/* ============================================
   TryOn360 - Global Styles & Design System
   Brand: Digital360
   ============================================ */

/* ============================================
   CSS Custom Properties (Design Tokens)
   ============================================ */
:root {
  /* Color Palette */
  --primary: #ff0000;
  --primary-hover: #cc0000;
  --secondary: #1d3853;
  --secondary-hover: #152a3e;
  --neutral: #ffffff;
  --neutral-dark: #f8f8f8;
  --gray-100: #f5f5f5;
  --gray-200: #e5e5e5;
  --gray-300: #d4d4d4;
  --gray-400: #a3a3a3;
  --gray-500: #737373;
  --gray-600: #525252;
  --gray-700: #404040;
  --gray-800: #262626;
  --gray-900: #171717;

  /* Typography Scale (Base: 18px) */
  --font-size-xs: 0.875rem;   /* 14px */
  --font-size-sm: 1rem;        /* 16px */
  --font-size-base: 1.125rem;  /* 18px */
  --font-size-lg: 1.25rem;     /* 20px */
  --font-size-xl: 1.5rem;      /* 24px */
  --font-size-2xl: 1.875rem;   /* 30px */
  --font-size-3xl: 2.25rem;    /* 36px */
  --font-size-4xl: 3rem;       /* 48px */
  --font-size-5xl: 3.75rem;    /* 60px */
  --font-size-6xl: 4.5rem;     /* 72px */
  --font-size-7xl: 6rem;       /* 96px */

  /* Font Weights */
  --font-weight-light: 300;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --font-weight-extrabold: 800;

  /* Line Heights */
  --line-height-tight: 1.25;
  --line-height-snug: 1.375;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.625;
  --line-height-loose: 2;

  /* Letter Spacing */
  --letter-spacing-tighter: -0.05em;
  --letter-spacing-tight: -0.025em;
  --letter-spacing-normal: 0;
  --letter-spacing-wide: 0.025em;
  --letter-spacing-wider: 0.05em;
  --letter-spacing-widest: 0.1em;

  /* Spacing Scale (rem) */
  --spacing-0: 0;
  --spacing-px: 1px;
  --spacing-0_5: 0.125rem;   /* 2px */
  --spacing-1: 0.25rem;      /* 4px */
  --spacing-1_5: 0.375rem;   /* 6px */
  --spacing-2: 0.5rem;       /* 8px */
  --spacing-2_5: 0.625rem;   /* 10px */
  --spacing-3: 0.75rem;      /* 12px */
  --spacing-3_5: 0.875rem;   /* 14px */
  --spacing-4: 1rem;         /* 16px */
  --spacing-5: 1.25rem;      /* 20px */
  --spacing-6: 1.5rem;       /* 24px */
  --spacing-7: 1.75rem;      /* 28px */
  --spacing-8: 2rem;         /* 32px */
  --spacing-9: 2.25rem;      /* 36px */
  --spacing-10: 2.5rem;      /* 40px */
  --spacing-11: 2.75rem;     /* 44px */
  --spacing-12: 3rem;        /* 48px */
  --spacing-14: 3.5rem;      /* 56px */
  --spacing-16: 4rem;        /* 64px */
  --spacing-20: 5rem;        /* 80px */
  --spacing-24: 6rem;        /* 96px */
  --spacing-28: 7rem;        /* 112px */
  --spacing-32: 8rem;        /* 128px */

  /* Border Radius */
  --radius-none: 0;
  --radius-sm: 0.125rem;     /* 2px */
  --radius-base: 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;

  /* Transitions */
  --transition-fast: 150ms;
  --transition-base: 200ms;
  --transition-slow: 300ms;
  --transition-slower: 500ms;
  --transition-timing: cubic-bezier(0.4, 0, 0.2, 1);

  /* Z-Index Scale */
  --z-base: 0;
  --z-dropdown: 1000;
  --z-sticky: 1100;
  --z-fixed: 1200;
  --z-modal-backdrop: 1300;
  --z-modal: 1400;
  --z-popover: 1500;
  --z-tooltip: 1600;

  /* Breakpoints (for reference in JS) */
  --breakpoint-sm: 640px;
  --breakpoint-md: 768px;
  --breakpoint-lg: 1024px;
  --breakpoint-xl: 1280px;
  --breakpoint-2xl: 1536px;
}

/* ============================================
   CSS Reset & Base Styles
   ============================================ */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-normal);
  line-height: var(--line-height-normal);
  color: var(--gray-900);
  background-color: var(--neutral);
  min-height: 100vh;
  margin: 0;
  padding: 0;
}

/* ============================================
   Scroll Snap
   ============================================ */
#main-content > section,
#main-content > .section-container {
  scroll-snap-align: start;
  scroll-snap-stop: always;
}

/* Disable scroll-snap and fit content on mobile */
@media (max-width: 767px) {
  #main-content > section,
  #main-content > .section-container {
    scroll-snap-align: unset;
    scroll-snap-stop: unset;
  }

