/* IVQA Premium Design System - Professional & Sophisticated */

:root {
  /* Colors - Professional Palette */
  --premium-primary: #0a1628;
  --premium-secondary: #1e3a5f;
  --premium-accent: #2b4dff;
  --premium-accent-light: #00c2ff;
  --premium-success: #10b981;
  --premium-warning: #f59e0b;
  --premium-error: #ef4444;
  
  /* Text Colors */
  --premium-text-primary: #0a1628;
  --premium-text-secondary: #64748b;
  --premium-text-muted: #94a3b8;
  --premium-text-light: #cbd5e1;
  
  /* Surface Colors */
  --premium-bg: #ffffff;
  --premium-bg-subtle: #f8fafc;
  --premium-bg-darker: #f1f5f9;
  
  /* Borders */
  --premium-border: #e2e8f0;
  --premium-border-subtle: #f1f5f9;
  
  /* Shadows */
  --premium-shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --premium-shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
  --premium-shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
  --premium-shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.12);
  --premium-shadow-2xl: 0 25px 50px rgba(0, 0, 0, 0.15);
  
  /* Spacing System */
  --premium-space-0: 0;
  --premium-space-1: 0.25rem;
  --premium-space-2: 0.5rem;
  --premium-space-3: 0.75rem;
  --premium-space-4: 1rem;
  --premium-space-6: 1.5rem;
  --premium-space-8: 2rem;
  --premium-space-10: 2.5rem;
  --premium-space-12: 3rem;
  --premium-space-16: 4rem;
  --premium-space-20: 5rem;
  --premium-space-24: 6rem;
  
  /* Border Radius */
  --premium-radius-sm: 6px;
  --premium-radius-md: 10px;
  --premium-radius-lg: 14px;
  --premium-radius-xl: 18px;
  --premium-radius-2xl: 24px;
  
  /* Typography */
  --premium-font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  --premium-font-heading: 'Outfit', system-ui, sans-serif;
  --premium-font-mono: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, 'Courier New', monospace;
}

/* ===== PREMIUM BUTTONS ===== */

.btn-premium,
.tv-btn-primary,
.tv-btn-outline {
  font-family: var(--premium-font-sans);
  font-weight: 600;
  letter-spacing: -0.01em;
  padding: var(--premium-space-4) var(--premium-space-8);
  border-radius: var(--premium-radius-lg);
  border: none;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  display: inline-flex;
  align-items: center;
  gap: var(--premium-space-2);
  text-decoration: none;
  position: relative;
  overflow: hidden;
}

/* Primary Button */
.btn-premium.btn-primary,
.tv-btn-primary {
  background: linear-gradient(135deg, var(--premium-accent) 0%, #1d3ddf 100%);
  color: white;
  box-shadow: 0 4px 12px rgba(43, 77, 255, 0.3);
}

.btn-premium.btn-primary:hover,
.tv-btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(43, 77, 255, 0.4);
  background: linear-gradient(135deg, #1d3ddf 0%, var(--premium-accent) 100%);
}

.btn-premium.btn-primary:active,
.tv-btn-primary:active {
  transform: translateY(0);
}

/* Secondary Button */
.btn-premium.btn-secondary {
  background: var(--premium-bg-darker);
  color: var(--premium-text-primary);
  border: 1px solid var(--premium-border);
}

.btn-premium.btn-secondary:hover {
  background: var(--premium-border);
  border-color: var(--premium-text-primary);
}

/* Outline Button */
.btn-premium.btn-outline,
.tv-btn-outline {
  background: transparent;
  border: 2px solid var(--premium-accent);
  color: var(--premium-accent);
}

.btn-premium.btn-outline:hover,
.tv-btn-outline:hover {
  background: rgba(43, 77, 255, 0.1);
  transform: translateY(-2px);
}

/* Gradient Button */
.btn-premium.btn-gradient {
  background: linear-gradient(135deg, var(--premium-accent) 0%, var(--premium-accent-light) 100%);
  color: white;
  box-shadow: 0 6px 16px rgba(0, 194, 255, 0.25);
}

.btn-premium.btn-gradient:hover {
  box-shadow: 0 10px 24px rgba(0, 194, 255, 0.35);
  transform: translateY(-2px);
}

/* Button sizes */
.btn-premium.btn-lg,
.tv-btn-primary {
  padding: var(--premium-space-6) var(--premium-space-10);
  font-size: 1rem;
}

.btn-premium.btn-md {
  padding: var(--premium-space-4) var(--premium-space-8);
  font-size: 0.95rem;
}

.btn-premium.btn-sm {
  padding: var(--premium-space-2) var(--premium-space-4);
  font-size: 0.875rem;
}

