/* error/style.css - Unified Gridcn theme for all HTTP error code pages */

:root {
  --bg-0: #05070f;
  --bg-1: #091322;
  --line: #2af6ff;
  --line-soft: rgba(42, 246, 255, 0.32);
  --hot: #ff3a98;
  --violet: #9657ff;
  --text: #dce7ff;
  --muted: #95a4c9;
}

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

body {
  font-family: 'Rajdhani', sans-serif;
  background: linear-gradient(160deg, #05070f 0%, #091322 100%);
  color: var(--text);
  min-height: 100vh;
  overflow-x: hidden;
}

/* Matrix rain background */
.matrix-bg {
  position: fixed;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  pointer-events: none;
}

.matrix-column {
  position: absolute;
  top: 0;
  font-family: 'JetBrains Mono', monospace;
  font-size: 14px;
  font-weight: 600;
  color: rgba(42, 246, 255, 0.25);
  text-shadow: 0 0 8px rgba(42, 246, 255, 0.35);
  writing-mode: vertical-rl;
  text-orientation: upright;
  letter-spacing: 0;
  animation: matrix-fall linear infinite;
}

@keyframes matrix-fall {
  0% { transform: translateY(-100%); opacity: 0; }
  10% { opacity: 0.3; }
  90% { opacity: 0.3; }
  100% { transform: translateY(100vh); opacity: 0; }
}

/* Main container */
.error-page {
  position: relative;
  z-index: 10;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Navigation bar */
.error-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 1.5rem;
  border-bottom: 1px solid rgba(42, 246, 255, 0.15);
  background: rgba(5, 7, 15, 0.6);
  backdrop-filter: blur(10px);
}

.error-nav-brand {
  font-family: 'Orbitron', sans-serif;
  font-size: 1rem;
  color: var(--line);
  letter-spacing: 0.15em;
  text-decoration: none;
}

.error-nav-links {
  display: flex;
  gap: 1.5rem;
}

.error-nav-links a {
  font-size: 0.8rem;
  color: var(--muted);
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  transition: color 0.2s;
}

.error-nav-links a:hover {
  color: var(--line);
}

/* Content area */
.error-content {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
}

.error-card {
  background: rgba(9, 19, 34, 0.92);
  border: 1px solid rgba(42, 246, 255, 0.18);
  border-radius: 16px;
  padding: 3rem;
  max-width: 600px;
  width: 100%;
  position: relative;
  overflow: hidden;
  text-align: center;
}

.error-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 2px,
    rgba(42, 246, 255, 0.012) 2px,
    rgba(42, 246, 255, 0.012) 4px
  );
  pointer-events: none;
}

/* Corner decorations */
.error-card .corner { position: absolute; width: 18px; height: 18px; }
.error-card .corner-tl { top: 0; left: 0; border-top: 2px solid rgba(42, 246, 255, 0.35); border-left: 2px solid rgba(42, 246, 255, 0.35); }
.error-card .corner-tr { top: 0; right: 0; border-top: 2px solid rgba(42, 246, 255, 0.35); border-right: 2px solid rgba(42, 246, 255, 0.35); }
.error-card .corner-bl { bottom: 0; left: 0; border-bottom: 2px solid rgba(42, 246, 255, 0.35); border-left: 2px solid rgba(42, 246, 255, 0.35); }
.error-card .corner-br { bottom: 0; right: 0; border-bottom: 2px solid rgba(42, 246, 255, 0.35); border-right: 2px solid rgba(42, 246, 255, 0.35); }

/* Status code display */
.error-code {
  font-family: 'Orbitron', sans-serif;
  font-size: 6rem;
  font-weight: 800;
  color: var(--line);
  text-shadow: 0 0 30px rgba(42, 246, 255, 0.4), 0 0 60px rgba(42, 246, 255, 0.2);
  line-height: 1;
  margin-bottom: 0.5rem;
  position: relative;
}

.error-code.glitch::before,
.error-code.glitch::after {
  content: attr(data-code);
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.error-code.glitch::before {
  animation: glitch-effect 3s infinite;
  color: var(--hot);
  z-index: -1;
}

.error-code.glitch::after {
  animation: glitch-effect 2s infinite reverse;
  color: var(--violet);
  z-index: -1;
}

@keyframes glitch-effect {
  0%, 100% { transform: translate(0); }
  20% { transform: translate(-2px, 1px); }
  40% { transform: translate(2px, -1px); }
  60% { transform: translate(-1px, 2px); }
  80% { transform: translate(1px, -2px); }
}

.error-class {
  font-size: 0.75rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.2em;
  margin-bottom: 1rem;
}

.error-title {
  font-family: 'Orbitron', sans-serif;
  font-size: 1.25rem;
  color: var(--text);
  margin-bottom: 0.75rem;
}

.error-message {
  font-size: 0.95rem;
  color: var(--muted);
  line-height: 1.6;
  margin-bottom: 2rem;
}

/* Action buttons */
.error-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.error-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border-radius: 8px;
  font-family: 'Orbitron', sans-serif;
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.2s;
}

.error-btn-primary {
  background: linear-gradient(135deg, rgba(42, 246, 255, 0.15), rgba(42, 246, 255, 0.05));
  border: 1px solid rgba(42, 246, 255, 0.3);
  color: var(--line);
}

