@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 {
  --vertex-void: #0B0E1A;
  --vertex-deep: #151A2E;
  --vertex-surface: #1E2440;
  --vertex-primary: #6D28D9;
  --vertex-primary-light: #8B5CF6;
  --vertex-accent: #00E5C7;
  --vertex-accent-2: #FF3D9A;
  --vertex-warn: #FFB627;
  --vertex-text-light: #E8E9F3;
  --vertex-text-muted: #9CA3C4;
  --vertex-border: #2D3459;
  --gradient-primary: linear-gradient(135deg, #6D28D9 0%, #00E5C7 100%);
  --gradient-dark: linear-gradient(180deg, #0B0E1A 0%, #151A2E 100%);
  --gradient-accent: linear-gradient(90deg, #00E5C7 0%, #FF3D9A 100%);
  --shadow-glow: 0 0 30px rgba(109, 40, 217, 0.35);
  --shadow-accent-glow: 0 0 25px rgba(0, 229, 199, 0.3);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  color: var(--vertex-text-light);
  background-color: #0B0E1A;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 10px;
}
::-webkit-scrollbar-track {
  background: var(--vertex-void);
}
::-webkit-scrollbar-thumb {
  background: var(--gradient-primary);
  border-radius: 10px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--vertex-accent);
}

/* Sticky Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 999;
  background-color: #0B0E1A;
  border-bottom: 1px solid var(--vertex-border);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
  transition: all 0.3s ease;
}

.site-header .logo-text {
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.nav-link {
  position: relative;
  color: var(--vertex-text-muted);
  font-weight: 500;
  transition: color 0.25s ease;
}

.nav-link::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -6px;
  width: 0;
  height: 2px;
  background: var(--gradient-accent);
  transition: width 0.3s ease;
}

.nav-link:hover,
.nav-link.active {
  color: var(--vertex-accent);
}

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

/* Mobile Menu */
.mobile-menu {
  background-color: var(--vertex-deep);
  border-top: 1px solid var(--vertex-border);
}

.mobile-menu a {
  color: var(--vertex-text-light);
  border-bottom: 1px solid var(--vertex-border);
}

.mobile-menu a:hover {
  color: var(--vertex-accent);
  background-color: rgba(109, 40, 217, 0.1);
}

.mobile-menu-toggle {
  color: var(--vertex-text-light);
}

/* Buttons */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 2rem;
  background: var(--gradient-primary);
  color: #ffffff;
  font-weight: 600;
  border-radius: 0.5rem;
  box-shadow: var(--shadow-glow);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
  border: none;
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 40px rgba(109, 40, 217, 0.5);
}

.btn-accent {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 2rem;
  background: var(--vertex-accent);
  color: #0B0E1A;
  font-weight: 700;
  border-radius: 0.5rem;
  box-shadow: var(--shadow-accent-glow);
  transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.25s ease;
  border: none;
}

.btn-accent:hover {
  transform: translateY(-3px);
  background: #00FFDA;
  box-shadow: 0 10px 40px rgba(0, 229, 199, 0.5);
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.8rem 1.9rem;
  background: transparent;
  color: var(--vertex-accent);
  font-weight: 600;
  border-radius: 0.5rem;
  border: 2px solid var(--vertex-accent);
  transition: all 0.25s ease;
}

.btn-outline:hover {
  background: var(--vertex-accent);
  color: #0B0E1A;
}

/* Cards */
.vertex-card {
  background-color: var(--vertex-surface);
  border: 1px solid var(--vertex-border);
  border-radius: 0.75rem;
  padding: 2rem;
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.vertex-card:hover {
  transform: translateY(-6px);
  border-color: var(--vertex-primary-light);
  box-shadow: var(--shadow-glow);
}

.vertex-card-static {
  background-color: var(--vertex-surface);
  border: 1px solid var(--vertex-border);
  border-radius: 0.75rem;
  padding: 2rem;
  cursor: default;
}

.vertex-icon-box {
  width: 3.5rem;
  height: 3.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 0.6rem;
  background: var(--gradient-primary);
  color: #fff;
  font-size: 1.5rem;
}

/* Sections */
.section-dark {
  background: var(--gradient-dark);
}

.section-surface {
  background-color: var(--vertex-surface);
}

.hero-grid-bg {
  background-image:
    linear-gradient(rgba(109, 40, 217, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(109, 40, 217, 0.08) 1px, transparent 1px);
  background-size: 40px 40px;
}

