/* ═══════════════════════════════════════════════════════════════
   SOFZENIX HACKFEST — Global Design System
   Theme: Cyberpunk / Dark / SunHacks-inspired
═══════════════════════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Fira+Code:wght@400;500;600;700&family=Inter:wght@400;500;600;700;800&display=swap');

/* ── Custom Properties ──────────────────────────────────────── */
:root {
  --bg-primary:    #000000;
  --bg-surface:    #050505;
  --bg-card:       #0a0a0a;
  --bg-border:     #1a1a1a;
  --neon-yellow:   #FFD700;
  --neon-cyan:     #00F5FF;
  --neon-glow:     rgba(255, 215, 0, 0.15);
  --neon-glow-lg:  rgba(255, 215, 0, 0.35);
  --text-primary:  #ffffff;
  --text-heading:  #ffffff;
  --text-muted:    #888888;
  --text-sub:      #bbbbbb;
  --success:       #39ff14;
  --warning:       #FFD700;
  --danger:        #ff003c;
  --font-mono:     'Fira Code', monospace;
  --font-body:     'Inter', sans-serif;
  --radius:        6px;
  --radius-lg:     12px;
  --transition:    0.3s ease;
}

/* ── Reset ──────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; overflow-x: hidden; }
body {
  background: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  width: 100%;
}
a { color: var(--neon-cyan); text-decoration: none; transition: opacity var(--transition), color var(--transition); }
a:not(.btn):not(.nav-logo-simple):not(.cta-button) { position: relative; }
a:not(.btn):not(.nav-logo-simple):not(.cta-button)::after {
  content: ''; position: absolute; width: 0; height: 1px; bottom: -1px; left: 0;
  background-color: currentColor; transition: width 0.3s ease;
}
a:hover:not(.btn):not(.nav-logo-simple):not(.cta-button)::after {
  width: 100%;
}
a:hover { opacity: 0.9; }
img { max-width: 100%; display: block; }
button, a { touch-action: manipulation; }
input, select, textarea { font-size: 16px !important; }
@supports (-webkit-touch-callout: none) {
  body { min-height: -webkit-fill-available; }
}

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

/* ── Typography ─────────────────────────────────────────────── */
h1,h2,h3,h4,h5 { font-family: var(--font-mono); color: var(--text-heading); line-height: 1.2; }
h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2.2rem); }
h3 { font-size: 1.2rem; }
.mono { font-family: var(--font-mono); }
.text-muted { color: var(--text-muted); }
.text-sub  { color: var(--text-sub); font-size: 0.875rem; }
.text-neon { color: var(--neon-cyan); }
.text-success { color: var(--success); }
.text-warning { color: var(--warning); }
.text-danger  { color: var(--danger); }

/* ── Neon Glow Utilities ────────────────────────────────────── */
.glow-text { text-shadow: 0 0 20px var(--neon-cyan); }
.glow-box  { box-shadow: 0 0 15px var(--neon-glow), inset 0 0 15px rgba(0,245,255,0.03); }
.glow-box-lg { box-shadow: 0 0 30px var(--neon-glow-lg), inset 0 0 20px rgba(0,245,255,0.05); }

/* ── Buttons ────────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 8px; padding: 12px 28px; border: 1px solid var(--neon-cyan);
  background: transparent; color: var(--neon-cyan);
  font-family: var(--font-mono); font-size: 14px; font-weight: 600;
  letter-spacing: 0.08em; border-radius: var(--radius);
  cursor: pointer; transition: all var(--transition);
  text-transform: uppercase;
  will-change: transform, box-shadow;
}
.btn:hover {
  background: var(--neon-cyan); color: #000;
  box-shadow: 0 0 20px var(--neon-glow-lg); 
  transform: translateY(-3px) scale(1.05);
}
.btn-solid { background: var(--neon-cyan); color: #000; }
.btn-solid:hover { 
  background: #00c8d8; 
  box-shadow: 0 0 25px var(--neon-glow-lg); 
  transform: translateY(-3px) scale(1.05);
}
.btn-danger { border-color: var(--danger); color: var(--danger); }
.btn-danger:hover { 
  background: var(--danger); color: #fff; 
  box-shadow: 0 0 20px rgba(255,68,68,0.4); 
  transform: translateY(-3px) scale(1.05);
}
.btn-sm { padding: 7px 16px; font-size: 12px; }
.btn-lg { padding: 16px 40px; font-size: 16px; }
.btn:disabled { opacity: 0.4; cursor: not-allowed; transform: none !important; }
.w-full { width: 100%; }