.error-btn-primary:hover {
  background: linear-gradient(135deg, rgba(42, 246, 255, 0.25), rgba(42, 246, 255, 0.1));
  border-color: rgba(42, 246, 255, 0.5);
}

.error-btn-secondary {
  background: rgba(5, 7, 15, 0.6);
  border: 1px solid rgba(42, 246, 255, 0.15);
  color: var(--muted);
}

.error-btn-secondary:hover {
  border-color: rgba(42, 246, 255, 0.3);
  color: var(--text);
}

/* Index page specific styles */
.error-index {
  max-width: 1100px;
  margin: 0 auto;
  padding: 2rem;
  position: relative;
  z-index: 10;
}

.error-index-header {
  text-align: center;
  margin-bottom: 3rem;
  padding-top: 2rem;
}

.error-index-header h1 {
  font-family: 'Orbitron', sans-serif;
  font-size: 2rem;
  color: var(--line);
  margin-bottom: 0.5rem;
}

.error-index-header p {
  color: var(--muted);
  font-size: 1rem;
}

/* Class tabs */
.class-tabs {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  margin-bottom: 2rem;
  flex-wrap: wrap;
}

.class-tab {
  padding: 0.5rem 1.25rem;
  border-radius: 6px;
  font-family: 'Orbitron', sans-serif;
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  cursor: pointer;
  transition: all 0.2s;
  border: 1px solid rgba(42, 246, 255, 0.15);
  background: rgba(9, 19, 34, 0.6);
  color: var(--muted);
}

.class-tab:hover { border-color: rgba(42, 246, 255, 0.3); color: var(--text); }
.class-tab.active { background: rgba(42, 246, 255, 0.1); border-color: rgba(42, 246, 255, 0.4); color: var(--line); }

/* Class sections */
.class-section { margin-bottom: 3rem; }
.class-section-title {
  font-family: 'Orbitron', sans-serif;
  font-size: 1rem;
  color: var(--line);
  letter-spacing: 0.1em;
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid rgba(42, 246, 255, 0.15);
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.class-badge {
  font-size: 0.6rem;
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  background: rgba(42, 246, 255, 0.1);
  border: 1px solid rgba(42, 246, 255, 0.2);
}

/* Error code grid */
.error-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1rem;
}

.error-grid-item {
  background: rgba(9, 19, 34, 0.7);
  border: 1px solid rgba(42, 246, 255, 0.12);
  border-radius: 10px;
  padding: 1.25rem;
  transition: all 0.2s;
  text-decoration: none;
  display: block;
}

.error-grid-item:hover {
  border-color: rgba(42, 246, 255, 0.3);
  background: rgba(9, 19, 34, 0.9);
  transform: translateY(-2px);
}

.error-grid-code {
  font-family: 'Orbitron', sans-serif;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--line);
  margin-bottom: 0.25rem;
}

.error-grid-class {
  font-size: 0.6rem;
  color: var(--hot);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 0.5rem;
}

.error-grid-name {
  font-size: 0.85rem;
  color: var(--text);
  margin-bottom: 0.25rem;
}

.error-grid-desc {
  font-size: 0.75rem;
  color: var(--muted);
  line-height: 1.4;
}

/* Search bar */
.error-search {
  width: 100%;
  max-width: 400px;
  margin: 0 auto 2rem;
  position: relative;
}

.error-search input {
  width: 100%;
  padding: 0.75rem 1rem 0.75rem 2.5rem;
  background: rgba(9, 19, 34, 0.8);
  border: 1px solid rgba(42, 246, 255, 0.15);
  border-radius: 8px;
  color: var(--text);
  font-size: 0.9rem;
  font-family: 'Rajdhani', sans-serif;
}

.error-search input:focus {
  outline: none;
  border-color: rgba(42, 246, 255, 0.4);
}

.error-search input::placeholder { color: var(--muted); }

.error-search-icon {
  position: absolute;
  left: 0.75rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--muted);
  font-size: 1.1rem;
}

/* Responsive */
@media (max-width: 1280px) {
  .error-index { max-width: 900px; }
}

@media (max-width: 1024px) {
  .error-index { max-width: 700px; }
  .error-grid { grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); }
}

@media (max-width: 768px) {
  .error-code { font-size: 4rem; }
  .error-card { padding: 2rem 1.5rem; }
  .error-grid { grid-template-columns: 1fr; }
  .error-nav-links { display: none; }
  .class-tabs { gap: 0.25rem; }
  .class-tab { padding: 0.4rem 0.75rem; font-size: 0.6rem; }
  .error-index-header h1 { font-size: 1.5rem; }
}

@media (max-width: 480px) {
  .error-code { font-size: 3rem; }
  .error-card { padding: 1.5rem 1rem; }
  .error-content { padding: 1rem; }
  .error-actions { flex-direction: column; }
  .error-btn { width: 100%; justify-content: center; }
  .error-index { padding: 1rem; }
  .class-tabs { gap: 0.15rem; }
  .class-tab { padding: 0.3rem 0.5rem; font-size: 0.55rem; }
}

@media (max-width: 360px) {
  .error-code { font-size: 2.5rem; }
  .error-card { padding: 1rem 0.75rem; }
  .error-title { font-size: 1rem; }
  .error-message { font-size: 0.85rem; }
}