/* ==========================================================================
   Variables
   ========================================================================== */
:root {
  /* Colors */
  --color-bg: #0f1115; /* deep charcoal, photographic backdrop */
  --color-bg-alt: #151820;
  --color-surface: #1c2028;
  --color-surface-alt: #262b35;

  --color-text: #f7f7f7;
  --color-text-muted: #a7acb8;
  --color-border-subtle: #2e3440;

  --color-primary: #f5c26b; /* warm accent, reminiscent of studio light */
  --color-primary-soft: rgba(245, 194, 107, 0.14);

  --color-success: #4bbf81;
  --color-warning: #f6c453;
  --color-danger: #e05353;

  --gray-50: #f7f7f8;
  --gray-100: #e2e3e7;
  --gray-200: #c7cad3;
  --gray-300: #a7acb8;
  --gray-400: #8a90a0;
  --gray-500: #6c7282;
  --gray-600: #555b68;
  --gray-700: #3c4150;
  --gray-800: #262b35;
  --gray-900: #151820;

  /* Typography */
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", sans-serif;
  --font-serif: "Georgia", "Times New Roman", serif;
  --font-mono: "SF Mono", Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;

  --font-size-xs: 0.75rem;   /* 12px */
  --font-size-sm: 0.875rem;  /* 14px */
  --font-size-base: 1rem;    /* 16px */
  --font-size-lg: 1.125rem;  /* 18px */
  --font-size-xl: 1.25rem;   /* 20px */
  --font-size-2xl: 1.5rem;   /* 24px */
  --font-size-3xl: 1.875rem; /* 30px */
  --font-size-4xl: 2.25rem;  /* 36px */
  --font-size-5xl: 3rem;     /* 48px */

  --line-height-tight: 1.2;
  --line-height-snug: 1.35;
  --line-height-normal: 1.6;
  --line-height-relaxed: 1.8;

  /* Spacing scale (0–96px) */
  --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 */
  --space-24: 6rem;    /* 96px */

  /* Radii */
  --radius-xs: 2px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 14px;
  --radius-xl: 24px;
  --radius-full: 999px;

  /* Shadows (subtle, photography-friendly) */
  --shadow-sm: 0 6px 18px rgba(0, 0, 0, 0.25);
  --shadow-md: 0 14px 45px rgba(0, 0, 0, 0.35);
  --shadow-soft: 0 40px 80px rgba(0, 0, 0, 0.55);

  /* Transitions */
  --transition-fast: 120ms ease-out;
  --transition-base: 200ms ease-out;
  --transition-slow: 320ms ease;
}

@media (prefers-color-scheme: light) {
  :root {
    --color-bg: #f6f6f7;
    --color-bg-alt: #f0f1f3;
    --color-surface: #ffffff;
    --color-surface-alt: #f4f5f7;

    --color-text: #151820;
    --color-text-muted: #6c7282;
    --color-border-subtle: #d6d7dd;

    --shadow-sm: 0 4px 16px rgba(15, 16, 23, 0.08);
    --shadow-md: 0 18px 50px rgba(15, 16, 23, 0.12);
    --shadow-soft: 0 40px 90px rgba(15, 16, 23, 0.18);
  }
}

/* Respect reduced motion */
@media (prefers-reduced-motion: reduce) {
  :root {
    --transition-fast: 0ms;
    --transition-base: 0ms;
    --transition-slow: 0ms;
  }
  *, *::before, *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}

/* ==========================================================================
   Reset / Normalize
   ========================================================================== */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body,
h1,
h2,
h3,
h4,
h5,
h6,
p,
figure,
blockquote,
dl,
dd,
ul,
ol,
fieldset,
legend,
pre {
  margin: 0;
  padding: 0;
}

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

body {
  min-height: 100vh;
}

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

img {
  height: auto;
}

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

button {
  border: none;
  background: none;
  padding: 0;
}

ul,
ol {
  list-style: none;
}

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

fieldset {
  border: 0;
}

/* ==========================================================================
   Base
   ========================================================================== */
body {
  font-family: var(--font-sans);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  background-color: var(--color-bg);
  color: var(--color-text);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 600;
  line-height: var(--line-height-tight);
  letter-spacing: 0.02em;
  color: var(--color-text);
}

h1 {
  font-size: var(--font-size-5xl);
  margin-bottom: var(--space-4);
}

h2 {
  font-size: var(--font-size-4xl);
  margin-bottom: var(--space-3);
}

h3 {
  font-size: var(--font-size-3xl);
  margin-bottom: var(--space-3);
}

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

h5 {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-2);
}

h6 {
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-1);
}

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

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

a {
  position: relative;
  transition: color var(--transition-base), opacity var(--transition-fast);
}

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

a:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

small {
  font-size: var(--font-size-xs);
}

code,
pre {
  font-family: var(--font-mono);
}

hr {
  border: 0;
  border-top: 1px solid var(--color-border-subtle);
  margin: var(--space-8) 0;
}

/* ==========================================================================
   Utilities
   ========================================================================== */

/* Layout: container */
.container {
  width: 100%;
  max-width: 1120px;
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-4);
  padding-right: var(--space-4);
}

