/* ===== GELATO STUDIO MODERN DESIGN SYSTEM ===== */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Kanit:wght@300;400;500;600;700&display=swap');

/* Color Palette - Modern GELATO Brand */
:root {
  /* Primary Colors */
  --gelato-white: #FFFFFF;
  --gelato-black: #0F172A;
  --gelato-gray: #64748B;
  --gelato-red: #EF4444;
  --gelato-gold: #F59E0B;
  --gelato-blue: #3B82F6;
  --gelato-purple: #8B5CF6;
  
  /* Gradient Colors */
  --gradient-primary: linear-gradient(135deg, #EF4444 0%, #F59E0B 100%);
  --gradient-secondary: linear-gradient(135deg, #3B82F6 0%, #8B5CF6 100%);
  --gradient-hero: linear-gradient(135deg, #0F172A 0%, #1E293B 50%, #334155 100%);
  
  /* Background Colors */
  --bg-primary: #FFFFFF;
  --bg-secondary: #F8FAFC;
  --bg-tertiary: #F1F5F9;
  --bg-dark: #0F172A;
  --bg-card: #FFFFFF;
  
  /* Text Colors */
  --text-primary: #0F172A;
  --text-secondary: #64748B;
  --text-tertiary: #94A3B8;
  --text-white: #FFFFFF;
  
  /* Border Colors */
  --border-light: #E2E8F0;
  --border-medium: #CBD5E1;
  --border-dark: #94A3B8;
  
  /* Semantic Colors */
  --success: #10B981;
  --success-light: #D1FAE5;
  --warning: #F59E0B;
  --warning-light: #FEF3C7;
  --error: #EF4444;
  --error-light: #FEE2E2;
  --info: #3B82F6;
  --info-light: #DBEAFE;
  
  /* Typography */
  --font-primary: 'Inter', 'Sukhumvit Set', 'Kanit', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-heading: 'Kanit', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'SF Mono', 'Monaco', 'Inconsolata', 'Roboto Mono', monospace;
  
  /* Font Sizes */
  --text-xs: 0.75rem;    /* 12px */
  --text-sm: 0.875rem;   /* 14px */
  --text-base: 1rem;     /* 16px */
  --text-lg: 1.125rem;  /* 18px */
  --text-xl: 1.25rem;   /* 20px */
  --text-2xl: 1.5rem;   /* 24px */
  --text-3xl: 1.875rem; /* 30px */
  --text-4xl: 2.25rem;  /* 36px */
  --text-5xl: 3rem;     /* 48px */
  
  /* Spacing */
  --space-0: 0;
  --space-1: 0.25rem;   /* 4px */
  --space-2: 0.5rem;    /* 8px */
  --space-3: 0.75rem;   /* 12px */
  --space-4: 1rem;      /* 16px */
  --space-5: 1.25rem;   /* 20px */
  --space-6: 1.5rem;    /* 24px */
  --space-8: 2rem;      /* 32px */
  --space-10: 2.5rem;   /* 40px */
  --space-12: 3rem;     /* 48px */
  --space-16: 4rem;     /* 64px */
  --space-20: 5rem;     /* 80px */
  
  /* Border Radius */
  --radius-none: 0;
  --radius-sm: 0.25rem;   /* 4px */
  --radius-md: 0.375rem;  /* 6px */
  --radius-lg: 0.5rem;    /* 8px */
  --radius-xl: 0.75rem;   /* 12px */
  --radius-2xl: 1rem;     /* 16px */
  --radius-3xl: 1.5rem;   /* 24px */
  --radius-full: 9999px;
  
  /* Shadows */
  --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  
  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
  
  /* Z-Index */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-popover: 1060;
  --z-tooltip: 1070;
}

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

*::before,
*::after {
  box-sizing: border-box;
}

html {
  font-size: 16px;
  line-height: 1.5;
  -webkit-text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-primary);
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg-secondary);
  overflow-x: hidden;
}

/* ===== TYPOGRAPHY ===== */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: 1.2;
  color: var(--text-primary);
  margin-bottom: var(--space-4);
}

h1 { font-size: var(--text-4xl); font-weight: 700; }
h2 { font-size: var(--text-3xl); font-weight: 600; }
h3 { font-size: var(--text-2xl); font-weight: 600; }
h4 { font-size: var(--text-xl); font-weight: 500; }
h5 { font-size: var(--text-lg); font-weight: 500; }
h6 { font-size: var(--text-base); font-weight: 500; }

