/* Delhi Atlas — shared design system
   Warm paper, ink text, one deep teal accent. Hairlines, one soft shadow. */

:root {
  --paper:      #F4EEE1;
  --paper-warm: #EFE7D6;
  --panel:      #FBF7EE;
  --panel-2:    #F7F1E4;

  --ink:        #1B1915;
  --ink-2:      #4C463B;
  --ink-3:      #857D6D;

  --teal:       #0E5F5A;
  --teal-deep:  #0A4642;
  --teal-tint:  #E2ECE9;

  /* UNESCO World Heritage — red-sandstone orange, the fort palette */
  --unesco:      #B4552A;
  --unesco-deep: #8E3F1C;
  --unesco-tint: #F7E6DA;

  /* One pigment per category, taken from what these buildings are made of.
     All tested at 4.5:1 or better on paper, so they can carry small text. */
  --cat-forts:     #A44A3A;   /* red sandstone   */
  --cat-tombs:     #40598C;   /* Mughal blue tile */
  --cat-sacred:    #7C601A;   /* gilded dome      */
  --cat-gardens:   #3F6A39;   /* char bagh green  */
  --cat-landmarks: #74496B;   /* Delhi quartzite  */
  --cat-museums:   #4B4E96;   /* indigo cloth     */

  /* the default accent, overridden per element by the classes below */
  --cat: var(--teal);

  --line:       rgba(27, 25, 21, 0.14);
  --line-soft:  rgba(27, 25, 21, 0.08);
  --shadow:     0 10px 30px rgba(27, 25, 21, 0.14);

  --r-lg: 14px;
  --r-md: 10px;
  --r-sm: 6px;

  --serif: "Spectral", "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  --sans:  "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;

  --header-h: 60px;
  --panel-w: 348px;
}

.cat-forts     { --cat: var(--cat-forts); }
.cat-tombs     { --cat: var(--cat-tombs); }
.cat-sacred    { --cat: var(--cat-sacred); }
.cat-gardens   { --cat: var(--cat-gardens); }
.cat-landmarks { --cat: var(--cat-landmarks); }
.cat-museums   { --cat: var(--cat-museums); }

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -webkit-text-size-adjust: 100%;
}

a { color: var(--teal); }

:focus-visible {
  outline: 2px solid var(--teal);
  outline-offset: 2px;
  border-radius: 3px;
}

.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;
}

/* ---------- wordmark ---------- */

.wordmark {
  display: flex;
  align-items: baseline;
  gap: 10px;
  text-decoration: none;
  color: inherit;
}
.wordmark__name {
  font-family: var(--serif);
  font-weight: 600;
  font-size: 19px;
  letter-spacing: 0.01em;
  color: var(--ink);
}
.wordmark__rule {
  width: 16px;
  height: 1px;
  background: var(--line);
  align-self: center;
}
.wordmark__tag {
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-3);
  white-space: nowrap;
}

/* ---------- shared bits ---------- */

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 10.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-3);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 3px 9px;
  white-space: nowrap;
}
.tag--cat {
  color: var(--cat);
  border-color: color-mix(in srgb, var(--cat) 38%, transparent);
  background: color-mix(in srgb, var(--cat) 8%, var(--panel));
}

.tag--unesco {
  color: var(--unesco-deep);
  border-color: rgba(180, 85, 42, 0.38);
  background: var(--unesco-tint);
}

.meta-line {
  font-size: 12px;
  color: var(--ink-3);
  letter-spacing: 0.02em;
}
.meta-line b { font-weight: 500; color: var(--ink-2); }

.btn {
  appearance: none;
  font-family: var(--sans);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.01em;
  border-radius: var(--r-sm);
  border: 1px solid var(--line);
  background: transparent;
  color: var(--ink);
  padding: 10px 14px;
  min-height: 44px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  text-decoration: none;
  transition: background-color .15s ease, border-color .15s ease, color .15s ease;
}
.btn:hover { background: var(--panel-2); }
.btn--primary {
  background: var(--cat, var(--teal));
  border-color: var(--cat, var(--teal));
  color: #FCFAF5;
}
.btn--primary:hover { filter: brightness(0.88); }