/* ── Card ───────────────────────────────────────────────────── */
.card {
  background: var(--bg-card); border: 1px solid var(--bg-border);
  border-radius: var(--radius-lg); padding: 28px;
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  will-change: transform, box-shadow;
}
.card:hover { 
  border-color: var(--neon-cyan); 
  box-shadow: 0 10px 30px var(--neon-glow); 
  transform: translateY(-8px) scale(1.02);
}
.card-neon { border-color: var(--neon-cyan); box-shadow: 0 0 15px var(--neon-glow); }

/* ── Form Elements ──────────────────────────────────────────── */
.form-group { display: flex; flex-direction: column; gap: 6px; }
label { font-family: var(--font-mono); font-size: 13px; color: var(--text-primary);
        text-transform: uppercase; letter-spacing: 0.12em; font-weight: 700; }
input, select, textarea {
  width: 100%; padding: 12px 14px;
  background: var(--bg-surface); border: 1px solid var(--bg-border);
  border-radius: var(--radius); color: var(--text-primary);
  font-family: var(--font-body); font-size: 14px;
  transition: border-color var(--transition), box-shadow var(--transition);
}
input:focus, select:focus, textarea:focus {
  outline: none; border-color: var(--neon-cyan);
  box-shadow: 0 0 0 3px rgba(0,245,255,0.12);
}
select option { background: var(--bg-surface); }
.input-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

/* ── Utility: Angled Corners (Cyber-style) ─────────────────── */
.poly-card {
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 15px), calc(100% - 15px) 100%, 0 100%);
  background: var(--bg-card); border: 1px solid var(--bg-border);
}
.poly-btn {
  clip-path: polygon(10px 0%, 100% 0%, calc(100% - 10px) 100%, 0% 100%);
}

/* ── Animation: Reveal on Scroll ───────────────────────────── */
.reveal { opacity: 0; transform: translateY(30px); transition: all 0.8s cubic-bezier(0.2, 0.8, 0.2, 1); }
.reveal.active { opacity: 1; transform: translateY(0); }
.delay-100 { transition-delay: 0.1s; }
.delay-200 { transition-delay: 0.2s; }
.delay-300 { transition-delay: 0.3s; }

/* ── Navbar: Premium Glass ──────────────────────────────────── */
.navbar {
  position: fixed; top: 0; left: 0; width: 100%; z-index: 1000;
  display: flex; justify-content: space-between; align-items: center;
  padding: 20px clamp(16px, 4vw, 60px); transition: all 0.4s ease;
  background: transparent; border-bottom: 1px solid transparent;
  box-sizing: border-box; /* Prevent overflow */
  overflow: hidden; /* Contain all children */
}
.navbar.scrolled {
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  padding: 14px clamp(16px, 4vw, 60px); border-bottom: 1px solid var(--bg-border);
}
.nav-logo {
  font-family: var(--font-mono); font-size: 1.2rem; font-weight: 700;
  color: var(--neon-cyan); letter-spacing: 0.05em;
  flex-shrink: 0; /* Prevent logo from shrinking */
  white-space: nowrap;
}
.nav-logo span { color: var(--text-heading); }
.nav-links { display: flex; gap: 6px; align-items: center; }
.nav-links a {
  padding: 7px 18px;
  font-family: var(--font-mono); font-size: 12px;
  color: var(--text-sub);
  border: 1px solid rgba(0, 245, 255, 0.25);
  border-radius: 20px;
  background: rgba(0, 0, 0, 0.3);
  transition: all var(--transition);
  letter-spacing: 0.04em;
  white-space: nowrap;
}
.nav-links a:hover {
  color: var(--neon-cyan);
  border-color: var(--neon-cyan);
  background: rgba(0, 245, 255, 0.08);
}
.nav-links a.active {
  color: #000;
  background: var(--neon-cyan);
  border-color: var(--neon-cyan);
  font-weight: 700;
}
.nav-links .btn {
  padding: 7px 20px; font-size: 12px;
  border-radius: 20px;
  background: transparent;
  border: 1px solid var(--neon-cyan);
  color: var(--neon-cyan);
}
.nav-links .btn:hover {
  background: var(--neon-cyan);
  color: #000;
}
.hamburger {
  display: none;
  background: rgba(0, 245, 255, 0.05);
  border: 1px solid rgba(0,245,255,0.4);
  border-radius: 8px;
  padding: 8px 12px;
  cursor: pointer;
  color: var(--neon-cyan);
  font-size: 18px;
  flex-shrink: 0; /* CRITICAL: never shrink off screen */
  min-width: 44px; /* always large enough to tap */
  line-height: 1;
  transition: background var(--transition);
}
.hamburger:hover { background: rgba(0,245,255,0.15); }

