/* ═══════════════════════════════════════════════
   SSS Summit · Global Styles
   ═══════════════════════════════════════════════ */

:root {
  --bg:        #0a0a0a;
  --bg-2:      #111111;
  --bg-3:      #161616;
  --border:    rgba(255,255,255,0.07);
  --border-hover: rgba(255,255,255,0.15);
  --text:      #f0f0f0;
  --text-muted: #888;
  --text-dim:  #555;
  --accent:    #e8c84a;
  --accent-dim: rgba(232,200,74,0.12);
  --accent-glow: rgba(232,200,74,0.25);
  --white:     #ffffff;
  --radius:    12px;
  --radius-lg: 20px;
  --font:      'IBM Plex Sans Arabic', sans-serif;
  --nav-h:     68px;
  --transition: 0.3s cubic-bezier(0.4,0,0.2,1);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  direction: rtl;
  overflow-x: hidden;
  line-height: 1.7;
}

a { text-decoration: none; color: inherit; }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: var(--font); }
input, select, textarea { font-family: var(--font); }

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ─── SCROLLBAR ─── */
::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--text-dim); border-radius: 99px; }

/* ═══ NAVBAR ═══════════════════════════════════ */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 999;
  height: var(--nav-h);
  background: transparent;
  transition: background var(--transition), border-bottom var(--transition), backdrop-filter var(--transition);
}
.nav.scrolled {
  background: rgba(10,10,10,0.85);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}
.nav-container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* Logo */
.logo {
  display: flex;
  align-items: baseline;
  gap: 2px;
  font-weight: 700;
  font-size: 1.4rem;
  letter-spacing: -0.5px;
  color: var(--white);
}
.logo-s {
  color: var(--accent);
  font-style: italic;
  font-size: 1.5rem;
}
.logo-sup {
  font-size: 0.65rem;
  color: var(--accent);
  margin-bottom: 4px;
  vertical-align: super;
  font-weight: 600;
}
.logo-text {
  font-size: 1rem;
  color: var(--text-muted);
  font-weight: 400;
  margin-right: 6px;
  letter-spacing: 0.5px;
}

/* Nav links */
.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}
.nav-links a {
  font-size: 0.875rem;
  color: var(--text-muted);
  font-weight: 500;
  transition: color var(--transition);
  position: relative;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px; right: 0;
  width: 0; height: 1px;
  background: var(--accent);
  transition: width var(--transition);
}
.nav-links a:hover { color: var(--text); }
.nav-links a:hover::after { width: 100%; }
.nav-links .nav-cta {
  color: var(--accent);
  background: var(--accent-dim);
  border: 1px solid rgba(232,200,74,0.25);
  padding: 7px 18px;
  border-radius: 99px;
  font-size: 0.85rem;
}
.nav-links .nav-cta::after { display: none; }
.nav-links .nav-cta:hover {
  background: var(--accent-glow);
  color: var(--accent);
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 4px;
}
.hamburger span {
  display: block;
  width: 22px; height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: var(--transition);
}
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile menu */
.mobile-menu {
  display: none;
  flex-direction: column;
  background: rgba(10,10,10,0.97);
  backdrop-filter: blur(20px);
  border-top: 1px solid var(--border);
  padding: 12px 0 20px;
}
.mobile-menu.open { display: flex; }
.mobile-link {
  padding: 12px 28px;
  font-size: 0.95rem;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
  transition: color var(--transition);
}
.mobile-link:hover { color: var(--text); }
.mobile-link.cta {
  color: var(--accent);
  font-weight: 600;
  border: none;
  margin: 12px 24px 0;
  background: var(--accent-dim);
  border-radius: var(--radius);
  text-align: center;
}

/* ═══ BUTTONS ═══════════════════════════════════ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 30px;
  border-radius: 99px;
  font-size: 0.9rem;
  font-weight: 600;
  font-family: var(--font);
  transition: all var(--transition);
  cursor: pointer;
  border: none;
}
.btn-primary {
  background: var(--accent);
  color: #0a0a0a;
}
.btn-primary:hover {
  background: #f2d55e;
  transform: translateY(-2px);
  box-shadow: 0 8px 32px var(--accent-glow);
}
.btn-outline {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border-hover);
}
.btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-2px);
}

/* ═══ HERO ═══════════════════════════════════════ */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;
  padding: calc(var(--nav-h) + 40px) 24px 80px;
  overflow: hidden;
}

