/* ========================================
   ENVIROMEET — DESIGN SYSTEM & GLOBAL STYLES
   ======================================== */

/* ---------- Google Fonts ---------- */
@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@600;700;800;900&family=Inter:wght@300;400;500;600;700&display=swap');

/* ---------- CSS Custom Properties ---------- */
:root {
  /* Brand Colors */
  --color-primary: #1B5E20;
  --color-primary-light: #2E7D32;
  --color-primary-dark: #0D3B13;
  --color-accent: #00E5FF;
  --color-accent-dim: rgba(0, 229, 255, 0.15);
  --color-accent-glow: rgba(0, 229, 255, 0.4);

  /* Neutrals */
  --color-bg: #F9F9F9;
  --color-surface: #FFFFFF;
  --color-surface-dark: #0F1A12;
  --color-surface-darker: #0A1210;
  --color-text: #1A1A2E;
  --color-text-secondary: #5A5A7A;
  --color-text-light: #E0E0E0;
  --color-border: rgba(0, 0, 0, 0.08);

  /* Feedback */
  --color-correct: #2E7D32;
  --color-correct-bg: rgba(46, 125, 50, 0.12);
  --color-incorrect: #FF6D00;
  --color-incorrect-bg: rgba(255, 109, 0, 0.12);

  /* Glassmorphism */
  --glass-bg: rgba(255, 255, 255, 0.72);
  --glass-border: rgba(255, 255, 255, 0.3);
  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
  --glass-blur: blur(18px);

  /* Spacing */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 40px;
  --space-2xl: 64px;
  --space-3xl: 96px;

  /* Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --radius-round: 50%;

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.12);
  --shadow-glow: 0 0 20px rgba(0, 229, 255, 0.3);

  /* Typography */
  --font-heading: 'Montserrat', sans-serif;
  --font-body: 'Inter', sans-serif;

  /* Transitions */
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-medium: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);

  /* Layout */
  --nav-height: 72px;
  --container-max: 1280px;
  --container-wide: 1440px;
}

/* ---------- Reset & Base ---------- */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  overflow-x: hidden;
}

img {
  max-width: 100%;
  display: block;
}

a {
  text-decoration: none;
  color: inherit;
}

button {
  font-family: var(--font-body);
  cursor: pointer;
  border: none;
  background: none;
}

ul, ol {
  list-style: none;
}

/* ---------- Typography ---------- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-text);
}

h1 { font-size: clamp(2.2rem, 5vw, 3.5rem); font-weight: 800; }
h2 { font-size: clamp(1.6rem, 3.5vw, 2.5rem); font-weight: 700; }
h3 { font-size: clamp(1.2rem, 2.5vw, 1.6rem); font-weight: 700; }
h4 { font-size: 1.15rem; font-weight: 600; }

p {
  font-size: 1rem;
  line-height: 1.7;
  color: var(--color-text-secondary);
}

/* ---------- Utility Classes ---------- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.container--wide {
  max-width: var(--container-wide);
}

.section {
  padding: var(--space-3xl) 0;
}

.section--dark {
  background: var(--color-surface-dark);
  color: var(--color-text-light);
}

.section--dark h2,
.section--dark h3,
.section--dark h4 {
  color: #fff;
}

.section--dark p {
  color: rgba(255, 255, 255, 0.7);
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-2xl);
}

.section-header p {
  max-width: 600px;
  margin: var(--space-md) auto 0;
}

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

.gradient-text {
  background: linear-gradient(135deg, var(--color-primary-light), var(--color-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 14px 32px;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.95rem;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
}

.btn--primary {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  color: #fff;
  box-shadow: 0 4px 15px rgba(27, 94, 32, 0.35);
}

.btn--primary:hover {
  background: linear-gradient(135deg, var(--color-accent), #00BCD4);
  box-shadow: var(--shadow-glow);
  transform: translateY(-2px);
  color: var(--color-surface-dark);
}

