@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 {
  --av-void: #0b0e1a;
  --av-deep: #121736;
  --av-indigo: #4338ca;
  --av-violet: #7c3aed;
  --av-electric: #6d28d9;
  --av-cyber: #ccff00;
  --av-cyber-dim: #a8d400;
  --av-cyan: #22d3ee;
  --av-slate: #94a3b8;
  --av-mist: #e2e8f0;
  --av-card: #161b3d;
  --av-border: #2a2f5c;
  --av-gradient: linear-gradient(135deg, var(--av-indigo) 0%, var(--av-violet) 50%, var(--av-electric) 100%);
  --av-gradient-glow: linear-gradient(135deg, #6d28d9 0%, #4338ca 100%);
  --av-shadow: 0 10px 30px -10px rgba(76, 29, 149, 0.4);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  background-color: #ffffff;
  color: #1e2033;
}

::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}
::-webkit-scrollbar-track {
  background: var(--av-void);
}
::-webkit-scrollbar-thumb {
  background: var(--av-gradient);
  border-radius: 10px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--av-cyber);
}

/* HEADER */
.site-header {
  background-color: var(--av-void);
  border-bottom: 1px solid var(--av-border);
  position: sticky;
  top: 0;
  z-index: 999;
  box-shadow: 0 4px 20px rgba(0,0,0,0.35);
}

.logo-glow {
  filter: drop-shadow(0 0 8px rgba(124, 58, 237, 0.6));
  transition: filter 0.3s ease;
}
.logo-glow:hover {
  filter: drop-shadow(0 0 14px rgba(204, 255, 0, 0.5));
}

.nav-link {
  position: relative;
  color: #cbd5e1;
  font-weight: 500;
  transition: color 0.25s ease;
}
.nav-link::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -6px;
  width: 0%;
  height: 2px;
  background: var(--av-cyber);
  transition: width 0.3s ease;
}
.nav-link:hover {
  color: #ffffff;
}
.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}
.nav-link.active {
  color: #ffffff;
}

/* MOBILE MENU */
.mobile-menu {
  background-color: var(--av-void);
  border-top: 1px solid var(--av-border);
}
.mobile-menu a {
  color: #e2e8f0;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.mobile-menu a:hover {
  color: var(--av-cyber);
  background-color: rgba(124, 58, 237, 0.08);
}
.mobile-menu-toggle {
  color: #ffffff;
}

/* BUTTONS */
.btn-primary {
  background: var(--av-gradient);
  color: #ffffff;
  font-weight: 600;
  padding: 0.85rem 2rem;
  border-radius: 8px;
  display: inline-block;
  box-shadow: var(--av-shadow);
  transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.3s ease;
  border: none;
  cursor: pointer;
}
.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 15px 35px -10px rgba(124, 58, 237, 0.6);
}
.btn-primary:active {
  transform: translateY(0);
}

.btn-accent {
  background-color: var(--av-cyber);
  color: #10121f;
  font-weight: 700;
  padding: 0.85rem 2rem;
  border-radius: 8px;
  display: inline-block;
  transition: all 0.25s ease;
  border: none;
  cursor: pointer;
  box-shadow: 0 8px 20px -6px rgba(204, 255, 0, 0.4);
}
.btn-accent:hover {
  background-color: var(--av-cyber-dim);
  transform: translateY(-3px);
}

.btn-outline {
  background: transparent;
  color: #ffffff;
  border: 2px solid var(--av-border);
  font-weight: 600;
  padding: 0.8rem 1.9rem;
  border-radius: 8px;
  display: inline-block;
  transition: all 0.25s ease;
  cursor: pointer;
}
.btn-outline:hover {
  border-color: var(--av-cyber);
  color: var(--av-cyber);
  background-color: rgba(204, 255, 0, 0.06);
}

.btn-dark-outline {
  background: transparent;
  color: #1e2033;
  border: 2px solid #cbd5e1;
  font-weight: 600;
  padding: 0.8rem 1.9rem;
  border-radius: 8px;
  display: inline-block;
  transition: all 0.25s ease;
  cursor: pointer;
}
.btn-dark-outline:hover {
  border-color: var(--av-electric);
  color: var(--av-electric);
  background-color: #f5f3ff;
}

/* CARDS */
.tech-card {
  background-color: #ffffff;
  border: 1px solid #e5e7eb;
  border-radius: 14px;
  padding: 2rem;
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}
.tech-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 40px -15px rgba(76, 29, 149, 0.25);
  border-color: var(--av-violet);
}

.tech-card-dark {
  background-color: var(--av-card);
  border: 1px solid var(--av-border);
  border-radius: 14px;
  padding: 2rem;
  color: #e2e8f0;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.tech-card-dark:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 45px -15px rgba(124, 58, 237, 0.5);
}

.icon-badge {
  width: 56px;
  height: 56px;
  border-radius: 12px;
  background: var(--av-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  font-size: 1.5rem;
  box-shadow: 0 8px 20px -6px rgba(76, 29, 149, 0.5);
}

/* GRID SECTIONS */
.grid-lines-bg {
  background-image:
    linear-gradient(rgba(124, 58, 237, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(124, 58, 237, 0.06) 1px, transparent 1px);
  background-size: 40px 40px;
}