/* Hero background */
.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

/* Animated grid */
.grid-lines {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 30%, transparent 100%);
}
.glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.3;
  animation: glowPulse 8s ease-in-out infinite alternate;
}
.glow-1 {
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(232,200,74,0.3), transparent 70%);
  top: -150px; left: 50%;
  transform: translateX(-50%);
}
.glow-2 {
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(232,200,74,0.15), transparent 70%);
  bottom: 0; right: 10%;
  animation-delay: -4s;
}
@keyframes glowPulse {
  0%   { opacity: 0.15; transform: translateX(-50%) scale(1); }
  100% { opacity: 0.35; transform: translateX(-50%) scale(1.1); }
}

.hero-content { position: relative; z-index: 1; max-width: 780px; }

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border: 1px solid rgba(232,200,74,0.3);
  border-radius: 99px;
  font-size: 0.8rem;
  color: var(--accent);
  background: var(--accent-dim);
  margin-bottom: 28px;
  letter-spacing: 0.5px;
}

/* The big S³ logo */
.hero-logo-main {
  display: inline-flex;
  align-items: baseline;
  justify-content: center;
  margin-bottom: 16px;
  line-height: 1;
}
.big-s {
  font-size: clamp(80px, 18vw, 150px);
  font-weight: 700;
  font-style: italic;
  color: var(--accent);
  line-height: 1;
  text-shadow: 0 0 60px var(--accent-glow);
  letter-spacing: -4px;
}
.big-sup {
  font-size: clamp(28px, 5vw, 48px);
  color: var(--white);
  vertical-align: super;
  font-weight: 600;
  margin-right: -4px;
  text-shadow: none;
}

.hero-title {
  font-size: clamp(1.5rem, 4vw, 2.4rem);
  font-weight: 700;
  color: var(--white);
  margin-bottom: 6px;
  letter-spacing: -0.5px;
}
.hero-sub {
  font-size: clamp(0.9rem, 2vw, 1.1rem);
  color: var(--text-muted);
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 18px;
  font-weight: 300;
}
.hero-desc {
  font-size: clamp(0.9rem, 2vw, 1.05rem);
  color: var(--text-muted);
  max-width: 520px;
  margin: 0 auto 36px;
  line-height: 1.8;
}

/* Date blocks */
.hero-date {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  margin-bottom: 40px;
}
.date-block {
  display: flex;
  flex-direction: column;
  align-items: center;
}
.date-num {
  font-size: clamp(2rem, 6vw, 3.5rem);
  font-weight: 700;
  color: var(--white);
  line-height: 1;
  letter-spacing: -2px;
}
.date-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
}
.date-sep {
  font-size: 2rem;
  color: var(--text-dim);
  font-weight: 200;
  margin-bottom: 16px;
}

.hero-actions {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

/* Scroll indicator */
.scroll-indicator {
  position: absolute;
  bottom: 30px; left: 50%;
  transform: translateX(-50%);
  z-index: 1;
}
.scroll-dot {
  width: 4px; height: 40px;
  background: linear-gradient(to bottom, var(--accent), transparent);
  border-radius: 2px;
  animation: scrollAnim 2s ease-in-out infinite;
}
@keyframes scrollAnim {
  0%,100% { opacity: 0.3; transform: scaleY(1); }
  50%      { opacity: 1; transform: scaleY(0.7); }
}

/* ═══ STATS ═════════════════════════════════════ */
.stats {
  padding: 60px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: var(--bg-2);
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2px;
}
.stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 32px 20px;
  border-left: 1px solid var(--border);
  text-align: center;
}
.stat-item:last-child { border-left: none; }
.stat-num {
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
  letter-spacing: -2px;
  margin-bottom: 8px;
}
.stat-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  letter-spacing: 0.5px;
}

/* ═══ SECTION COMMON ════════════════════════════ */
.about-section,
.agenda-section,
.speakers-section,
.register-section {
  padding: 90px 0;
}
.agenda-section { background: var(--bg-2); }
.register-section { background: var(--bg-3); }

.section-header {
  text-align: center;
  margin-bottom: 60px;
}
.section-tag {
  display: inline-block;
  padding: 5px 14px;
  border: 1px solid var(--border-hover);
  border-radius: 99px;
  font-size: 0.75rem;
  color: var(--text-muted);
  letter-spacing: 1px;
  margin-bottom: 14px;
}
.section-title {
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  font-weight: 700;
  color: var(--white);
  letter-spacing: -0.5px;
  line-height: 1.2;
}
.section-desc {
  font-size: 0.95rem;
  color: var(--text-muted);
  margin-top: 12px;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}
.accent { color: var(--accent); }