.btn--outline {
  border: 2px solid var(--color-primary);
  color: var(--color-primary);
  background: transparent;
}

.btn--outline:hover {
  background: var(--color-primary);
  color: #fff;
  transform: translateY(-2px);
}

.btn--glass {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  color: var(--color-text);
}

.btn--sm {
  padding: 8px 20px;
  font-size: 0.85rem;
}

/* ---------- Navigation ---------- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--nav-height);
  z-index: 1000;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid var(--glass-border);
  transition: all var(--transition-medium);
}

.navbar.scrolled {
  box-shadow: var(--glass-shadow);
  background: rgba(255, 255, 255, 0.92);
}

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

.navbar__logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.5rem;
  color: var(--color-primary);
}

.navbar__logo-icon {
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1.1rem;
}

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

.navbar__link {
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
  position: relative;
}

.navbar__link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-accent);
  transition: width var(--transition-fast);
  border-radius: 2px;
}

.navbar__link:hover,
.navbar__link.active {
  color: var(--color-primary);
}

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

.navbar__cta {
  margin-left: var(--space-md);
}

.navbar__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  cursor: pointer;
  z-index: 1001;
}

.navbar__hamburger span {
  width: 24px;
  height: 2.5px;
  background: var(--color-primary);
  border-radius: 2px;
  transition: all var(--transition-fast);
}

.navbar__hamburger.open span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.navbar__hamburger.open span:nth-child(2) {
  opacity: 0;
}

.navbar__hamburger.open span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ---------- Hero Section ---------- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  padding-top: var(--nav-height);
  overflow: hidden;
  background: linear-gradient(160deg, #F9F9F9 0%, #E8F5E9 40%, #E0F7FA 100%);
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 700px;
  height: 700px;
  background: radial-gradient(circle, rgba(0, 229, 255, 0.12) 0%, transparent 70%);
  border-radius: 50%;
  animation: pulse-glow 6s ease-in-out infinite;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(27, 94, 32, 0.1) 0%, transparent 70%);
  border-radius: 50%;
  animation: pulse-glow 8s ease-in-out infinite reverse;
}

@keyframes pulse-glow {
  0%, 100% { transform: scale(1); opacity: 0.6; }
  50% { transform: scale(1.15); opacity: 1; }
}

.hero__content {
  position: relative;
  z-index: 1;
  max-width: 720px;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 8px 18px;
  background: var(--color-accent-dim);
  border: 1px solid rgba(0, 229, 255, 0.25);
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: var(--space-lg);
  animation: fadeInUp 0.6s ease-out;
}

.hero__badge span {
  font-size: 1rem;
}

.hero__title {
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 900;
  line-height: 1.1;
  margin-bottom: var(--space-lg);
  animation: fadeInUp 0.6s ease-out 0.1s both;
}

.hero__subtitle {
  font-size: 1.15rem;
  line-height: 1.7;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-xl);
  max-width: 560px;
  animation: fadeInUp 0.6s ease-out 0.2s both;
}

.hero__actions {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
  animation: fadeInUp 0.6s ease-out 0.3s both;
}

.hero__stats {
  display: flex;
  gap: var(--space-2xl);
  margin-top: var(--space-2xl);
  animation: fadeInUp 0.6s ease-out 0.4s both;
}

.hero__stat-number {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 800;
  color: var(--color-primary);
}

.hero__stat-label {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  margin-top: 2px;
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ---------- Feature Cards (Homepage) ---------- */
.features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
  margin-top: var(--space-2xl);
}

.feature-card {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  padding: var(--space-xl);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
  transition: all var(--transition-medium);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-medium);
}

.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.feature-card:hover::before {
  transform: scaleX(1);
}

.feature-card__icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: var(--space-md);
}

.feature-card__icon--green {
  background: rgba(27, 94, 32, 0.1);
  color: var(--color-primary);
}

.feature-card__icon--cyan {
  background: var(--color-accent-dim);
  color: #00ACC1;
}