.hero-dark {
  background: radial-gradient(circle at 20% 20%, rgba(124, 58, 237, 0.35), transparent 45%),
              radial-gradient(circle at 80% 60%, rgba(34, 211, 238, 0.18), transparent 40%),
              var(--av-void);
}

/* ACCORDION */
.accordion-item {
  border: 1px solid #e5e7eb;
  border-radius: 10px;
  overflow: hidden;
  margin-bottom: 0.9rem;
  transition: border-color 0.25s ease;
}
.accordion-header {
  cursor: pointer;
  padding: 1.1rem 1.4rem;
  background-color: #f8f7ff;
  font-weight: 600;
  color: #1e2033;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background-color 0.25s ease;
}
.accordion-header:hover {
  background-color: #eeeafd;
}
.accordion-header.active {
  background: var(--av-gradient);
  color: #ffffff;
}
.accordion-content {
  padding: 1.1rem 1.4rem;
  background-color: #ffffff;
  color: #374151;
  display: none;
}
.accordion-header i.accordion-icon {
  transition: transform 0.3s ease;
}
.accordion-header.active i.accordion-icon {
  transform: rotate(180deg);
}

/* FORMS */
.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: 0.85rem 1.1rem;
  border: 2px solid #e2e8f0;
  border-radius: 10px;
  background-color: #fafaff;
  color: #1e2033;
  transition: border-color 0.25s ease, box-shadow 0.25s ease, background-color 0.25s ease;
}
.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--av-violet);
  box-shadow: 0 0 0 4px rgba(124, 58, 237, 0.15);
  background-color: #ffffff;
}
.form-label {
  font-weight: 600;
  color: #1e2033;
  margin-bottom: 0.4rem;
  display: block;
  font-size: 0.9rem;
}
.form-group {
  margin-bottom: 1.4rem;
  position: relative;
}
.form-input::placeholder,
.form-textarea::placeholder {
  color: #94a3b8;
}

/* COOKIE BANNER */
.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background-color: var(--av-void);
  border-top: 2px solid var(--av-violet);
  color: #e2e8f0;
  z-index: 1000;
  box-shadow: 0 -10px 30px rgba(0,0,0,0.4);
}
.cookie-banner h3,
.cookie-banner strong {
  color: #ffffff;
}
.cookie-banner p,
.cookie-banner span {
  color: #cbd5e1;
}
.cookie-banner a {
  color: var(--av-cyber);
  text-decoration: underline;
}
.cookie-banner a:hover {
  color: #ffffff;
}

/* LOADING SPINNER */
.spinner {
  width: 44px;
  height: 44px;
  border: 4px solid rgba(124, 58, 237, 0.2);
  border-top-color: var(--av-violet);
  border-radius: 50%;
  animation: av-spin 0.8s linear infinite;
}
@keyframes av-spin {
  to { transform: rotate(360deg); }
}

/* FADE / SLIDE ANIMATIONS */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}
.fade-in-up {
  animation: fadeInUp 0.7s ease forwards;
}

@keyframes pulseGlow {
  0%, 100% { box-shadow: 0 0 0 0 rgba(204, 255, 0, 0.4); }
  50% { box-shadow: 0 0 0 10px rgba(204, 255, 0, 0); }
}
.pulse-glow {
  animation: pulseGlow 2.2s infinite;
}

/* SECTION DIVIDERS */
.section-divider {
  height: 3px;
  width: 80px;
  background: var(--av-gradient);
  border-radius: 4px;
}

.badge-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background-color: rgba(204, 255, 0, 0.12);
  color: var(--av-cyber-dim);
  border: 1px solid rgba(204, 255, 0, 0.35);
  padding: 0.3rem 0.9rem;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 600;
}

.badge-tag-violet {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background-color: rgba(124, 58, 237, 0.1);
  color: var(--av-violet);
  border: 1px solid rgba(124, 58, 237, 0.3);
  padding: 0.3rem 0.9rem;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 600;
}

/* FOOTER */
.site-footer {
  background-color: var(--av-void);
  color: #cbd5e1;
  border-top: 1px solid var(--av-border);
}
.site-footer h3,
.site-footer h4 {
  color: #ffffff;
}
.site-footer a {
  color: #94a3b8;
  transition: color 0.25s ease;
}
.site-footer a:hover {
  color: var(--av-cyber);
}

/* MISC HOVER LINK */
.link-underline {
  position: relative;
  color: var(--av-violet);
  font-weight: 600;
}
.link-underline::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 100%;
  height: 2px;
  background-color: var(--av-violet);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
}
.link-underline:hover::after {
  transform: scaleX(1);
}

/* STAT NUMBER */
.stat-number {
  font-size: 2.75rem;
  font-weight: 800;
  background: var(--av-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* TIMELINE */
.timeline-item {
  border-left: 3px solid var(--av-border);
  padding-left: 1.6rem;
  position: relative;
  padding-bottom: 2rem;
}
.timeline-item::before {
  content: '';
  position: absolute;
  left: -9px;
  top: 0;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--av-cyber);
  box-shadow: 0 0 0 4px rgba(204, 255, 0, 0.2);
}

@media (max-width: 768px) {
  .stat-number {
    font-size: 2.1rem;
  }
  .tech-card, .tech-card-dark {
    padding: 1.4rem;
  }
}