;
  padding: 24px;
  position: relative;
  display: flex; align-items: flex-end;
}
.chatbot-card__chat-mock {
  display: flex; flex-direction: column; gap: 10px;
  width: 100%;
}
.chat-mock__bubble {
  max-width: 85%;
  padding: 10px 14px;
  border-radius: 12px;
  font-size: 13px;
  line-height: 1.5;
}
.chat-mock__bubble--user {
  background: rgba(255,255,255,0.25);
  color: #fff;
  align-self: flex-end;
  border-bottom-right-radius: 4px;
}
.chat-mock__bubble--bot {
  background: rgba(255,255,255,0.95);
  color: #111;
  align-self: flex-start;
  border-bottom-left-radius: 4px;
  display: flex; flex-direction: column; gap: 3px;
}
.chat-mock__bot-name {
  font-size: 11px; font-weight: 700;
  opacity: 0.6;
}
.chatbot-card__visit {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.35);
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 15px; font-weight: 700;
  opacity: 0;
  transition: opacity 0.2s ease;
  border-radius: 0;
}

.chatbot-card__body { padding: 20px 24px; display: flex; flex-direction: column; gap: 12px; }
.chatbot-card__header { display: flex; align-items: center; gap: 12px; }
.chatbot-card__icon {
  width: 44px; height: 44px; border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  font-size: 22px; flex-shrink: 0;
}
.chatbot-card__name { font-size: 16px; font-weight: 800; color: var(--text); }
.chatbot-card__url { font-size: 12px; color: var(--text-3); font-family: 'SF Mono', monospace; }
.chatbot-card__desc { font-size: 13px; color: var(--text-2); line-height: 1.6; }
.chatbot-card__stats {
  display: flex; gap: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.chatbot-stat {
  flex: 1; text-align: center;
  padding: 10px 8px;
  border-right: 1px solid var(--border);
}
.chatbot-stat:last-child { border-right: none; }
.chatbot-stat__value { font-size: 14px; font-weight: 800; color: var(--text); }
.chatbot-stat__label { font-size: 11px; color: var(--text-3); margin-top: 2px; }

/* ============================================================
   WHY
   ============================================================ */
.why { background: var(--bg-2); }
.why__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.why__card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition), transform var(--transition);
}
.why__card:hover { box-shadow: var(--shadow); transform: translateY(-4px); }
.why__icon { font-size: 32px; margin-bottom: 16px; }
.why__card h3 { font-size: 16px; font-weight: 700; margin-bottom: 10px; color: var(--text); }
.why__card p  { font-size: 14px; color: var(--text-2); line-height: 1.7; }

/* ============================================================
   PROJECTS
   ============================================================ */
.projects { background: var(--bg); }
.projects__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition), transform var(--transition);
  display: flex; flex-direction: column;
  text-decoration: none;
  cursor: pointer;
}
.project-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); }
.project-card:hover .project-card__visit { opacity: 1; }

/* Thumbnail with real image */
.project-card__thumb {
  height: 160px;
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--border);
  background: var(--bg-2);
  display: flex; align-items: center; justify-content: center;
}
.project-card__thumb img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
  display: block;
}
.project-card:hover .project-card__thumb img { transform: scale(1.04); }
.project-card__thumb--icon img {
  width: auto; height: 100%;
  object-fit: contain;
  padding: 20px;
}
.project-card__thumb--text {
  display: flex; align-items: center; justify-content: center;
}
.project-card__thumb-text {
  font-size: 40px; font-weight: 900;
  color: #fff;
  letter-spacing: -0.03em;
}
.project-card__visit {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.45);
  display: flex; align-items: center; justify-content: center;
  color: #fff;
  font-size: 14px;
  font-weight: 700;
  opacity: 0;
  transition: opacity 0.2s ease;
}

