/* Academic Marathon - Design System & Styles */
/* Based on Visual Style Guide v1.0 */

/* ========================================
   CSS CUSTOM PROPERTIES (Design Tokens)
   ======================================== */
:root {
  /* Primary Brand Colors - From Logo */
  --color-primary: #E8A838;
  --color-primary-dark: #D4951A;
  --color-primary-light: #F0B84D;
  --color-navy: #1B3B6F;
  --color-navy-dark: #142c54;
  --color-navy-light: #2a4d85;
  --color-white: #FFFFFF;

  /* Award Colors */
  --color-gold: #E8A838;
  --color-silver: #C0C0C0;
  --color-bronze: #CD7F32;

  /* Subject Accent Colors - STEM */
  --color-mathethon: #E91E63;
  --color-physithon: #2196F3;
  --color-chemithon: #4CAF50;
  --color-biothon: #009688;
  --color-inforthon: #9C27B0;
  --color-envirothon: #2E7D32;

  /* Subject Accent Colors - Social Sciences */
  --color-econthon: #FF9800;
  --color-psychothon: #673AB7;
  --color-geothon: #8D6E63;
  --color-historithon: #880E4F;

  /* Subject Accent Colors - Humanities & Arts */
  --color-philosothon: #4A148C;
  --color-lingothon: #FF5252;
  --color-artithon: #E91E78;
  --color-literathon: #1565C0;

  /* Text Colors */
  --color-text-primary: #212121;
  --color-text-secondary: #757575;
  --color-text-tertiary: #BDBDBD;

  /* Background Colors */
  --color-bg-primary: #FFFFFF;
  --color-bg-secondary: #F5F5F5;
  --color-bg-accent: #FAFAFA;

  /* Border Colors */
  --color-border-primary: #E0E0E0;
  --color-border-secondary: #F5F5F5;

  /* Alert Colors */
  --color-success: #4CAF50;
  --color-success-bg: #E8F5E9;
  --color-info: #2196F3;
  --color-info-bg: #E3F2FD;
  --color-warning: #FF9800;
  --color-warning-bg: #FFF3E0;
  --color-error: #F44336;
  --color-error-bg: #FFEBEE;

  /* Typography */
  --font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;

  /* Font Sizes */
  --font-size-display: 3.5rem;    /* 56px */
  --font-size-h1: 2.5rem;         /* 40px */
  --font-size-h2: 2rem;           /* 32px */
  --font-size-h3: 1.5rem;         /* 24px */
  --font-size-h4: 1.125rem;       /* 18px */
  --font-size-body: 1rem;         /* 16px */
  --font-size-small: 0.875rem;    /* 14px */
  --font-size-caption: 0.75rem;   /* 12px */

  /* Font Weights */
  --font-weight-regular: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;

  /* Line Heights */
  --line-height-tight: 1.1;
  --line-height-snug: 1.2;
  --line-height-normal: 1.4;
  --line-height-relaxed: 1.6;

  /* Spacing */
  --space-xxs: 0.25rem;   /* 4px */
  --space-xs: 0.5rem;     /* 8px */
  --space-s: 1rem;        /* 16px */
  --space-m: 1.5rem;      /* 24px */
  --space-l: 2rem;        /* 32px */
  --space-xl: 3rem;       /* 48px */
  --space-xxl: 4rem;      /* 64px */
  --space-xxxl: 6rem;     /* 96px */

  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 2px 8px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 4px 16px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 8px 32px rgba(0, 0, 0, 0.2);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-medium: 300ms ease;
  --transition-slow: 500ms ease;

  /* Layout */
  --max-width: 1200px;
  --nav-height: 90px;
}

/* ========================================
   CSS RESET & BASE
   ======================================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-regular);
  line-height: var(--line-height-relaxed);
  color: var(--color-text-primary);
  background-color: var(--color-bg-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img, picture, video, canvas, svg {
  display: block;
  max-width: 100%;
}

input, button, textarea, select {
  font: inherit;
}

a {
  color: var(--color-navy);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-primary);
}

ul, ol {
  list-style: none;
}

/* ========================================
   TYPOGRAPHY
   ======================================== */
h1, h2, h3, h4, h5, h6 {
  color: var(--color-navy);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-snug);
}

