/* ============================================
   TATTOO STUDIO - BASE STYLES
   Dark, Moody, Luxurious, Edgy, Artisan
   ============================================ */

/* --------------------------------------------
   1. CSS CUSTOM PROPERTIES (Variables)
   -------------------------------------------- */
:root {
  /* Color Palette - Dark & Luxurious */
  --color-bg-primary: #0a0a0a;
  --color-bg-secondary: #111111;
  --color-bg-tertiary: #1a1a1a;
  --color-bg-elevated: #222222;
  
  --color-text-primary: #f0f0f0;
  --color-text-secondary: #a0a0a0;
  --color-text-muted: #666666;
  
  --color-burgundy: #722f37;
  --color-burgundy-light: #8b3a42;
  --color-burgundy-dark: #5a252c;
  --color-gold: #c9a961;
  --color-gold-light: #dbbc7a;
  --color-gold-dark: #a88b4a;
  
  --color-border: #2a2a2a;
  --color-border-light: #3a3a3a;
  
  --color-success: #059669;
  --color-warning: #d97706;
  --color-danger: #dc2626;
  
  /* Typography */
  --font-heading: 'Crimson Pro', 'Playfair Display', 'Georgia', 'Times New Roman', serif;
  --font-body: 'Inter', 'Helvetica Neue', 'Arial', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
  
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  --text-4xl: 2.25rem;
  --text-5xl: 3rem;
  --text-6xl: 3.75rem;
  
  --leading-none: 1;
  --leading-tight: 1.25;
  --leading-snug: 1.375;
  --leading-normal: 1.5;
  --leading-relaxed: 1.625;
  --leading-loose: 2;
  
  /* Spacing Scale (0-96px) */
  --space-0: 0;
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;
  --space-48: 12rem;
  --space-64: 16rem;
  --space-96: 24rem;
  
  /* Effects */
  --radius-none: 0;
  --radius-sm: 0.125rem;
  --radius-md: 0.25rem;
  --radius-lg: 0.5rem;
  --radius-xl: 1rem;
  
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.5);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.5), 0 2px 4px -1px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.6), 0 4px 6px -2px rgba(0, 0, 0, 0.4);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.7), 0 10px 10px -5px rgba(0, 0, 0, 0.5);
  --shadow-gold: 0 0 20px rgba(201, 169, 97, 0.15);
  
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 350ms ease;
  
  /* Layout */
  --container-max: 1280px;
  --container-padding: var(--space-6);
}

@media (min-width: 640px) {
  :root {
    --container-padding: var(--space-8);
  }
}

/* --------------------------------------------
   2. RESET & NORMALIZE
   -------------------------------------------- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

body {
  min-height: 100vh;
  line-height: var(--leading-normal);
  text-rendering: optimizeLegibility;
}

img,
picture,
video,
canvas,
svg {
  display: block;
  max-width: 100%;
  height: auto;
}

input,
button,
textarea,
select {
  font: inherit;
  color: inherit;
}

button {
  cursor: pointer;
  background: none;
  border: none;
}

ul,
ol {
  list-style: none;
}

a {
  text-decoration: none;
  color: inherit;
}

/* --------------------------------------------
   3. BASE STYLES
   -------------------------------------------- */
body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text-primary);
  background-color: var(--color-bg-primary);
  background-image: 
    radial-gradient(circle at 20% 50%, rgba(114, 47, 55, 0.03) 0%, transparent 50%),
    radial-gradient(circle at 80% 80%, rgba(201, 169, 97, 0.02) 0%, transparent 40%);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: var(--leading-tight);
  letter-spacing: -0.02em;
  color: var(--color-text-primary);
}

h1 { font-size: var(--text-5xl); }
h2 { font-size: var(--text-4xl); }
h3 { font-size: var(--text-3xl); }
h4 { font-size: var(--text-2xl); }
h5 { font-size: var(--text-xl); }
h6 { font-size: var(--text-lg); text-transform: uppercase; letter-spacing: 0.05em; }

@media (min-width: 768px) {
  h1 { font-size: var(--text-6xl); }
  h2 { font-size: var(--text-5xl); }
}

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

p:last-child {
  margin-bottom: 0;
}

/* Links */
a {
  color: var(--color-gold);
  transition: color var(--transition-fast);
}

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

a:focus-visible {
  outline: 2px solid var(--color-gold);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

/* Selection */
::selection {
  background-color: var(--color-burgundy);
  color: var(--color-text-primary);
}

/* --------------------------------------------
   4. UTILITY CLASSES
   -------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--container-padding);
  padding-right: var(--container-padding);
}

/* Flex & Grid Helpers */
.flex {
  display: flex;
}

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

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

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

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

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

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

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

.grid {
  display: grid;
}

/* Screen Reader Only */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* Text Utilities */
.text-gold {
  color: var(--color-gold);
}

.text-burgundy {
  color: var(--color-burgundy-light);
}

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

.font-heading {
  font-family: var(--font-heading);
}

.font-mono {
  font-family: var(--font-mono);
}

/* --------------------------------------------
   5. COMPONENTS
   -------------------------------------------- */

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  border-radius: var(--radius-none);
  border: 1px solid transparent;
  transition: all var(--transition-base);
  cursor: pointer;
}

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

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

.btn--primary {
  background-color: var(--color-burgundy);
  color: var(--color-text-primary);
  border-color: var(--color-burgundy);
}

.btn--primary:hover:not(:disabled) {
  background-color: var(--color-burgundy-light);
  border-color: var(--color-burgundy-light);
  box-shadow: 0 0 20px rgba(114, 47, 55, 0.4);
}

.btn--secondary {
  background-color: transparent;
  color: var(--color-gold);
  border-color: var(--color-gold);
}

.btn--secondary:hover:not(:disabled) {
  background-color: var(--color-gold);
  color: var(--color-bg-primary);
}

.btn--ghost {
  background-color: transparent;
  color: var(--color-text-secondary);
  border-color: var(--color-border);
}

.btn--ghost:hover:not(:disabled) {
  border-color: var(--color-gold);
  color: var(--color-gold);
}

/* Form Inputs */
.input,
.textarea,
.select {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text-primary);
  font-size: var(--text-base);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.input::placeholder,
.textarea::placeholder {
  color: var(--color-text-muted);
}

.input:hover,
.textarea:hover,
.select:hover {
  border-color: var(--color-border-light);
}

.input:focus,
.textarea:focus,
.select:focus {
  outline: none;
  border-color: var(--color-gold);
  box-shadow: 0 0 0 3px rgba(201, 169, 97, 0.1);
}

.input:disabled,
.textarea:disabled,
.select:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.textarea {
  min-height: 120px;
  resize: vertical;
}

/* Labels */
.label {
  display: block;
  margin-bottom: var(--space-2);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Cards */
.card {
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-6);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-border-light);
}

.card--elevated {
  background-color: var(--color-bg-tertiary);
  border-color: var(--color-border-light);
}

/* Dividers */
.divider {
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent 0%,
    var(--color-border) 20%,
    var(--color-border) 80%,
    transparent 100%
  );
  margin: var(--space-8) 0;
}

.divider--gold {
  background: linear-gradient(
    90deg,
    transparent 0%,
    var(--color-gold-dark) 20%,
    var(--color-gold) 50%,
    var(--color-gold-dark) 80%,
    transparent 100%
  );
  height: 2px;
}

/* Focus styles for accessibility */
:focus:not(:focus-visible) {
  outline: none;
}

/* Scrollbar styling for dark theme */
::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

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

::-webkit-scrollbar-thumb {
  background: var(--color-border-light);
  border-radius: var(--radius-lg);
}

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