/* ═══════════════════════════════════════════════
   digital.edu — Home Page Styles
═══════════════════════════════════════════════ */

/* ─── SEARCH DROPDOWN ─── */
.search-dropdown {
  position: absolute; top: calc(100% + 6px); left: 0; right: 0;
  background: var(--surface-2); border: 1px solid var(--border-mid);
  border-radius: var(--r-md); box-shadow: var(--shadow-lg);
  display: none; z-index: 500; overflow: hidden;
}
.search-dropdown.open { display: block; }
.search-result {
  display: flex; align-items: center; gap: 12px;
  padding: 11px 16px; cursor: pointer;
  transition: background var(--t);
  font-size: 14px;
}
.search-result:hover { background: var(--surface); }
.search-result-icon { font-size: 16px; flex-shrink: 0; }
.search-result-label { font-weight: 500; color: var(--ink); }
.search-result-meta { font-size: 12px; color: var(--ink-light); }

/* ─── LANG DROPDOWN ─── */
.lang-dropdown {
  position: fixed; top: calc(var(--nav-h) + 6px); right: 40px;
  background: var(--surface-2); border: 1px solid var(--border-mid);
  border-radius: var(--r-md); box-shadow: var(--shadow-lg);
  display: none; z-index: 400; min-width: 180px; overflow: hidden;
}
.lang-dropdown.open { display: block; }
.lang-opt {
  padding: 11px 18px; font-size: 14px; cursor: pointer;
  color: var(--ink-mid); transition: background var(--t);
}
.lang-opt:hover { background: var(--surface); }
.lang-opt.active { color: var(--blue-deep); font-weight: 500; }

/* ─── HERO ─── */
#hero {
  position: relative;
  width: 100vw; min-height: 100vh;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  overflow: hidden;
  background: var(--bg);
  padding: calc(var(--nav-h) + 40px) 24px 80px;
}
#particles-canvas {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  z-index: 0; pointer-events: none;
}
.hero-content {
  position: relative; z-index: 10;
  display: flex; flex-direction: column;
  align-items: center; text-align: center;
  gap: 24px; max-width: 860px; width: 100%;
  animation: fadeUp 0.9s ease both;
}
@keyframes fadeUp {
  from { opacity:0; transform:translateY(32px); }
  to   { opacity:1; transform:translateY(0); }
}

.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 7px 18px; border-radius: var(--r-full);
  background: rgba(66,133,244,0.10);
  border: 1px solid rgba(66,133,244,0.20);
  font-size: 13px; font-weight: 500; color: var(--blue-deep);
}

.hero-title {
  font-family: var(--font-display); font-weight: 700;
  font-size: clamp(52px, 9vw, 108px);
  line-height: 1.0; letter-spacing: -0.045em;
  color: var(--ink);
}
.hero-title-grad {
  background: linear-gradient(135deg, var(--blue-deep) 0%, var(--purple) 60%, var(--coral) 100%);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-sub {
  font-size: clamp(16px, 2vw, 20px); color: var(--ink-mid);
  line-height: 1.65; max-width: 580px; font-weight: 400;
}

/* ─── AI PATH FINDER ─── */
.ai-path-finder {
  width: 100%; max-width: 640px;
  background: var(--surface-2);
  border: 1px solid var(--border-mid);
  border-radius: var(--r-lg);
  padding: 20px 24px;
  box-shadow: var(--shadow-md);
}
.ai-path-label {
  display: flex; align-items: center; gap: 8px;
  font-size: 12px; font-weight: 600;
  letter-spacing: 0.10em; text-transform: uppercase;
  color: var(--ink-light); margin-bottom: 14px;
}
.ai-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--blue-deep);
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse {
  0%,100% { box-shadow: 0 0 0 0 rgba(66,133,244,0.4); }
  50%      { box-shadow: 0 0 0 6px rgba(66,133,244,0); }
}
.ai-path-input-row {
  display: flex; gap: 10px; margin-bottom: 12px;
}
.ai-path-input {
  flex: 1; padding: 12px 16px;
  border: 1px solid var(--border-mid); border-radius: var(--r-sm);
  font-family: var(--font-body); font-size: 14px; color: var(--ink);
  background: var(--surface); outline: none;
  transition: border-color var(--t);
}
.ai-path-input::placeholder { color: var(--ink-light); font-style: italic; }
.ai-path-input:focus { border-color: var(--blue-deep); background: var(--surface-2); }
.ai-path-btn {
  display: flex; align-items: center; gap: 8px;
  padding: 12px 22px; border-radius: var(--r-sm);
  background: var(--ink); color: #fff;
  font-size: 14px; font-weight: 500;
  transition: opacity var(--t);
  white-space: nowrap;
}
.ai-path-btn:hover { opacity: 0.82; }
.ai-path-suggestions {
  display: flex; gap: 8px; flex-wrap: wrap;
}
.ai-path-suggestions span {
  padding: 5px 12px; border-radius: var(--r-full);
  background: var(--surface); border: 1px solid var(--border);
  font-size: 12px; color: var(--ink-mid); cursor: pointer;
  transition: all var(--t);
}
.ai-path-suggestions span:hover {
  border-color: var(--blue-deep); color: var(--blue-deep);
  background: rgba(66,133,244,0.06);
}

