@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 {
  --viresta-void: #0B0D17;
  --viresta-deep: #14172B;
  --viresta-primary: #7C3AED;
  --viresta-primary-light: #A78BFA;
  --viresta-secondary: #06D6A0;
  --viresta-accent: #FF3D71;
  --viresta-accent-alt: #FFB800;
  --viresta-glow: #C4B5FD;
  --viresta-text-light: #E8E6F5;
  --viresta-text-muted: #9C99B5;
  --viresta-border: #2A2D45;
  --gradient-main: linear-gradient(135deg, #7C3AED 0%, #06D6A0 100%);
  --gradient-dark: linear-gradient(180deg, #0B0D17 0%, #14172B 100%);
  --gradient-glow: linear-gradient(135deg, rgba(124,58,237,0.35), rgba(6,214,160,0.25));
  --shadow-glow: 0 0 40px rgba(124,58,237,0.35);
  --shadow-card: 0 10px 30px rgba(11,13,23,0.5);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  background-color: #0B0D17;
  color: var(--viresta-text-light);
}

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

/* Sticky Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: #0B0D17;
  border-bottom: 1px solid var(--viresta-border);
  box-shadow: 0 4px 20px rgba(0,0,0,0.4);
  transition: all 0.3s ease;
}

.site-header .logo-glow {
  filter: drop-shadow(0 0 8px rgba(124,58,237,0.6));
}

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

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

.nav-link:hover {
  color: var(--viresta-primary-light);
}

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

.nav-link.active {
  color: var(--viresta-secondary);
}

.nav-link.active::after {
  width: 100%;
  background: var(--viresta-secondary);
}

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

.mobile-menu-toggle {
  color: var(--viresta-text-light);
  font-size: 1.75rem;
  cursor: pointer;
}

/* Buttons */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  background: var(--gradient-main);
  color: #ffffff;
  font-weight: 600;
  padding: 0.85rem 2rem;
  border-radius: 0.75rem;
  border: none;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 4px 15px rgba(124,58,237,0.4);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 30px rgba(124,58,237,0.55), 0 0 20px rgba(6,214,160,0.3);
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  background: transparent;
  color: var(--viresta-primary-light);
  font-weight: 600;
  padding: 0.8rem 1.9rem;
  border-radius: 0.75rem;
  border: 2px solid var(--viresta-primary);
  cursor: pointer;
  transition: all 0.3s ease;
}

.btn-outline:hover {
  background: var(--viresta-primary);
  color: #ffffff;
  box-shadow: var(--shadow-glow);
}

.btn-accent {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  background: var(--viresta-accent);
  color: #ffffff;
  font-weight: 600;
  padding: 0.85rem 2rem;
  border-radius: 0.75rem;
  border: none;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 4px 15px rgba(255,61,113,0.4);
}

.btn-accent:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 10px 25px rgba(255,61,113,0.6);
}

/* Cards */
.tech-card {
  background: var(--viresta-deep);
  border: 1px solid var(--viresta-border);
  border-radius: 1rem;
  padding: 2rem;
  transition: all 0.35s ease;
  position: relative;
  overflow: hidden;
}

.tech-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--gradient-main);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}

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

.tech-card:hover::before {
  transform: scaleX(1);
}

.tech-card-icon {
  width: 3.5rem;
  height: 3.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 0.9rem;
  background: var(--gradient-glow);
  color: var(--viresta-glow);
  font-size: 1.6rem;
  margin-bottom: 1.25rem;
}

.card-static {
  background: var(--viresta-deep);
  border: 1px solid var(--viresta-border);
  border-radius: 1rem;
  padding: 2rem;
  cursor: default;
}

.card-static.featured {
  border: 2px solid var(--viresta-secondary);
  box-shadow: 0 0 30px rgba(6,214,160,0.25);
}

.badge-popular {
  display: inline-block;
  background: var(--viresta-secondary);
  color: #0B0D17;
  font-weight: 700;
  font-size: 0.75rem;
  padding: 0.3rem 0.9rem;
  border-radius: 999px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

/* Forms */
.form-input,
.form-textarea,
.form-select {
  width: 100%;
  background-color: var(--viresta-deep);
  border: 1px solid var(--viresta-border);
  color: var(--viresta-text-light);
  padding: 0.85rem 1.1rem;
  border-radius: 0.65rem;
  transition: all 0.3s ease;
}

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

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--viresta-primary);
  box-shadow: 0 0 0 3px rgba(124,58,237,0.25);
}

.form-label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 600;
  color: var(--viresta-text-light);
  font-size: 0.9rem;
}

.form-group {
  margin-bottom: 1.5rem;
  position: relative;
}

.form-success {
  background: rgba(6,214,160,0.12);
  border: 1px solid var(--viresta-secondary);
  color: var(--viresta-secondary);
  padding: 1rem;
  border-radius: 0.65rem;
}

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

.accordion-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.25rem 1.5rem;
  cursor: pointer;
  font-weight: 600;
  color: var(--viresta-text-light);
  transition: background 0.25s ease;
}

.accordion-header:hover {
  background: rgba(124,58,237,0.08);
}

.accordion-header .accordion-icon {
  transition: transform 0.3s ease;
  color: var(--viresta-primary-light);
}

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

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

/* Cookie Banner */
.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 200;
  background: var(--viresta-deep);
  border-top: 2px solid var(--viresta-primary);
  padding: 1.25rem;
  box-shadow: 0 -10px 30px rgba(0,0,0,0.5);
}

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

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

.cookie-banner a {
  color: var(--viresta-primary-light);
  text-decoration: underline;
}

.cookie-banner a:hover {
  color: var(--viresta-secondary);
}

/* Hero / Glow Effects */
.hero-glow {
  position: relative;
  overflow: hidden;
}

.hero-glow::before {
  content: '';
  position: absolute;
  top: -20%;
  left: -10%;
  width: 60%;
  height: 60%;
  background: radial-gradient(circle, rgba(124,58,237,0.35), transparent 70%);
  filter: blur(60px);
  pointer-events: none;
}

.hero-glow::after {
  content: '';
  position: absolute;
  bottom: -20%;
  right: -10%;
  width: 60%;
  height: 60%;
  background: radial-gradient(circle, rgba(6,214,160,0.3), transparent 70%);
  filter: blur(60px);
  pointer-events: none;
}

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

.section-dark {
  background: var(--viresta-void);
}

.section-alt {
  background: var(--viresta-deep);
}

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

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

/* Fade In Animation */
.fade-in-up {
  opacity: 0;
  transform: translateY(20px);
  animation: fadeInUp 0.6s ease forwards;
}

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

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

/* Divider */
.divider-glow {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--viresta-primary), transparent);
  margin: 3rem 0;
}

/* Footer */
.site-footer {
  background: var(--viresta-void);
  border-top: 1px solid var(--viresta-border);
  color: var(--viresta-text-muted);
}

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

.site-footer a:hover {
  color: var(--viresta-secondary);
}

.footer-heading {
  color: #ffffff;
  font-weight: 700;
}

.social-icon {
  width: 2.5rem;
  height: 2.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--viresta-deep);
  color: var(--viresta-primary-light);
  border: 1px solid var(--viresta-border);
  transition: all 0.3s ease;
}

.social-icon:hover {
  background: var(--gradient-main);
  color: #ffffff;
  transform: translateY(-3px);
}

/* Responsive tweaks */
@media (max-width: 768px) {
  .stat-number {
    font-size: 2rem;
  }
  .tech-card {
    padding: 1.5rem;
  }
}