/* ===== SoTahTech - Base Styles (Professional Structure) ===== */

/* === CORE/RESET & VARIABLES === */
:root {
  /* SoTahTech Brand Colors */
  --primary-dark: #00767D;           /* Caribbean Current */
  --primary-light: #00B4C3;         /* Moonstone */
  --primary-accent: #03B7C5;        /* Moonstone Alt */
  --secondary-gold: #E8B06A;        /* Earth Yellow */
  --secondary-orange: #E08D24;      /* Carrot Orange */
  --accent-blue: #19BBC8;           /* Robin Egg Blue */
  --accent-teal: #128087;           /* Teal */
  --accent-light: #87C5C9;          /* Tiffany Blue */
  --neutral-warm: #EFCFA7;          /* Sunset */
  --neutral-light: #F0F6F6;         /* Anti-flash White */
  
  /* System Colors */
  --neutral-dark: #1a1a1a;
  --neutral-medium: #4E4E4E;
  --neutral-gray: #666666;
  --neutral-light-gray: #B2B4AC;
  --success: #22C55E;
  --warning: #F59E0B;
  --danger: #EF4444;
  --info: #3B82F6;
  --purple: #5B21B6;
  
  /* Background Colors */
  --bg-primary: #ffffff;
  --bg-secondary: #f8f9fa;
  --bg-surface: var(--neutral-light);
  --claro-1: #F8FAFC;
  --claro-2: #FAF9FB;
  
  /* Gradients */
  --gradient-primary: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-light) 100%);
  --gradient-secondary: linear-gradient(135deg, var(--secondary-gold) 0%, var(--secondary-orange) 100%);
  --gradient-accent: linear-gradient(135deg, var(--accent-blue) 0%, var(--accent-light) 100%);
  --gradient-hero: linear-gradient(135deg, rgba(0, 118, 125, 0.95) 0%, rgba(0, 180, 195, 0.95) 100%);
  
  /* Shadows */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.12);
  --shadow-lg: 0 8px 25px rgba(0, 0, 0, 0.15);
  --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.2);
  --shadow-brand: 0 4px 20px rgba(0, 118, 125, 0.15);
  
  /* Spacing System */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-2xl: 48px;
  --spacing-3xl: 64px;
  --spacing-4xl: 80px;
  --spacing-5xl: 96px;
  
  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-2xl: 24px;
  --radius-full: 9999px;
  
  /* Transitions */
  --transition-fast: 0.15s ease-in-out;
  --transition-normal: 0.25s ease-in-out;
  --transition-slow: 0.35s ease-in-out;
}

/* === RESET === */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  line-height: 1.6;
  color: var(--neutral-dark);
  background-color: var(--bg-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* === TYPOGRAPHY SYSTEM === */
h1 {
  font-size: clamp(32px, 5vw, 48px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(28px, 4vw, 36px);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.01em;
}

h3 {
  font-size: clamp(24px, 3vw, 28px);
  font-weight: 600;
  line-height: 1.3;
}

h4 {
  font-size: 20px;
  font-weight: 600;
  line-height: 1.4;
}

h5 {
  font-size: 18px;
  font-weight: 500;
  line-height: 1.4;
}

h6 {
  font-size: 16px;
  font-weight: 500;
  line-height: 1.4;
}

.text-display {
  font-size: clamp(40px, 6vw, 64px);
  font-weight: 900;
  line-height: 1.0;
  letter-spacing: -0.03em;
}

.text-large {
  font-size: 20px;
  line-height: 1.5;
}

.text-base {
  font-size: 16px;
  line-height: 1.6;
}

.text-small {
  font-size: 14px;
  line-height: 1.5;
}

.text-xs {
  font-size: 12px;
  line-height: 1.4;
}

.text-micro {
  font-size: 10px;
  line-height: 1.3;
}

/* === COLOR UTILITIES === */
.text-primary { color: var(--primary-dark) !important; }
.text-secondary { color: var(--secondary-gold) !important; }
.text-accent { color: var(--accent-blue) !important; }
.text-neutral-dark { color: var(--neutral-dark) !important; }
.text-neutral-medium { color: var(--neutral-medium) !important; }
.text-neutral-gray { color: var(--neutral-gray) !important; }
.text-white { color: white !important; }
.text-success { color: var(--success) !important; }
.text-warning { color: var(--warning) !important; }
.text-danger { color: var(--danger) !important; }