.project-card__body { padding: 16px 20px; flex: 1; display: flex; flex-direction: column; gap: 6px; }
.project-card__url {
  font-size: 12px; font-weight: 700;
  color: var(--accent);
  font-family: 'SF Mono', 'Fira Code', monospace;
  letter-spacing: 0.01em;
}
.project-card__name { font-size: 14px; font-weight: 700; color: var(--text); line-height: 1.4; }
.project-card__desc { font-size: 13px; color: var(--text-2); line-height: 1.6; flex: 1; }
.project-card__footer {
  padding: 10px 20px;
  border-top: 1px solid var(--border);
  background: var(--bg-2);
  display: flex; align-items: center; justify-content: space-between;
}
.project-built-label { font-size: 11px; color: var(--text-3); }
.project-built-value { font-size: 11px; color: var(--accent); font-weight: 600; }

/* ============================================================
   TESTIMONIALS
   ============================================================ */
.testimonials { background: var(--bg-2); }
.testimonials__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.testimonial-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition);
}
.testimonial-card:hover { box-shadow: var(--shadow); }
.testimonial-card__stars { color: var(--gold); font-size: 14px; margin-bottom: 14px; letter-spacing: 2px; }
.testimonial-card p { font-size: 14px; color: var(--text-2); line-height: 1.7; margin-bottom: 20px; font-style: italic; }
.testimonial-card__author { display: flex; align-items: center; gap: 12px; }
.testimonial-card__avatar {
  width: 40px; height: 40px; border-radius: 50%;
  background: var(--accent-dim);
  border: 1px solid rgba(229,56,59,0.15);
  display: flex; align-items: center; justify-content: center;
  font-size: 13px; font-weight: 700; color: var(--accent); flex-shrink: 0;
}
.testimonial-card__author strong { display: block; font-size: 14px; font-weight: 700; color: var(--text); }
.testimonial-card__author span   { font-size: 12px; color: var(--text-3); }

/* ============================================================
   FAQ
   ============================================================ */
.faq { background: var(--bg); }
.faq__list { max-width: 720px; margin: 0 auto; display: flex; flex-direction: column; gap: 8px; }
.faq__item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition);
}
.faq__item:hover { box-shadow: var(--shadow); }
.faq__question {
  width: 100%;
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; padding: 20px 24px;
  background: none; border: none;
  font-family: var(--font); font-size: 15px; font-weight: 600;
  color: var(--text); cursor: pointer; text-align: left;
}
.faq__icon { flex-shrink: 0; transition: transform var(--transition); color: var(--text-3); }
.faq__question.open .faq__icon { transform: rotate(180deg); color: var(--accent); }
.faq__answer { display: none; padding: 0 24px 20px; }
.faq__answer.open { display: block; }
.faq__answer p { font-size: 14px; color: var(--text-2); line-height: 1.7; }

/* ============================================================
   PRICING REVEAL  (dark panel — contrast cao để CTA nổi bật)
   ============================================================ */
.pricing-reveal { padding: 80px 0; background: var(--bg-2); }
.pricing-reveal__inner {
  position: relative;
  background: var(--dark-bg);
  border-radius: var(--radius-lg);
  padding: 64px 48px;
  text-align: center;
  overflow: hidden;
  color: #fff;
}
.pricing-reveal__glow {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 700px; height: 400px;
  background: radial-gradient(ellipse, rgba(229,56,59,0.12) 0%, transparent 65%);
  pointer-events: none;
}
.pricing-reveal__eyebrow {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: rgba(255,255,255,0.4);
  margin-bottom: 8px;
  position: relative; z-index: 1;
}
.pricing-reveal__heading {
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 900;
  letter-spacing: -0.03em;
  margin-bottom: 12px;
  color: #fff;
  position: relative; z-index: 1;
}
.pricing-reveal__sub {
  font-size: 16px;
  color: rgba(255,255,255,0.55);
  margin-bottom: 48px;
  position: relative; z-index: 1;
}

