/**
 * TinyDeGraaf Design System
 * Shared CSS for all vanilla widgets.
 * Load this file FIRST before any widget-specific CSS.
 *
 * Contains: CSS custom properties, base resets, typography, shared utilities.
 */

/* ─────────────────────────────────────────────────────────
   FONTS
   ───────────────────────────────────────────────────────── */

@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:ital,wght@0,400;0,500;0,600;0,700;1,400;1,500&family=Inter:wght@300;400;500;600&family=Roboto+Mono:wght@300;400;500&display=swap');

/* ─────────────────────────────────────────────────────────
   CSS CUSTOM PROPERTIES (Design Tokens)
   ───────────────────────────────────────────────────────── */

:root {
  /* --- Backgrounds --- */
  --tdg-bg:            #F5F1EB;
  --tdg-bg-card:       #FFFFFF;
  --tdg-bg-muted:      #EAE6DF;
  --tdg-bg-dark:       #121212;
  --tdg-bg-dark-card:  #1E1E1E;
  --tdg-bg-dark-hover: #2A2A2A;

  /* --- Text --- */
  --tdg-text:              #111111;
  --tdg-text-muted:        #666666;
  --tdg-text-faint:        #888888;
  --tdg-text-white:        #FFFFFF;
  --tdg-text-white-dim:    rgba(255, 255, 255, 0.7);  /* hero subtitle, image captions */
  --tdg-text-white-faint:  rgba(255, 255, 255, 0.6);  /* hero location label, secondary on-image text */
  --tdg-text-white-ghost:  rgba(255, 255, 255, 0.5);  /* inactive nav links on dark bg */
  --tdg-text-dark-body:    #D6D6D6;
  --tdg-text-dark-muted:   rgba(214, 214, 214, 0.6);

  /* --- Borders --- */
  --tdg-border:            rgba(17, 17, 17, 0.1);
  --tdg-border-faint:      rgba(17, 17, 17, 0.15);  /* dividers, subtle separators */
  --tdg-border-pill:       rgba(17, 17, 17, 0.25);  /* category pill border */
  --tdg-border-dark:       rgba(214, 214, 214, 0.1);
  --tdg-border-dark-btn:   rgba(214, 214, 214, 0.3);
  --tdg-border-dark-btn-dim: rgba(214, 214, 214, 0.15); /* disabled button border on dark bg */

  /* --- Overlays --- */
  --tdg-overlay:       rgba(0, 0, 0, 0.15);
  --tdg-overlay-mid:   rgba(0, 0, 0, 0.35);
  --tdg-overlay-dark:  rgba(0, 0, 0, 0.45);
  --tdg-overlay-hero:  linear-gradient(to bottom, rgba(0,0,0,0.15) 0%, rgba(0,0,0,0.50) 60%, rgba(0,0,0,0.65) 100%);

  /* --- Typography: Font Families --- */
  --tdg-font-serif:  'Playfair Display', Georgia, 'Times New Roman', serif;
  --tdg-font-mono:   'Roboto Mono', 'Courier New', monospace;
  --tdg-font-sans:   'Inter', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;

  /* --- Typography: Font Sizes --- */
  --tdg-text-xs:    0.625rem;    /* 10px */
  --tdg-text-sm:    0.6875rem;   /* 11px */
  --tdg-text-base:  0.75rem;     /* 12px */
  --tdg-text-body:  0.875rem;    /* 14px */
  --tdg-text-md:    0.9375rem;   /* 15px */
  --tdg-text-lg:    1rem;        /* 16px */
  --tdg-text-xl:    1.125rem;    /* 18px */

  /* --- Typography: Letter Spacing --- */
  --tdg-tracking-logo:     0.2em;
  --tdg-tracking-nav:      0.15em;
  --tdg-tracking-wide:     2.4px;
  --tdg-tracking-wider:    3px;
  --tdg-tracking-widest:   3.6px;
  --tdg-tracking-label:    4.2px;

  /* --- Typography: Line Heights --- */
  --tdg-leading-tight:   1.05;
  --tdg-leading-snug:    1.25;
  --tdg-leading-normal:  1.5;
  --tdg-leading-body:    1.85;
  --tdg-leading-loose:   1.9;

  /* --- Spacing --- */
  --tdg-space-1:   0.25rem;
  --tdg-space-2:   0.5rem;
  --tdg-space-3:   0.75rem;
  --tdg-space-4:   1rem;
  --tdg-space-5:   1.25rem;
  --tdg-space-6:   1.5rem;
  --tdg-space-8:   2rem;
  --tdg-space-10:  2.5rem;
  --tdg-space-12:  3rem;
  --tdg-space-16:  4rem;
  --tdg-space-20:  5rem;
  --tdg-space-24:  6rem;

  /* --- Border Radius --- */
  --tdg-radius-sm:    6px;
  --tdg-radius-md:    12px;
  --tdg-radius-lg:    20px;
  --tdg-radius-xl:    30px;
  --tdg-radius-full:  9999px;

  /* --- Shadows --- */
  --tdg-shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --tdg-shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
  --tdg-shadow-lg: 0 10px 20px rgba(0, 0, 0, 0.1);
  --tdg-shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.15);

  /* --- Transitions --- */
  --tdg-transition-fast:   0.2s ease;
  --tdg-transition-normal: 0.3s ease;
  --tdg-transition-slow:   0.7s ease;

