/* ===========================
   TIPSSE – Official Website
   Design: Modern dark space theme
   =========================== */

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

:root {
  --bg:          #080c14;
  --bg-2:        #0d1120;
  --bg-3:        #111827;
  --surface:     #161d2e;
  --surface-2:   #1e2840;
  --border:      rgba(255,255,255,0.08);
  --accent:      #4f8ef7;
  --accent-2:    #7b5ef6;
  --accent-glow: rgba(79,142,247,0.25);
  --text:        #e8edf5;
  --text-muted:  #8892a4;
  --text-dim:    #4a5568;
  --success:     #34d399;
  --warning:     #fbbf24;
  --radius:      12px;
  --radius-lg:   20px;
  --shadow:      0 4px 24px rgba(0,0,0,0.4);
  --shadow-lg:   0 8px 48px rgba(0,0,0,0.6);
  --transition:  0.3s cubic-bezier(0.4,0,0.2,1);
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', 'Noto Sans TC', system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
}

/* ── Scrollbar ── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--surface-2); border-radius: 3px; }

/* ── SVG Icons ── */
.about-icon svg,
.group-icon svg,
.project-icon svg,
.contact-icon svg {
  width: 36px;
  height: 36px;
  color: var(--accent);
  display: block;
}
.about-icon, .group-icon, .project-icon, .contact-icon {
  margin-bottom: 14px;
}

/* ── Typography ── */
h1, h2, h3, h4 { line-height: 1.25; font-weight: 700; }
h2 { font-size: clamp(1.8rem, 4vw, 2.8rem); }
h3 { font-size: clamp(1.1rem, 2.5vw, 1.4rem); }
p  { color: var(--text-muted); line-height: 1.75; }

/* ── Container ── */
.container { max-width: 1160px; margin: 0 auto; padding: 0 24px; }

/* ── Sections ── */
section { padding: 100px 0; }
section:nth-child(odd) { background: var(--bg); }
section:nth-child(even) { background: var(--bg-2); }

.section-header {
  text-align: center;
  margin-bottom: 64px;
}
.section-header p { max-width: 600px; margin: 16px auto 0; font-size: 1.05rem; }
.section-header.light h2 { color: #fff; }
.section-header.light p { color: rgba(255,255,255,0.7); }

.section-tag {
  display: inline-block;
  padding: 4px 14px;
  border-radius: 99px;
  border: 1px solid var(--accent);
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 16px;
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 28px;
  border-radius: 99px;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  transition: var(--transition);
  cursor: pointer;
  border: none;
}
.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 0 24px var(--accent-glow);
}
.btn-primary:hover { background: #6ba3f8; transform: translateY(-2px); box-shadow: 0 0 36px var(--accent-glow); }
.btn-outline {
  border: 1.5px solid rgba(255,255,255,0.25);
  color: var(--text);
  background: transparent;
}
.btn-outline:hover { border-color: var(--accent); color: var(--accent); background: var(--accent-glow); }

/* ═══════════════════════════
   NAVBAR
   ═══════════════════════════ */
#navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 0;
  transition: var(--transition);
  border-bottom: 1px solid transparent;
}
#navbar.scrolled {
  background: rgba(8,12,20,0.9);
  backdrop-filter: blur(20px);
  border-bottom-color: var(--border);
}
.nav-container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 24px;
  height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  transition: opacity var(--transition);
  flex-shrink: 0;
}
.nav-logo:hover { opacity: 0.75; }

.nav-logo-img {
  height: 38px;
  width: 38px;
  flex-shrink: 0;
}
.nav-logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.25;
}
.logo-abbr {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--accent);
  letter-spacing: 0.06em;
}
.logo-sub {
  font-size: 0.58rem;
  color: var(--text-muted);
  letter-spacing: 0.02em;
  white-space: nowrap;
}