/* Price waterfall */
.pricing-waterfall {
  display: flex; flex-direction: column;
  align-items: center; gap: 0;
  margin-bottom: 40px;
  position: relative; z-index: 1;
}
.pw__row {
  display: flex; align-items: center; gap: 16px;
  padding: 14px 32px;
  border-radius: var(--radius);
  width: 100%; max-width: 480px;
  justify-content: space-between;
}
.pw__row--original {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
}
.pw__row--mid {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-top: none; border-radius: 0;
}
.pw__label     { font-size: 13px; color: rgba(255,255,255,0.4); text-align: left; flex: 1; }
.pw__price     { font-size: 18px; font-weight: 800; color: rgba(255,255,255,0.3); text-decoration: line-through; }
.pw__price--mid { font-size: 18px; font-weight: 800; color: rgba(255,255,255,0.4); text-decoration: line-through; }
.pw__saving    { font-size: 11px; padding: 2px 8px; border-radius: 4px; background: rgba(34,197,94,0.15); color: #4ADE80; font-weight: 600; }

/* Green final price */
.pw__row--final {
  background: rgba(34,197,94,0.1);
  border: 2px solid #22C55E;
  border-radius: var(--radius);
  margin-top: 12px; padding: 20px 32px;
  max-width: 480px; width: 100%;
  justify-content: space-between;
  box-shadow: 0 0 40px rgba(34,197,94,0.15);
}
.pw__label--final {
  font-size: 14px; color: #fff;
  font-weight: 700; text-align: left; flex: 1;
}
.pw__label--final small { display: block; font-size: 11px; color: #4ADE80; font-weight: 400; margin-top: 2px; }
.pw__price--final {
  font-size: 32px; font-weight: 900;
  color: #22C55E;
  letter-spacing: -0.02em;
}

/* Countdown */
.pricing-countdown {
  display: flex; align-items: center; justify-content: center;
  gap: 8px; margin-bottom: 36px;
  font-size: 13px; color: rgba(255,255,255,0.4);
  position: relative; z-index: 1;
}
.countdown-timer { display: flex; align-items: center; gap: 6px; }
.countdown-block {
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 6px;
  padding: 4px 10px;
  font-size: 16px; font-weight: 800;
  color: var(--accent);
  font-family: 'SF Mono', monospace;
  min-width: 40px; text-align: center;
}
.countdown-sep { color: var(--accent); font-weight: 800; }
.countdown-label { font-size: 10px; color: rgba(255,255,255,0.3); text-align: center; margin-top: 2px; }

.pricing-reveal__actions {
  display: flex; align-items: center; justify-content: center;
  gap: 12px; flex-wrap: wrap;
  position: relative; z-index: 1;
}
.pricing-reveal .btn--ghost {
  color: rgba(255,255,255,0.5);
  border-color: rgba(255,255,255,0.15);
}
.pricing-reveal .btn--ghost:hover { color: #fff; border-color: rgba(255,255,255,0.35); }

.pricing-guarantee {
  margin-top: 20px;
  font-size: 13px; color: rgba(255,255,255,0.35);
  position: relative; z-index: 1;
}
.pricing-guarantee strong { color: rgba(255,255,255,0.6); }

/* ============================================================
   STICKY CONTACT (Zalo + Messenger luôn nổi góc phải)
   ============================================================ */
.sticky-cta {
  position: fixed;
  bottom: 24px; right: 24px;
  z-index: 200;
  display: flex;
  flex-direction: column;
  gap: 12px;
  opacity: 0; transform: translateX(16px);
  transition: opacity 0.3s ease, transform 0.3s ease;
  pointer-events: none;
}
.sticky-cta.visible { opacity: 1; transform: translateX(0); pointer-events: auto; }

.sticky-contact {
  display: block;
  width: 56px; height: 56px;
  border-radius: 50%;
  box-shadow: 0 4px 20px rgba(0,0,0,0.18);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  text-decoration: none;
  overflow: hidden;
  line-height: 0;
}
.sticky-contact:hover {
  transform: scale(1.12) translateY(-2px);
  box-shadow: 0 8px 28px rgba(0,0,0,0.25);
}
.sticky-contact img { display: block; width: 56px; height: 56px; }