.display {
  font-size: var(--font-size-display);
  line-height: var(--line-height-tight);
  letter-spacing: -0.02em;
}

h1, .h1 {
  font-size: var(--font-size-h1);
}

h2, .h2 {
  font-size: var(--font-size-h2);
  font-weight: var(--font-weight-semibold);
  line-height: var(--line-height-snug);
}

h3, .h3 {
  font-size: var(--font-size-h3);
  font-weight: var(--font-weight-semibold);
  line-height: var(--line-height-normal);
}

h4, .h4 {
  font-size: var(--font-size-h4);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
}

p {
  margin-bottom: var(--space-s);
}

p:last-child {
  margin-bottom: 0;
}

.text-secondary {
  color: var(--color-text-secondary);
}

.text-small {
  font-size: var(--font-size-small);
}

.text-center {
  text-align: center;
}

/* ========================================
   LAYOUT
   ======================================== */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-m);
}

.section {
  padding: var(--space-xxl) 0;
}

.section--alt {
  background-color: var(--color-bg-secondary);
}

.grid {
  display: grid;
  gap: var(--space-m);
}

.grid--2 {
  grid-template-columns: repeat(2, 1fr);
}

.grid--3 {
  grid-template-columns: repeat(3, 1fr);
}

.grid--4 {
  grid-template-columns: repeat(4, 1fr);
}

.flex {
  display: flex;
}

.flex--center {
  justify-content: center;
  align-items: center;
}

.flex--between {
  justify-content: space-between;
  align-items: center;
}

.flex--gap-s {
  gap: var(--space-s);
}

.flex--gap-m {
  gap: var(--space-m);
}

/* ========================================
   NAVIGATION
   ======================================== */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  background-color: var(--color-white);
  box-shadow: var(--shadow-sm);
  z-index: 1000;
}

.nav__container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-m);
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: var(--font-size-h4);
  font-weight: var(--font-weight-bold);
  color: var(--color-navy);
}

.nav__logo span {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.nav__logo img {
  height: 70px;
  width: auto;
}

.nav__menu {
  display: flex;
  align-items: center;
  gap: var(--space-l);
}

.nav__link {
  font-size: 0.9375rem;
  font-weight: var(--font-weight-medium);
  color: var(--color-navy);
  padding: var(--space-xs) 0;
  position: relative;
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-primary);
  transition: width var(--transition-fast);
}

.nav__link:hover::after,
.nav__link--active::after {
  width: 100%;
}

.nav__dropdown {
  position: relative;
}

.nav__dropdown-menu {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  background-color: var(--color-white);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-lg);
  padding: var(--space-s);
  min-width: 200px;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-fast), visibility var(--transition-fast);
}

.nav__dropdown:hover .nav__dropdown-menu {
  opacity: 1;
  visibility: visible;
}

.nav__dropdown-item {
  display: block;
  padding: var(--space-xs) var(--space-s);
  font-size: var(--font-size-small);
  color: var(--color-text-primary);
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-fast);
}

.nav__dropdown-item:hover {
  background-color: var(--color-bg-secondary);
  color: var(--color-navy);
}

.nav__cta {
  margin-left: var(--space-s);
}

/* Mobile Navigation */
.nav__toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-xs);
}

.nav__toggle-icon {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-navy);
  position: relative;
}

.nav__toggle-icon::before,
.nav__toggle-icon::after {
  content: '';
  position: absolute;
  width: 100%;
  height: 100%;
  background-color: var(--color-navy);
  left: 0;
  transition: transform var(--transition-fast);
}

.nav__toggle-icon::before {
  top: -8px;
}

.nav__toggle-icon::after {
  bottom: -8px;
}

/* ========================================
   BUTTONS
   ======================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  padding: 0.75rem 1.5rem;
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-semibold);
  text-align: center;
  border-radius: var(--radius-sm);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn:active {
  transform: translateY(0);
}

.btn--primary {
  background-color: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}

.btn--primary:hover {
  background-color: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  color: var(--color-white);
}

.btn--secondary {
  background-color: var(--color-white);
  color: var(--color-navy);
  border-color: var(--color-navy);
}

.btn--secondary:hover {
  background-color: var(--color-navy);
  color: var(--color-white);
}

.btn--text {
  background-color: transparent;
  color: var(--color-navy);
  padding: var(--space-xs) var(--space-s);
  border: none;
}

.btn--text:hover {
  text-decoration: underline;
  transform: none;
  color: var(--color-primary);
}