/* ─── AI RESPONSE ─── */
.ai-response {
  width: 100%; max-width: 640px;
  background: linear-gradient(135deg, rgba(66,133,244,0.06), rgba(197,138,249,0.06));
  border: 1px solid rgba(66,133,244,0.2);
  border-radius: var(--r-lg); padding: 20px 24px;
  text-align: left;
}
.ai-response-header {
  display: flex; align-items: center; gap: 10px;
  font-size: 12px; font-weight: 600; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--ink-light); margin-bottom: 12px;
}
.ai-response-body { font-size: 15px; color: var(--ink-mid); line-height: 1.7; }
.ai-response-body strong { color: var(--ink); }

/* ─── HERO CTA ROW ─── */
.hero-cta-row {
  display: flex; gap: 12px; flex-wrap: wrap; justify-content: center;
}

/* ─── HERO STATS ─── */
.hero-stats {
  display: flex; align-items: center; gap: 20px;
  flex-wrap: wrap; justify-content: center;
  padding-top: 8px;
}
.hero-stat { text-align: center; }
.hero-stat strong { display: block; font-family: var(--font-display); font-size: 26px; font-weight: 700; letter-spacing: -0.02em; color: var(--ink); }
.hero-stat span { font-size: 12px; color: var(--ink-light); }
.hero-stat-div { width: 1px; height: 32px; background: var(--border-mid); }

/* ─── SCROLL HINT ─── */
.scroll-hint {
  position: absolute; bottom: 32px; left: 50%;
  transform: translateX(-50%); z-index: 10;
  display: flex; flex-direction: column; align-items: center; gap: 8px; opacity: 0.4;
}
.scroll-hint span { font-size: 10px; letter-spacing: 0.3em; text-transform: uppercase; }
.scroll-arrow {
  width: 14px; height: 14px;
  border-right: 1.5px solid var(--ink); border-bottom: 1.5px solid var(--ink);
  transform: rotate(45deg);
  animation: bounce 1.9s ease-in-out infinite;
}
@keyframes bounce { 0%,100%{transform:rotate(45deg) translateY(0)} 50%{transform:rotate(45deg) translateY(5px)} }

/* ─── TICKER LABEL ─── */
.ticker-label-row {
  text-align: center; padding: 28px 0 8px;
  font-size: 12px; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--ink-light);
}

/* ─── PROGRAMS GRID ─── */
.programs-header {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 40px; margin-bottom: 48px; align-items: end;
}
.programs-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-template-rows: auto auto;
  gap: 16px;
}
.program-card {
  display: flex; flex-direction: column;
  padding: 28px; border-radius: var(--r-md);
  border: 1px solid var(--border);
  transition: all var(--t); position: relative;
  overflow: hidden; cursor: pointer;
}
.program-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.program-card--wide { grid-column: span 4; flex-direction: row; align-items: center; gap: 24px; }
.program-card--wide .program-card-arrow { margin-left: auto; }
.program-card--blue  { background: rgba(66,133,244,0.07); border-color: rgba(66,133,244,0.2); }
.program-card--purple{ background: rgba(197,138,249,0.07); border-color: rgba(197,138,249,0.2); }
.program-card--amber { background: rgba(242,153,0,0.07); border-color: rgba(242,153,0,0.2); }
.program-card--green { background: rgba(129,201,149,0.07); border-color: rgba(129,201,149,0.2); }
.program-card--coral { background: rgba(242,139,130,0.07); border-color: rgba(242,139,130,0.2); }
.program-card-icon { font-size: 28px; margin-bottom: 12px; }
.program-card-label { font-size: 10px; font-weight: 600; letter-spacing: 0.15em; text-transform: uppercase; color: var(--ink-light); margin-bottom: 6px; }
.program-card-title { font-family: var(--font-display); font-size: 20px; font-weight: 700; letter-spacing: -0.02em; color: var(--ink); margin-bottom: 8px; }
.program-card-sub { font-size: 14px; color: var(--ink-mid); line-height: 1.6; flex: 1; }
.program-card-meta { font-size: 12px; color: var(--ink-light); margin-top: 14px; }
.program-card-arrow { font-size: 18px; color: var(--ink-light); margin-top: 16px; }