/* ============================================================
   FOOTER  (stays dark like pi2.vn)
   ============================================================ */
.footer {
  padding: 64px 0 32px;
  background: var(--dark-bg);
  border-top: 1px solid var(--dark-border);
}
.footer__grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: 32px; margin-bottom: 48px; }
.footer__brand p { font-size: 14px; color: rgba(255,255,255,0.45); line-height: 1.7; margin: 16px 0 24px; max-width: 260px; }
.footer .header__logo-text { color: #fff; }
.footer__social { display: flex; gap: 12px; }
.footer__social a {
  width: 36px; height: 36px; border-radius: 8px;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--dark-border);
  display: flex; align-items: center; justify-content: center;
  color: rgba(255,255,255,0.4);
  transition: all var(--transition);
}
.footer__social a:hover { border-color: var(--accent); color: var(--accent); background: var(--accent-dim); }
.footer__col h4 {
  font-size: 13px; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.08em;
  color: rgba(255,255,255,0.3); margin-bottom: 20px;
}
.footer__col a { display: block; font-size: 14px; color: rgba(255,255,255,0.45); margin-bottom: 10px; transition: color var(--transition); }
.footer__col a:hover { color: #fff; }
.footer__bottom {
  display: flex; justify-content: space-between; align-items: center;
  padding-top: 24px; border-top: 1px solid var(--dark-border);
  font-size: 13px; color: rgba(255,255,255,0.25);
  flex-wrap: wrap; gap: 8px;
}
.footer__bottom a { color: var(--accent); }
.footer__bottom a:hover { text-decoration: underline; }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
  .hero__inner { grid-template-columns: 1fr; }
  .hero__visual { display: none; }
  .hero__badge, .hero__title, .hero__desc, .hero__actions, .hero__stats { grid-column: 1; }
  .roadmap__track   { grid-template-columns: repeat(2, 1fr); }
  .roadmap__line    { display: none; }
  .courses__grid    { grid-template-columns: repeat(2, 1fr); }
  .course-single    { grid-template-columns: 1fr; }
  .course-single__enroll { position: static; }
  .why__grid        { grid-template-columns: repeat(2, 1fr); }
  .projects__grid   { grid-template-columns: repeat(2, 1fr); }
  .testimonials__grid { grid-template-columns: repeat(2, 1fr); }
  .footer__grid     { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .header__nav     { display: none; }
  .header__actions { display: none; }
  .header__burger  { display: flex; }
  .header__nav.open {
    display: flex; flex-direction: column;
    position: fixed; top: calc(var(--announce-h, 0px) + 68px); left: 0; right: 0;
    background: rgba(255,255,255,0.97);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    padding: 20px 24px; gap: 16px; z-index: 99;
    box-shadow: var(--shadow);
  }
  .hero { padding: 136px 0 60px; }
  .has-announce .hero { padding-top: calc(var(--announce-h, 36px) + 100px); }
  .pain__grid   { grid-template-columns: 1fr; }
  .steps__flow  {
    grid-template-columns: 1fr; gap: 16px; max-width: 480px;
  }
  .step-arrow { transform: rotate(90deg); }
  .courses__grid    { grid-template-columns: 1fr; }
  .course-single    { grid-template-columns: 1fr; }
  .course-single__enroll { position: static; }
  .chatbot-showcase { grid-template-columns: 1fr; }
  .why__grid        { grid-template-columns: 1fr; }
  .projects__grid   { grid-template-columns: 1fr; }
  .testimonials__grid { grid-template-columns: 1fr; }
  .roadmap__track   { grid-template-columns: 1fr; }
  .footer__grid     { grid-template-columns: 1fr; }
  .footer__bottom   { flex-direction: column; text-align: center; }
  .pricing-reveal__inner { padding: 48px 24px; }
  .pw__row, .pw__row--final { padding: 14px 20px; }
  .pw__price--final { font-size: 26px; }
  .section { padding: 64px 0; }
  .sticky-cta { bottom: 16px; right: 16px; }
}

@media (max-width: 480px) {
  .hero__actions { flex-direction: column; }
  .hero__actions .btn { width: 100%; justify-content: center; }
  .hero__stats { gap: 16px; }
  .trusted__logos { gap: 24px; }
  .pricing-reveal__actions { flex-direction: column; }
  .pricing-reveal__actions .btn { width: 100%; justify-content: center; }
}