.btn--small {
  padding: 0.5rem 1rem;
  font-size: var(--font-size-small);
}

.btn--large {
  padding: 1rem 2rem;
  font-size: var(--font-size-h4);
}

/* ========================================
   CARDS
   ======================================== */
.card {
  background-color: var(--color-white);
  border: 1px solid var(--color-border-primary);
  border-top: 3px solid var(--color-border-primary);
  border-radius: var(--radius-md);
  padding: var(--space-m);
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-top-color: var(--color-primary);
}

.card__icon {
  width: 64px;
  height: 64px;
  margin-bottom: var(--space-s);
}

.card__title {
  font-size: var(--font-size-h4);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-xs);
  color: var(--color-navy);
}

.card__text {
  color: var(--color-text-secondary);
  font-size: var(--font-size-small);
  margin-bottom: var(--space-s);
}

/* Subject Cards */
.subject-card {
  border-width: 2px;
  text-align: center;
  padding: var(--space-l);
}

.subject-card--mathethon { border-color: var(--color-mathethon); }
.subject-card--physithon { border-color: var(--color-physithon); }
.subject-card--chemithon { border-color: var(--color-chemithon); }
.subject-card--biothon { border-color: var(--color-biothon); }
.subject-card--inforthon { border-color: var(--color-inforthon); }
.subject-card--envirothon { border-color: var(--color-envirothon); }
.subject-card--econthon { border-color: var(--color-econthon); }
.subject-card--psychothon { border-color: var(--color-psychothon); }
.subject-card--geothon { border-color: var(--color-geothon); }
.subject-card--historithon { border-color: var(--color-historithon); }
.subject-card--philosothon { border-color: var(--color-philosothon); }
.subject-card--lingothon { border-color: var(--color-lingothon); }
.subject-card--artithon { border-color: var(--color-artithon); }
.subject-card--literathon { border-color: var(--color-literathon); }

/* News Card */
.news-card {
  display: flex;
  flex-direction: column;
}

.news-card__date {
  font-size: var(--font-size-small);
  color: var(--color-text-tertiary);
  margin-bottom: var(--space-xs);
}

.news-card__title {
  font-size: var(--font-size-h4);
  margin-bottom: var(--space-xs);
}

.news-card__excerpt {
  color: var(--color-text-secondary);
  font-size: var(--font-size-small);
  flex-grow: 1;
  margin-bottom: var(--space-s);
}

/* ========================================
   HERO SECTION
   ======================================== */
.hero {
  padding-top: calc(var(--nav-height) + var(--space-xxl));
  padding-bottom: var(--space-xxl);
  background: linear-gradient(135deg, var(--color-bg-secondary) 0%, var(--color-white) 100%);
}

.hero--centered {
  text-align: center;
}

.hero__content {
  max-width: 800px;
}

.hero--centered .hero__content {
  margin: 0 auto;
}

.hero__title {
  font-size: var(--font-size-display);
  margin-bottom: var(--space-m);
  line-height: var(--line-height-tight);
}

.hero__subtitle {
  font-size: var(--font-size-h3);
  color: var(--color-text-secondary);
  font-weight: var(--font-weight-regular);
  margin-bottom: var(--space-l);
}

.hero__actions {
  display: flex;
  gap: var(--space-s);
  flex-wrap: wrap;
}

.hero--centered .hero__actions {
  justify-content: center;
}

/* ========================================
   STATS SECTION
   ======================================== */
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-m);
  align-items: end;
}

.stat {
  text-align: center;
  padding: var(--space-m);
  display: flex;
  flex-direction: column;
}

.stat__value-wrapper {
  display: flex;
  flex-direction: column;
  align-items: center;
  min-height: 3.5rem;
  justify-content: flex-end;
}

.stat__number {
  font-size: var(--font-size-display);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  line-height: 1;
}

.stat__prefix {
  font-size: var(--font-size-small);
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-xxs);
}

.stat__label {
  font-size: var(--font-size-body);
  color: var(--color-text-secondary);
  margin-top: var(--space-xs);
}

/* ========================================
   SECTION HEADERS
   ======================================== */
.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto var(--space-xl);
}

.section-header__title {
  margin-bottom: var(--space-s);
  position: relative;
  display: inline-block;
}

.section-header__title::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background-color: var(--color-primary);
  border-radius: 2px;
}

.section-header__subtitle {
  color: var(--color-text-secondary);
  font-size: var(--font-size-h4);
}

/* ========================================
   PILLARS / FEATURE CARDS
   ======================================== */
.pillars {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-l);
}

