/* ==========================================================================
   Exhibition product catalog — single stylesheet, no dependencies.
   Light + dark, RTL + LTR.
   ========================================================================== */

@font-face {
  font-family: "Vazirmatn";
  src: url("../fonts/Vazirmatn-Regular.woff2") format("woff2");
  font-weight: 400;
  font-display: swap;
}
@font-face {
  font-family: "Vazirmatn";
  src: url("../fonts/Vazirmatn-Medium.woff2") format("woff2");
  font-weight: 500;
  font-display: swap;
}
@font-face {
  font-family: "Vazirmatn";
  src: url("../fonts/Vazirmatn-Bold.woff2") format("woff2");
  font-weight: 700;
  font-display: swap;
}

:root {
  --bg: #f6f7fb;
  --surface: #ffffff;
  --surface-2: #f0f2f8;
  --border: #e2e5ee;
  --text: #131726;
  --text-dim: #5c6377;
  --accent: #3b5bdb;
  --accent-text: #ffffff;
  --accent-soft: #eaeeff;
  --shadow: 0 1px 2px rgb(16 24 40 / 6%), 0 8px 24px -12px rgb(16 24 40 / 18%);
  --radius: 14px;
  --wrap: 1120px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b1020;
    --surface: #141a2e;
    --surface-2: #1b223a;
    --border: #262e48;
    --text: #eef1f8;
    --text-dim: #98a1bb;
    --accent: #7d95ff;
    --accent-text: #0b1020;
    --accent-soft: #1e2647;
    --shadow: 0 1px 2px rgb(0 0 0 / 40%), 0 10px 28px -14px rgb(0 0 0 / 70%);
  }
}

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

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Vazirmatn", "Segoe UI", system-ui, -apple-system, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

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

.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: 20px;
}

.skip-link {
  position: absolute;
  inset-inline-start: -9999px;
  top: 8px;
  z-index: 20;
  background: var(--accent);
  color: var(--accent-text);
  padding: 10px 16px;
  border-radius: 8px;
  text-decoration: none;
}
.skip-link:focus {
  inset-inline-start: 12px;
}

/* --- Header --------------------------------------------------------------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 66px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.brand-logo {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  object-fit: contain;
  flex: none;
}

.brand-text {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.brand-name {
  font-weight: 700;
  font-size: 1.02rem;
  line-height: 1.35;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.brand-tagline {
  font-size: 0.78rem;
  color: var(--text-dim);
  line-height: 1.35;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.lang-toggle {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  flex: none;
  padding: 8px 14px;
  font: inherit;
  font-size: 0.86rem;
  font-weight: 500;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 999px;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s;
}
.lang-toggle:hover {
  background: var(--surface-2);
  border-color: var(--accent);
}

/* --- Hero ----------------------------------------------------------------- */

.hero {
  padding-block: 40px 26px;
}

.hero h1 {
  margin: 0 0 6px;
  font-size: clamp(1.6rem, 1.1rem + 2.2vw, 2.4rem);
  line-height: 1.3;
  letter-spacing: -0.01em;
}

.hero-intro {
  margin: 0 0 22px;
  color: var(--text-dim);
  max-width: 62ch;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* --- Buttons -------------------------------------------------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 18px;
  font-size: 0.92rem;
  font-weight: 500;
  border-radius: 10px;
  border: 1px solid transparent;
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.1s, background 0.15s, border-color 0.15s;
}
.btn:active {
  transform: translateY(1px);
}
.btn svg {
  flex: none;
}

.btn-primary {
  background: var(--accent);
  color: var(--accent-text);
}
.btn-primary:hover {
  background: color-mix(in srgb, var(--accent) 86%, var(--text));
}

.btn-ghost {
  background: var(--surface);
  color: var(--text);
  border-color: var(--border);
}
.btn-ghost:hover {
  background: var(--surface-2);
  border-color: var(--accent);
}

/* --- Toolbar -------------------------------------------------------------- */

.toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  padding-block: 8px 20px;
}

.search-box {
  position: relative;
  display: flex;
  align-items: center;
  flex: 1 1 240px;
  max-width: 340px;
}
.search-box svg {
  position: absolute;
  inset-inline-start: 13px;
  color: var(--text-dim);
  pointer-events: none;
}
.search-box input {
  width: 100%;
  font: inherit;
  font-size: 0.92rem;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 14px;
  padding-inline-start: 40px;
}
.search-box input:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
  border-color: transparent;
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.chip {
  font: inherit;
  font-size: 0.84rem;
  padding: 7px 14px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-dim);
  cursor: pointer;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
}
.chip:hover {
  border-color: var(--accent);
}
.chip[aria-pressed="true"] {
  background: var(--accent-soft);
  border-color: var(--accent);
  color: var(--accent);
  font-weight: 500;
}

/* --- Product grid --------------------------------------------------------- */

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(268px, 1fr));
  gap: 18px;
  padding-bottom: 48px;
}

.card {
  display: flex;
  flex-direction: column;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform 0.16s ease, border-color 0.16s;
}
@media (hover: hover) {
  .card:hover {
    transform: translateY(-3px);
    border-color: color-mix(in srgb, var(--accent) 50%, var(--border));
  }
}

.card-media {
  aspect-ratio: 16 / 10;
  background: var(--surface-2);
  object-fit: cover;
  width: 100%;
  border-bottom: 1px solid var(--border);
}

.card-body {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 18px 18px;
  flex: 1;
}

.card-cat {
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--accent);
  text-transform: uppercase;
}

.card-title {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 700;
  line-height: 1.4;
}

.card-blurb {
  margin: 0;
  font-size: 0.88rem;
  color: var(--text-dim);
  flex: 1;
}

.card-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-top: 12px;
}

.card .btn {
  padding: 9px 15px;
  font-size: 0.87rem;
}

.filesize {
  font-size: 0.76rem;
  color: var(--text-dim);
  font-variant-numeric: tabular-nums;
}

.empty {
  text-align: center;
  color: var(--text-dim);
  padding: 48px 0 64px;
}

/* --- Footer --------------------------------------------------------------- */

.site-footer {
  border-top: 1px solid var(--border);
  background: var(--surface);
  padding-block: 32px 20px;
}

.footer-inner {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 18px 28px;
  padding-bottom: 22px;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.9rem;
}
.contact-item svg {
  flex: none;
  margin-top: 5px;
  color: var(--accent);
}
.contact-item a {
  color: var(--text);
  text-decoration: none;
  word-break: break-word;
}
.contact-item a:hover {
  text-decoration: underline;
}
.contact-label {
  display: block;
  font-size: 0.74rem;
  color: var(--text-dim);
}

.footer-legal {
  border-top: 1px solid var(--border);
  padding-top: 16px;
  font-size: 0.8rem;
  color: var(--text-dim);
}

/* --- Shared focus ring ---------------------------------------------------- */

:where(a, button, input):focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 8px;
}

/* Latin text inside an RTL page (emails, URLs, phone numbers) stays LTR. */
[dir="rtl"] .ltr,
.ltr {
  direction: ltr;
  unicode-bidi: isolate;
}

@media (prefers-reduced-motion: reduce) {
  * {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}