@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 {
  --vektor-void: #0B0B14;
  --vektor-deep: #14142B;
  --vektor-indigo: #6C2BD9;
  --vektor-indigo-light: #9B6BFF;
  --vektor-lime: #C6FF00;
  --vektor-cyan: #00E5FF;
  --vektor-magenta: #FF2E92;
  --vektor-gray-100: #F4F3FB;
  --vektor-gray-300: #C9C6E0;
  --vektor-gray-600: #6B6890;
  --vektor-border: #2A2A45;
  --shadow-glow: 0 0 24px rgba(108, 43, 217, 0.35);
  --shadow-lime: 0 0 20px rgba(198, 255, 0, 0.35);
  --transition-base: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
  scroll-behavior: smooth;
}

body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  background-color: #ffffff;
  color: var(--vektor-gray-600);
}

/* ===== Custom Scrollbar ===== */
::-webkit-scrollbar {
  width: 10px;
}
::-webkit-scrollbar-track {
  background: var(--vektor-void);
}
::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, var(--vektor-indigo), var(--vektor-cyan));
  border-radius: 10px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--vektor-lime);
}

/* ===== Sticky Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 999;
  background-color: var(--vektor-void);
  border-bottom: 1px solid var(--vektor-border);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.25);
  transition: var(--transition-base);
}

.site-header .logo-mark {
  filter: drop-shadow(0 0 6px rgba(108, 43, 217, 0.6));
}

.nav-link {
  position: relative;
  color: var(--vektor-gray-300);
  font-weight: 500;
  transition: var(--transition-base);
}

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

.nav-link:hover {
  color: #ffffff;
}

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

.nav-link.active {
  color: var(--vektor-lime);
}

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

.mobile-menu-toggle {
  color: var(--vektor-gray-100);
  font-size: 1.75rem;
  cursor: pointer;
  transition: var(--transition-base);
}

.mobile-menu-toggle:hover {
  color: var(--vektor-lime);
}

.mobile-menu a {
  color: var(--vektor-gray-300);
  border-bottom: 1px solid var(--vektor-border);
  transition: var(--transition-base);
}

.mobile-menu a:hover {
  color: var(--vektor-lime);
  padding-left: 8px;
}

/* ===== Buttons ===== */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  background: linear-gradient(135deg, var(--vektor-indigo), var(--vektor-indigo-light));
  color: #ffffff;
  font-weight: 600;
  padding: 0.85rem 2rem;
  border-radius: 0.5rem;
  box-shadow: var(--shadow-glow);
  transition: var(--transition-base);
  border: none;
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 0 32px rgba(108, 43, 217, 0.55);
}

.btn-accent {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  background: var(--vektor-lime);
  color: var(--vektor-void);
  font-weight: 700;
  padding: 0.85rem 2rem;
  border-radius: 0.5rem;
  box-shadow: var(--shadow-lime);
  transition: var(--transition-base);
  border: none;
}

.btn-accent:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 0 30px rgba(198, 255, 0, 0.55);
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  background: transparent;
  color: var(--vektor-indigo-light);
  font-weight: 600;
  padding: 0.8rem 2rem;
  border-radius: 0.5rem;
  border: 2px solid var(--vektor-indigo-light);
  transition: var(--transition-base);
}

.btn-outline:hover {
  background: var(--vektor-indigo-light);
  color: #ffffff;
}

/* ===== Cards ===== */
.vektor-card {
  background: #ffffff;
  border: 1px solid #E7E5F5;
  border-radius: 0.75rem;
  padding: 2rem;
  transition: var(--transition-base);
  position: relative;
  overflow: hidden;
}

.vektor-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: linear-gradient(180deg, var(--vektor-indigo), var(--vektor-cyan));
  transform: scaleY(0);
  transform-origin: top;
  transition: transform 0.35s ease;
}

.vektor-card:hover {
  box-shadow: 0 10px 40px rgba(108, 43, 217, 0.15);
  transform: translateY(-6px);
}

.vektor-card:hover::before {
  transform: scaleY(1);
}

.vektor-card-dark {
  background: var(--vektor-deep);
  border: 1px solid var(--vektor-border);
  border-radius: 0.75rem;
  padding: 2rem;
  color: var(--vektor-gray-300);
  transition: var(--transition-base);
}

.vektor-card-dark h3,
.vektor-card-dark h4 {
  color: #ffffff;
}

.vektor-card-dark:hover {
  border-color: var(--vektor-indigo-light);
  box-shadow: var(--shadow-glow);
}

/* ===== Section Backgrounds ===== */
.section-dark {
  background: var(--vektor-void);
  color: var(--vektor-gray-300);
  position: relative;
}

.section-dark h1,
.section-dark h2,
.section-dark h3 {
  color: #ffffff;
}

.section-grid-bg {
  background-image:
    linear-gradient(rgba(108, 43, 217, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(108, 43, 217, 0.08) 1px, transparent 1px);
  background-size: 40px 40px;
}