/* ============================================================
   MODAL OVERLAY
   ============================================================ */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  backdrop-filter: blur(6px);
  z-index: 500;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
}
.modal-overlay.open {
  opacity: 1;
  pointer-events: auto;
}

.modal {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 40px;
  width: 100%;
  max-width: 480px;
  position: relative;
  box-shadow: 0 24px 80px rgba(0,0,0,0.2);
  transform: translateY(20px) scale(0.97);
  transition: transform 0.25s ease;
}
.modal-overlay.open .modal {
  transform: translateY(0) scale(1);
}

.modal__close {
  position: absolute;
  top: 16px; right: 16px;
  width: 36px; height: 36px;
  border-radius: 8px;
  background: var(--bg-2);
  border: 1px solid var(--border);
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  color: var(--text-2);
  transition: all var(--transition);
}
.modal__close:hover { background: var(--border); color: var(--text); }

.modal__header { text-align: center; margin-bottom: 28px; }
.modal__icon   { font-size: 40px; margin-bottom: 12px; }
.modal__title  { font-size: 22px; font-weight: 800; margin-bottom: 8px; color: var(--text); }
.modal__sub    { font-size: 14px; color: var(--text-2); line-height: 1.6; }
.modal__sub strong { color: var(--accent); }

/* ============================================================
   FORM
   ============================================================ */
.modal__form { display: flex; flex-direction: column; gap: 16px; }

.form-group { display: flex; flex-direction: column; gap: 6px; }

.form-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
}
.form-required { color: var(--accent); }

.form-input {
  width: 100%;
  padding: 12px 16px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  font-family: var(--font);
  font-size: 14px;
  color: var(--text);
  background: var(--bg);
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
}
.form-input::placeholder { color: var(--text-3); }
.form-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(229,56,59,0.1);
}
.form-input.error {
  border-color: var(--accent);
  background: rgba(229,56,59,0.03);
}

.form-error {
  font-size: 12px;
  color: var(--accent);
  min-height: 16px;
  display: block;
}

.modal__submit {
  width: 100%;
  justify-content: center;
  margin-top: 4px;
  font-size: 15px;
  padding: 15px 28px;
}
.modal__submit:disabled {
  opacity: 0.7;
  cursor: not-allowed;
  transform: none;
}

.modal__privacy {
  text-align: center;
  font-size: 12px;
  color: var(--text-3);
  line-height: 1.6;
}
.modal__privacy strong { color: var(--text-2); }

/* ============================================================
   MODAL SUCCESS STATE
   ============================================================ */
.modal__success { text-align: center; padding: 20px 0; }
.modal__success-icon { font-size: 56px; margin-bottom: 16px; }
.modal__success h3 { font-size: 20px; font-weight: 800; margin-bottom: 12px; color: var(--text); }
.modal__success p  { font-size: 14px; color: var(--text-2); line-height: 1.7; }

@media (max-width: 480px) {
  .modal { padding: 28px 20px; }
  .modal__title { font-size: 20px; }
  .header__contact { gap: 6px; }
  .contact-icon { width: 36px; height: 36px; }
  .contact-icon img { width: 28px; height: 28px; }
}

/* ============================================================
   INNER PAGES (about, contact, privacy, terms)
   ============================================================ */
.page-hero {
  padding: 120px 0 60px;
  background: var(--dark-bg);
  text-align: center;
  position: relative;
  overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(229,56,59,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(229,56,59,0.05) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 30%, transparent 100%);
}
.page-hero__tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 14px;
  border-radius: 100px;
  border: 1px solid rgba(229,56,59,0.35);
  color: var(--accent);
  background: rgba(229,56,59,0.1);
  font-size: 12px; font-weight: 600;
  letter-spacing: 0.08em; text-transform: uppercase;
  margin-bottom: 16px;
  position: relative; z-index: 1;
}
.page-hero__title {
  font-size: clamp(32px, 5vw, 52px);
  font-weight: 900;
  letter-spacing: -0.03em;
  color: #fff;
  line-height: 1.1;
  position: relative; z-index: 1;
}
.page-hero__desc {
  font-size: 17px;
  color: rgba(255,255,255,0.5);
  margin-top: 14px;
  position: relative; z-index: 1;
}