  .section,
  .section-sm,
  .section-lg,
  .section-container {
    height: auto !important;
    min-height: auto !important;
    overflow: visible !important;
    padding-top: var(--spacing-8);
    padding-bottom: var(--spacing-8);
  }
}

/* ============================================
   Typography System
   ============================================ */
h1, h2, h3, h4, h5, h6 {
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  color: var(--secondary);
  margin-bottom: var(--spacing-4);
}

h1 {
  font-size: 60px;
  letter-spacing: var(--letter-spacing-tight);
}

h2 {
  font-size: 48px;
  letter-spacing: var(--letter-spacing-tight);
}

h3 {
  font-size: 32px;
  letter-spacing: var(--letter-spacing-tight);
}

h4 {
  font-size: var(--font-size-2xl);
}

h5 {
  font-size: var(--font-size-xl);
}

h6 {
  font-size: var(--font-size-lg);
}

p {
  font-size: 18px;
  margin-bottom: var(--spacing-4);
  color: var(--gray-600);
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: color var(--transition-base) var(--transition-timing);
}

a:hover {
  color: var(--primary-hover);
}

/* ============================================
   Layout Utilities
   ============================================ */
.container {
  width: 100%;
  max-width: 1280px;
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--spacing-4);
  padding-right: var(--spacing-4);
}

.container-sm {
  max-width: 640px;
}

.container-md {
  max-width: 768px;
}

.container-lg {
  max-width: 1024px;
}

.container-xl {
  max-width: 1280px;
}

.section {
  min-height: 100vh;
  height: 100vh;
  scroll-snap-align: start;
  scroll-snap-stop: always;
  padding-top: var(--spacing-20);
  padding-bottom: var(--spacing-20);
  display: flex;
  flex-direction: column;
  justify-content: center;
  overflow: hidden;
}

.section-sm {
  min-height: 100vh;
  height: 100vh;
  scroll-snap-align: start;
  scroll-snap-stop: always;
  padding-top: var(--spacing-12);
  padding-bottom: var(--spacing-12);
  display: flex;
  flex-direction: column;
  justify-content: center;
  overflow: hidden;
}

.section-lg {
  min-height: 100vh;
  height: 100vh;
  scroll-snap-align: start;
  scroll-snap-stop: always;
  padding-top: var(--spacing-28);
  padding-bottom: var(--spacing-28);
  display: flex;
  flex-direction: column;
  justify-content: center;
  overflow: hidden;
}

/* Section container for loaded sections */
.section-container {
  min-height: 100vh;
  height: 100vh;
  scroll-snap-align: start;
  scroll-snap-stop: always;
  display: flex;
  flex-direction: column;
  justify-content: center;
  overflow: hidden;
}

/* ============================================
   Grid System
   ============================================ */
.grid {
  display: grid;
}

.grid-cols-1 {
  grid-template-columns: repeat(1, minmax(0, 1fr));
}

.grid-cols-2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.grid-cols-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.grid-cols-4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.gap-4 {
  gap: var(--spacing-4);
}

.gap-6 {
  gap: var(--spacing-6);
}

.gap-8 {
  gap: var(--spacing-8);
}

/* ============================================
   Flexbox Utilities
   ============================================ */
.flex {
  display: flex;
}

.flex-col {
  flex-direction: column;
}

.flex-row {
  flex-direction: row;
}

.items-center {
  align-items: center;
}

.items-start {
  align-items: flex-start;
}

.items-end {
  align-items: flex-end;
}

.justify-center {
  justify-content: center;
}

.justify-between {
  justify-content: space-between;
}

.justify-start {
  justify-content: flex-start;
}

.justify-end {
  justify-content: flex-end;
}

/* ============================================
   Text Utilities
   ============================================ */
.text-center {
  text-align: center;
}

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

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

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

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

.text-white {
  color: var(--neutral);
}

.text-gray {
  color: var(--gray-500);
}

.font-light {
  font-weight: var(--font-weight-light);
}

.font-normal {
  font-weight: var(--font-weight-normal);
}

.font-medium {
  font-weight: var(--font-weight-medium);
}

.font-semibold {
  font-weight: var(--font-weight-semibold);
}

.font-bold {
  font-weight: var(--font-weight-bold);
}

/* ============================================
   Spacing Utilities
   ============================================ */
.mt-0 { margin-top: var(--spacing-0); }
.mt-1 { margin-top: var(--spacing-1); }
.mt-2 { margin-top: var(--spacing-2); }
.mt-3 { margin-top: var(--spacing-3); }
.mt-4 { margin-top: var(--spacing-4); }
.mt-6 { margin-top: var(--spacing-6); }
.mt-8 { margin-top: var(--spacing-8); }
.mt-10 { margin-top: var(--spacing-10); }
.mt-12 { margin-top: var(--spacing-12); }
.mt-16 { margin-top: var(--spacing-16); }
.mt-20 { margin-top: var(--spacing-20); }