/* ── Mobile Nav ─────────────────────────────────────────────── */
.mobile-nav {
  position: fixed; top: 0; right: -300px; width: 280px; height: 100vh;
  background: var(--bg-surface); border-left: 1px solid var(--bg-border);
  z-index: 1100; display: flex; flex-direction: column; padding: 32px 20px;
  transition: right 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  will-change: right;
  overflow-y: auto;
}
.mobile-nav.active { right: 0; } /* Slide in */
.mobile-nav a { display: block; padding: 14px 16px; margin-bottom: 6px;
                font-family: var(--font-mono); font-size: 14px; color: var(--text-primary);
                border: 1px solid var(--bg-border); border-radius: var(--radius);
                transition: all var(--transition); }
.mobile-nav a:hover { border-color: var(--neon-cyan); color: var(--neon-cyan); }
.mobile-nav-close { background: none; border: none; color: var(--text-muted);
                    font-size: 24px; cursor: pointer; align-self: flex-end; margin-bottom: 24px; }
.overlay { display: none; position: fixed; inset: 0; background: rgba(0,0,0,0.7);
            z-index: 1090; cursor: pointer; } /* z-index below mobile-nav but above content */
.overlay.active { display: block; }

/* ── Sidebar (Dashboard) ────────────────────────────────────── */
.page-layout { display: flex; min-height: calc(100vh - 61px); }
.sidebar {
  width: clamp(200px, 18vw, 260px); min-width: 200px; background: var(--bg-surface);
  border-right: 1px solid var(--bg-border); padding: 24px 16px;
  display: flex; flex-direction: column; gap: 4px;
  position: sticky; top: 61px; height: calc(100vh - 61px); overflow-y: auto;
}
.sidebar-title { font-family: var(--font-mono); font-size: 11px; color: var(--text-muted);
                  text-transform: uppercase; letter-spacing: 0.12em; padding: 0 10px;
                  margin-bottom: 8px; }
.sidebar a {
  display: flex; align-items: center; gap: 10px; padding: 10px 12px;
  border-radius: var(--radius); font-size: 14px; color: var(--text-sub);
  border: 1px solid transparent; transition: all var(--transition);
}
.sidebar a:hover { color: var(--text-primary); background: var(--bg-card);
                    border-color: var(--bg-border); }
.sidebar a.active { color: var(--neon-cyan); background: rgba(0,245,255,0.06);
                     border-color: var(--neon-cyan); }
.sidebar .logout { margin-top: auto; color: var(--danger); }
.sidebar .logout:hover { border-color: var(--danger); background: rgba(255,68,68,0.06); }
.main-content { flex: 1; padding: clamp(20px, 3vw, 40px) clamp(16px, 4vw, 48px); overflow-x: hidden; }

/* ── Stat / Info Cards ──────────────────────────────────────── */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 20px; }
.stat-card {
  background: var(--bg-card); border: 1px solid var(--bg-border);
  border-radius: var(--radius-lg); padding: 24px;
  border-top: 2px solid var(--neon-cyan);
  transition: box-shadow var(--transition);
}
.stat-card:hover { box-shadow: 0 0 20px var(--neon-glow); }
.stat-number { font-family: var(--font-mono); font-size: 2.2rem; font-weight: 700;
               color: var(--neon-cyan); line-height: 1; }
.stat-label  { font-size: 13px; color: var(--text-muted); margin-top: 8px; }