/* ─── SECTION GRAY ─── */
.section-gray { background: var(--surface); }

/* ─── COURSES GRID ─── */
.courses-grid {
  display: grid; grid-template-columns: repeat(4,1fr); gap: 20px;
}
.course-card { background: var(--surface-2); border-radius: var(--r-md); overflow: hidden; border: 1px solid var(--border); transition: all var(--t); }
.course-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
.course-thumb {
  height: 140px; display: flex; align-items: center; justify-content: center;
  font-size: 40px; position: relative; overflow: hidden;
}
.course-thumb-label {
  position: absolute; bottom: 10px; left: 10px;
  font-size: 10px; font-weight: 600; letter-spacing: 0.1em;
  text-transform: uppercase; background: rgba(0,0,0,0.45);
  color: #fff; padding: 3px 8px; border-radius: 4px;
}
.course-body { padding: 16px 18px; }
.course-university { font-size: 11px; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-light); margin-bottom: 5px; }
.course-title { font-size: 15px; font-weight: 600; color: var(--ink); margin-bottom: 6px; line-height: 1.35; }
.course-instructor { font-size: 12px; color: var(--ink-light); margin-bottom: 10px; }
.course-meta { display: flex; align-items: center; justify-content: space-between; }
.course-rating { font-size: 12px; color: var(--amber); }
.course-price { font-size: 14px; font-weight: 700; color: var(--ink); }
.course-enrolled { font-size: 11px; color: var(--ink-light); margin-top: 4px; }

/* ─── FEATURES GRID ─── */
.features-intro { margin-bottom: 48px; }
.features-grid {
  display: grid; grid-template-columns: 1.5fr 1fr;
  grid-template-rows: auto auto; gap: 20px;
}
.feature-card {
  background: var(--surface-2); border: 1px solid var(--border);
  border-radius: var(--r-lg); padding: 32px;
  transition: box-shadow var(--t);
}
.feature-card:hover { box-shadow: var(--shadow-md); }
.feature-card--large { grid-row: span 2; }
.feature-card--dark { background: var(--ink); }
.feature-tag {
  display: inline-block; padding: 4px 12px; border-radius: var(--r-full);
  background: rgba(66,133,244,0.1); color: var(--blue-deep);
  font-size: 11px; font-weight: 600; letter-spacing: 0.08em;
  text-transform: uppercase; margin-bottom: 16px;
}
.feature-title {
  font-family: var(--font-display); font-size: 26px; font-weight: 700;
  letter-spacing: -0.025em; line-height: 1.2; color: var(--ink); margin-bottom: 12px;
}
.feature-body { font-size: 15px; color: var(--ink-mid); line-height: 1.7; }
.feature-preview-link { display: inline-block; margin-top: 16px; font-size: 14px; font-weight: 500; color: var(--blue-deep); }

/* AI Chat Demo */
.ai-chat-demo { margin-top: 24px; display: flex; flex-direction: column; gap: 12px; }
.chat-msg {
  padding: 12px 16px; border-radius: var(--r-sm);
  font-size: 14px; line-height: 1.55; max-width: 90%;
}
.chat-msg.ai { background: var(--surface); color: var(--ink); border-radius: 4px 16px 16px 16px; }
.chat-msg.user { background: var(--blue-deep); color: #fff; align-self: flex-end; border-radius: 16px 4px 16px 16px; }

/* Lang demo */
.feature-lang-demo { margin-top: 20px; display: flex; flex-direction: column; gap: 8px; }
.lang-demo-item {
  padding: 10px 14px; border-radius: var(--r-sm);
  font-size: 13px; color: var(--ink-mid);
  background: var(--surface); border: 1px solid var(--border);
  transition: all var(--t); cursor: pointer;
}
.lang-demo-item.active { background: rgba(66,133,244,0.08); border-color: rgba(66,133,244,0.25); color: var(--ink); }
.lang-demo-item:hover { border-color: var(--blue-deep); }