.page-body { padding: 72px 0 96px; background: var(--bg); }

.page-content {
  max-width: 780px;
  margin: 0 auto;
}

.page-content h2 {
  font-size: 22px; font-weight: 800;
  color: var(--text);
  margin: 48px 0 14px;
  padding-top: 48px;
  border-top: 1px solid var(--border);
}
.page-content h2:first-child { margin-top: 0; padding-top: 0; border-top: none; }
.page-content h3 {
  font-size: 16px; font-weight: 700;
  color: var(--text); margin: 24px 0 8px;
}
.page-content p {
  font-size: 15px; color: var(--text-2);
  line-height: 1.8; margin-bottom: 14px;
}
.page-content ul, .page-content ol {
  margin: 0 0 14px 20px;
}
.page-content li {
  font-size: 15px; color: var(--text-2);
  line-height: 1.8; margin-bottom: 6px;
}
.page-content a { color: var(--accent); }
.page-content a:hover { text-decoration: underline; }
.page-content strong { color: var(--text); font-weight: 600; }

.page-content .highlight-box {
  background: var(--accent-dim);
  border: 1px solid rgba(229,56,59,0.2);
  border-radius: var(--radius);
  padding: 20px 24px;
  margin: 24px 0;
}
.page-content .highlight-box p { color: var(--text-2); margin: 0; }

/* Contact page */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}
.contact-info__item {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  margin-bottom: 24px;
}
.contact-info__icon {
  width: 44px; height: 44px;
  border-radius: var(--radius-sm);
  background: var(--accent-dim);
  border: 1px solid rgba(229,56,59,0.15);
  display: flex; align-items: center; justify-content: center;
  font-size: 20px; flex-shrink: 0;
}
.contact-info__label { font-size: 11px; color: var(--text-3); text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: 4px; }
.contact-info__value { font-size: 15px; font-weight: 600; color: var(--text); }
.contact-info__value a { color: var(--text); }
.contact-info__value a:hover { color: var(--accent); }

.contact-channels {
  display: flex; gap: 12px; margin-top: 8px; flex-wrap: wrap;
}
.contact-channel {
  display: flex; align-items: center; gap: 8px;
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  font-size: 13px; font-weight: 600;
  color: var(--text-2);
  transition: all var(--transition);
  text-decoration: none;
  background: var(--bg-card);
  box-shadow: var(--shadow-sm);
}
.contact-channel:hover { border-color: var(--accent); color: var(--accent); background: var(--accent-dim); text-decoration: none; }
.contact-channel img { width: 20px; height: 20px; }

.contact-form { display: flex; flex-direction: column; gap: 16px; }
.contact-form .form-group { display: flex; flex-direction: column; gap: 6px; }
.contact-form textarea.form-input {
  resize: vertical; min-height: 120px;
  font-family: var(--font); line-height: 1.6;
}

@media (max-width: 768px) {
  .contact-grid { grid-template-columns: 1fr; gap: 32px; }
  .page-hero { padding: 100px 0 48px; }
}

/* ---------- Scrollbar ---------- */
::-webkit-scrollbar       { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-2); }
::-webkit-scrollbar-thumb { background: rgba(0,0,0,0.15); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: rgba(0,0,0,0.25); }

/* ============================================================
   BLOG — LISTING PAGE
   ============================================================ */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.blog-grid--2 { grid-template-columns: repeat(2, 1fr); }

.blog-card {
  display: flex;
  flex-direction: column;
  background: var(--bg-card);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
  box-shadow: var(--shadow-sm);
}
.blog-card:hover {
  box-shadow: var(--shadow);
  transform: translateY(-3px);
  border-color: rgba(229,56,59,0.25);
  text-decoration: none;
}

.blog-card__thumb {
  height: 180px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.blog-card__emoji { font-size: 52px; }

.blog-card__body {
  display: flex;
  flex-direction: column;
  padding: 20px 22px 22px;
  flex: 1;
}

