@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 {
  --crovia-void: #0b0c1e;
  --crovia-deep: #14163a;
  --crovia-surface: #1c1f4a;
  --crovia-primary: #6c4cf1;
  --crovia-primary-dark: #4b2fc9;
  --crovia-secondary: #00e6c3;
  --crovia-accent: #ff4d94;
  --crovia-text-light: #eceaff;
  --crovia-text-muted: #a8a6d9;
  --crovia-border: rgba(108, 76, 241, 0.25);
  --crovia-glow: rgba(0, 230, 195, 0.35);
  --crovia-shadow: rgba(11, 12, 30, 0.6);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  background-color: #f7f7fc;
  color: #1a1a2e;
}

::-webkit-scrollbar {
  width: 10px;
}
::-webkit-scrollbar-track {
  background: var(--crovia-void);
}
::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, var(--crovia-primary), var(--crovia-secondary));
  border-radius: 10px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--crovia-accent);
}

/* HEADER */
.site-header {
  background-color: var(--crovia-void);
  border-bottom: 1px solid var(--crovia-border);
  position: sticky;
  top: 0;
  z-index: 999;
  box-shadow: 0 4px 20px var(--crovia-shadow);
  transition: all 0.3s ease;
}

.site-header .logo-text {
  color: var(--crovia-text-light);
  font-weight: 800;
  letter-spacing: 0.5px;
}

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

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 0;
  width: 0%;
  height: 2px;
  background: linear-gradient(90deg, var(--crovia-secondary), var(--crovia-primary));
  transition: width 0.3s ease;
}

.nav-link:hover {
  color: var(--crovia-text-light);
}

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

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

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

.mobile-menu {
  background-color: var(--crovia-deep);
  border-top: 1px solid var(--crovia-border);
}

.mobile-menu a {
  color: var(--crovia-text-muted);
  border-bottom: 1px solid rgba(255,255,255,0.05);
}

.mobile-menu a:hover {
  color: var(--crovia-secondary);
  background-color: rgba(108, 76, 241, 0.08);
}

/* BUTTONS */
.btn-primary {
  background: linear-gradient(135deg, var(--crovia-primary), var(--crovia-primary-dark));
  color: #ffffff;
  padding: 0.85rem 2rem;
  border-radius: 0.5rem;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  box-shadow: 0 8px 20px rgba(108, 76, 241, 0.35);
  transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.25s ease;
  border: none;
  cursor: pointer;
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 28px rgba(0, 230, 195, 0.4);
  background: linear-gradient(135deg, var(--crovia-secondary), var(--crovia-primary));
  color: #0b0c1e;
}

.btn-outline {
  background: transparent;
  border: 2px solid var(--crovia-secondary);
  color: var(--crovia-secondary);
  padding: 0.75rem 1.85rem;
  border-radius: 0.5rem;
  font-weight: 600;
  transition: all 0.25s ease;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.btn-outline:hover {
  background: var(--crovia-secondary);
  color: var(--crovia-void);
  box-shadow: 0 8px 20px var(--crovia-glow);
}

.btn-accent {
  background: var(--crovia-accent);
  color: #ffffff;
  padding: 0.85rem 2rem;
  border-radius: 999px;
  font-weight: 700;
  box-shadow: 0 8px 20px rgba(255, 77, 148, 0.35);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.btn-accent:hover {
  transform: scale(1.05);
  box-shadow: 0 12px 26px rgba(255, 77, 148, 0.5);
}

/* CARDS */
.tech-card {
  background: #ffffff;
  border: 1px solid #e5e5f5;
  border-radius: 1rem;
  padding: 2rem;
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
  position: relative;
  overflow: hidden;
}

.tech-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: linear-gradient(180deg, var(--crovia-primary), var(--crovia-secondary));
  opacity: 0;
  transition: opacity 0.3s ease;
}

.tech-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 32px rgba(108, 76, 241, 0.15);
  border-color: var(--crovia-primary);
}

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

.tech-card-dark {
  background: linear-gradient(160deg, var(--crovia-deep), var(--crovia-surface));
  border: 1px solid var(--crovia-border);
  border-radius: 1rem;
  padding: 2rem;
  color: var(--crovia-text-light);
}

.tech-card-dark h3, .tech-card-dark h2 {
  color: #ffffff;
}

.tech-card-dark p {
  color: var(--crovia-text-muted);
}

.icon-badge {
  width: 3.5rem;
  height: 3.5rem;
  border-radius: 0.85rem;
  background: linear-gradient(135deg, var(--crovia-primary), var(--crovia-secondary));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  font-size: 1.5rem;
  margin-bottom: 1rem;
  box-shadow: 0 6px 16px rgba(108, 76, 241, 0.3);
}