/* Accordion */
.accordion-item {
  border: 1px solid var(--vertex-border);
  border-radius: 0.5rem;
  overflow: hidden;
  margin-bottom: 0.75rem;
  background-color: var(--vertex-surface);
}

.accordion-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.1rem 1.5rem;
  cursor: pointer;
  color: var(--vertex-text-light);
  font-weight: 600;
  transition: background-color 0.2s ease;
}

.accordion-header:hover {
  background-color: rgba(109, 40, 217, 0.15);
}

.accordion-header .ri-arrow-down-s-line {
  transition: transform 0.3s ease;
  color: var(--vertex-accent);
}

.accordion-header.active .ri-arrow-down-s-line {
  transform: rotate(180deg);
}

.accordion-content {
  display: none;
  padding: 0 1.5rem 1.25rem;
  color: var(--vertex-text-muted);
  line-height: 1.7;
}

/* Forms */
.vertex-form-input,
.vertex-form-textarea,
.vertex-form-select {
  width: 100%;
  background-color: var(--vertex-deep);
  border: 1.5px solid var(--vertex-border);
  color: var(--vertex-text-light);
  padding: 0.85rem 1.1rem;
  border-radius: 0.5rem;
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
}

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

.vertex-form-input:focus,
.vertex-form-textarea:focus,
.vertex-form-select:focus {
  outline: none;
  border-color: var(--vertex-accent);
  box-shadow: 0 0 0 3px rgba(0, 229, 199, 0.2);
}

.vertex-form-label {
  display: block;
  margin-bottom: 0.4rem;
  font-weight: 600;
  color: var(--vertex-text-light);
  font-size: 0.9rem;
}

/* Loading Spinner */
.vertex-spinner {
  width: 3rem;
  height: 3rem;
  border: 4px solid var(--vertex-border);
  border-top: 4px solid var(--vertex-accent);
  border-radius: 50%;
  animation: vertex-spin 0.8s linear infinite;
}

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

/* Fade-in Animation */
.fade-in-up {
  opacity: 0;
  transform: translateY(20px);
  animation: fadeInUp 0.7s ease forwards;
}

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

/* Cookie Banner */
.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background-color: var(--vertex-deep);
  border-top: 1px solid var(--vertex-border);
  box-shadow: 0 -10px 40px rgba(0, 0, 0, 0.5);
  padding: 1.25rem 1.5rem;
}

.cookie-banner h3 {
  color: #ffffff;
}

.cookie-banner p {
  color: var(--vertex-text-muted);
}

.cookie-banner a {
  color: #7DD3FC;
  text-decoration: underline;
}

.cookie-banner a:hover {
  color: var(--vertex-accent);
}

/* Badge */
.badge-popular {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  background: var(--gradient-accent);
  color: #0B0E1A;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.3rem 0.85rem;
  border-radius: 999px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

/* Divider */
.vertex-divider {
  height: 2px;
  background: var(--gradient-accent);
  width: 4rem;
  border-radius: 2px;
}

/* Stats */
.vertex-stat-number {
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  font-weight: 800;
}

/* Table */
.vertex-table th {
  background-color: var(--vertex-deep);
  color: var(--vertex-accent);
  text-align: left;
  padding: 0.9rem 1.25rem;
  font-weight: 600;
  border-bottom: 2px solid var(--vertex-border);
}

.vertex-table td {
  padding: 0.9rem 1.25rem;
  border-bottom: 1px solid var(--vertex-border);
  color: var(--vertex-text-muted);
}

.vertex-table tr:hover td {
  background-color: rgba(109, 40, 217, 0.08);
}

/* Timeline */
.vertex-timeline-item {
  position: relative;
  padding-left: 2.5rem;
  border-left: 2px solid var(--vertex-border);
  padding-bottom: 2.5rem;
}

.vertex-timeline-item::before {
  content: '';
  position: absolute;
  left: -0.55rem;
  top: 0;
  width: 1rem;
  height: 1rem;
  border-radius: 50%;
  background: var(--gradient-accent);
  box-shadow: 0 0 12px rgba(0, 229, 199, 0.6);
}

/* Utility */
.text-gradient-primary {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.text-gradient-accent {
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.border-glow {
  box-shadow: var(--shadow-glow);
}

@media (max-width: 768px) {
  .vertex-card,
  .vertex-card-static {
    padding: 1.5rem;
  }
}