/* ── Toast Notification ─────────────────────────────────────── */
#toast {
  position: fixed; bottom: 24px; right: 24px; z-index: 9999;
  padding: 14px 22px; border-radius: var(--radius);
  font-family: var(--font-mono); font-size: 13px;
  display: none; min-width: 260px;
  border: 1px solid transparent;
  animation: slideInRight 0.3s ease;
}
#toast.show { display: block; }
#toast.success { background: rgba(0,255,136,0.12); border-color: var(--success); color: var(--success); }
#toast.error   { background: rgba(255,68,68,0.12);  border-color: var(--danger);  color: var(--danger); }
#toast.info    { background: rgba(0,245,255,0.12);  border-color: var(--neon-cyan); color: var(--neon-cyan); }
@keyframes slideInRight { from { transform: translateX(60px); opacity: 0; } to { transform: translateX(0); opacity: 1; } }

/* ── Badge ──────────────────────────────────────────────────── */
.badge { display: inline-block; padding: 3px 10px; border-radius: 20px;
         font-family: var(--font-mono); font-size: 11px; font-weight: 600; text-transform: uppercase; }
.badge-verified   { background: rgba(0,255,136,0.12); color: var(--success); border: 1px solid var(--success); }
.badge-pending    { background: rgba(255,204,0,0.12); color: var(--warning); border: 1px solid var(--warning); }
.badge-used       { background: rgba(255,68,68,0.12);  color: var(--danger);  border: 1px solid var(--danger); }
.badge-active     { background: rgba(0,245,255,0.12);  color: var(--neon-cyan); border: 1px solid var(--neon-cyan); }

/* ── Table ──────────────────────────────────────────────────── */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
thead th {
  font-family: var(--font-mono); font-size: 11px; text-transform: uppercase;
  letter-spacing: 0.1em; color: var(--text-muted); padding: 12px 16px;
  border-bottom: 1px solid var(--bg-border); text-align: left;
}
tbody td { padding: 12px 16px; font-size: 13px; border-bottom: 1px solid var(--bg-border); }
tbody tr:hover { background: rgba(255,255,255,0.02); }

/* ── Modal ──────────────────────────────────────────────────── */
.modal-overlay {
  position: fixed; inset: 0; background: rgba(0,0,0,0.8);
  backdrop-filter: blur(6px); display: none; justify-content: center;
  align-items: center; z-index: 2000;
}
.modal-overlay.active { display: flex; }
.modal {
  background: var(--bg-surface); border: 1px solid var(--neon-cyan);
  border-radius: var(--radius-lg); padding: 36px; width: min(92vw, 480px);
  box-shadow: 0 0 40px var(--neon-glow);
  animation: fadeUp 0.3s ease;
}
@keyframes fadeUp { from { transform: translateY(20px); opacity: 0; } to { transform: translateY(0); opacity: 1; } }
.modal-title { font-family: var(--font-mono); font-size: 1.1rem; color: var(--neon-cyan);
               margin-bottom: 24px; display: flex; align-items: center; gap: 10px; }
.modal-close { background:none; border:none; color:var(--text-muted);
               font-size:20px; cursor:pointer; margin-left:auto; }

/* ── Footer ──────────────────────────────────────────────────── */
.site-footer {
  background: var(--bg-surface); border-top: 1px solid var(--bg-border);
  text-align: center; padding: 20px;
  font-family: var(--font-mono); font-size: 12px; color: var(--text-muted);
}
.site-footer b { color: var(--neon-cyan); }

/* ── Spinner ─────────────────────────────────────────────────── */
.spinner {
  width: 32px; height: 32px; border-radius: 50%;
  border: 2px solid var(--bg-border); border-top-color: var(--neon-cyan);
  animation: spin 0.8s linear infinite; margin: 0 auto 16px;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ── Section Header ──────────────────────────────────────────── */
.section-head { margin-bottom: 28px; }
.section-head h2 { font-size: 1.4rem; margin-bottom: 4px; }
.section-head p  { color: var(--text-muted); font-size: 13px; }
.section-divider { border: none; border-top: 1px solid var(--bg-border); margin: 32px 0; }