.blog-card__meta {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 12px;
}
.blog-tag {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 100px;
  font-size: 11px; font-weight: 700;
  letter-spacing: 0.05em; text-transform: uppercase;
  background: var(--accent-dim);
  color: var(--accent);
  border: 1px solid rgba(229,56,59,0.2);
}
.blog-date, .blog-read {
  font-size: 12px;
  color: var(--text-3);
}
.blog-date::before { content: '·'; margin-right: 6px; }

.blog-card__title {
  font-size: 16px; font-weight: 800;
  color: var(--text);
  line-height: 1.35;
  margin-bottom: 10px;
  letter-spacing: -0.01em;
}
.blog-card__desc {
  font-size: 13px;
  color: var(--text-2);
  line-height: 1.7;
  margin-bottom: 16px;
  flex: 1;
}

.blog-card__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: auto;
  padding-top: 14px;
  border-top: 1px solid var(--border);
}
.blog-author {
  display: flex; align-items: center; gap: 8px;
  font-size: 12px; color: var(--text-2);
}
.blog-author__avatar {
  width: 26px; height: 26px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff; font-size: 9px; font-weight: 800;
  display: flex; align-items: center; justify-content: center;
}
.blog-card__cta {
  font-size: 12px; font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.01em;
}

/* ============================================================
   BLOG — ARTICLE PAGES
   ============================================================ */
.post-hero {
  padding: 120px 0 56px;
  position: relative;
  overflow: hidden;
}
.post-hero::before {
  content: '';
  position: absolute; inset: 0;
  background: rgba(0,0,0,0.2);
}
.post-hero__inner {
  position: relative; z-index: 1;
  max-width: 800px;
}
.post-hero__meta {
  display: flex; align-items: center; gap: 12px;
  margin-bottom: 20px;
}
.post-hero__back {
  font-size: 13px; font-weight: 600;
  color: rgba(255,255,255,0.7);
  text-decoration: none;
  transition: color var(--transition);
}
.post-hero__back:hover { color: #fff; }
.post-hero__title {
  font-size: clamp(26px, 4vw, 44px);
  font-weight: 900;
  letter-spacing: -0.03em;
  color: #fff;
  line-height: 1.15;
  margin-bottom: 24px;
}
.post-hero__info { display: flex; align-items: center; gap: 16px; }
.post-author {
  display: flex; align-items: center; gap: 10px;
}
.post-author__avatar {
  width: 36px; height: 36px;
  border-radius: 50%;
  background: rgba(255,255,255,0.2);
  color: #fff; font-size: 10px; font-weight: 800;
  display: flex; align-items: center; justify-content: center;
  border: 2px solid rgba(255,255,255,0.3);
}
.post-author__name { font-size: 14px; font-weight: 700; color: #fff; }
.post-author__date { font-size: 12px; color: rgba(255,255,255,0.6); }

/* Layout: sidebar TOC + article */
.post-layout { padding: 64px 0 96px; background: var(--bg); }

.post-wrapper {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 48px;
  align-items: start;
  max-width: 1040px;
  margin: 0 auto;
}

/* Table of Contents sidebar */
.post-toc {
  position: sticky;
  top: 100px;
}
.post-toc__inner {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
}
.post-toc__title {
  font-size: 11px; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.1em;
  color: var(--text-3);
  margin-bottom: 14px;
}
.post-toc ul { list-style: none; padding: 0; margin: 0; }
.post-toc li { margin-bottom: 2px; }
.post-toc a {
  display: block;
  font-size: 13px; color: var(--text-2);
  padding: 6px 10px;
  border-radius: 6px;
  text-decoration: none;
  line-height: 1.4;
  transition: all var(--transition);
}
.post-toc a:hover { color: var(--accent); background: var(--accent-dim); }

/* Article content */
.post-content { min-width: 0; }

.post-lead {
  font-size: 18px !important;
  font-weight: 500 !important;
  color: var(--text) !important;
  line-height: 1.7 !important;
  border-left: 3px solid var(--accent);
  padding-left: 20px;
  margin-bottom: 32px !important;
}