.pillar {
  text-align: center;
  padding: var(--space-l);
}

.pillar__icon {
  width: 80px;
  height: 80px;
  margin: 0 auto var(--space-m);
  background-color: rgba(232, 168, 56, 0.15);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
}

.pillar__icon svg {
  width: 40px;
  height: 40px;
  color: var(--color-primary);
}

.pillar__title {
  font-size: var(--font-size-h4);
  margin-bottom: var(--space-s);
}

.pillar__text {
  color: var(--color-text-secondary);
}

/* ========================================
   TIMELINE / STEPS
   ======================================== */
.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-m);
  position: relative;
}

.steps::before {
  content: '';
  position: absolute;
  top: 40px;
  left: 10%;
  right: 10%;
  height: 2px;
  background-color: var(--color-border-primary);
}

.step {
  text-align: center;
  position: relative;
  z-index: 1;
}

.step__number {
  width: 80px;
  height: 80px;
  margin: 0 auto var(--space-m);
  background-color: var(--color-primary);
  color: var(--color-white);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-h2);
  font-weight: var(--font-weight-bold);
}

.step__title {
  font-size: var(--font-size-h4);
  margin-bottom: var(--space-xs);
}

.step__text {
  color: var(--color-text-secondary);
  font-size: var(--font-size-small);
}

/* ========================================
   CALENDAR SECTION
   ======================================== */
.calendar-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-m);
}

.calendar-season {
  background-color: var(--color-bg-accent);
  border-radius: var(--radius-md);
  padding: var(--space-m);
}

.calendar-season__title {
  font-size: var(--font-size-h4);
  color: var(--color-navy);
  margin-bottom: var(--space-s);
  padding-bottom: var(--space-xs);
  border-bottom: 2px solid var(--color-primary);
}

.calendar-season__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.calendar-event {
  font-size: var(--font-size-small);
  color: var(--color-text-primary);
}

.calendar-event__month {
  font-weight: var(--font-weight-semibold);
  color: var(--color-navy);
}

/* ========================================
   CTA SECTION
   ======================================== */
.cta-section {
  background-color: var(--color-navy);
  color: var(--color-white);
  text-align: center;
  padding: var(--space-xxl) 0;
}

.cta-section__title {
  color: var(--color-white);
  margin-bottom: var(--space-m);
}

.cta-section__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-l);
  max-width: 800px;
  margin: 0 auto;
}

.cta-box {
  background-color: rgba(255, 255, 255, 0.1);
  padding: var(--space-l);
  border-radius: var(--radius-md);
}

.cta-box__title {
  color: var(--color-white);
  font-size: var(--font-size-h4);
  margin-bottom: var(--space-xs);
}

.cta-box__text {
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: var(--space-m);
}

.cta-box .btn--secondary {
  background-color: var(--color-white);
  border-color: var(--color-white);
  color: var(--color-navy);
}

.cta-box .btn--secondary:hover {
  background-color: transparent;
  color: var(--color-white);
}

/* ========================================
   FOOTER
   ======================================== */
.footer {
  background-color: var(--color-white);
  color: var(--color-text-primary);
  padding: var(--space-xxl) 0 var(--space-l);
  border-top: 1px solid var(--color-border-primary);
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr repeat(4, 1fr);
  gap: var(--space-xl);
  margin-bottom: var(--space-xl);
}

.footer__brand {
  max-width: 280px;
}

.footer__logo {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: var(--font-size-h4);
  font-weight: var(--font-weight-bold);
  color: var(--color-navy);
  margin-bottom: var(--space-s);
}

.footer__logo span {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.footer__logo img {
  height: 70px;
  width: auto;
}

.footer__tagline {
  color: var(--color-text-secondary);
  font-size: var(--font-size-small);
  margin-bottom: var(--space-m);
}

.footer__social {
  display: flex;
  gap: var(--space-s);
}

.footer__social-link {
  width: 40px;
  height: 40px;
  background-color: var(--color-bg-secondary);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-navy);
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.footer__social-link:hover {
  background-color: var(--color-primary);
  color: var(--color-white);
}

.footer__column-title {
  color: var(--color-navy);
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-m);
}

.footer__links {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.footer__link {
  color: var(--color-text-secondary);
  font-size: var(--font-size-small);
  transition: color var(--transition-fast);
}