.feature-card__icon--orange {
  background: rgba(255, 109, 0, 0.1);
  color: var(--color-incorrect);
}

.feature-card h3 {
  margin-bottom: var(--space-sm);
}

.feature-card p {
  font-size: 0.93rem;
}

/* ---------- Content Cards (Feed) ---------- */
.feed-layout {
  padding-top: calc(var(--nav-height) + var(--space-xl));
}

.feed-header {
  text-align: center;
  margin-bottom: var(--space-2xl);
}

.feed-filters {
  display: flex;
  justify-content: center;
  gap: var(--space-sm);
  margin-top: var(--space-lg);
  flex-wrap: wrap;
}

.feed-filter-btn {
  padding: 8px 22px;
  border-radius: 50px;
  font-weight: 500;
  font-size: 0.88rem;
  color: var(--color-text-secondary);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  transition: all var(--transition-fast);
}

.feed-filter-btn:hover,
.feed-filter-btn.active {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

.masonry-grid {
  columns: 3;
  column-gap: var(--space-lg);
}

.post-card {
  break-inside: avoid;
  margin-bottom: var(--space-lg);
  background: var(--color-surface);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
  transition: all var(--transition-medium);
}

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

.post-card__image {
  width: 100%;
  aspect-ratio: auto;
  object-fit: cover;
  display: block;
}

.post-card__body {
  padding: var(--space-md) var(--space-lg) var(--space-lg);
}

.post-card__tags {
  display: flex;
  gap: var(--space-sm);
  margin-bottom: var(--space-sm);
  flex-wrap: wrap;
}

.tag {
  padding: 4px 12px;
  border-radius: 50px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.tag--savings {
  background: rgba(0, 229, 255, 0.12);
  color: #00838F;
}

.tag--green {
  background: rgba(27, 94, 32, 0.1);
  color: var(--color-primary);
}

.tag--tech {
  background: rgba(103, 58, 183, 0.1);
  color: #5E35B1;
}

.tag--community {
  background: rgba(255, 109, 0, 0.1);
  color: #E65100;
}

.post-card__title {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: var(--space-sm);
  line-height: 1.35;
}

.post-card__excerpt {
  font-size: 0.88rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-md);
  line-height: 1.6;
}

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

.post-card__author {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.post-card__avatar {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-round);
  background: linear-gradient(135deg, var(--color-primary-light), var(--color-accent));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 700;
  font-size: 0.75rem;
}

.post-card__author-name {
  font-size: 0.82rem;
  font-weight: 600;
}

.post-card__actions {
  display: flex;
  gap: var(--space-md);
}

.action-btn {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 0.82rem;
  color: var(--color-text-secondary);
  transition: all var(--transition-fast);
  padding: 4px;
  border-radius: var(--radius-sm);
}

.action-btn:hover {
  color: var(--color-accent);
  text-shadow: 0 0 12px var(--color-accent-glow);
}

.action-btn.active {
  color: var(--color-primary);
}

.action-btn.active .action-icon {
  filter: drop-shadow(0 0 6px var(--color-accent-glow));
}

.action-btn svg {
  width: 18px;
  height: 18px;
  transition: all var(--transition-fast);
}

.action-btn:hover svg {
  filter: drop-shadow(0 0 8px var(--color-accent-glow));
}

/* ---------- Quiz / Knowledge Lab ---------- */
.quiz-layout {
  padding-top: calc(var(--nav-height) + var(--space-xl));
  min-height: 100vh;
}

.quiz-header {
  text-align: center;
  margin-bottom: var(--space-xl);
}

.quiz-tabs {
  display: flex;
  justify-content: center;
  gap: var(--space-sm);
  margin-top: var(--space-lg);
}

.quiz-tab {
  padding: 10px 28px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.9rem;
  border: 2px solid var(--color-border);
  transition: all var(--transition-fast);
  color: var(--color-text-secondary);
}