  /* --- Layout --- */
  --tdg-max-width:  1440px;
  --tdg-px-sm:      1rem;       /* Mobile page padding */
  --tdg-px-md:      2rem;       /* Tablet page padding */
  --tdg-px-lg:      4rem;       /* Desktop page padding (64px) */
}

/* ─────────────────────────────────────────────────────────
   BASE RESET
   ───────────────────────────────────────────────────────── */

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  background-color: var(--tdg-bg);
  color: var(--tdg-text);
  font-family: var(--tdg-font-sans);
  line-height: var(--tdg-leading-normal);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

button {
  cursor: pointer;
  border: none;
  background: none;
  font-family: inherit;
}

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

/* ─────────────────────────────────────────────────────────
   UTILITY CLASSES
   ───────────────────────────────────────────────────────── */

/* Container */
.tdg-container {
  width: 100%;
  max-width: var(--tdg-max-width);
  margin-inline: auto;
  padding-inline: var(--tdg-px-sm);
}

@media (min-width: 640px) {
  .tdg-container {
    padding-inline: var(--tdg-px-md);
  }
}

@media (min-width: 1024px) {
  .tdg-container {
    padding-inline: var(--tdg-px-lg);
  }
}

/* Section label (uppercase mono tag with underline) */
.tdg-section-label {
  font-family: var(--tdg-font-mono);
  font-size: var(--tdg-text-base);
  letter-spacing: var(--tdg-tracking-label);
  text-transform: uppercase;
  color: var(--tdg-text);
  border-bottom: 1px solid var(--tdg-text);
  padding-bottom: 0.25rem;
  display: inline-block;
}

/* Ghost button (white outline, pill) — light context */
.tdg-btn-ghost-light {
  font-family: var(--tdg-font-mono);
  font-size: var(--tdg-text-base);
  font-weight: 500;
  letter-spacing: 3px;
  text-transform: uppercase;
  border: 1px solid var(--tdg-text-white);
  color: var(--tdg-text-white);
  border-radius: var(--tdg-radius-full);
  padding: 0.75rem 2rem;
  background: transparent;
  cursor: pointer;
  transition: background var(--tdg-transition-fast), color var(--tdg-transition-fast);
  display: inline-flex;
  align-items: center;
}

.tdg-btn-ghost-light:hover {
  background: var(--tdg-text-white);
  color: var(--tdg-text);
}

/* Ghost button — dark context */
.tdg-btn-ghost-dark {
  font-family: var(--tdg-font-mono);
  font-size: var(--tdg-text-base);
  font-weight: 500;
  letter-spacing: var(--tdg-tracking-wide);
  text-transform: uppercase;
  border: 1px solid var(--tdg-border-dark-btn);
  color: var(--tdg-text-dark-body);
  border-radius: var(--tdg-radius-full);
  padding: 0.625rem 1.5rem;
  background: transparent;
  cursor: pointer;
  transition: background var(--tdg-transition-fast), color var(--tdg-transition-fast);
  display: inline-flex;
  align-items: center;
}

.tdg-btn-ghost-dark:hover {
  background: var(--tdg-text-dark-body);
  color: var(--tdg-bg-dark);
}

.tdg-btn-ghost-dark:disabled {
  border-color: var(--tdg-border-dark-btn-dim);
  color: var(--tdg-text-dark-muted);
  cursor: not-allowed;
}

/* Text link underline (inline navigation) */
.tdg-link-underline {
  font-family: var(--tdg-font-mono);
  font-size: var(--tdg-text-base);
  font-weight: 500;
  letter-spacing: var(--tdg-tracking-wide);
  text-transform: uppercase;
  text-decoration: underline;
  text-underline-offset: 4px;
  color: var(--tdg-text-muted);
  cursor: pointer;
  transition: color var(--tdg-transition-fast);
  background: none;
  border: none;
  padding: 0;
}

.tdg-link-underline:hover {
  color: var(--tdg-text);
}

/* Dark variant */
.tdg-link-underline--dark {
  color: var(--tdg-text-dark-body);
}

.tdg-link-underline--dark:hover {
  color: var(--tdg-text-white);
}

/* Image card (image + overlay + content) */
.tdg-img-card {
  position: relative;
  overflow: hidden;
  display: block;
}

.tdg-img-card__img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--tdg-transition-slow);
}

.tdg-img-card:hover .tdg-img-card__img {
  transform: scale(1.03);
}

.tdg-img-card__overlay {
  position: absolute;
  inset: 0;
  background: var(--tdg-overlay-mid);
  transition: background var(--tdg-transition-normal);
}

.tdg-img-card:hover .tdg-img-card__overlay {
  background: var(--tdg-overlay-dark);
}

/* Horizontal divider */
.tdg-divider {
  width: 100%;
  height: 1px;
  background-color: var(--tdg-border);
}

.tdg-divider--dark {
  background-color: var(--tdg-border-dark);
}

/* Accessibility: visually hidden */
.tdg-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;
}

/* Focus visible */
:focus-visible {
  outline: 2px solid var(--tdg-text);
  outline-offset: 2px;
}

/* Text selection */
::selection {
  background: var(--tdg-text);
  color: var(--tdg-bg);
}

/* 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;
  }
}