.footer__link:hover {
  color: var(--color-primary);
}

.footer__bottom {
  padding-top: var(--space-l);
  border-top: 1px solid var(--color-border-primary);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer__copyright {
  color: var(--color-text-tertiary);
  font-size: var(--font-size-small);
}

.footer__legal {
  display: flex;
  gap: var(--space-m);
}

.footer__legal-link {
  color: var(--color-text-tertiary);
  font-size: var(--font-size-small);
}

.footer__legal-link:hover {
  color: var(--color-primary);
}

/* ========================================
   FORMS
   ======================================== */
.form-group {
  margin-bottom: var(--space-m);
}

.form-label {
  display: block;
  font-size: var(--font-size-small);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
  margin-bottom: var(--space-xs);
}

.form-label--required::after {
  content: ' *';
  color: var(--color-error);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  height: 48px;
  padding: 0.75rem 1rem;
  font-size: var(--font-size-body);
  border: 1px solid var(--color-border-primary);
  border-radius: var(--radius-sm);
  background-color: var(--color-white);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-navy);
  box-shadow: 0 0 0 3px rgba(27, 59, 111, 0.1);
}

.form-input::placeholder {
  color: var(--color-text-tertiary);
}

.form-textarea {
  height: auto;
  min-height: 120px;
  resize: vertical;
}

.form-error {
  color: var(--color-error);
  font-size: var(--font-size-small);
  margin-top: var(--space-xxs);
}

/* ========================================
   ACCORDION
   ======================================== */
.accordion {
  border: 1px solid var(--color-border-primary);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.accordion__item {
  border-bottom: 1px solid var(--color-border-primary);
}

.accordion__item:last-child {
  border-bottom: none;
}

.accordion__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  padding: var(--space-s) var(--space-m);
  background-color: var(--color-white);
  border: none;
  cursor: pointer;
  text-align: left;
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  transition: background-color var(--transition-fast);
}

.accordion__header:hover {
  background-color: var(--color-bg-secondary);
}

.accordion__icon {
  width: 24px;
  height: 24px;
  transition: transform var(--transition-fast);
}

.accordion__item--active .accordion__header {
  background-color: var(--color-bg-secondary);
  border-left: 3px solid var(--color-primary);
}

.accordion__item--active .accordion__icon {
  transform: rotate(180deg);
}

.accordion__content {
  display: none;
  padding: var(--space-s) var(--space-m) var(--space-m);
  color: var(--color-text-secondary);
}

.accordion__item--active .accordion__content {
  display: block;
}

/* ========================================
   TABLES
   ======================================== */
.table-wrapper {
  overflow-x: auto;
}

.table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--font-size-small);
}

.table th,
.table td {
  padding: 0.75rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--color-border-primary);
}

.table th {
  background-color: var(--color-bg-secondary);
  font-weight: var(--font-weight-semibold);
  color: var(--color-navy);
  border-top: 3px solid var(--color-primary);
}

.table tbody tr:hover {
  background-color: var(--color-bg-accent);
}

.table tbody tr:nth-child(even) {
  background-color: var(--color-bg-accent);
}

/* ========================================
   ALERTS
   ======================================== */
.alert {
  padding: var(--space-s);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: flex-start;
  gap: var(--space-s);
}

.alert--success {
  background-color: var(--color-success-bg);
  border: 1px solid var(--color-success);
  color: #2E7D32;
}

.alert--info {
  background-color: var(--color-info-bg);
  border: 1px solid var(--color-info);
  color: #1565C0;
}

.alert--warning {
  background-color: var(--color-warning-bg);
  border: 1px solid var(--color-warning);
  color: #E65100;
}

.alert--error {
  background-color: var(--color-error-bg);
  border: 1px solid var(--color-error);
  color: #C62828;
}

/* ========================================
   BADGES
   ======================================== */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.75rem;
  font-size: var(--font-size-caption);
  font-weight: var(--font-weight-semibold);
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.badge--gold {
  background-color: var(--color-gold);
  color: #1a1a1a;
}

.badge--silver {
  background-color: var(--color-silver);
  color: #1a1a1a;
}

.badge--bronze {
  background-color: var(--color-bronze);
  color: var(--color-white);
}

.badge--open {
  background-color: var(--color-success);
  color: var(--color-white);
}

.badge--closed {
  background-color: var(--color-text-tertiary);
  color: var(--color-white);
}

.badge--coming {
  background-color: var(--color-info);
  color: var(--color-white);
}