/* Hero brand block */
.hero-brand {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 32px;
}
.hero-brand-abbr {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.18em;
  text-transform: uppercase;
}
.hero-brand-zh {
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--text);
  letter-spacing: 0.04em;
}
.hero-brand-en {
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.5;
}
.nav-links {
  display: flex;
  list-style: none;
  gap: 22px;
  flex-wrap: nowrap;
}
.nav-links a {
  text-decoration: none;
  color: var(--text-muted);
  font-size: 0.78rem;
  font-weight: 500;
  transition: color var(--transition);
  position: relative;
  white-space: nowrap;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0; right: 0;
  height: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transition: transform var(--transition);
}
.nav-links a:hover { color: var(--text); }
.nav-links a:hover::after { transform: scaleX(1); }

.nav-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* Language toggle button */
.lang-btn {
  padding: 5px 14px;
  border-radius: 99px;
  border: 1.5px solid rgba(255,255,255,0.2);
  background: transparent;
  color: var(--text-muted);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}
.lang-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-glow);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.nav-toggle span {
  display: block;
  width: 24px; height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: var(--transition);
}

/* ═══════════════════════════
   HERO
   ═══════════════════════════ */
#hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  background:
    linear-gradient(180deg,
      rgba(8, 11, 23, 0.55) 0%,
      rgba(8, 11, 23, 0.35) 35%,
      rgba(8, 11, 23, 0.75) 80%,
      rgba(8, 11, 23, 0.98) 100%),
    url('hero-bg.webp') center center / cover no-repeat,
    var(--bg);
  padding: 0;
}

/* Starfield */
.stars {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 1;
}
.star {
  position: absolute;
  border-radius: 50%;
  background: #fff;
  animation: twinkle var(--dur, 3s) ease-in-out infinite var(--delay, 0s);
}
@keyframes twinkle {
  0%, 100% { opacity: var(--op, 0.4); }
  50% { opacity: 0.05; }
}

/* Meteors — two pseudo-elements streaking diagonally */
.stars::before,
.stars::after {
  content: '';
  position: absolute;
  width: 2px;
  height: 90px;
  background: linear-gradient(to bottom,
    rgba(255, 255, 255, 0) 0%,
    rgba(255, 255, 255, 0.95) 50%,
    rgba(255, 255, 255, 0) 100%);
  border-radius: 50%;
  filter: blur(0.4px) drop-shadow(0 0 4px rgba(180, 200, 255, 0.7));
  opacity: 0;
  transform: rotate(215deg);
}
.stars::before {
  top: -10%;
  left: 75%;
  animation: meteor 9s linear infinite;
  animation-delay: 2s;
}
.stars::after {
  top: -10%;
  left: 45%;
  animation: meteor 13s linear infinite;
  animation-delay: 7s;
}
@keyframes meteor {
  0%   { opacity: 0; transform: translate(0, 0) rotate(215deg); }
  4%   { opacity: 1; }
  18%  { opacity: 0.9; }
  25%  { opacity: 0; transform: translate(-380px, 520px) rotate(215deg); }
  100% { opacity: 0; transform: translate(-380px, 520px) rotate(215deg); }
}
@media (prefers-reduced-motion: reduce) {
  .stars::before, .stars::after { animation: none; opacity: 0; }
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 700px;
  padding: 0 24px;
  margin-left: calc((100vw - 1160px) / 2);
  margin-left: max(24px, calc((100vw - 1160px) / 2));
}
.hero-eyebrow {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--accent);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 20px;
  color: var(--text-muted);
}
.hero-title {
  font-size: clamp(2.2rem, 5.5vw, 4.4rem);
  font-weight: 800;
  line-height: 1.15;
  background: linear-gradient(135deg, #fff 0%, #a8c4f0 50%, #7b5ef6 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 24px;
}
.hero-subtitle {
  font-size: clamp(0.9rem, 1.5vw, 1.05rem);
  color: var(--text-muted);
  line-height: 1.85;
  margin-bottom: 40px;
  max-width: 560px;
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }

/* Orbit animation */
.hero-orbit {
  position: absolute;
  right: 8%;
  top: 50%;
  transform: translateY(-50%);
  width: 500px;
  height: 500px;
  pointer-events: none;
  opacity: 0.35;
}
.orbit {
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(79,142,247,0.3);
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  animation: spin linear infinite;
}
.orbit-1 { width: 180px; height: 180px; animation-duration: 8s; }
.orbit-2 { width: 320px; height: 320px; animation-duration: 14s; animation-direction: reverse; }
.orbit-3 { width: 460px; height: 460px; animation-duration: 22s; }
@keyframes spin { to { transform: translate(-50%, -50%) rotate(360deg); } }

.planet {
  position: absolute;
  border-radius: 50%;
  top: -6px; left: 50%;
  transform: translateX(-50%);
}
.p1 { width: 12px; height: 12px; background: var(--accent); box-shadow: 0 0 12px var(--accent); }
.p2 { width: 8px; height: 8px; background: var(--accent-2); box-shadow: 0 0 8px var(--accent-2); }
.p3 { width: 10px; height: 10px; background: #34d399; box-shadow: 0 0 10px #34d399; }

.hero-scroll-hint {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--text-dim);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.scroll-arrow {
  width: 20px; height: 20px;
  border-right: 2px solid var(--text-dim);
  border-bottom: 2px solid var(--text-dim);
  transform: rotate(45deg);
  animation: bounce 1.8s ease-in-out infinite;
}
@keyframes bounce {
  0%, 100% { transform: rotate(45deg) translateY(0); }
  50% { transform: rotate(45deg) translateY(6px); }
}

/* ═══════════════════════════
   ABOUT
   ═══════════════════════════ */
.about-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  margin-bottom: 56px;
}
.about-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: var(--transition);
}
.about-card:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
  box-shadow: 0 0 32px var(--accent-glow);
}
.about-icon { font-size: 2rem; margin-bottom: 16px; }
.about-card h3 { color: var(--text); margin-bottom: 12px; }

.about-story {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 48px;
}
.story-text h3 { color: var(--text); margin-bottom: 16px; font-size: 1.5rem; }
.story-text p { margin-bottom: 16px; }

.story-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}
.stat-item { text-align: center; }
.stat-number {
  display: block;
  font-size: 3rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: 8px;
}
.stat-label { font-size: 0.85rem; color: var(--text-muted); }

/* ═══════════════════════════
   GROUPS
   ═══════════════════════════ */
#groups { background: var(--bg-3) !important; }

.groups-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}
.group-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  position: relative;
  overflow: hidden;
  transition: var(--transition);
}
.group-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}
.group-card:hover::before { transform: scaleX(1); }
.group-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: rgba(79,142,247,0.2); }

.group-number {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.1em;
  margin-bottom: 12px;
}
.group-icon { font-size: 2.2rem; margin-bottom: 16px; }
.group-card h3 { color: var(--text); margin-bottom: 12px; font-size: 1.1rem; }
.group-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin-top: 20px;
}
.group-tags li {
  padding: 4px 10px;
  background: rgba(79,142,247,0.1);
  border: 1px solid rgba(79,142,247,0.2);
  border-radius: 99px;
  font-size: 0.75rem;
  color: var(--accent);
}