@media (min-width: 1200px) {
  .container {
    max-width: 1200px;
  }
}

/* Flex helpers */
.flex {
  display: flex;
}

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

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

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

.flex-wrap {
  flex-wrap: wrap;
}

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

.gap-2 {
  gap: var(--space-2);
}

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

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

/* Grid helpers */
.grid {
  display: grid;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-6);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-6);
}

@media (max-width: 768px) {
  .grid-2,
  .grid-3 {
    grid-template-columns: minmax(0, 1fr);
  }
}

/* Visually hidden (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: 0;
}

/* Alignment / spacing helpers (minimal set) */
.text-center {
  text-align: center;
}

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

.mt-0 { margin-top: 0; }
.mt-4 { margin-top: var(--space-4); }
.mt-8 { margin-top: var(--space-8); }
.mb-0 { margin-bottom: 0; }
.mb-4 { margin-bottom: var(--space-4); }
.mb-8 { margin-bottom: var(--space-8); }

.py-section {
  padding-top: var(--space-16);
  padding-bottom: var(--space-16);
}

@media (max-width: 768px) {
  .py-section {
    padding-top: var(--space-12);
    padding-bottom: var(--space-12);
  }
}

/* ==========================================================================
   Components
   ========================================================================== */

/* Buttons */
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.7rem 1.5rem;
  border-radius: var(--radius-full);
  border: 1px solid transparent;
  font-size: var(--font-size-sm);
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  background-color: var(--color-primary);
  color: #121317;
  cursor: pointer;
  transition:
    background-color var(--transition-base),
    color var(--transition-base),
    box-shadow var(--transition-base),
    transform var(--transition-fast),
    border-color var(--transition-base),
    opacity var(--transition-fast);
}

.button:hover {
  background-color: #ffd48f;
  box-shadow: var(--shadow-sm);
  transform: translateY(-1px);
}

.button:active {
  transform: translateY(0);
  box-shadow: none;
}

.button:disabled,
.button[aria-disabled="true"] {
  opacity: 0.5;
  cursor: not-allowed;
  box-shadow: none;
}

.button--ghost {
  background-color: transparent;
  border-color: var(--color-border-subtle);
  color: var(--color-text);
}

.button--ghost:hover {
  background-color: var(--color-primary-soft);
  border-color: var(--color-primary);
}

.button--text {
  padding: 0;
  border-radius: 0;
  border: 0;
  background: none;
  text-transform: none;
  letter-spacing: 0;
  font-size: var(--font-size-base);
}

.button--text:hover {
  color: var(--color-primary);
  box-shadow: none;
  transform: none;
}

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

/* Inputs, textareas, selects */
.input,
.textarea,
.select {
  width: 100%;
  padding: 0.75rem 0.9rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border-subtle);
  background-color: rgba(15, 17, 21, 0.85);
  color: var(--color-text);
  font-size: var(--font-size-sm);
  line-height: 1.4;
  outline: none;
  transition:
    border-color var(--transition-base),
    box-shadow var(--transition-base),
    background-color var(--transition-base);
}

.input::placeholder,
.textarea::placeholder {
  color: var(--gray-400);
}

.input:focus,
.textarea:focus,
.select:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 1px var(--color-primary-soft);
  background-color: rgba(15, 17, 21, 0.95);
}

.input[disabled],
.textarea[disabled],
.select[disabled] {
  opacity: 0.5;
  cursor: not-allowed;
}

.textarea {
  min-height: 140px;
  resize: vertical;
}

label {
  display: block;
  margin-bottom: var(--space-2);
  font-size: var(--font-size-sm);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--gray-300);
}

.form-field {
  margin-bottom: var(--space-4);
}

.form-hint {
  margin-top: var(--space-1);
  font-size: var(--font-size-xs);
  color: var(--gray-400);
}

.form-error {
  margin-top: var(--space-1);
  font-size: var(--font-size-xs);
  color: var(--color-danger);
}

/* Card */
.card {
  background-color: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.02);
  padding: var(--space-6);
  box-shadow: var(--shadow-sm);
}

.card--elevated {
  box-shadow: var(--shadow-md);
}

.card__header {
  margin-bottom: var(--space-4);
}

.card__title {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-1);
}

.card__subtitle {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.card__body {
  font-size: var(--font-size-sm);
}

/* Focus-visible global enhancement */
:focus {
  outline: none;
}

:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
}

/* Helper: subtle overlay for image-heavy sections */
.surface-soft {
  background: radial-gradient(circle at top left, rgba(255, 255, 255, 0.08), transparent 55%),
              radial-gradient(circle at bottom right, rgba(0, 0, 0, 0.45), transparent 60%),
              var(--color-bg-alt);
}

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

/* Helper: pill label for categories / badges */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.1rem 0.6rem;
  border-radius: var(--radius-full);
  border: 1px solid rgba(255, 255, 255, 0.09);
  font-size: var(--font-size-xs);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gray-300);
}

.badge--accent {
  border-color: rgba(245, 194, 107, 0.4);
  color: var(--color-primary);
}