/* ─────────────────────────────────────────
   URDU GRAMMAR & STUDY SHEET — MINIMAL GUIDE
   ───────────────────────────────────────── */

/* 1. TOKENS */
:root {
  --bg: #0b0c0e;
  --bg-card: #121318;
  --bg-card-2: #181920;
  --bg-card-3: #1f202a;
  --border: #242531;
  --border-soft: #1b1c26;

  --text: #ececf1;
  --text-2: #9b9cae;
  --text-3: #636477;

  /* Literary emerald theme */
  --accent: #10b981;
  --accent-soft: rgba(16, 185, 129, 0.12);
  --accent-border: rgba(16, 185, 129, 0.28);

  --pos: #34d399;
  --pos-soft: rgba(52, 211, 153, 0.1);
  --neg: #f87171;
  --neg-soft: rgba(248, 113, 113, 0.1);
  --que: #fbbf24;
  --que-soft: rgba(251, 191, 36, 0.1);

  --subj: rgba(16, 185, 129, 0.18);
  --obj: rgba(56, 189, 248, 0.18);
  --verb: rgba(244, 114, 182, 0.18);

  --radius: 12px;
  --radius-sm: 6px;
  --radius-pill: 9999px;

  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
  --font-urdu: 'Noto Nastaliq Urdu', 'Noto Sans Arabic', 'Urdu Typesetting', serif;

  --max-w: 960px;
  --pad: clamp(1rem, 4vw, 2rem);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  min-height: 100dvh;
}

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

ul {
  list-style: none;
}

/* 3. LAYOUT */
.container {
  max-width: var(--max-w);
  margin-inline: auto;
  padding-inline: var(--pad);
}

/* 4. HEADER */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(11, 12, 14, 0.88);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  padding-block: 1rem 0.75rem;
}

.header-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.875rem;
  flex-wrap: wrap;
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 0.875rem;
}

.site-tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  color: var(--accent);
  background: var(--accent-soft);
  border: 1px solid var(--accent-border);
  border-radius: 4px;
  padding: 0.25em 0.6em;
  text-transform: uppercase;
}

.site-title {
  font-size: clamp(1.15rem, 2.5vw, 1.45rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--text);
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
}

.site-title .urdu-badge {
  font-family: var(--font-urdu);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
}

.site-subtitle {
  font-size: 0.8rem;
  color: var(--text-3);
  font-variant-numeric: tabular-nums;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.search-box {
  position: relative;
  display: flex;
  align-items: center;
}

.search-input {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  padding: 0.35rem 0.75rem 0.35rem 2rem;
  font-size: 0.78rem;
  color: var(--text);
  outline: none;
  font-family: var(--font-sans);
  width: 170px;
  transition:
    width 0.2s ease,
    border-color 0.2s ease;
}

.search-input:focus {
  border-color: var(--accent);
  width: 210px;
}

.search-icon {
  position: absolute;
  left: 0.7rem;
  pointer-events: none;
  color: var(--text-3);
  font-size: 0.75rem;
}

.btn-toggle {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  padding: 0.35rem 0.75rem;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-2);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  transition:
    color 0.15s,
    border-color 0.15s,
    background 0.15s;
}

.btn-toggle:hover,
.btn-toggle.active {
  color: var(--accent);
  border-color: var(--accent-border);
  background: var(--accent-soft);
}

/* TOC */
.toc {
  overflow-x: auto;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

.toc::-webkit-scrollbar {
  display: none;
}

#toc-list {
  display: flex;
  gap: 0.35rem;
  padding-bottom: 2px;
  white-space: nowrap;
}

#toc-list a {
  font-size: 0.72rem;
  font-weight: 500;
  color: var(--text-3);
  padding: 0.3em 0.75em;
  border-radius: 40px;
  border: 1px solid transparent;
  transition:
    color 0.15s,
    border-color 0.15s,
    background 0.15s;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