.quiz-tab:hover,
.quiz-tab.active {
  border-color: var(--color-primary);
  background: var(--color-primary);
  color: #fff;
}

/* Progress Bar */
.progress-container {
  max-width: 700px;
  margin: 0 auto var(--space-xl);
}

.progress-info {
  display: flex;
  justify-content: space-between;
  margin-bottom: var(--space-sm);
  font-size: 0.88rem;
  font-weight: 500;
}

.progress-bar {
  height: 8px;
  background: var(--color-border);
  border-radius: 50px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  border-radius: 50px;
  transition: width var(--transition-medium);
  width: 0%;
}

/* Quiz Card */
.quiz-area {
  max-width: 700px;
  margin: 0 auto;
}

.quiz-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-xl) var(--space-2xl);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-border);
  animation: fadeInUp 0.4s ease-out;
}

.quiz-card__question-number {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: var(--space-md);
}

.quiz-card__question {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: var(--space-xl);
  line-height: 1.4;
}

.quiz-options {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.quiz-option {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--radius-md);
  border: 2px solid var(--color-border);
  font-weight: 500;
  font-size: 1rem;
  transition: all var(--transition-fast);
  cursor: pointer;
}

.quiz-option:hover {
  border-color: var(--color-primary);
  background: rgba(27, 94, 32, 0.04);
}

.quiz-option.correct {
  border-color: var(--color-correct);
  background: var(--color-correct-bg);
  color: var(--color-correct);
}

.quiz-option.incorrect {
  border-color: var(--color-incorrect);
  background: var(--color-incorrect-bg);
  color: var(--color-incorrect);
}

.quiz-option.disabled {
  pointer-events: none;
  opacity: 0.6;
}

.quiz-option__letter {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: var(--color-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.9rem;
  flex-shrink: 0;
}

.quiz-option.correct .quiz-option__letter {
  background: var(--color-correct);
  color: #fff;
}

.quiz-option.incorrect .quiz-option__letter {
  background: var(--color-incorrect);
  color: #fff;
}

.quiz-nav {
  display: flex;
  justify-content: space-between;
  margin-top: var(--space-xl);
}

/* Flip Cards */
.flipcard-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-lg);
}

.flipcard {
  height: 260px;
  perspective: 1000px;
  cursor: pointer;
}

.flipcard__inner {
  width: 100%;
  height: 100%;
  transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
  transform-style: preserve-3d;
  position: relative;
}

.flipcard.flipped .flipcard__inner {
  transform: rotateY(180deg);
}

.flipcard__front,
.flipcard__back {
  position: absolute;
  width: 100%;
  height: 100%;
  backface-visibility: hidden;
  border-radius: var(--radius-md);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-xl);
  text-align: center;
}

.flipcard__front {
  background: linear-gradient(145deg, var(--color-primary), var(--color-primary-light));
  color: #fff;
  box-shadow: var(--shadow-md);
}

.flipcard__front-icon {
  font-size: 2.5rem;
  margin-bottom: var(--space-md);
}

.flipcard__front h4 {
  color: #fff;
  font-size: 1.05rem;
}

.flipcard__front p {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.85rem;
  margin-top: var(--space-xs);
}

.flipcard__back {
  background: var(--color-surface);
  border: 2px solid var(--color-accent);
  transform: rotateY(180deg);
  box-shadow: var(--shadow-md);
}

.flipcard__back p {
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--color-text);
}

.flipcard__back small {
  margin-top: var(--space-md);
  font-size: 0.78rem;
  color: var(--color-text-secondary);
}

/* Quiz Result */
.quiz-result {
  text-align: center;
  padding: var(--space-2xl);
  animation: fadeInUp 0.5s ease-out;
}

.quiz-result__score {
  font-family: var(--font-heading);
  font-size: 4rem;
  font-weight: 900;
  margin: var(--space-lg) 0;
}