/* ═══════════════════════════
   PROJECTS
   ═══════════════════════════ */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.project-card.featured {
  grid-column: span 2;
}
.project-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  position: relative;
  transition: var(--transition);
}
.project-card:hover {
  border-color: rgba(79,142,247,0.3);
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}
.project-badge {
  display: inline-block;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 99px;
  margin-bottom: 16px;
  letter-spacing: 0.04em;
}
.project-icon { font-size: 2rem; margin-bottom: 12px; }
.project-card h3 { color: var(--text); margin-bottom: 10px; }
.project-status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.78rem;
  font-weight: 600;
  margin-top: 16px;
  padding: 4px 12px;
  border-radius: 99px;
}
.project-status::before {
  content: '';
  width: 6px; height: 6px;
  border-radius: 50%;
}
.project-status.active { background: rgba(52,211,153,0.1); color: var(--success); }
.project-status.active::before { background: var(--success); box-shadow: 0 0 6px var(--success); animation: pulse 1.5s ease-in-out infinite; }
.project-status.done { background: rgba(148,163,184,0.1); color: var(--text-muted); }
.project-status.done::before { background: var(--text-muted); }

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

/* ═══════════════════════════
   ROADMAP
   ═══════════════════════════ */
#roadmap { background: var(--bg) !important; }

.roadmap-container {
  max-width: 860px;
  margin: 0 auto;
}
.roadmap-phase {
  display: grid;
  grid-template-columns: 40px 1fr;
  gap: 0 32px;
  margin-bottom: 0;
}
.phase-marker {
  display: flex;
  flex-direction: column;
  align-items: center;
}
.phase-dot {
  width: 16px; height: 16px;
  border-radius: 50%;
  border: 3px solid var(--surface-2);
  flex-shrink: 0;
  position: relative;
  z-index: 1;
  margin-top: 6px;
}
.phase-dot.completed {
  background: var(--success);
  border-color: var(--success);
  box-shadow: 0 0 12px rgba(52,211,153,0.5);
}
.phase-dot.current {
  background: var(--accent);
  border-color: var(--accent);
  box-shadow: 0 0 16px var(--accent-glow);
  animation: ring 2s ease-in-out infinite;
}
@keyframes ring {
  0%, 100% { box-shadow: 0 0 16px var(--accent-glow), 0 0 0 0 var(--accent-glow); }
  50% { box-shadow: 0 0 16px var(--accent-glow), 0 0 0 8px transparent; }
}
.phase-dot.upcoming {
  background: var(--surface-2);
  border-color: var(--text-dim);
}
.phase-line {
  width: 2px;
  flex: 1;
  background: linear-gradient(to bottom, var(--surface-2), transparent);
  margin: 8px 0;
  min-height: 40px;
}

.phase-content {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 32px;
  margin-bottom: 32px;
  transition: var(--transition);
}
.phase-content:hover { border-color: rgba(79,142,247,0.25); }

.phase-header {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 12px;
}
.phase-label {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.phase-period {
  font-size: 0.85rem;
  color: var(--text-muted);
  background: var(--surface-2);
  padding: 2px 10px;
  border-radius: 99px;
}
.phase-status {
  font-size: 0.72rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 99px;
  margin-left: auto;
}
.completed-badge { background: rgba(52,211,153,0.15); color: var(--success); }
.current-badge   { background: rgba(79,142,247,0.15); color: var(--accent); }
.upcoming-badge  { background: rgba(251,191,36,0.12); color: var(--warning); }
.future-badge    { background: rgba(123,94,246,0.15); color: var(--accent-2); }

.phase-content h3 { color: var(--text); margin-bottom: 10px; font-size: 1.15rem; }

.phase-milestones {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 8px;
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
}
.phase-milestones li {
  font-size: 0.85rem;
  color: var(--text-muted);
  padding: 6px 10px;
  border-radius: 8px;
  background: var(--surface-2);
}
.phase-milestones li.done { color: var(--success); }
.phase-milestones li.in-progress { color: var(--warning); }
.phase-milestones li.pending { color: var(--text-dim); }

/* ═══════════════════════════
   EVENTS
   ═══════════════════════════ */
#events { background: var(--bg-2) !important; }

