/* =========================================================
   TX SMASHERS INSTITUTE DESIGN SYSTEM
   Shared styles for courses, modules, quizzes, dashboard,
   labs, certificates, and future LMS pages.
========================================================= */

:root {
  --txs-navy: #071426;
  --txs-navy-2: #0b1f37;
  --txs-orange: #ff7a1a;
  --txs-orange-dark: #c75f0b;
  --txs-gold: #c89b2d;
  --txs-bg: #f5f7fb;
  --txs-soft: #fff7ed;
  --txs-text: #374151;
  --txs-muted: #64748b;
  --txs-white: #ffffff;
  --txs-radius: 22px;
  --txs-shadow: 0 18px 45px rgba(7,20,38,.08);
}

body {
  background: var(--txs-bg);
  overflow-x: hidden;
}

.institute-hero-clean {
  background:
    radial-gradient(circle at top right, rgba(255,122,26,.20), transparent 34%),
    linear-gradient(135deg, var(--txs-navy) 0%, var(--txs-navy-2) 48%, #020817 100%);
  color: var(--txs-white);
  padding: 82px 0;
}

.institute-hero-clean h1 {
  color: var(--txs-white);
  font-size: clamp(2.6rem, 5vw, 4.8rem);
  line-height: .95;
  margin-bottom: 18px;
}

.institute-hero-clean p {
  color: #d6deea;
  max-width: 780px;
  line-height: 1.75;
  font-size: 1.06rem;
}

.institute-section {
  padding: 72px 0;
}

.institute-section.white {
  background: var(--txs-white);
}

.institute-card {
  background: var(--txs-white);
  border-radius: var(--txs-radius);
  padding: 30px;
  box-shadow: var(--txs-shadow);
  border-left: 6px solid var(--txs-orange);
}

.institute-card h2,
.institute-card h3 {
  color: var(--txs-navy);
  margin-top: 0;
}

.institute-card p,
.institute-card li {
  color: var(--txs-text);
  line-height: 1.7;
}

.institute-grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.institute-grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.institute-grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.institute-pill {
  display: inline-flex;
  background: #fff2e6;
  color: var(--txs-orange-dark);
  padding: 8px 14px;
  border-radius: 999px;
  font-size: .74rem;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: .08em;
  margin-bottom: 16px;
}

.institute-callout {
  background: var(--txs-soft);
  border-left: 6px solid var(--txs-orange);
  border-radius: 18px;
  padding: 24px;
  margin: 26px 0;
}

.institute-dark-box {
  background: var(--txs-navy);
  color: var(--txs-white);
  border-radius: 22px;
  padding: 30px;
  border-left: 6px solid var(--txs-orange);
}

.institute-dark-box h2,
.institute-dark-box h3,
.institute-dark-box p,
.institute-dark-box li {
  color: var(--txs-white);
}

.institute-progress-bar {
  width: 100%;
  height: 12px;
  background: #e5e7eb;
  border-radius: 999px;
  overflow: hidden;
  margin: 16px 0;
}

.institute-progress-fill {
  height: 100%;
  background: var(--txs-orange);
}

.module-row {
  background: var(--txs-white);
  border-radius: 16px;
  padding: 20px 24px;
  box-shadow: 0 10px 28px rgba(7,20,38,.07);
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 18px;
  align-items: center;
  border-left: 5px solid var(--txs-orange);
  min-height: 76px;
}

.module-num {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--txs-navy);
  color: var(--txs-white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
}

.module-status {
  color: var(--txs-orange);
  background: #fff2e6;
  border-radius: 999px;
  padding: 7px 12px;
  font-weight: 900;
  font-size: .78rem;
  white-space: nowrap;
}

.lesson-layout {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 32px;
  align-items: start;
}

.lesson-sidebar {
  background: var(--txs-white);
  border-radius: 20px;
  padding: 24px;
  box-shadow: var(--txs-shadow);
  position: sticky;
  top: 20px;
}

.lesson-sidebar a {
  display: block;
  color: var(--txs-navy);
  text-decoration: none;
  font-weight: 800;
  padding: 10px 0;
  border-bottom: 1px solid #e5e7eb;
}

.lesson-sidebar a.active,
.lesson-sidebar .active-module {
  color: var(--txs-orange);
}

.lesson-content {
  background: var(--txs-white);
  border-radius: 24px;
  padding: 42px;
  box-shadow: var(--txs-shadow);
}

.lesson-content h2 {
  color: var(--txs-navy);
  font-size: 2rem;
  margin-top: 34px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--txs-gold);
}

.lesson-content h3 {
  color: var(--txs-navy);
  margin-top: 26px;
}

.lesson-content p,
.lesson-content li {
  color: var(--txs-text);
  line-height: 1.8;
  font-size: 1rem;
}

.lesson-nav {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  margin-top: 40px;
  flex-wrap: wrap;
}

@media(max-width: 1100px) {
  .nav-links {
    display: none !important;
  }

  .mobile-menu-btn {
    display: block !important;
  }
}

@media(max-width: 980px) {
  .institute-grid-2,
  .institute-grid-3,
  .institute-grid-4,
  .lesson-layout {
    grid-template-columns: 1fr;
  }

  .lesson-sidebar {
    position: static;
  }

  .lesson-content {
    padding: 28px;
  }

  .module-row {
    grid-template-columns: 1fr;
  }
}