/* ==========================================================================
   GRAND VELVET ROOM — BASE FOUNDATION
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Design Tokens
   -------------------------------------------------------------------------- */
:root {
  /* Color tokens */
  --color-velvet-burgundy: #4A0E1C;
  --color-midnight-charcoal: #1A1A1A;
  --color-warm-ivory: #F5EFE6;
  --color-antique-brass: #B08D57;
  --color-forest-green: #1E3A2B;
  --color-espresso-brown: #3E2723;
  --color-midnight-charcoal-soft: #2A2A2A;
  --color-warm-ivory-dim: #C9BFAE;

  /* Semantic color assignments */
  --color-primary: var(--color-velvet-burgundy);
  --color-background: var(--color-midnight-charcoal);
  --color-surface: var(--color-midnight-charcoal-soft);
  --color-surface-alt: var(--color-forest-green);
  --color-surface-footer: var(--color-espresso-brown);
  --color-text: var(--color-warm-ivory);
  --color-text-muted: var(--color-warm-ivory-dim);
  --color-accent: var(--color-antique-brass);
  --color-border: rgba(176, 141, 87, 0.2);
  --color-focus: var(--color-antique-brass);

  /* Typography */
  --font-heading: "Playfair Display", Georgia, "Times New Roman", serif;
  --font-body: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;

  /* Type scale */
  --text-display: clamp(2.75rem, 5vw, 4.5rem);      /* 44–72px */
  --text-h1: clamp(2.25rem, 4vw, 3.5rem);           /* 36–56px */
  --text-h2: clamp(1.75rem, 3vw, 2.5rem);           /* 28–40px */
  --text-h3: clamp(1.375rem, 2vw, 1.75rem);         /* 22–28px */
  --text-h4: 1.25rem;                                /* 20px */
  --text-body-large: 1.125rem;                       /* 18px */
  --text-body: 1rem;                                 /* 16px */
  --text-caption: 0.875rem;                          /* 14px */
  --text-overline: 0.75rem;                          /* 12px */

  --leading-display: 1.1;
  --leading-h1: 1.2;
  --leading-h2: 1.2;
  --leading-h3: 1.3;
  --leading-h4: 1.4;
  --leading-body: 1.6;
  --leading-caption: 1.4;
  --leading-overline: 1.4;

  --tracking-overline: 0.15em;

  /* Spacing scale */
  --space-4xs: 0.25rem;   /* 4px */
  --space-3xs: 0.5rem;    /* 8px */
  --space-2xs: 1rem;      /* 16px */
  --space-xs: 1.5rem;     /* 24px */
  --space-sm: 2rem;       /* 32px */
  --space-md: 3rem;       /* 48px */
  --space-lg: 4rem;       /* 64px */
  --space-xl: 6rem;       /* 96px */
  --space-2xl: 8rem;      /* 128px */

  /* Containers */
  --container-max: 1280px;
  --container-padding: var(--space-2xs);
  --section-padding-desktop: var(--space-xl);
  --section-padding-tablet: var(--space-lg);
  --section-padding-mobile: var(--space-md);
  --card-padding: var(--space-sm);

  /* Surfaces */
  --surface-card: var(--color-midnight-charcoal-soft);
  --surface-elevated: var(--color-midnight-charcoal-soft);
  --surface-overlay: rgba(26, 26, 26, 0.8);

  /* Borders */
  --border-width: 1px;
  --border-style: solid;
  --border-color: var(--color-border);
  --border: var(--border-width) var(--border-style) var(--border-color);
  --border-focus: 2px solid var(--color-focus);

  /* Radius scale */
  --radius-none: 0px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;

  /* Shadows */
  --shadow-soft: 0 4px 20px rgba(0, 0, 0, 0.35);
  --shadow-ambient: 0 8px 40px rgba(0, 0, 0, 0.45);
  --shadow-card-hover: 0 12px 48px rgba(0, 0, 0, 0.55);

  /* Transitions */
  --transition-color: 200ms ease;
  --transition-transform: 300ms ease;
  --transition-all: 200ms ease;

  /* Focus */
  --focus-outline: 2px solid var(--color-focus);
  --focus-offset: 2px;
}