.gradient-text {
  background: linear-gradient(90deg, var(--vektor-indigo-light), var(--vektor-cyan));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ===== Forms ===== */
.form-control {
  width: 100%;
  padding: 0.9rem 1.1rem;
  background: #F8F7FD;
  border: 1.5px solid #E1DEF2;
  border-radius: 0.5rem;
  color: #1A1830;
  transition: var(--transition-base);
}

.form-control:focus {
  outline: none;
  border-color: var(--vektor-indigo);
  background: #ffffff;
  box-shadow: 0 0 0 3px rgba(108, 43, 217, 0.15);
}

.form-control::placeholder {
  color: var(--vektor-gray-600);
}

label.form-label {
  color: #1A1830;
  font-weight: 600;
  margin-bottom: 0.4rem;
  display: block;
  font-size: 0.9rem;
}

.form-dark .form-control {
  background: var(--vektor-deep);
  border: 1.5px solid var(--vektor-border);
  color: #ffffff;
}

.form-dark .form-control:focus {
  border-color: var(--vektor-lime);
  box-shadow: 0 0 0 3px rgba(198, 255, 0, 0.15);
}

.form-dark label.form-label {
  color: var(--vektor-gray-300);
}

/* ===== Accordion ===== */
.accordion-item {
  border: 1px solid #E7E5F5;
  border-radius: 0.5rem;
  overflow: hidden;
  margin-bottom: 0.75rem;
  transition: var(--transition-base);
}

.accordion-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.1rem 1.5rem;
  cursor: pointer;
  background: #ffffff;
  color: #1A1830;
  font-weight: 600;
  transition: var(--transition-base);
}

.accordion-header:hover {
  background: #F8F7FD;
}

.accordion-header.active {
  color: var(--vektor-indigo);
}

.accordion-header i {
  transition: transform 0.3s ease;
  color: var(--vektor-indigo);
}

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

.accordion-content {
  display: none;
  padding: 0 1.5rem 1.25rem;
  color: var(--vektor-gray-600);
  background: #ffffff;
}

/* ===== Cookie Banner ===== */
.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: var(--vektor-void);
  border-top: 1px solid var(--vektor-border);
  padding: 1.25rem 1.5rem;
  box-shadow: 0 -8px 30px rgba(0, 0, 0, 0.3);
}

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

.cookie-banner p {
  color: var(--vektor-gray-300);
}

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

.cookie-banner a:hover {
  color: var(--vektor-lime);
}

/* ===== Loading Spinner ===== */
.vektor-spinner {
  width: 44px;
  height: 44px;
  border: 4px solid rgba(108, 43, 217, 0.15);
  border-top-color: var(--vektor-indigo);
  border-radius: 50%;
  animation: vektor-spin 0.9s linear infinite;
}

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

/* ===== Animations ===== */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}

.animate-fade-up {
  animation: fadeInUp 0.7s ease forwards;
}

@keyframes floatSlow {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-14px); }
}

.animate-float {
  animation: floatSlow 5s ease-in-out infinite;
}

@keyframes pulseGlow {
  0%, 100% { box-shadow: 0 0 20px rgba(198, 255, 0, 0.3); }
  50% { box-shadow: 0 0 34px rgba(198, 255, 0, 0.55); }
}

.animate-pulse-glow {
  animation: pulseGlow 2.5s ease-in-out infinite;
}

/* ===== Badges ===== */
.badge-popular {
  background: linear-gradient(135deg, var(--vektor-lime), #A6D900);
  color: var(--vektor-void);
  font-weight: 700;
  font-size: 0.75rem;
  padding: 0.3rem 0.9rem;
  border-radius: 999px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.badge-tech {
  background: rgba(108, 43, 217, 0.1);
  color: var(--vektor-indigo);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.25rem 0.75rem;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

/* ===== Divider ===== */
.vektor-divider {
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--vektor-indigo), var(--vektor-cyan), transparent);
  border: none;
}

/* ===== Stat blocks ===== */
.stat-block {
  text-align: center;
  padding: 1.5rem;
}

.stat-block .stat-number {
  font-size: 2.5rem;
  font-weight: 800;
  background: linear-gradient(90deg, var(--vektor-indigo-light), var(--vektor-cyan));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.stat-block .stat-label {
  color: var(--vektor-gray-600);
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ===== Utility overrides ===== */
.shadow-vektor {
  box-shadow: 0 10px 40px rgba(11, 11, 20, 0.08);
}

.border-vektor {
  border-color: var(--vektor-border);
}

@media (max-width: 768px) {
  .stat-block .stat-number {
    font-size: 2rem;
  }
  .vektor-card, .vektor-card-dark {
    padding: 1.5rem;
  }
}