/* ═══ ABOUT CARDS ═══════════════════════════════ */
.about-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.about-card {
  background: var(--bg);
  padding: 40px 36px;
  transition: background var(--transition);
  cursor: default;
}
.about-card:hover { background: var(--bg-2); }
.about-icon {
  font-size: 2rem;
  margin-bottom: 16px;
}
.about-card h3 {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 10px;
}
.about-card p {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.8;
}

/* ═══ AGENDA ════════════════════════════════════ */
.days-tabs {
  display: flex;
  gap: 2px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: 30px;
}
.day-tab {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 16px 12px;
  background: var(--bg-3);
  color: var(--text-muted);
  font-size: 0.9rem;
  font-weight: 500;
  transition: all var(--transition);
  gap: 4px;
}
.day-tab span {
  font-size: 0.7rem;
  color: var(--text-dim);
  font-weight: 400;
}
.day-tab.active,
.day-tab:hover {
  background: var(--bg);
  color: var(--white);
}
.day-tab.active { color: var(--accent); }
.day-tab.active span { color: var(--accent); opacity: 0.7; }

.day-content { display: flex; flex-direction: column; gap: 2px; }
.agenda-item {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  padding: 20px 24px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color var(--transition);
}
.agenda-item:hover { border-color: var(--border-hover); }
.agenda-time {
  font-size: 0.75rem;
  color: var(--accent);
  font-weight: 600;
  min-width: 70px;
  letter-spacing: 0.5px;
  padding-top: 2px;
}
.agenda-info h4 {
  font-size: 0.95rem;
  color: var(--white);
  font-weight: 600;
  margin-bottom: 4px;
}
.agenda-info p {
  font-size: 0.8rem;
  color: var(--text-muted);
}
.agenda-badge {
  margin-right: auto;
  padding: 3px 10px;
  border-radius: 99px;
  font-size: 0.7rem;
  border: 1px solid var(--border);
  color: var(--text-muted);
  white-space: nowrap;
}
.badge-keynote { border-color: rgba(232,200,74,0.4); color: var(--accent); }
.badge-workshop { border-color: rgba(100,200,150,0.4); color: #64c896; }
.badge-panel   { border-color: rgba(150,150,250,0.4); color: #9696fa; }
.badge-pitch   { border-color: rgba(250,150,100,0.4); color: #fa9664; }
.badge-social  { border-color: rgba(200,100,200,0.4); color: #c864c8; }

/* ═══ SPEAKERS ══════════════════════════════════ */
.speakers-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.speaker-card {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  text-align: center;
  transition: all var(--transition);
}
.speaker-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-4px);
  box-shadow: 0 20px 60px rgba(0,0,0,0.4);
}
.featured-speaker {
  border-style: dashed;
  border-color: rgba(232,200,74,0.2);
}
.speaker-avatar {
  width: 72px; height: 72px;
  border-radius: 50%;
  background: var(--bg-3);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin: 0 auto 16px;
  font-weight: 600;
  letter-spacing: 0.5px;
}
.speaker-card h4 {
  font-size: 0.95rem;
  color: var(--white);
  font-weight: 600;
  margin-bottom: 4px;
}
.speaker-card p {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 8px;
}
.speaker-card span {
  font-size: 0.72rem;
  color: var(--accent);
  background: var(--accent-dim);
  padding: 3px 10px;
  border-radius: 99px;
}

/* ═══ REGISTER ══════════════════════════════════ */
.reg-toggle {
  display: flex;
  gap: 12px;
  justify-content: center;
  margin-bottom: 40px;
  flex-wrap: wrap;
}
.toggle-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 99px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-muted);
  background: var(--bg-2);
  border: 1px solid var(--border);
  transition: all var(--transition);
  font-family: var(--font);
}
.toggle-btn.active {
  background: var(--accent);
  color: #0a0a0a;
  border-color: var(--accent);
  font-weight: 700;
}
.toggle-btn:not(.active):hover {
  border-color: var(--border-hover);
  color: var(--text);
}
.toggle-icon { font-size: 1rem; }

/* Forms */
.forms-container { max-width: 680px; margin: 0 auto; }
.reg-form {
  display: none;
  flex-direction: column;
  gap: 20px;
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 40px;
}
.reg-form.active { display: flex; }

.form-section-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--white);
  display: flex;
  align-items: center;
  gap: 10px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 4px;
}
.fs-icon { font-size: 1.2rem; }