.quiz-result__score.great {
  color: var(--color-correct);
}

.quiz-result__score.good {
  color: var(--color-accent);
}

.quiz-result__score.needs-work {
  color: var(--color-incorrect);
}

/* ---------- Impact Gallery ---------- */
.impact-layout {
  padding-top: calc(var(--nav-height) + var(--space-xl));
}

.impact-hero {
  text-align: center;
  padding: var(--space-2xl) 0 var(--space-3xl);
  background: linear-gradient(160deg, #F9F9F9 0%, #E8F5E9 50%, #E0F7FA 100%);
  position: relative;
}

/* --- Core Team --- */
.team-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-xl);
  max-width: 900px;
  margin: 0 auto;
}

.team-member {
  text-align: center;
  transition: transform var(--transition-medium);
}

.team-member:hover {
  transform: translateY(-6px);
}

.team-member__avatar {
  width: 120px;
  height: 120px;
  border-radius: var(--radius-round);
  background: linear-gradient(145deg, #E8F5E9, #E0F7FA);
  margin: 0 auto var(--space-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
  color: var(--color-primary-light);
  border: 3px solid var(--color-border);
  transition: border-color var(--transition-fast);
  position: relative;
  overflow: hidden;
}

.team-member:hover .team-member__avatar {
  border-color: var(--color-accent);
}

.team-member__avatar svg {
  width: 48px;
  height: 48px;
  opacity: 0.4;
}

.team-member__name {
  font-weight: 700;
  font-size: 1rem;
  margin-bottom: 2px;
}

.team-member__role {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
}

/* --- Leaders Carousel --- */
.leaders-section {
  background: var(--color-surface-dark);
  padding: var(--space-3xl) 0;
  overflow: hidden;
}

.leaders-section .section-header h2,
.leaders-section .section-header p {
  color: #fff;
}

.leaders-section .section-header p {
  color: rgba(255, 255, 255, 0.6);
}

.carousel-wrapper {
  position: relative;
  padding: 0 60px;
}

.carousel-track {
  display: flex;
  gap: var(--space-lg);
  overflow-x: auto;
  scroll-behavior: smooth;
  -ms-overflow-style: none;
  scrollbar-width: none;
  padding: var(--space-md) 0;
}

.carousel-track::-webkit-scrollbar {
  display: none;
}

.leader-card {
  min-width: 300px;
  max-width: 300px;
  background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  padding: var(--space-xl);
  flex-shrink: 0;
  transition: all var(--transition-medium);
}

.leader-card:hover {
  background: rgba(255, 255, 255, 0.1);
  transform: translateY(-4px);
  border-color: var(--color-accent);
}

.leader-card__photo {
  width: 80px;
  height: 80px;
  border-radius: var(--radius-round);
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  margin-bottom: var(--space-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  color: #fff;
  font-family: var(--font-heading);
  font-weight: 800;
}

.leader-card__name {
  font-weight: 700;
  font-size: 1.1rem;
  color: #fff;
  margin-bottom: 2px;
}

.leader-card__title {
  font-size: 0.85rem;
  color: var(--color-accent);
  margin-bottom: var(--space-md);
  font-weight: 500;
}

.leader-card__bio {
  font-size: 0.88rem;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.65);
}

.carousel-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 44px;
  height: 44px;
  border-radius: var(--radius-round);
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  transition: all var(--transition-fast);
  cursor: pointer;
  z-index: 2;
}

.carousel-btn:hover {
  background: var(--color-accent);
  color: var(--color-surface-dark);
  border-color: var(--color-accent);
}

.carousel-btn--prev { left: 8px; }
.carousel-btn--next { right: 8px; }

/* --- SDG Room --- */
.sdg-section {
  background: linear-gradient(180deg, #F9F9F9 0%, #E8F5E9 100%);
  padding: var(--space-3xl) 0;
}

.sdg-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: var(--space-md);
  max-width: 1100px;
  margin: 0 auto;
}