/* ACCORDION */
.accordion-header {
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.25rem 1.5rem;
  background: #ffffff;
  border: 1px solid #e5e5f5;
  border-radius: 0.75rem;
  font-weight: 600;
  color: #1a1a2e;
  transition: all 0.25s ease;
}

.accordion-header:hover {
  border-color: var(--crovia-primary);
}

.accordion-header.active {
  background: linear-gradient(135deg, var(--crovia-primary), var(--crovia-primary-dark));
  color: #ffffff;
  border-color: transparent;
}

.accordion-header i {
  transition: transform 0.3s ease;
}

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

.accordion-content {
  display: none;
  padding: 1.25rem 1.5rem;
  background: #f7f7fc;
  border-left: 3px solid var(--crovia-secondary);
  border-radius: 0 0 0.75rem 0.75rem;
  color: #333356;
}

/* FORMS */
.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: 0.85rem 1.1rem;
  border: 1.5px solid #dcdcf0;
  border-radius: 0.6rem;
  background: #ffffff;
  color: #1a1a2e;
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
  font-size: 0.95rem;
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--crovia-primary);
  box-shadow: 0 0 0 4px rgba(108, 76, 241, 0.15);
}

.form-label {
  font-weight: 600;
  color: #1a1a2e;
  margin-bottom: 0.4rem;
  display: block;
  font-size: 0.9rem;
}

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

.form-input::placeholder,
.form-textarea::placeholder {
  color: #9d9dc0;
}

/* COOKIE BANNER */
.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--crovia-void);
  border-top: 1px solid var(--crovia-border);
  padding: 1.25rem 1.5rem;
  z-index: 1000;
  box-shadow: 0 -8px 24px var(--crovia-shadow);
}

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

.cookie-banner p {
  color: #c9c8e8;
}

.cookie-banner a {
  color: #7fd6ff;
  text-decoration: underline;
}

.cookie-btn-accept {
  background: linear-gradient(135deg, var(--crovia-secondary), var(--crovia-primary));
  color: #0b0c1e;
  font-weight: 700;
  padding: 0.65rem 1.5rem;
  border-radius: 0.5rem;
  transition: transform 0.2s ease;
}

.cookie-btn-accept:hover {
  transform: translateY(-2px);
}

.cookie-btn-decline {
  background: transparent;
  border: 1.5px solid #6c6c9a;
  color: #c9c8e8;
  padding: 0.65rem 1.5rem;
  border-radius: 0.5rem;
  transition: all 0.2s ease;
}

.cookie-btn-decline:hover {
  border-color: #ffffff;
  color: #ffffff;
}

/* HERO / GRADIENTS */
.hero-gradient {
  background: radial-gradient(circle at 20% 20%, rgba(108, 76, 241, 0.35), transparent 40%),
              radial-gradient(circle at 80% 60%, rgba(0, 230, 195, 0.25), transparent 45%),
              var(--crovia-void);
}

.grid-overlay {
  background-image: linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
                     linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 40px 40px;
}

.glow-text {
  text-shadow: 0 0 20px rgba(0, 230, 195, 0.5);
}

/* SPINNER */
.loader-spin {
  width: 3rem;
  height: 3rem;
  border: 4px solid rgba(108, 76, 241, 0.2);
  border-top-color: var(--crovia-primary);
  border-radius: 50%;
  animation: crovia-spin 0.9s linear infinite;
}

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

/* FADE / SLIDE ANIMATIONS */
.fade-in-up {
  animation: crovia-fade-up 0.6s ease forwards;
}

@keyframes crovia-fade-up {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.pulse-dot {
  animation: crovia-pulse 2s ease-in-out infinite;
}

@keyframes crovia-pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(1.15); }
}

/* SECTION DIVIDERS */
.section-alt {
  background-color: #eeeef9;
}

.section-dark {
  background-color: var(--crovia-void);
  color: var(--crovia-text-light);
}

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

.section-dark p {
  color: var(--crovia-text-muted);
}

/* BADGE */
.badge-popular {
  background: linear-gradient(135deg, var(--crovia-accent), var(--crovia-primary));
  color: #ffffff;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.35rem 0.9rem;
  border-radius: 999px;
  display: inline-block;
  letter-spacing: 0.5px;
}

/* FOOTER */
.site-footer {
  background-color: var(--crovia-deep);
  color: var(--crovia-text-muted);
  border-top: 1px solid var(--crovia-border);
}

.site-footer h3, .site-footer h4 {
  color: #ffffff;
}

.site-footer a {
  color: var(--crovia-text-muted);
  transition: color 0.2s ease;
}

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

.footer-social-icon {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 50%;
  background: rgba(108, 76, 241, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--crovia-text-light);
  transition: all 0.25s ease;
}

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

@media (max-width: 768px) {
  .tech-card, .tech-card-dark {
    padding: 1.5rem;
  }
  .btn-primary, .btn-outline, .btn-accent {
    width: 100%;
    justify-content: center;
  }
}