.events-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
  max-width: 860px;
  margin: 0 auto;
}
.event-item {
  display: flex;
  gap: 24px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px 28px;
  transition: var(--transition);
}
.event-item:hover { border-color: rgba(79,142,247,0.25); transform: translateX(4px); }
.event-date {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-width: 64px;
  border-right: 1px solid var(--border);
  padding-right: 24px;
}
.event-month { font-size: 0.75rem; font-weight: 700; color: var(--accent); letter-spacing: 0.1em; }
.event-year  { font-size: 0.9rem; color: var(--text-muted); font-weight: 500; }
.event-body { flex: 1; }
.event-body h4 { color: var(--text); margin-bottom: 8px; font-size: 1rem; font-weight: 600; }
.event-body p { font-size: 0.9rem; }
.event-tag {
  display: inline-block;
  margin-top: 10px;
  padding: 3px 10px;
  background: rgba(79,142,247,0.1);
  border: 1px solid rgba(79,142,247,0.2);
  border-radius: 99px;
  font-size: 0.72rem;
  color: var(--accent);
  font-weight: 600;
}

/* ═══════════════════════════
   CONTACT
   ═══════════════════════════ */
#contact {
  background: linear-gradient(135deg, #0a0f1e 0%, #111827 40%, #0d1120 100%) !important;
  position: relative;
  overflow: hidden;
}
#contact::before {
  content: '';
  position: absolute;
  top: -200px; left: 50%;
  transform: translateX(-50%);
  width: 800px; height: 800px;
  background: radial-gradient(circle, rgba(79,142,247,0.06) 0%, transparent 70%);
  pointer-events: none;
}
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
  max-width: 860px;
  margin: 0 auto;
}
.contact-card {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-lg);
  padding: 28px;
  text-align: center;
  transition: var(--transition);
}
.contact-card:hover {
  background: rgba(79,142,247,0.08);
  border-color: rgba(79,142,247,0.3);
  transform: translateY(-4px);
}
.contact-icon { font-size: 2rem; margin-bottom: 12px; }
.contact-card h4 { color: rgba(255,255,255,0.6); font-size: 0.8rem; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; margin-bottom: 8px; }
.contact-card a { color: var(--text); text-decoration: none; font-weight: 500; font-size: 0.95rem; transition: color var(--transition); }
.contact-card a:hover { color: var(--accent); }

/* ═══════════════════════════
   FOOTER
   ═══════════════════════════ */
footer {
  background: #04060c;
  border-top: 1px solid var(--border);
  padding: 48px 0 24px;
}
.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 48px;
  margin-bottom: 32px;
  flex-wrap: wrap;
}
.footer-logo-img {
  height: 44px;
  width: auto;
  display: block;
  opacity: 0.85;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 24px;
  align-items: center;
}
.footer-links a { color: var(--text-muted); text-decoration: none; font-size: 0.9rem; transition: color var(--transition); }
.footer-links a:hover { color: var(--accent); }
.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 20px;
  text-align: center;
}
.footer-bottom p { font-size: 0.8rem; color: var(--text-dim); }

/* ═══════════════════════════
   ANIMATIONS
   ═══════════════════════════ */
[data-animate] {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
[data-animate].visible {
  opacity: 1;
  transform: none;
}

/* ═══════════════════════════
   RESPONSIVE
   ═══════════════════════════ */
@media (max-width: 900px) {
  .hero-orbit { opacity: 0.15; right: 0; }
  .about-story { grid-template-columns: 1fr; }
  .projects-grid { grid-template-columns: 1fr 1fr; }
  .project-card.featured { grid-column: span 1; }
}