.sdg-card {
  aspect-ratio: 1;
  border-radius: var(--radius-md);
  position: relative;
  cursor: pointer;
  overflow: hidden;
  transition: all var(--transition-medium);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-md);
  text-align: center;
  box-shadow: var(--shadow-sm);
}

.sdg-card:hover {
  transform: scale(1.08);
  z-index: 2;
  box-shadow: var(--shadow-lg);
}

.sdg-card__number {
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: 2rem;
  color: rgba(255, 255, 255, 0.9);
  line-height: 1;
  margin-bottom: 4px;
}

.sdg-card__title {
  font-size: 0.68rem;
  font-weight: 700;
  color: #fff;
  text-transform: uppercase;
  letter-spacing: 0.3px;
  line-height: 1.3;
}

.sdg-card__overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.88);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-md);
  opacity: 0;
  transition: opacity var(--transition-medium);
  text-align: center;
}

.sdg-card:hover .sdg-card__overlay {
  opacity: 1;
}

.sdg-card__overlay p {
  color: #fff;
  font-size: 0.72rem;
  line-height: 1.5;
}

.sdg-card__overlay h4 {
  color: var(--color-accent);
  font-size: 0.78rem;
  margin-bottom: 6px;
}

/* Last row centering for 17 items (5 items in last row) */
.sdg-grid .sdg-card:nth-child(n+13) {
  /* handled via JS or flex fallback */
}

/* ---------- Footer ---------- */
.footer {
  background: var(--color-surface-dark);
  color: var(--color-text-light);
  padding: var(--space-2xl) 0 var(--space-lg);
}

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

.footer__brand p {
  color: rgba(255, 255, 255, 0.5);
  font-size: 0.9rem;
  margin-top: var(--space-md);
  max-width: 280px;
}

.footer__col h4 {
  color: #fff;
  font-size: 0.95rem;
  margin-bottom: var(--space-md);
}

.footer__col a {
  display: block;
  color: rgba(255, 255, 255, 0.55);
  font-size: 0.88rem;
  padding: 4px 0;
  transition: color var(--transition-fast);
}

.footer__col a:hover {
  color: var(--color-accent);
}

.footer__bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--space-lg);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.82rem;
  color: rgba(255, 255, 255, 0.4);
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .features {
    grid-template-columns: repeat(2, 1fr);
  }

  .masonry-grid {
    columns: 2;
  }

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

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

  .footer__inner {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-lg);
  }
}

@media (max-width: 768px) {
  .navbar__links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 320px;
    height: 100vh;
    background: var(--color-surface);
    flex-direction: column;
    align-items: flex-start;
    padding: calc(var(--nav-height) + var(--space-xl)) var(--space-xl) var(--space-xl);
    gap: var(--space-lg);
    box-shadow: -4px 0 30px rgba(0, 0, 0, 0.1);
    transition: right var(--transition-medium);
    z-index: 999;
  }

  .navbar__links.open {
    right: 0;
  }

  .navbar__hamburger {
    display: flex;
  }

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

  .navbar__cta .btn {
    width: 100%;
  }

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

  .hero__stats {
    gap: var(--space-xl);
  }

  .masonry-grid {
    columns: 1;
  }

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

  .team-member__avatar {
    width: 90px;
    height: 90px;
  }

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

  .leader-card {
    min-width: 260px;
  }

  .carousel-wrapper {
    padding: 0 var(--space-lg);
  }

  .carousel-btn {
    width: 36px;
    height: 36px;
    font-size: 1rem;
  }

  .carousel-btn--prev { left: 0; }
  .carousel-btn--next { right: 0; }

  .quiz-card {
    padding: var(--space-lg);
  }

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

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

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

@media (max-width: 480px) {
  .sdg-grid {
    grid-template-columns: 1fr;
  }

  .hero__title {
    font-size: 2rem;
  }

  .hero__stats {
    flex-direction: column;
    gap: var(--space-md);
  }

  .hero__actions {
    flex-direction: column;
  }

  .hero__actions .btn {
    width: 100%;
  }

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