/* ─── DASHBOARD MOCKUP ─── */
.dashboard-mockup {
  display: flex; border-radius: var(--r-lg); overflow: hidden;
  border: 1px solid var(--border-mid); box-shadow: var(--shadow-lg);
}
.dash-sidebar {
  width: 200px; flex-shrink: 0; background: var(--ink);
  padding: 24px 0; display: flex; flex-direction: column;
}
.dash-sidebar-logo {
  font-family: var(--font-display); font-weight: 700; font-size: 16px;
  color: #fff; padding: 0 20px 20px; border-bottom: 1px solid rgba(255,255,255,0.08);
  margin-bottom: 12px;
}
.dash-nav-item {
  padding: 10px 20px; font-size: 13px; color: rgba(255,255,255,0.5);
  cursor: pointer; transition: all var(--t);
  border-left: 2px solid transparent;
}
.dash-nav-item.active { color: #fff; border-left-color: var(--blue); background: rgba(255,255,255,0.06); }
.dash-nav-item:hover { color: rgba(255,255,255,0.8); }
.dash-balance {
  margin: auto 20px 0; padding: 16px;
  background: rgba(255,255,255,0.06); border-radius: var(--r-sm);
}
.dash-balance-label { font-size: 10px; letter-spacing: 0.1em; text-transform: uppercase; color: rgba(255,255,255,0.35); margin-bottom: 6px; }
.dash-balance-val { font-family: var(--font-display); font-size: 22px; font-weight: 700; color: #fff; margin-bottom: 10px; }
.dash-balance-btn { width: 100%; padding: 8px; background: var(--blue-deep); color: #fff; border-radius: 6px; font-size: 12px; font-weight: 500; }

.dash-main { flex: 1; background: var(--surface); padding: 28px; overflow: hidden; }
.dash-greeting { font-family: var(--font-display); font-size: 22px; font-weight: 700; margin-bottom: 20px; }
.dash-stats { display: grid; grid-template-columns: repeat(4,1fr); gap: 12px; margin-bottom: 24px; }
.dash-stat-card { background: var(--surface-2); padding: 16px; border-radius: var(--r-sm); border: 1px solid var(--border); text-align: center; }
.dash-stat-n { display: block; font-family: var(--font-display); font-size: 24px; font-weight: 700; color: var(--ink); }
.dash-stat-l { font-size: 11px; color: var(--ink-light); margin-top: 2px; }
.dash-courses-preview { display: flex; flex-direction: column; gap: 12px; }
.dash-course-item { display: flex; align-items: center; gap: 16px; background: var(--surface-2); padding: 16px; border-radius: var(--r-sm); border: 1px solid var(--border); }
.dash-course-thumb { width: 48px; height: 48px; border-radius: var(--r-sm); display: flex; align-items: center; justify-content: center; font-weight: 700; color: #fff; font-size: 14px; flex-shrink: 0; }
.dash-course-info { flex: 1; min-width: 0; }
.dash-course-title { font-size: 14px; font-weight: 600; color: var(--ink); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.dash-course-school { font-size: 12px; color: var(--ink-light); margin-top: 2px; }

/* ─── TESTIMONIALS ─── */
.testimonials-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 24px; }
.testimonial-card {
  background: var(--surface-2); border: 1px solid var(--border);
  border-radius: var(--r-md); padding: 28px;
}
.testimonial-avatar {
  width: 48px; height: 48px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; color: #fff; font-size: 16px; margin-bottom: 16px;
}
.testimonial-quote {
  font-size: 15px; color: var(--ink-mid); line-height: 1.75;
  font-style: italic; margin-bottom: 16px;
}
.testimonial-name { font-size: 15px; font-weight: 600; color: var(--ink); }
.testimonial-meta { font-size: 12px; color: var(--ink-light); margin-top: 2px; }

/* ─── CTA SECTION ─── */
.cta-section { padding: 0 0 0; }
.cta-inner {
  position: relative; overflow: hidden;
  background: var(--ink); border-radius: var(--r-xl);
  margin: 0 40px 80px; padding: 80px 60px;
}
.cta-canvas { position: absolute; inset: 0; width: 100%; height: 100%; opacity: 0.3; pointer-events: none; }
.cta-content { position: relative; z-index: 2; max-width: 500px; }
.cta-title { font-family: var(--font-display); font-size: clamp(36px,4.5vw,56px); font-weight: 700; letter-spacing: -0.03em; line-height: 1.1; color: #fff; margin-bottom: 16px; }
.cta-sub { font-size: 17px; color: rgba(255,255,255,0.65); line-height: 1.65; margin-bottom: 32px; }
.cta-btns { display: flex; gap: 12px; flex-wrap: wrap; }

/* ─── RESPONSIVE ─── */
@media (max-width: 1024px) {
  .programs-grid { grid-template-columns: repeat(2,1fr); }
  .program-card--wide { grid-column: span 2; }
  .courses-grid { grid-template-columns: repeat(2,1fr); }
  .features-grid { grid-template-columns: 1fr; }
  .testimonials-grid { grid-template-columns: 1fr; }
  .dash-stats { grid-template-columns: repeat(2,1fr); }
}
@media (max-width: 768px) {
  .programs-header { grid-template-columns: 1fr; }
  .program-card--wide { flex-direction: column; }
  .dashboard-mockup { flex-direction: column; }
  .dash-sidebar { width: 100%; flex-direction: row; flex-wrap: wrap; padding: 12px; }
  .cta-inner { margin: 0 20px 60px; padding: 48px 28px; }
}