@media (max-width: 700px) {
  section { padding: 72px 0; }
  .nav-links {
    display: none;
    position: fixed;
    top: 68px; left: 0; right: 0;
    background: rgba(8,12,20,0.97);
    backdrop-filter: blur(20px);
    flex-direction: column;
    align-items: center;
    padding: 24px 0;
    gap: 20px;
    border-bottom: 1px solid var(--border);
  }
  .nav-links.open { display: flex; }
  .nav-toggle { display: flex; }
  .nav-right { gap: 8px; }
  .hero-orbit { display: none; }
  .hero-content { margin-left: 0; }
  .projects-grid { grid-template-columns: 1fr; }
  .phase-milestones { grid-template-columns: 1fr; }
  .about-story { padding: 28px; gap: 32px; }
  .footer-content { flex-direction: column; gap: 24px; }
  .footer-links { flex-direction: column; align-items: flex-start; }
  .story-stats { grid-template-columns: repeat(2, 1fr); gap: 24px; }
}

@media (max-width: 480px) {
  .hero-title { font-size: 2.4rem; }
  .hero-actions { flex-direction: column; align-items: flex-start; }
  .event-item { flex-direction: column; gap: 12px; }
  .event-date { flex-direction: row; gap: 8px; border-right: none; border-bottom: 1px solid var(--border); padding-right: 0; padding-bottom: 12px; }
}

/* ═══════════════════════════════════════════════════════
   MEMBER AUTH & LOGIN MODAL
   ═══════════════════════════════════════════════════════ */

/* Member button in navbar */
.member-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 5px 13px;
  border-radius: 99px;
  border: 1.5px solid rgba(255,255,255,0.15);
  background: transparent;
  color: var(--text-muted);
  font-family: inherit;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}
.member-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-glow);
}
.member-btn.logged-in {
  border-color: rgba(52,211,153,0.5);
  color: var(--success);
}
.member-btn.logged-in:hover {
  background: rgba(52,211,153,0.1);
  border-color: var(--success);
}
.member-btn svg { width: 13px; height: 13px; flex-shrink: 0; }

/* Login Modal Overlay */
.login-overlay {
  position: fixed;
  inset: 0;
  background: rgba(8,12,20,0.88);
  backdrop-filter: blur(10px);
  z-index: 9000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
}
.login-overlay.active { opacity: 1; pointer-events: all; }
.login-modal {
  background: var(--surface);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius-lg);
  padding: 40px 36px 32px;
  width: min(420px, calc(100vw - 32px));
  box-shadow: var(--shadow-lg), 0 0 60px rgba(79,142,247,0.1);
  transform: translateY(24px) scale(0.96);
  transition: transform 0.32s cubic-bezier(0.34,1.4,0.64,1);
  position: relative;
}
.login-overlay.active .login-modal { transform: translateY(0) scale(1); }
.login-modal-close {
  position: absolute;
  top: 14px; right: 14px;
  background: none;
  border: none;
  color: var(--text-dim);
  font-size: 1.3rem;
  line-height: 1;
  cursor: pointer;
  padding: 6px 9px;
  border-radius: 8px;
  transition: color 0.2s, background 0.2s;
}
.login-modal-close:hover { color: var(--text); background: var(--surface-2); }
.login-modal-icon {
  width: 50px; height: 50px;
  background: var(--accent-glow);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  border: 1px solid rgba(79,142,247,0.3);
}
.login-modal-icon svg { width: 24px; height: 24px; color: var(--accent); }
.login-modal-logo { width: 36px; height: 36px; object-fit: contain; }
.login-modal h3 { font-size: 1.3rem; margin-bottom: 6px; color: var(--text); }
.login-subtitle { color: var(--text-muted); font-size: 0.88rem; margin-bottom: 24px; }
.login-input-row { display: flex; gap: 10px; margin-bottom: 10px; }
.login-input {
  flex: 1;
  padding: 10px 14px;
  background: var(--bg-3);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-family: inherit;
  font-size: 0.92rem;
  outline: none;
  transition: border-color 0.2s;
}
.login-input:focus { border-color: var(--accent); }
.login-input::placeholder { color: var(--text-dim); }
.login-submit {
  padding: 10px 18px;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: var(--radius);
  font-family: inherit;
  font-size: 0.92rem;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 0.2s, transform 0.15s;
  white-space: nowrap;
}
.login-submit:hover { opacity: 0.88; transform: translateY(-1px); }
.login-submit:active { transform: translateY(0); }
.login-error { font-size: 0.82rem; color: #f87171; min-height: 18px; }
.login-error:empty { opacity: 0; }