.form-divider {
  display: flex;
  align-items: center;
  gap: 14px;
  color: var(--text-dim);
  font-size: 0.78rem;
  letter-spacing: 0.5px;
  padding: 4px 0;
}
.form-divider::before,
.form-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.form-group {
  display: flex;
  flex-direction: column;
  gap: 7px;
}
.form-group label {
  font-size: 0.82rem;
  color: var(--text-muted);
  font-weight: 500;
}
.req { color: var(--accent); }

.form-group input,
.form-group select,
.form-group textarea {
  background: var(--bg-3);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 0.9rem;
  padding: 11px 14px;
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
  direction: rtl;
}
.form-group select option { background: var(--bg-3); }
.form-group textarea { resize: vertical; min-height: 90px; }
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: rgba(232,200,74,0.4);
  box-shadow: 0 0 0 3px rgba(232,200,74,0.06);
}
.form-group input.error,
.form-group select.error,
.form-group textarea.error {
  border-color: rgba(250,80,80,0.5);
}
.field-error {
  font-size: 0.75rem;
  color: #fa5050;
  min-height: 14px;
}

/* Form check */
.form-check {
  display: flex;
  align-items: center;
  gap: 10px;
}
.form-check input[type="checkbox"] {
  width: 16px; height: 16px;
  border-radius: 4px;
  accent-color: var(--accent);
  cursor: pointer;
  flex-shrink: 0;
}
.form-check label {
  font-size: 0.82rem;
  color: var(--text-muted);
}
.link { color: var(--accent); }
.link:hover { text-decoration: underline; }

/* Submit button */
.btn-submit {
  width: 100%;
  padding: 15px;
  font-size: 0.95rem;
  margin-top: 4px;
  border-radius: var(--radius);
}

/* Success message */
.success-msg {
  max-width: 480px;
  margin: 0 auto;
  text-align: center;
  padding: 60px 40px;
  background: var(--bg-2);
  border: 1px solid rgba(232,200,74,0.2);
  border-radius: var(--radius-lg);
}
.success-icon {
  width: 64px; height: 64px;
  background: var(--accent);
  color: #0a0a0a;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  font-weight: 700;
  margin: 0 auto 24px;
}
.success-msg h3 {
  font-size: 1.4rem;
  color: var(--white);
  margin-bottom: 12px;
}
.success-msg p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.8;
  margin-bottom: 24px;
}

/* ═══ FOOTER ════════════════════════════════════ */
.footer {
  background: var(--bg-2);
  border-top: 1px solid var(--border);
  padding: 60px 0 0;
}
.footer-top {
  display: grid;
  grid-template-columns: 1.8fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 40px;
  border-bottom: 1px solid var(--border);
}
.footer-brand .logo {
  margin-bottom: 14px;
  display: inline-flex;
}
.footer-brand p {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.8;
}
.footer-links-col h4 {
  font-size: 0.8rem;
  color: var(--text-muted);
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 16px;
}
.footer-links-col a {
  display: block;
  font-size: 0.875rem;
  color: var(--text-dim);
  margin-bottom: 10px;
  transition: color var(--transition);
}
.footer-links-col a:hover { color: var(--text); }
.social-links {
  display: flex;
  gap: 8px;
  margin-top: 16px;
}
.social-btn {
  width: 34px; height: 34px;
  background: var(--bg-3);
  border: 1px solid var(--border);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  color: var(--text-muted);
  transition: all var(--transition);
}
.social-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 0;
}
.footer-bottom p {
  font-size: 0.78rem;
  color: var(--text-dim);
}

/* ═══ ANIMATIONS ════════════════════════════════ */
.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ═══ RESPONSIVE ════════════════════════════════ */
@media (max-width: 900px) {
  .nav-links { display: none; }
  .hamburger { display: flex; }
  .about-grid { grid-template-columns: 1fr; }
  .speakers-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-top { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .stat-item:nth-child(2) { border-left: none; }
  .stat-item:nth-child(3) { border-left: 1px solid var(--border); border-top: 1px solid var(--border); }
  .stat-item:nth-child(4) { border-left: none; border-top: 1px solid var(--border); }
}
@media (max-width: 600px) {
  .hero { padding-top: calc(var(--nav-h) + 20px); }
  .big-s { font-size: 80px; }
  .hero-actions { flex-direction: column; align-items: center; }
  .form-row { grid-template-columns: 1fr; }
  .reg-form { padding: 24px 20px; }
  .speakers-grid { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; gap: 6px; text-align: center; }
  .days-tabs { flex-direction: column; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
}