@import url('https://cdn.jsdelivr.net/npm/tailwindcss@2.2.19/dist/tailwind.min.css');
@import url('https://cdn.jsdelivr.net/npm/remixicon@2.5.0/fonts/remixicon.css');

:root {
  --cyber-black: #0a0e17;
  --cyber-dark: #0f1524;
  --cyber-panel: #131b2e;
  --cyber-panel-light: #1a2438;
  --cyber-green: #00ff9d;
  --cyber-green-dim: #00c97f;
  --cyber-cyan: #00d9ff;
  --cyber-purple: #b026ff;
  --cyber-red: #ff2d55;
  --cyber-amber: #ffb800;
  --cyber-border: #253449;
  --cyber-text: #d8e4f0;
  --cyber-text-dim: #8a9bb4;
  --font-mono: 'Courier New', monospace;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--cyber-black);
  color: var(--cyber-text);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background-image:
    linear-gradient(rgba(0, 255, 157, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 255, 157, 0.02) 1px, transparent 1px);
  background-size: 40px 40px;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}
::-webkit-scrollbar-track {
  background: var(--cyber-black);
}
::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, var(--cyber-green), var(--cyber-cyan));
  border-radius: 5px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--cyber-cyan);
}

/* Sticky Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--cyber-dark);
  border-bottom: 1px solid var(--cyber-border);
  box-shadow: 0 2px 20px rgba(0, 255, 157, 0.08);
}

.site-header .logo-glow {
  filter: drop-shadow(0 0 6px rgba(0, 255, 157, 0.5));
}

.nav-link {
  position: relative;
  color: var(--cyber-text-dim);
  transition: color 0.25s ease;
}

.nav-link::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -4px;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--cyber-green), var(--cyber-cyan));
  transition: width 0.3s ease;
}

.nav-link:hover {
  color: var(--cyber-green);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

.nav-link.active {
  color: var(--cyber-green);
}

/* Mobile Menu (visibility controlled by Tailwind 'hidden' class in HTML) */
.mobile-menu {
  background-color: var(--cyber-dark);
  border-top: 1px solid var(--cyber-border);
}

.mobile-menu a {
  color: var(--cyber-text-dim);
  border-bottom: 1px solid rgba(37, 52, 73, 0.5);
}

.mobile-menu a:hover,
.mobile-menu a.active {
  color: var(--cyber-green);
  background-color: rgba(0, 255, 157, 0.05);
}

/* Buttons */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  background: linear-gradient(135deg, var(--cyber-green) 0%, var(--cyber-green-dim) 100%);
  color: var(--cyber-black);
  font-weight: 700;
  padding: 0.75rem 1.75rem;
  border-radius: 4px;
  border: 1px solid var(--cyber-green);
  transition: all 0.3s ease;
  box-shadow: 0 0 15px rgba(0, 255, 157, 0.25);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-size: 0.9rem;
}

.btn-primary:hover {
  background: var(--cyber-green);
  box-shadow: 0 0 30px rgba(0, 255, 157, 0.55);
  transform: translateY(-2px);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  background: transparent;
  color: var(--cyber-cyan);
  font-weight: 600;
  padding: 0.75rem 1.75rem;
  border-radius: 4px;
  border: 1px solid var(--cyber-cyan);
  transition: all 0.3s ease;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-size: 0.9rem;
}

.btn-secondary:hover {
  background: rgba(0, 217, 255, 0.1);
  box-shadow: 0 0 20px rgba(0, 217, 255, 0.35);
  color: #ffffff;
}

.btn-danger {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  background: var(--cyber-red);
  color: #ffffff;
  font-weight: 700;
  padding: 0.75rem 1.75rem;
  border-radius: 4px;
  transition: all 0.3s ease;
}

.btn-danger:hover {
  background: #d61247;
  box-shadow: 0 0 20px rgba(255, 45, 85, 0.4);
}

/* Cards */
.cyber-card {
  background-color: var(--cyber-panel);
  border: 1px solid var(--cyber-border);
  border-radius: 6px;
  padding: 2rem;
  position: relative;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
  overflow: hidden;
}

.cyber-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--cyber-green), var(--cyber-cyan), var(--cyber-purple));
  opacity: 0;
  transition: opacity 0.3s ease;
}

.cyber-card:hover {
  border-color: var(--cyber-green);
  box-shadow: 0 8px 30px rgba(0, 255, 157, 0.12);
}

.cyber-card:hover::before {
  opacity: 1;
}

.cyber-card.static-card {
  cursor: default;
}

.cyber-card.static-card:hover {
  border-color: var(--cyber-border);
  box-shadow: none;
}

.cyber-card.static-card:hover::before {
  opacity: 0;
}

/* Grid layouts */
.tech-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.75rem;
}