.bg-primary { background-color: var(--bg-primary) !important; }
.bg-secondary { background-color: var(--bg-secondary) !important; }
.bg-surface { background-color: var(--bg-surface) !important; }
.bg-brand { background-color: var(--primary-dark) !important; }
.bg-accent { background-color: var(--accent-blue) !important; }

.gradient-primary { background: var(--gradient-primary); }
.gradient-secondary { background: var(--gradient-secondary); }
.gradient-accent { background: var(--gradient-accent); }

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

/* === LAYOUT UTILITIES === */
.container-custom {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.section {
  padding: var(--spacing-5xl) 0;
}

.section-sm {
  padding: var(--spacing-4xl) 0;
}

.section-lg {
  padding: calc(var(--spacing-5xl) * 1.5) 0;
}

/* === COMPONENT SYSTEM === */

/* Buttons */
.btn-custom {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: 12px 24px;
  font-family: inherit;
  font-size: 16px;
  font-weight: 600;
  text-decoration: none;
  border: none;
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-normal);
  white-space: nowrap;
  user-select: none;
  position: relative;
  overflow: hidden;
}

.btn-custom:focus {
  outline: 2px solid var(--primary-light);
  outline-offset: 2px;
}

.btn-primary {
  background: var(--gradient-primary);
  color: white;
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  text-decoration: none;
  color: white;
}

.btn-secondary {
  background: var(--gradient-secondary);
  color: white;
  box-shadow: var(--shadow-md);
}

.btn-secondary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  text-decoration: none;
  color: white;
}

.btn-outline {
  background: transparent;
  color: var(--primary-dark);
  border: 2px solid var(--primary-dark);
}

.btn-outline:hover {
  background: var(--primary-dark);
  color: white;
  text-decoration: none;
}

.btn-ghost {
  background: transparent;
  color: var(--neutral-dark);
  border: 2px solid transparent;
}

.btn-ghost:hover {
  background: var(--bg-surface);
  color: var(--neutral-dark);
  text-decoration: none;
}

.btn-lg {
  padding: 16px 32px;
  font-size: 18px;
}

.btn-sm {
  padding: 8px 16px;
  font-size: 14px;
}

/* Cards */
.card-custom {
  background: white;
  border: none;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-normal);
  overflow: hidden;
}

.card-custom:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

.card-custom.card-highlight {
  border: 2px solid var(--primary-light);
  box-shadow: var(--shadow-brand);
}

.card-custom .card-body {
  padding: var(--spacing-xl);
}

.card-title {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: var(--spacing-md);
  color: var(--neutral-dark);
}

.card-text {
  color: var(--neutral-gray);
  margin-bottom: var(--spacing-lg);
}

/* Badges */
.badge-custom {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: 6px 12px;
  font-size: 12px;
  font-weight: 600;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.badge-primary {
  background: var(--gradient-primary);
  color: white;
}

.badge-secondary {
  background: var(--gradient-secondary);
  color: white;
}

.badge-accent {
  background: var(--gradient-accent);
  color: white;
}

.badge-outline {
  background: transparent;
  color: var(--primary-dark);
  border: 1px solid var(--primary-dark);
}

.badge-light {
  background: rgba(255, 255, 255, 0.2);
  color: white;
  border: 1px solid rgba(255, 255, 255, 0.3);
}

/* Feature Lists */
.feature-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.feature-list li {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) 0;
  font-size: 14px;
  line-height: 1.5;
}

.feature-list .bi {
  font-size: 12px;
  margin-top: 2px;
  min-width: 16px;
}

.feature-included .bi {
  color: var(--success);
}

.feature-excluded .bi {
  color: var(--danger);
}

.feature-excluded {
  color: var(--neutral-light-gray);
}

/* Icons */
.icon-wrapper {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 64px;
  height: 64px;
  border-radius: var(--radius-full);
  background: var(--gradient-primary);
  color: white;
  font-size: 24px;
}