/* ========================================
   AWARDS TIERS
   ======================================== */
.awards-tiers {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--space-s);
  margin-top: var(--space-m);
}

.award-tier {
  text-align: center;
  padding: var(--space-m) var(--space-s);
  border-radius: var(--radius-md);
  background-color: var(--color-bg-secondary);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.award-tier:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.award-tier__badge {
  margin-bottom: var(--space-s);
}

.award-tier__star {
  width: 48px;
  height: 48px;
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.2));
}

.award-tier h4 {
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-semibold);
  color: var(--color-navy);
  margin-bottom: var(--space-xxs);
}

.award-tier__points {
  font-size: var(--font-size-small);
  color: var(--color-text-secondary);
  margin: 0;
}

.award-tier--diamond {
  background: linear-gradient(135deg, rgba(103, 232, 249, 0.1) 0%, rgba(6, 182, 212, 0.1) 100%);
  border: 1px solid rgba(6, 182, 212, 0.3);
}

.award-tier--platinum {
  background: linear-gradient(135deg, rgba(229, 231, 235, 0.3) 0%, rgba(209, 213, 219, 0.3) 100%);
  border: 1px solid rgba(156, 163, 175, 0.3);
}

.award-tier--gold {
  background: linear-gradient(135deg, rgba(251, 191, 36, 0.1) 0%, rgba(245, 158, 11, 0.1) 100%);
  border: 1px solid rgba(245, 158, 11, 0.3);
}

.award-tier--silver {
  background: linear-gradient(135deg, rgba(156, 163, 175, 0.1) 0%, rgba(107, 114, 128, 0.1) 100%);
  border: 1px solid rgba(107, 114, 128, 0.3);
}

.award-tier--bronze {
  background: linear-gradient(135deg, rgba(251, 146, 60, 0.1) 0%, rgba(234, 88, 12, 0.1) 100%);
  border: 1px solid rgba(234, 88, 12, 0.3);
}

@media (max-width: 1023px) {
  .awards-tiers {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 767px) {
  .awards-tiers {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ========================================
   MARATHON EVENT CARDS (Extended)
   ======================================== */
.marathon-card {
  display: flex;
  flex-direction: column;
  height: 100%;
}

.marathon-card__header {
  padding: var(--space-m);
  border-bottom: 1px solid var(--color-border-primary);
}

.marathon-card__category {
  font-size: var(--font-size-caption);
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-xs);
}

.marathon-card__name {
  font-size: var(--font-size-h3);
  color: var(--color-navy);
  margin-bottom: var(--space-xxs);
}

.marathon-card__subtitle {
  font-size: var(--font-size-small);
  color: var(--color-text-secondary);
}

.marathon-card__body {
  padding: var(--space-m);
  flex-grow: 1;
}

.marathon-card__focus {
  font-weight: var(--font-weight-semibold);
  color: var(--color-navy);
  margin-bottom: var(--space-xs);
}

.marathon-card__stations {
  font-size: var(--font-size-small);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-m);
}

.marathon-card__dates {
  display: flex;
  flex-direction: column;
  gap: var(--space-xxs);
  font-size: var(--font-size-small);
}

.marathon-card__date {
  display: flex;
  justify-content: space-between;
}

.marathon-card__date-label {
  color: var(--color-text-secondary);
}

.marathon-card__date-value {
  font-weight: var(--font-weight-medium);
}

.marathon-card__footer {
  padding: var(--space-m);
  border-top: 1px solid var(--color-border-primary);
  display: flex;
  gap: var(--space-s);
}

.marathon-card__header {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
}

.marathon-card__header-content {
  flex: 1;
}

.marathon-card__logo {
  width: 120px;
  height: 120px;
  object-fit: contain;
  margin-left: auto;
}

/* Subject Card Logo */
.subject-card__logo {
  width: 96px;
  height: 96px;
  object-fit: contain;
  margin: 0 auto var(--space-s);
}

/* Station Tags */
.marathon-card__stations-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin-bottom: var(--space-m);
}

.marathon-card__station-tag {
  display: inline-block;
  padding: var(--space-xxs) var(--space-xs);
  font-size: var(--font-size-caption);
  border-radius: var(--radius-sm);
  border: 1px solid currentColor;
  background-color: transparent;
}