/* ═══════════════════════════════════════════════════════
   MEMBER ZONE in Roadmap
   ═══════════════════════════════════════════════════════ */
.member-zone {
  margin-top: 22px;
  padding-top: 18px;
  border-top: 1px solid var(--border);
}
.member-zone-locked {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 12px 16px;
  border-radius: var(--radius);
  background: var(--bg-3);
  border: 1px dashed rgba(255,255,255,0.07);
  color: var(--text-dim);
  font-size: 0.84rem;
  cursor: pointer;
  transition: var(--transition);
  user-select: none;
}
.member-zone-locked:hover {
  border-color: rgba(79,142,247,0.4);
  color: var(--accent);
  background: var(--accent-glow);
}
.member-zone-locked svg { width: 14px; height: 14px; flex-shrink: 0; }
.member-zone-content { display: none; }
.member-zone-content.visible { display: block; }
.member-zone-header {
  display: flex;
  align-items: center;
  gap: 7px;
  margin-bottom: 16px;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.member-zone-header svg { width: 14px; height: 14px; }
.member-section-title {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 10px;
}
.member-photo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
  gap: 8px;
  margin-bottom: 20px;
}
.member-photo-item {
  border-radius: 8px;
  overflow: hidden;
  aspect-ratio: 4/3;
  background: var(--surface-2);
  position: relative;
  cursor: pointer;
}
.member-photo-item img {
  width: 100%; height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.3s ease;
}
.member-photo-item:hover img { transform: scale(1.06); }
.member-photo-caption {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  background: linear-gradient(transparent, rgba(0,0,0,0.75));
  color: #fff;
  font-size: 0.7rem;
  padding: 14px 7px 6px;
  opacity: 0;
  transition: opacity 0.2s;
}
.member-photo-item:hover .member-photo-caption { opacity: 1; }
.member-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 18px;
  background: var(--bg-3);
  border-radius: var(--radius);
  border: 1px dashed rgba(255,255,255,0.06);
  color: var(--text-dim);
  font-size: 0.82rem;
  text-align: center;
  margin-bottom: 16px;
  gap: 7px;
}
.member-empty svg { width: 26px; height: 26px; opacity: 0.35; }
.member-meeting-list { display: flex; flex-direction: column; gap: 9px; }
.member-meeting-item {
  padding: 12px 14px;
  background: var(--bg-3);
  border-radius: var(--radius);
  border-left: 3px solid var(--accent-2);
}
.member-meeting-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 4px;
}
.member-meeting-date { font-size: 0.75rem; color: var(--accent); font-weight: 700; letter-spacing: 0.04em; }
.member-meeting-title { font-size: 0.88rem; font-weight: 600; color: var(--text); }
.member-meeting-summary { font-size: 0.82rem; color: var(--text-muted); line-height: 1.6; }

/* Photo lightbox */
.photo-lightbox {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.93);
  z-index: 9500;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s;
  cursor: zoom-out;
}
.photo-lightbox.active { opacity: 1; pointer-events: all; }
.photo-lightbox img {
  max-width: min(90vw, 900px);
  max-height: 85vh;
  object-fit: contain;
  border-radius: 8px;
  box-shadow: var(--shadow-lg);
}
.photo-lightbox-caption {
  position: absolute;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  color: rgba(255,255,255,0.82);
  font-size: 0.85rem;
  background: rgba(0,0,0,0.55);
  padding: 6px 16px;
  border-radius: 20px;
  white-space: nowrap;
}