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

html {
  -webkit-text-size-adjust: 100%;
  -moz-tab-size: 4;
  tab-size: 4;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background-color: var(--color-background);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: var(--text-body);
  line-height: var(--leading-body);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

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

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

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

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

ul,
ol {
  list-style: none;
}

table {
  border-collapse: collapse;
  border-spacing: 0;
}

blockquote,
q {
  quotes: none;
}

blockquote::before,
blockquote::after,
q::before,
q::after {
  content: "";
  content: none;
}

hr {
  border: none;
  border-top: var(--border);
  margin: var(--space-md) 0;
}

address {
  font-style: normal;
}

/* --------------------------------------------------------------------------
   3. Document Typography
   -------------------------------------------------------------------------- */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-heading);
  font-weight: 600;
  color: var(--color-text);
  line-height: var(--leading-h2);
  margin-block-end: var(--space-2xs);
}

h1 {
  font-size: var(--text-h1);
  line-height: var(--leading-h1);
  margin-block-end: var(--space-xs);
}

h2 {
  font-size: var(--text-h2);
  line-height: var(--leading-h2);
  margin-block-end: var(--space-2xs);
}

h3 {
  font-size: var(--text-h3);
  line-height: var(--leading-h3);
  margin-block-end: var(--space-3xs);
}

h4 {
  font-size: var(--text-h4);
  line-height: var(--leading-h4);
  margin-block-end: var(--space-3xs);
}

h5 {
  font-size: var(--text-body-large);
  line-height: var(--leading-h4);
  margin-block-end: var(--space-3xs);
}

h6 {
  font-size: var(--text-body);
  line-height: var(--leading-h4);
  margin-block-end: var(--space-3xs);
}

p {
  font-size: var(--text-body);
  line-height: var(--leading-body);
  margin-block-end: var(--space-2xs);
}

p:last-child {
  margin-block-end: 0;
}

strong,
b {
  font-weight: 600;
}

em,
i {
  font-style: italic;
}

small {
  font-size: var(--text-caption);
  line-height: var(--leading-caption);
}

.overline {
  font-size: var(--text-overline);
  line-height: var(--leading-overline);
  text-transform: uppercase;
  letter-spacing: var(--tracking-overline);
  color: var(--color-accent);
  margin-block-end: var(--space-3xs);
}

/* --------------------------------------------------------------------------
   4. Media Defaults
   -------------------------------------------------------------------------- */
img {
  border-radius: var(--radius-md);
}

figure {
  margin-block-end: var(--space-2xs);
}

figcaption {
  font-size: var(--text-caption);
  line-height: var(--leading-caption);
  color: var(--color-text-muted);
  margin-block-start: var(--space-3xs);
  text-align: center;
}

/* --------------------------------------------------------------------------
   5. Form Defaults
   -------------------------------------------------------------------------- */
label {
  display: block;
  font-size: var(--text-caption);
  line-height: var(--leading-caption);
  color: var(--color-text-muted);
  margin-block-end: var(--space-4xs);
}

input,
textarea,
select {
  width: 100%;
  background-color: var(--color-midnight-charcoal);
  color: var(--color-text);
  border: var(--border);
  border-radius: var(--radius-sm);
  padding: var(--space-3xs) var(--space-2xs);
  font-size: var(--text-body);
  line-height: var(--leading-body);
  transition: border-color var(--transition-color), box-shadow var(--transition-color);
}

input::placeholder,
textarea::placeholder {
  color: var(--color-text-muted);
  opacity: 0.7;
}

input:focus,
textarea:focus,
select:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 1px var(--color-accent);
}

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

select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%23B08D57' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--space-2xs) center;
  padding-inline-end: var(--space-sm);
}

fieldset {
  border: var(--border);
  border-radius: var(--radius-sm);
  padding: var(--space-2xs);
  margin-block-end: var(--space-2xs);
}

legend {
  font-size: var(--text-caption);
  color: var(--color-text-muted);
  padding: 0 var(--space-3xs);
}

/* --------------------------------------------------------------------------
   6. Containers
   -------------------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-padding);
}