/* Station tag colors per marathon */
.marathon-card__station-tag--mathethon { color: var(--color-mathethon); }
.marathon-card__station-tag--physithon { color: var(--color-physithon); }
.marathon-card__station-tag--chemithon { color: var(--color-chemithon); }
.marathon-card__station-tag--biothon { color: var(--color-biothon); }
.marathon-card__station-tag--inforthon { color: var(--color-inforthon); }
.marathon-card__station-tag--envirothon { color: var(--color-envirothon); }
.marathon-card__station-tag--econthon { color: var(--color-econthon); }
.marathon-card__station-tag--psychothon { color: var(--color-psychothon); }
.marathon-card__station-tag--geothon { color: var(--color-geothon); }
.marathon-card__station-tag--historithon { color: var(--color-historithon); }
.marathon-card__station-tag--philosothon { color: var(--color-philosothon); }
.marathon-card__station-tag--lingothon { color: var(--color-lingothon); }
.marathon-card__station-tag--artithon { color: var(--color-artithon); }
.marathon-card__station-tag--literathon { color: var(--color-literathon); }

/* ========================================
   PAGE CONTENT SECTIONS
   ======================================== */
.content-section {
  padding: var(--space-xl) 0;
}

.content-section + .content-section {
  padding-top: 0;
}

.content-block {
  max-width: 800px;
}

.content-block h2 {
  margin-bottom: var(--space-m);
}

.content-block h3 {
  margin-top: var(--space-l);
  margin-bottom: var(--space-s);
}

.content-block p {
  margin-bottom: var(--space-s);
}

.content-block ul,
.content-block ol {
  margin-bottom: var(--space-s);
  padding-left: var(--space-m);
}

.content-block li {
  margin-bottom: var(--space-xs);
  list-style: disc;
}

.content-block ol li {
  list-style: decimal;
}

/* ========================================
   CAROUSEL
   ======================================== */
.carousel {
  position: relative;
  overflow: hidden;
}

.carousel__track {
  display: flex;
  transition: transform var(--transition-medium);
}

.carousel__slide {
  flex: 0 0 100%;
  padding: 0 var(--space-s);
}

.carousel__nav {
  display: flex;
  justify-content: center;
  gap: var(--space-xs);
  margin-top: var(--space-m);
}

.carousel__dot {
  width: 12px;
  height: 12px;
  border-radius: var(--radius-full);
  background-color: var(--color-border-primary);
  border: none;
  cursor: pointer;
  transition: background-color var(--transition-fast);
}

.carousel__dot--active {
  background-color: var(--color-navy);
}

.carousel__btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 48px;
  height: 48px;
  background-color: var(--color-white);
  border: 1px solid var(--color-border-primary);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
  z-index: 10;
}

.carousel__btn:hover {
  background-color: var(--color-navy);
  color: var(--color-white);
  border-color: var(--color-navy);
}

.carousel__btn--prev {
  left: var(--space-s);
}

.carousel__btn--next {
  right: var(--space-s);
}

/* ========================================
   RESPONSIVE STYLES
   ======================================== */
@media (max-width: 1199px) {
  :root {
    --font-size-display: 2.75rem;
    --font-size-h1: 2rem;
    --font-size-h2: 1.75rem;
  }

  .footer__grid {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-l);
  }

  .footer__brand {
    grid-column: 1 / -1;
    max-width: 100%;
    margin-bottom: var(--space-m);
  }
}

@media (max-width: 1023px) {
  .grid--4 {
    grid-template-columns: repeat(2, 1fr);
  }

  .steps {
    grid-template-columns: repeat(2, 1fr);
  }

  .steps::before {
    display: none;
  }

  .stats {
    grid-template-columns: repeat(2, 1fr);
  }

  .pillars {
    grid-template-columns: 1fr;
  }

  .calendar-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 767px) {
  :root {
    --font-size-display: 2rem;
    --font-size-h1: 1.75rem;
    --font-size-h2: 1.5rem;
    --font-size-h3: 1.25rem;
    --space-xxl: 3rem;
    --space-xl: 2rem;
  }

  .nav__menu {
    display: none;
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--color-white);
    flex-direction: column;
    padding: var(--space-m);
    gap: var(--space-s);
    overflow-y: auto;
  }

  .nav__menu--active {
    display: flex;
  }

  .nav__toggle {
    display: flex;
  }

  .nav__cta {
    margin-left: 0;
    width: 100%;
  }

  .nav__cta .btn {
    width: 100%;
  }

  .nav__dropdown-menu {
    position: static;
    transform: none;
    box-shadow: none;
    opacity: 1;
    visibility: visible;
    padding: 0 0 0 var(--space-m);
    display: none;
  }