.mb-0 { margin-bottom: var(--spacing-0); }
.mb-1 { margin-bottom: var(--spacing-1); }
.mb-2 { margin-bottom: var(--spacing-2); }
.mb-3 { margin-bottom: var(--spacing-3); }
.mb-4 { margin-bottom: var(--spacing-4); }
.mb-6 { margin-bottom: var(--spacing-6); }
.mb-8 { margin-bottom: var(--spacing-8); }
.mb-10 { margin-bottom: var(--spacing-10); }
.mb-12 { margin-bottom: var(--spacing-12); }
.mb-16 { margin-bottom: var(--spacing-16); }
.mb-20 { margin-bottom: var(--spacing-20); }

.ml-0 { margin-left: var(--spacing-0); }
.ml-1 { margin-left: var(--spacing-1); }
.ml-2 { margin-left: var(--spacing-2); }
.ml-3 { margin-left: var(--spacing-3); }
.ml-4 { margin-left: var(--spacing-4); }
.ml-auto { margin-left: auto; }

.mr-0 { margin-right: var(--spacing-0); }
.mr-1 { margin-right: var(--spacing-1); }
.mr-2 { margin-right: var(--spacing-2); }
.mr-3 { margin-right: var(--spacing-3); }
.mr-4 { margin-right: var(--spacing-4); }
.mr-auto { margin-right: auto; }

.p-0 { padding: var(--spacing-0); }
.p-1 { padding: var(--spacing-1); }
.p-2 { padding: var(--spacing-2); }
.p-3 { padding: var(--spacing-3); }
.p-4 { padding: var(--spacing-4); }
.p-6 { padding: var(--spacing-6); }
.p-8 { padding: var(--spacing-8); }

.px-4 { padding-left: var(--spacing-4); padding-right: var(--spacing-4); }
.px-6 { padding-left: var(--spacing-6); padding-right: var(--spacing-6); }
.px-8 { padding-left: var(--spacing-8); padding-right: var(--spacing-8); }

.py-4 { padding-top: var(--spacing-4); padding-bottom: var(--spacing-4); }
.py-6 { padding-top: var(--spacing-6); padding-bottom: var(--spacing-6); }
.py-8 { padding-top: var(--spacing-8); padding-bottom: var(--spacing-8); }

/* ============================================
   Display Utilities
   ============================================ */
.hidden {
  display: none;
}

.block {
  display: block;
}

.inline-block {
  display: inline-block;
}

.inline {
  display: inline;
}

/* ============================================
   Button Base Styles
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-3) var(--spacing-6);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  line-height: var(--line-height-tight);
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: all var(--transition-base) var(--transition-timing);
  text-decoration: none;
}

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

.btn-primary {
  background-color: var(--primary);
  color: var(--neutral);
}

.btn-primary:hover {
  background-color: var(--primary-hover);
}

.btn-secondary {
  background-color: var(--secondary);
  color: var(--neutral);
}

.btn-secondary:hover {
  background-color: var(--secondary-hover);
}

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

.btn-outline:hover {
  background-color: var(--primary);
  color: var(--neutral);
}

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

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

/* ============================================
   Image Utilities
   ============================================ */
img {
  max-width: 100%;
  height: auto;
  display: block;
  background: transparent;
  border: none;
  box-shadow: none;
  border-radius: 0;
  padding: 0;
  margin: 0;
}

.img-cover {
  object-fit: cover;
}

.img-contain {
  object-fit: contain;
}

/* ============================================
   Responsive Breakpoints
   ============================================ */
@media (min-width: 640px) {
  :root {
    --font-size-sm: 0.875rem;
  }

  .sm\:grid-cols-2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .sm\:hidden {
    display: none;
  }

  .sm\:block {
    display: block;
  }

  .sm\:flex {
    display: flex;
  }
}

@media (min-width: 768px) {
  .md\:grid-cols-2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .md\:grid-cols-3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .md\:hidden {
    display: none;
  }

  .md\:block {
    display: block;
  }

  .md\:flex {
    display: flex;
  }

  .md\:text-left {
    text-align: left;
  }
}

@media (min-width: 1024px) {
  .lg\:grid-cols-3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .lg\:grid-cols-4 {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .lg\:hidden {
    display: none;
  }

  .lg\:block {
    display: block;
  }

  .lg\:flex {
    display: flex;
  }
}

@media (min-width: 1280px) {
  .xl\:grid-cols-4 {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .xl\:hidden {
    display: none;
  }

  .xl\:block {
    display: block;
  }

  .xl\:flex {
    display: flex;
  }
}

/* ============================================
   Print Styles
   ============================================ */
@media print {
  * {
    background: transparent !important;
    color: black !important;
    box-shadow: none !important;
    text-shadow: none !important;
  }

  a,
  a:visited {
    text-decoration: underline;
  }

  a[href]:after {
    content: " (" attr(href) ")";
  }

  img {
    page-break-inside: avoid;
  }

  h2,
  h3 {
    page-break-after: avoid;
  }
}