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

a {
  color: var(--gelato-red);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--gelato-gold);
}

/* ===== UTILITY CLASSES ===== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-4);
}

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.font-bold { font-weight: 700; }
.font-semibold { font-weight: 600; }
.font-medium { font-weight: 500; }
.font-normal { font-weight: 400; }

.text-primary { color: var(--text-primary); }
.text-secondary { color: var(--text-secondary); }
.text-tertiary { color: var(--text-tertiary); }
.text-white { color: var(--text-white); }

.bg-primary { background-color: var(--bg-primary); }
.bg-secondary { background-color: var(--bg-secondary); }
.bg-tertiary { background-color: var(--bg-tertiary); }

.rounded { border-radius: var(--radius-md); }
.rounded-lg { border-radius: var(--radius-lg); }
.rounded-xl { border-radius: var(--radius-xl); }
.rounded-2xl { border-radius: var(--radius-2xl); }
.rounded-full { border-radius: var(--radius-full); }

.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); }

.transition { transition: all var(--transition-normal); }
.transition-fast { transition: all var(--transition-fast); }
.transition-slow { transition: all var(--transition-slow); }

/* ===== MODERN HEADER ===== */
.main-header {
  background: var(--bg-primary);
  border-bottom: 1px solid var(--border-light);
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(10px);
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-4) 0;
  min-height: 70px;
}

.logo a {
  color: var(--text-primary);
  text-decoration: none;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.logo h1 {
  font-size: var(--text-2xl);
  font-weight: 700;
  margin-bottom: 0;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.logo span {
  font-size: var(--text-sm);
  color: var(--text-tertiary);
  font-weight: 400;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.main-nav a {
  color: var(--text-secondary);
  font-weight: 500;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-lg);
  transition: all var(--transition-fast);
  position: relative;
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--gelato-red);
  background-color: var(--error-light);
}

.user-menu {
  position: relative;
  display: flex;
  align-items: center;
  gap: var(--space-2);
  cursor: pointer;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-lg);
  transition: all var(--transition-fast);
}

.user-menu:hover {
  background-color: var(--bg-tertiary);
}

.avatar-sm {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-full);
  object-fit: cover;
  border: 2px solid var(--border-light);
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  right: 0;
  background: var(--bg-primary);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: var(--space-2);
  min-width: 200px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all var(--transition-fast);
  z-index: var(--z-dropdown);
}

.user-menu:hover .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-menu a {
  display: block;
  padding: var(--space-2) var(--space-3);
  color: var(--text-secondary);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.dropdown-menu a:hover {
  background-color: var(--bg-tertiary);
  color: var(--gelato-red);
}

.auth-buttons {
  display: flex;
  gap: var(--space-3);
  align-items: center;
}

/* ===== MODERN BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-size: var(--text-sm);
  font-weight: 500;
  line-height: 1;
  border: none;
  border-radius: var(--radius-lg);
  cursor: pointer;
  text-decoration: none;
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

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

.btn-primary:hover:not(:disabled) {
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-secondary {
  background: var(--bg-primary);
  color: var(--text-primary);
  border: 1px solid var(--border-medium);
}

.btn-secondary:hover:not(:disabled) {
  background: var(--bg-tertiary);
  border-color: var(--border-dark);
}

.btn-outline {
  background: transparent;
  color: var(--gelato-red);
  border: 1px solid var(--gelato-red);
}

.btn-outline:hover:not(:disabled) {
  background: var(--gelato-red);
  color: var(--text-white);
}

.btn-block {
  width: 100%;
}

.btn-sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-xs);
}

.btn-lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-lg);
}

/* ===== MODERN CARDS ===== */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: all var(--transition-normal);
}

.card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.card-header {
  padding: var(--space-6);
  border-bottom: 1px solid var(--border-light);
  background: var(--bg-tertiary);
}

.card-body {
  padding: var(--space-6);
}

.card-footer {
  padding: var(--space-6);
  border-top: 1px solid var(--border-light);
  background: var(--bg-tertiary);
}