/* Accordion */
.accordion-item {
  border: 1px solid var(--cyber-border);
  border-radius: 6px;
  margin-bottom: 0.75rem;
  overflow: hidden;
  background-color: var(--cyber-panel);
}

.accordion-header {
  cursor: pointer;
  padding: 1.1rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--cyber-text);
  font-weight: 600;
  transition: background-color 0.25s ease, color 0.25s ease;
}

.accordion-header:hover {
  background-color: var(--cyber-panel-light);
  color: var(--cyber-green);
}

.accordion-header .icon {
  transition: transform 0.3s ease;
  color: var(--cyber-green);
}

.accordion-header.active .icon {
  transform: rotate(180deg);
}

.accordion-content {
  display: none;
  padding: 0 1.5rem 1.25rem;
  color: var(--cyber-text-dim);
  border-top: 1px solid var(--cyber-border);
}

/* Forms */
.cyber-form input,
.cyber-form textarea,
.cyber-form select {
  background-color: var(--cyber-dark);
  border: 1px solid var(--cyber-border);
  color: var(--cyber-text);
  border-radius: 4px;
  padding: 0.85rem 1rem;
  width: 100%;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
  font-family: inherit;
}

.cyber-form input::placeholder,
.cyber-form textarea::placeholder {
  color: var(--cyber-text-dim);
}

.cyber-form input:focus,
.cyber-form textarea:focus,
.cyber-form select:focus {
  outline: none;
  border-color: var(--cyber-green);
  box-shadow: 0 0 0 3px rgba(0, 255, 157, 0.15);
}

.cyber-form label {
  color: var(--cyber-text-dim);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.4rem;
  display: block;
}

.cyber-form label .required {
  color: var(--cyber-red);
}

/* Cookie Banner */
.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 200;
  background-color: var(--cyber-dark);
  border-top: 1px solid var(--cyber-green);
  box-shadow: 0 -10px 40px rgba(0, 0, 0, 0.5);
}

.cookie-banner h3,
.cookie-banner p {
  color: var(--cyber-text);
}

.cookie-banner p {
  color: var(--cyber-text-dim);
}

.cookie-banner a {
  color: var(--cyber-cyan);
  text-decoration: underline;
}

.cookie-banner a:hover {
  color: #7ff0ff;
}

/* Loading Spinner */
.cyber-spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--cyber-border);
  border-top-color: var(--cyber-green);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Hero glow / animations */
.glow-text {
  text-shadow: 0 0 20px rgba(0, 255, 157, 0.5);
}

.terminal-cursor::after {
  content: '_';
  animation: blink 1s step-end infinite;
  color: var(--cyber-green);
}

@keyframes blink {
  50% { opacity: 0; }
}

.fade-in-up {
  animation: fadeInUp 0.6s ease both;
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.pulse-badge {
  animation: pulseBadge 2.2s ease-in-out infinite;
}

@keyframes pulseBadge {
  0%, 100% { box-shadow: 0 0 0 0 rgba(0, 255, 157, 0.4); }
  50% { box-shadow: 0 0 0 8px rgba(0, 255, 157, 0); }
}

/* Badges */
.badge-featured {
  background: linear-gradient(135deg, var(--cyber-purple), var(--cyber-cyan));
  color: #ffffff;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.3rem 0.9rem;
  border-radius: 999px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Section dividers */
.section-divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--cyber-green), transparent);
  border: none;
  margin: 3rem 0;
}

/* Stats */
.stat-number {
  font-family: var(--font-mono);
  color: var(--cyber-green);
  font-weight: 700;
  text-shadow: 0 0 15px rgba(0, 255, 157, 0.4);
}

/* Footer */
.site-footer {
  background-color: var(--cyber-dark);
  border-top: 1px solid var(--cyber-border);
  color: var(--cyber-text-dim);
}

.site-footer h3,
.site-footer h4 {
  color: var(--cyber-text);
}

.site-footer a {
  color: var(--cyber-text-dim);
  transition: color 0.25s ease;
}

.site-footer a:hover {
  color: var(--cyber-green);
}

/* Alert boxes */
.alert-box {
  border-left: 3px solid var(--cyber-amber);
  background-color: rgba(255, 184, 0, 0.08);
  color: var(--cyber-text);
  padding: 1rem 1.25rem;
  border-radius: 4px;
}

.alert-box-danger {
  border-left: 3px solid var(--cyber-red);
  background-color: rgba(255, 45, 85, 0.08);
  color: var(--cyber-text);
  padding: 1rem 1.25rem;
  border-radius: 4px;
}

/* Utility */
.text-cyber-green { color: var(--cyber-green); }
.text-cyber-cyan { color: var(--cyber-cyan); }
.text-cyber-purple { color: var(--cyber-purple); }
.bg-cyber-panel { background-color: var(--cyber-panel); }
.border-cyber { border-color: var(--cyber-border); }