/* ── Upload toolbar (board members) ── */
.upload-toolbar {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}
.upload-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px;
  border-radius: var(--radius);
  border: 1.5px dashed rgba(79,142,247,0.45);
  background: transparent;
  color: var(--accent);
  font-family: inherit;
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}
.upload-btn:hover { background: var(--accent-glow); border-color: var(--accent); }
.upload-btn svg   { width: 13px; height: 13px; flex-shrink: 0; }

/* Delete button on photos */
.photo-delete-btn {
  position: absolute;
  top: 5px; right: 5px;
  width: 22px; height: 22px;
  background: rgba(0,0,0,0.65);
  border: none; border-radius: 50%;
  color: #fff; font-size: 0.9rem; line-height: 1;
  cursor: pointer;
  display: none;
  align-items: center; justify-content: center;
  transition: background 0.2s;
  z-index: 2;
}
.member-photo-item:hover .photo-delete-btn { display: flex; }
.photo-delete-btn:hover { background: rgba(239,68,68,0.9); }

/* Document list */
.member-doc-list { display: flex; flex-direction: column; gap: 7px; margin-bottom: 20px; }
.member-doc-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  background: var(--bg-3);
  border-radius: var(--radius);
  border: 1px solid var(--border);
}
.member-doc-icon { color: var(--accent-2); flex-shrink: 0; }
.member-doc-icon svg { width: 18px; height: 18px; display: block; }
.member-doc-name {
  flex: 1;
  font-size: 0.85rem;
  color: var(--text);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.member-doc-download { font-size: 0.78rem; color: var(--accent); text-decoration: none; white-space: nowrap; }
.member-doc-download:hover { text-decoration: underline; }
.member-doc-delete {
  background: none; border: none;
  color: var(--text-dim); cursor: pointer;
  padding: 2px 5px; border-radius: 4px;
  font-size: 1rem; line-height: 1;
  transition: color 0.2s;
}
.member-doc-delete:hover { color: #f87171; }

/* Meeting add form */
.meeting-add-form {
  display: none;
  background: var(--bg-3);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px;
  margin-bottom: 12px;
}
.meeting-add-form.open { display: block; }
.meeting-form-row { display: flex; gap: 8px; margin-bottom: 8px; }
.meeting-form-input {
  flex: 1; padding: 8px 11px;
  background: var(--bg);
  border: 1px solid var(--border); border-radius: 8px;
  color: var(--text); font-family: inherit; font-size: 0.85rem;
  outline: none;
}
.meeting-form-input:focus { border-color: var(--accent); }
.meeting-form-textarea {
  width: 100%; padding: 8px 11px;
  min-height: 58px; resize: vertical;
  background: var(--bg);
  border: 1px solid var(--border); border-radius: 8px;
  color: var(--text); font-family: inherit; font-size: 0.85rem;
  outline: none; margin-bottom: 8px;
}
.meeting-form-textarea:focus { border-color: var(--accent); }
.meeting-form-actions { display: flex; gap: 8px; justify-content: flex-end; }
.meeting-form-save {
  padding: 6px 18px;
  background: var(--accent); color: #fff;
  border: none; border-radius: 8px;
  font-family: inherit; font-size: 0.82rem; font-weight: 600; cursor: pointer;
}
.meeting-form-cancel {
  padding: 6px 14px;
  background: transparent; color: var(--text-muted);
  border: 1px solid var(--border); border-radius: 8px;
  font-family: inherit; font-size: 0.82rem; cursor: pointer;
}

/* Board badge */
.board-badge {
  display: inline-flex; align-items: center;
  padding: 2px 9px;
  background: rgba(251,191,36,0.12);
  border: 1px solid rgba(251,191,36,0.4);
  border-radius: 99px;
  color: var(--warning);
  font-size: 0.72rem; font-weight: 700; letter-spacing: 0.04em;
}

@media (max-width: 640px) {
  .member-btn-text { display: none; }
  .member-photo-grid { grid-template-columns: repeat(2, 1fr); }
  .login-modal { padding: 28px 20px 24px; }
}