.section {
  padding-block: var(--section-padding-desktop);
}

.section--tight {
  padding-block: var(--space-lg);
}

.section--relaxed {
  padding-block: var(--space-2xl);
}

/* --------------------------------------------------------------------------
   7. Reusable Primitives
   -------------------------------------------------------------------------- */

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-3xs);
  font-family: var(--font-body);
  font-size: var(--text-body);
  font-weight: 500;
  line-height: 1.2;
  padding: var(--space-3xs) var(--space-xs);
  border-radius: var(--radius-sm);
  border: var(--border);
  cursor: pointer;
  transition: background-color var(--transition-color), border-color var(--transition-color), color var(--transition-color);
  min-height: 48px;
  text-align: center;
  white-space: nowrap;
}

.btn:focus-visible {
  outline: var(--focus-outline);
  outline-offset: var(--focus-offset);
}

.btn--primary {
  background-color: var(--color-velvet-burgundy);
  border-color: var(--color-velvet-burgundy);
  color: var(--color-warm-ivory);
}

.btn--primary:hover {
  background-color: #5A1222;
  border-color: #5A1222;
}

.btn--accent {
  background-color: var(--color-antique-brass);
  border-color: var(--color-antique-brass);
  color: var(--color-midnight-charcoal);
}

.btn--accent:hover {
  background-color: #C49E68;
  border-color: #C49E68;
}

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

.btn--outline:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

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

.btn--ghost:hover {
  color: var(--color-accent);
}

/* Cards */
.card {
  background-color: var(--surface-card);
  border: var(--border);
  border-radius: var(--radius-md);
  padding: var(--card-padding);
  transition: transform var(--transition-transform), box-shadow var(--transition-transform);
}

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

.card > :last-child {
  margin-block-end: 0;
}

/* Panels */
.panel {
  background-color: var(--surface-elevated);
  border: var(--border);
  border-radius: var(--radius-md);
  padding: var(--card-padding);
}

.panel > :last-child {
  margin-block-end: 0;
}

/* Overline label */
.overline {
  display: block;
  font-size: var(--text-overline);
  line-height: var(--leading-overline);
  text-transform: uppercase;
  letter-spacing: var(--tracking-overline);
  color: var(--color-accent);
  margin-block-end: var(--space-3xs);
}

/* Divider */
.divider {
  border: none;
  border-top: var(--border);
  margin-block: var(--space-md);
}

.divider--accent {
  border-top-color: var(--color-accent);
  opacity: 0.5;
}

/* Image treatment */
.img-cinematic {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
}

.img-cinematic::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(26, 26, 26, 0.7) 0%, rgba(26, 26, 26, 0.2) 40%, transparent 70%);
  pointer-events: none;
  border-radius: inherit;
}

.img-cinematic img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: inherit;
}

/* Focus visible global */
:focus-visible {
  outline: var(--focus-outline);
  outline-offset: var(--focus-offset);
}

/* 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;
}

/* Skip link */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-2xs);
  z-index: 9999;
  background-color: var(--color-accent);
  color: var(--color-midnight-charcoal);
  padding: var(--space-3xs) var(--space-2xs);
  border-radius: var(--radius-sm);
  font-weight: 600;
  transition: top 200ms ease;
}

.skip-link:focus {
  top: var(--space-2xs);
}

/* --------------------------------------------------------------------------
   8. Responsive Adjustments
   -------------------------------------------------------------------------- */
@media (max-width: 1024px) {
  .section {
    padding-block: var(--section-padding-tablet);
  }

  .section--tight {
    padding-block: var(--space-md);
  }

  .section--relaxed {
    padding-block: var(--space-xl);
  }
}

@media (max-width: 768px) {
  .section {
    padding-block: var(--section-padding-mobile);
  }

  .section--tight {
    padding-block: var(--space-sm);
  }

  .section--relaxed {
    padding-block: var(--space-lg);
  }

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

  .panel {
    padding: var(--space-xs);
  }

  .btn {
    padding: var(--space-3xs) var(--space-2xs);
  }
}

@media (max-width: 480px) {
  .container {
    padding-inline: var(--space-3xs);
  }

  .card {
    padding: var(--space-2xs);
  }

  .panel {
    padding: var(--space-2xs);
  }
}

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

  .card:hover {
    transform: none;
  }
}