/* ===== MODERN FORMS ===== */
.form-group {
  margin-bottom: var(--space-6);
}

.form-group label {
  display: block;
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: var(--space-2);
}

.form-control {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-base);
  line-height: 1.5;
  color: var(--text-primary);
  background: var(--bg-primary);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-lg);
  transition: all var(--transition-fast);
}

.form-control:focus {
  outline: none;
  border-color: var(--gelato-red);
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

.form-control::placeholder {
  color: var(--text-tertiary);
}

textarea.form-control {
  resize: vertical;
  min-height: 100px;
}

select.form-control {
  cursor: pointer;
}

/* ===== ALERTS ===== */
.alert {
  padding: var(--space-4) var(--space-5);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-4);
  border: 1px solid;
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.alert-success {
  background: var(--success-light);
  color: var(--success);
  border-color: var(--success);
}

.alert-error {
  background: var(--error-light);
  color: var(--error);
  border-color: var(--error);
}

.alert-warning {
  background: var(--warning-light);
  color: var(--warning);
  border-color: var(--warning);
}

.alert-info {
  background: var(--info-light);
  color: var(--info);
  border-color: var(--info);
}

/* ===== HERO SECTION ===== */
.hero {
  background: var(--gradient-hero);
  color: var(--text-white);
  padding: var(--space-20) 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="50" cy="50" r="1" fill="white" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
  opacity: 0.1;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
  margin: 0 auto;
}

.hero h2 {
  font-size: var(--text-5xl);
  font-weight: 700;
  margin-bottom: var(--space-4);
  color: var(--text-white);
}

.hero p {
  font-size: var(--text-xl);
  margin-bottom: var(--space-8);
  color: rgba(255, 255, 255, 0.9);
}

.hero-buttons {
  display: flex;
  gap: var(--space-4);
  justify-content: center;
  flex-wrap: wrap;
}

/* ===== SERVICES GRID ===== */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-6);
  margin-top: var(--space-8);
}

.service-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  text-align: center;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient-primary);
}

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

.service-icon {
  font-size: var(--text-4xl);
  margin-bottom: var(--space-4);
}

.service-card h4 {
  font-size: var(--text-xl);
  font-weight: 600;
  margin-bottom: var(--space-2);
  color: var(--text-primary);
}

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

.price {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--gelato-red);
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 768px) {
  .container {
    padding: 0 var(--space-4);
  }
  
  .header-content {
    flex-direction: column;
    gap: var(--space-4);
    padding: var(--space-4) 0;
  }
  
  .main-nav {
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-3);
  }
  
  .hero h2 {
    font-size: var(--text-3xl);
  }
  
  .hero p {
    font-size: var(--text-lg);
  }
  
  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }
  
  .services-grid {
    grid-template-columns: 1fr;
    gap: var(--space-4);
  }
  
  .auth-buttons {
    flex-direction: column;
    gap: var(--space-2);
  }
}

@media (max-width: 480px) {
  .hero {
    padding: var(--space-12) 0;
  }
  
  .hero h2 {
    font-size: var(--text-2xl);
  }
  
  .service-card {
    padding: var(--space-4);
  }
}

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

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

.animate-fade-in-up {
  animation: fadeInUp 0.6s ease-out;
}

.animate-fade-in {
  animation: fadeIn 0.4s ease-out;
}

.animate-pulse {
  animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

/* ===== LOADING STATES ===== */
.loading {
  position: relative;
  pointer-events: none;
}

.loading::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 20px;
  height: 20px;
  margin: -10px 0 0 -10px;
  border: 2px solid var(--border-light);
  border-top-color: var(--gelato-red);
  border-radius: var(--radius-full);
  animation: spin 1s linear infinite;
}

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

/* ===== SCROLLBAR STYLING ===== */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-tertiary);
}

::-webkit-scrollbar-thumb {
  background: var(--border-dark);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-tertiary);
}

/* ===== FOCUS STYLES ===== */
*:focus {
  outline: 2px solid var(--gelato-red);
  outline-offset: 2px;
}

button:focus,
.btn:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.2);
}

/* ===== PRINT STYLES ===== */
@media print {
  .main-header,
  .hero-buttons,
  .btn {
    display: none !important;
  }
  
  body {
    background: white !important;
    color: black !important;
  }
}