.icon-wrapper.icon-secondary {
  background: var(--gradient-secondary);
}

.icon-wrapper.icon-accent {
  background: var(--gradient-accent);
}

.icon-wrapper.icon-lg {
  width: 80px;
  height: 80px;
  font-size: 32px;
}

.icon-wrapper.icon-sm {
  width: 48px;
  height: 48px;
  font-size: 20px;
}

/* Shadows */
.shadow-sm { box-shadow: var(--shadow-sm); }
.shadow-md { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-lg); }
.shadow-xl { box-shadow: var(--shadow-xl); }
.shadow-brand { box-shadow: var(--shadow-brand); }

/* Spacing */
.m-0 { margin: 0 !important; }
.mt-0 { margin-top: 0 !important; }
.mb-0 { margin-bottom: 0 !important; }
.ml-0 { margin-left: 0 !important; }
.mr-0 { margin-right: 0 !important; }

.p-0 { padding: 0 !important; }
.pt-0 { padding-top: 0 !important; }
.pb-0 { padding-bottom: 0 !important; }
.pl-0 { padding-left: 0 !important; }
.pr-0 { padding-right: 0 !important; }

/* Navigation */
.navbar-custom {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
  padding: var(--spacing-md) 0;
}

.navbar-custom.navbar-scrolled {
  background: rgba(255, 255, 255, 0.98);
  box-shadow: var(--shadow-md);
  padding: var(--spacing-sm) 0;
}

.navbar-brand-custom {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 20px;
  font-weight: 700;
  color: var(--neutral-dark);
  text-decoration: none;
}

.navbar-brand-custom:hover {
  text-decoration: none;
  color: var(--neutral-dark);
}

.navbar-brand-custom img {
  height: 40px;
  width: auto;
}

.nav-list {
  display: flex;
  list-style: none;
  gap: var(--spacing-xl);
  margin: 0;
  padding: 0;
}

.nav-link-custom {
  font-weight: 500;
  color: var(--neutral-dark);
  text-decoration: none;
  padding: var(--spacing-sm) 0;
  transition: all var(--transition-normal);
  position: relative;
}

.nav-link-custom:hover {
  color: var(--primary-dark);
  text-decoration: none;
}

.nav-link-custom.active {
  color: var(--primary-dark);
  font-weight: 600;
}

.nav-link-custom::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-primary);
  transition: width var(--transition-normal);
}

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

/* Animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes fadeInRight {
  from {
    opacity: 0;
    transform: translateX(30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes float {
  0%, 100% { transform: translateY(0px) rotate(0deg); }
  33% { transform: translateY(-10px) rotate(0.5deg); }
  66% { transform: translateY(-5px) rotate(-0.5deg); }
}

.animate-fade-in-up {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.8s ease-out;
}

.animate-fade-in-left {
  opacity: 0;
  transform: translateX(-30px);
  transition: all 0.8s ease-out;
}

.animate-fade-in-right {
  opacity: 0;
  transform: translateX(30px);
  transition: all 0.8s ease-out;
}

.animate-visible {
  opacity: 1 !important;
  transform: translateY(0) translateX(0) !important;
}

/* === RESPONSIVE DESIGN === */
@media (max-width: 1199px) {
  .container-custom {
    max-width: 100%;
    padding: 0 var(--spacing-lg);
  }
}

@media (max-width: 991px) {
  .nav-list {
    display: none;
    position: fixed;
    top: 80px;
    left: 0;
    right: 0;
    background: white;
    flex-direction: column;
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-lg);
    gap: var(--spacing-lg);
  }
  
  .nav-list.active {
    display: flex;
  }
}

@media (max-width: 768px) {
  :root {
    --spacing-5xl: 64px;
    --spacing-4xl: 48px;
    --spacing-3xl: 32px;
  }
  
  .container-custom {
    padding: 0 var(--spacing-md);
  }
  
  .section {
    padding: var(--spacing-4xl) 0;
  }
  
  .btn-custom {
    width: 100%;
    justify-content: center;
  }
  
  .card-custom .card-body {
    padding: var(--spacing-lg);
  }
}

@media (max-width: 576px) {
  .container-custom {
    padding: 0 var(--spacing-sm);
  }
  
  .section {
    padding: var(--spacing-3xl) 0;
  }
}

/* === PRINT STYLES === */
@media print {
  .navbar-custom {
    display: none;
  }
  
  .section {
    padding: 20px 0;
  }
  
  .card-custom {
    box-shadow: none;
    border: 1px solid #ddd;
  }
}