/* ===== PREMIUM CARDS ===== */

.card-premium {
  background: var(--premium-bg);
  border: 1px solid var(--premium-border-subtle);
  border-radius: var(--premium-radius-xl);
  padding: var(--premium-space-8);
  box-shadow: var(--premium-shadow-sm);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.card-premium::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--premium-accent) 0%, var(--premium-accent-light) 100%);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.card-premium:hover {
  border-color: var(--premium-accent);
  box-shadow: var(--premium-shadow-lg);
  transform: translateY(-4px);
}

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

.card-premium h4 {
  color: var(--premium-text-primary);
  font-size: 1.25rem;
  margin-bottom: var(--premium-space-4);
}

.card-premium p {
  color: var(--premium-text-secondary);
  margin-bottom: var(--premium-space-4);
}

/* Service Card */
.card-service {
  display: flex;
  flex-direction: column;
  gap: var(--premium-space-6);
}

.card-service .icon {
  width: 56px;
  height: 56px;
  border-radius: var(--premium-radius-lg);
  background: linear-gradient(135deg, rgba(43, 77, 255, 0.1) 0%, rgba(0, 194, 255, 0.1) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: var(--premium-accent);
}

/* Feature Card */
.card-feature {
  text-align: center;
}

.card-feature .icon {
  margin: 0 auto var(--premium-space-6);
}

/* ===== PREMIUM SECTIONS ===== */

section {
  padding: var(--premium-space-20) var(--premium-space-4);
}

section.section-hero {
  padding: var(--premium-space-24) var(--premium-space-4) var(--premium-space-20);
}

section.section-dark {
  background: var(--premium-primary);
  color: white;
}

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

section.section-dark p {
  color: rgba(255, 255, 255, 0.8);
}

/* Section Title */
.section-title {
  text-align: center;
  margin-bottom: var(--premium-space-16);
}

.section-title h2 {
  font-size: clamp(1.5rem, 5vw, 2.5rem);
  margin-bottom: var(--premium-space-4);
}

.section-title p {
  font-size: 1.125rem;
  max-width: 600px;
  margin: 0 auto;
  color: var(--premium-text-secondary);
}

/* ===== PREMIUM INPUTS ===== */

input,
textarea,
select {
  font-family: var(--premium-font-sans);
  font-size: 1rem;
  padding: var(--premium-space-4) var(--premium-space-6);
  border: 1px solid var(--premium-border);
  border-radius: var(--premium-radius-lg);
  transition: all 0.2s ease;
  width: 100%;
  color: var(--premium-text-primary);
}

input:focus,
textarea:focus,
select:focus {
  outline: none;
  border-color: var(--premium-accent);
  box-shadow: 0 0 0 3px rgba(43, 77, 255, 0.1);
}

input::placeholder {
  color: var(--premium-text-muted);
}

/* ===== PREMIUM BADGES ===== */

.badge-premium {
  display: inline-flex;
  align-items: center;
  gap: var(--premium-space-2);
  padding: var(--premium-space-2) var(--premium-space-4);
  border-radius: var(--premium-radius-md);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  white-space: nowrap;
}

.badge-premium.badge-primary {
  background: rgba(43, 77, 255, 0.1);
  color: var(--premium-accent);
}

.badge-premium.badge-success {
  background: rgba(16, 185, 129, 0.1);
  color: var(--premium-success);
}

.badge-premium.badge-warning {
  background: rgba(245, 158, 11, 0.1);
  color: var(--premium-warning);
}

/* ===== PREMIUM TYPOGRAPHY ===== */

.text-primary {
  color: var(--premium-text-primary);
}

.text-secondary {
  color: var(--premium-text-secondary);
}

.text-muted {
  color: var(--premium-text-muted);
}

.text-accent {
  color: var(--premium-accent);
}

.text-gradient {
  background: linear-gradient(135deg, var(--premium-accent) 0%, var(--premium-accent-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ===== DIVIDER & SEPARATORS ===== */

.divider-premium {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--premium-border), transparent);
  margin: var(--premium-space-8) 0;
}

/* ===== RESPONSIVE ADJUSTMENTS ===== */

@media (max-width: 768px) {
  :root {
    font-size: 15px;
  }
  
  section {
    padding: var(--premium-space-12) var(--premium-space-4);
  }
  
  .btn-premium.btn-lg {
    padding: var(--premium-space-4) var(--premium-space-6);
    font-size: 0.95rem;
  }
  
  .card-premium {
    padding: var(--premium-space-6);
  }
  
  .section-title h2 {
    font-size: 1.75rem;
  }
}

@media (max-width: 480px) {
  .btn-premium {
    padding: var(--premium-space-3) var(--premium-space-6);
    font-size: 0.875rem;
  }
  
  .card-premium {
    padding: var(--premium-space-4);
  }
  
  section {
    padding: var(--premium-space-8) var(--premium-space-4);
  }
}