  .nav__dropdown--active .nav__dropdown-menu {
    display: block;
  }

  .hero__actions {
    flex-direction: column;
  }

  .hero__actions .btn {
    width: 100%;
  }

  .grid--2,
  .grid--3,
  .grid--4 {
    grid-template-columns: 1fr;
  }

  .stats {
    grid-template-columns: repeat(2, 1fr);
  }

  .steps {
    grid-template-columns: 1fr;
  }

  .calendar-grid {
    grid-template-columns: 1fr;
  }

  .cta-section__grid {
    grid-template-columns: 1fr;
  }

  .footer__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-m);
  }

  .footer__brand {
    grid-column: 1 / -1;
  }

  .footer__bottom {
    flex-direction: column;
    gap: var(--space-s);
    text-align: center;
  }

  .table {
    font-size: var(--font-size-caption);
  }

  .table th,
  .table td {
    padding: 0.5rem;
  }
}

/* ========================================
   UTILITY CLASSES
   ======================================== */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.hidden {
  display: none !important;
}

.mb-0 { margin-bottom: 0 !important; }
.mb-s { margin-bottom: var(--space-s) !important; }
.mb-m { margin-bottom: var(--space-m) !important; }
.mb-l { margin-bottom: var(--space-l) !important; }
.mb-xl { margin-bottom: var(--space-xl) !important; }

.mt-0 { margin-top: 0 !important; }
.mt-s { margin-top: var(--space-s) !important; }
.mt-m { margin-top: var(--space-m) !important; }
.mt-l { margin-top: var(--space-l) !important; }
.mt-xl { margin-top: var(--space-xl) !important; }

/* ========================================
   NEWS COMPONENTS
   ======================================== */
.news-loading,
.news-error,
.news-empty {
  text-align: center;
  padding: var(--space-xl);
  color: var(--color-text-secondary);
}

.news-spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--color-border-primary);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  margin: 0 auto var(--space-m);
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* News Modal */
.news-modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-medium), visibility var(--transition-medium);
  padding: var(--space-m);
}

.news-modal.active {
  opacity: 1;
  visibility: visible;
}

.news-modal-content {
  background-color: var(--color-white);
  border-radius: var(--radius-lg);
  max-width: 700px;
  width: 100%;
  max-height: 80vh;
  overflow-y: auto;
  box-shadow: var(--shadow-xl);
  transform: translateY(20px);
  transition: transform var(--transition-medium);
}

.news-modal.active .news-modal-content {
  transform: translateY(0);
}

.news-modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-m);
  border-bottom: 1px solid var(--color-border-primary);
  position: sticky;
  top: 0;
  background-color: var(--color-white);
}

.news-modal-date {
  font-size: var(--font-size-small);
  color: var(--color-text-secondary);
}

.news-modal-close {
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--color-text-secondary);
  cursor: pointer;
  padding: var(--space-xs);
  line-height: 1;
  transition: color var(--transition-fast);
}

.news-modal-close:hover {
  color: var(--color-text-primary);
}

.news-modal-body {
  padding: var(--space-m);
}

.news-modal-text {
  color: var(--color-text-primary);
  line-height: var(--line-height-relaxed);
}

.news-modal-text h1,
.news-modal-text h2,
.news-modal-text h3 {
  margin-top: var(--space-m);
  margin-bottom: var(--space-s);
}

.news-modal-text h1:first-child,
.news-modal-text h2:first-child,
.news-modal-text h3:first-child {
  margin-top: 0;
}

.news-modal-text p {
  margin-bottom: var(--space-s);
}

.news-modal-text a {
  color: var(--color-navy);
  text-decoration: underline;
}

.news-modal-images {
  margin-top: var(--space-m);
  display: grid;
  gap: var(--space-s);
}

.news-modal-images img {
  width: 100%;
  border-radius: var(--radius-md);
}

.news-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin-top: var(--space-m);
}

.news-tag {
  background-color: var(--color-bg-secondary);
  color: var(--color-text-secondary);
  padding: var(--space-xxs) var(--space-xs);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-caption);
}

/* News Card clickable */
.news-card {
  cursor: pointer;
}

.news-card:hover {
  border-top-color: var(--color-primary);
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  html {
    scroll-behavior: auto;
  }
}