.post-content h2 {
  font-size: 22px; font-weight: 800;
  color: var(--text);
  margin: 48px 0 14px;
  padding-top: 48px;
  border-top: 1px solid var(--border);
  letter-spacing: -0.02em;
  scroll-margin-top: 100px;
}
.post-content h2:first-of-type { margin-top: 0; padding-top: 0; border-top: none; }
.post-content h3 {
  font-size: 17px; font-weight: 700;
  color: var(--text); margin: 28px 0 10px;
  scroll-margin-top: 100px;
}
.post-content p {
  font-size: 15px; color: var(--text-2);
  line-height: 1.85; margin-bottom: 16px;
}
.post-content ul, .post-content ol {
  margin: 0 0 16px 24px;
}
.post-content li {
  font-size: 15px; color: var(--text-2);
  line-height: 1.8; margin-bottom: 8px;
}
.post-content strong { color: var(--text); font-weight: 700; }
.post-content a { color: var(--accent); }
.post-content a:hover { text-decoration: underline; }

.post-content blockquote {
  margin: 28px 0;
  padding: 20px 24px;
  background: var(--bg-2);
  border-left: 4px solid var(--accent);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: 16px; font-style: italic;
  color: var(--text-2); line-height: 1.7;
}

.post-highlight {
  background: var(--accent-dim);
  border: 1px solid rgba(229,56,59,0.18);
  border-radius: var(--radius);
  padding: 20px 24px;
  margin: 28px 0;
  font-size: 14px;
  color: var(--text-2);
  line-height: 1.75;
}
.post-highlight--green {
  background: rgba(22,163,74,0.07);
  border-color: rgba(22,163,74,0.2);
}
.post-highlight strong { color: var(--text); font-weight: 700; display: block; margin-bottom: 8px; }
.post-highlight ul { margin: 8px 0 0 20px; }
.post-highlight li { font-size: 14px; margin-bottom: 4px; color: var(--text-2); }

.post-cta {
  margin: 48px 0 32px;
  padding: 32px;
  background: var(--dark-bg);
  border-radius: var(--radius);
  color: #fff;
  text-align: center;
}
.post-cta h3 { font-size: 20px; font-weight: 800; color: #fff; margin-bottom: 10px; }
.post-cta p { font-size: 14px; color: rgba(255,255,255,0.65); line-height: 1.7; margin-bottom: 20px; }

.post-tags {
  display: flex; flex-wrap: wrap; gap: 8px;
  margin-top: 32px; padding-top: 24px;
  border-top: 1px solid var(--border);
}
.post-tags span {
  padding: 5px 12px;
  border-radius: 100px;
  background: var(--bg-2);
  border: 1px solid var(--border);
  font-size: 12px; color: var(--text-2); font-weight: 500;
}

/* Related posts */
.related-posts {
  padding: 64px 0;
  background: var(--bg-2);
  border-top: 1px solid var(--border);
}
.related-posts__title {
  font-size: 22px; font-weight: 800;
  color: var(--text); margin-bottom: 28px;
}

/* Gradient text */
.gradient-text {
  background: linear-gradient(135deg, #E5383B, #FF6B35);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ============================================================
   INNER-PAGE HEADER — always opaque (dark hero at top)
   Prevents transparent header blending with dark page/post-hero
   on blog listing + article pages. Applied via body.page-inner.
   ============================================================ */
body.page-inner .header {
  background: rgba(255,255,255,0.97);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}

/* ============================================================
   BLOG RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
  .blog-grid { grid-template-columns: repeat(2, 1fr); }
  .post-wrapper { grid-template-columns: 1fr; }
  .post-toc { display: none; }
}
@media (max-width: 640px) {
  .blog-grid, .blog-grid--2 { grid-template-columns: 1fr; }
  .post-hero { padding: 100px 0 40px; }
  .post-hero__title { font-size: 26px; }
  .post-layout { padding: 40px 0 64px; }
  .post-cta { padding: 24px 20px; }
  .post-cta h3 { font-size: 17px; }
}