/* ── File Upload Drop Zone ───────────────────────────────────── */
.drop-zone {
  border: 2px dashed var(--bg-border); border-radius: var(--radius);
  padding: 24px; text-align: center; cursor: pointer; color: var(--text-muted);
  font-size: 13px; transition: all var(--transition);
}
.drop-zone:hover { border-color: var(--neon-cyan); color: var(--neon-cyan); }
.drop-zone.has-file { border-color: var(--success); color: var(--success); }

/* ── Mobile Responsive ───────────────────────────────────────── */
@media (max-width: 1024px) {
  .sidebar { position: fixed; left: -280px; top: 0; height: 100vh; width: 260px; min-width: 260px;
              z-index: 1200; transition: left 0.3s ease; }
  .sidebar.open { left: 0; }
  .main-content { padding: 20px; }
}
@media (max-width: 768px) {
  /* Navbar: keep content within bounds */
  .navbar {
    padding: 14px 16px;
    gap: 10px;
    overflow: visible; /* allow dropdown but clip hamburger jitter */
  }
  .nav-links { display: none; }
  .hamburger {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 0;
    flex-shrink: 0;
  }
  .input-row { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  /* Prevent any horizontal overflow */
  html, body {
    overflow-x: hidden;
    max-width: 100%;
  }
  /* Content sections: no horizontal bleed */
  section, .card, .reg-container, .login-container {
    max-width: 100%;
    overflow-x: hidden;
  }
}
@media (max-width: 480px) {
  .stats-grid { grid-template-columns: 1fr; }
  h1 { font-size: 1.8rem; }
  .navbar { padding: 12px 12px; }
  .hamburger { padding: 7px 10px; font-size: 16px; }
  /* Toast smaller on mobile */
  #toast { right: 12px; bottom: 12px; min-width: 200px; font-size: 12px; }
}

/* ── Sponsor Ticker ────────────────────────────────────────── */
.sponsor-ticker {
  background: var(--bg-surface); border-top: 1px solid var(--bg-border);
  border-bottom: 1px solid var(--bg-border); padding: 12px 0; overflow: hidden;
  margin: 40px 0;
}
.ticker-track {
  display: flex; white-space: nowrap; gap: 40px;
  animation: ticker 25s linear infinite;
}
.ticker-track span {
  font-family: var(--font-mono); font-size: 13px; color: var(--text-muted);
  letter-spacing: 0.1em;
}
@keyframes ticker {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* ── Countdown Timer ───────────────────────────────────────── */
.timer-box {
  display: flex; flex-direction: column; align-items: center;
  background: var(--bg-card); border: 1px solid var(--bg-border);
  padding: 12px 20px; border-radius: var(--radius); min-width: 80px;
}
.timer-box span.stat-val { font-size: 2rem; color: var(--text-primary); }

/* ── Mobile Overrides ───────────────────────────────────────── */
@media (max-width: 768px) {
  #countdown { flex-wrap: wrap; justify-content: center; gap: 10px !important; }
  .timer-box { min-width: 70px; padding: 8px 12px; }
  .timer-box span.stat-val { font-size: 1.5rem; }
}
/* ── Improved Logo Branding ── */
.brand-hero {
  text-align: center;
  padding: 30px 20px 10px;
  background: var(--bg-primary);
  display: flex;
  justify-content: center;
  align-items: center;
  margin-top: 70px; /* Space for fixed navbar */
}
.brand-hero img {
  height: clamp(60px, 15vw, 100px);
  width: auto;
  filter: drop-shadow(0 0 20px rgba(0, 245, 255, 0.4));
  transition: transform 0.3s ease;
}
.brand-hero img:hover { transform: scale(1.05); }

.nav-logo-simple {
  font-family: var(--font-mono);
  font-weight: 800;
  font-size: 1.2rem;
  color: var(--neon-cyan);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
  white-space: nowrap;
  flex-shrink: 1;
}

.nav-logo-simple span {
  overflow: hidden;
  text-overflow: ellipsis;
}