#toc-list a .toc-ur {
  font-family: var(--font-urdu);
  font-size: 0.85rem;
  opacity: 0.85;
}

#toc-list a:hover,
#toc-list a.active {
  color: var(--accent);
  border-color: var(--accent-border);
  background: var(--accent-soft);
}

/* 5. MAIN CONTENT */
.main-content {
  padding-block: 2rem 4rem;
}

/* 6. MEMORY CARD */
.memory-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  margin-bottom: 2.5rem;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
}

.memory-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border-soft);
}

.memory-title {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.memory-title-ur {
  font-family: var(--font-urdu);
  font-size: 0.95rem;
  color: var(--text-2);
}

.memory-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
}

.memory-group {
  display: flex;
  flex-direction: column;
}

.memory-label {
  display: block;
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-3);
  margin-bottom: 0.625rem;
}

.memory-items {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.memory-items span {
  font-size: 0.8rem;
  color: var(--text-2);
  line-height: 1.45;
}

.memory-items em {
  font-style: normal;
  color: var(--text);
  font-weight: 500;
}

.memory-items .ur-pill {
  display: inline-block;
  font-family: var(--font-urdu);
  font-size: 0.88rem;
  color: var(--accent);
  direction: rtl;
  padding-inline: 0.2rem;
}

/* 7. TIME / CATEGORY GROUP */
.time-group {
  position: relative;
  margin-bottom: 1.25rem;
}

.time-label {
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-3);
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.time-label span.ur {
  font-family: var(--font-urdu);
  font-size: 0.95rem;
  color: var(--accent);
  letter-spacing: 0;
  font-weight: 600;
}

.time-label::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}

/* 8. TENSE & GRAMMAR CARD */
.tense-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
  margin-bottom: 1.25rem;
  transition:
    border-color 0.2s,
    box-shadow 0.2s;
  content-visibility: auto;
  contain-intrinsic-size: auto none auto 380px;
}

.tense-card:hover {
  border-color: #2e3040;
}

/* Card Header */
.card-header {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.tense-number {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--accent);
  background: var(--bg-card-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.3em 0.65em;
  flex-shrink: 0;
  margin-top: 0.15em;
}

.card-title-wrap {
  flex: 1;
}

.tense-name-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-bottom: 0.35rem;
}

.tense-name {
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--text);
  line-height: 1.3;
}

.tense-urdu-title {
  font-family: var(--font-urdu);
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--accent);
  direction: rtl;
  line-height: 1.2;
}

.tense-use {
  font-size: 0.82rem;
  color: var(--text-2);
  line-height: 1.45;
}

/* Formula row */
.formula-row {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 1.35rem;
}

.formula-block {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  background: var(--bg-card-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.55em 0.85em;
  flex: 1;
  min-width: 220px;
}

.formula-tag {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-3);
  width: 1.2ch;
  flex-shrink: 0;
}

.formula-block code {
  font-family: var(--font-mono);
  font-size: 0.775rem;
  color: var(--accent);
  letter-spacing: 0.01em;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  flex-wrap: wrap;
}

.formula-block code .formula-urdu {
  font-family: var(--font-urdu);
  font-size: 0.95rem;
  direction: rtl;
  color: var(--text);
  padding-inline: 0.15rem;
}

/* Subject Rules */
.subject-rules {
  margin-bottom: 1.25rem;
}

.rules-label {
  font-size: 0.64rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-3);
  margin-bottom: 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.rules-grid {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.rule-row {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  background: var(--bg-card-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.5rem 0.875rem;
  flex-wrap: wrap;
}

.rule-subjects {
  font-size: 0.82rem;
  color: var(--text-2);
  line-height: 1.6;
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.rule-subjects .ur-pronoun {
  font-family: var(--font-urdu);
  font-size: 1.05rem;
  color: var(--text);
  font-weight: 600;
  direction: rtl;
}

.rule-arrow {
  color: var(--text-3);
  font-size: 0.75rem;
  flex-shrink: 0;
}

.rule-form {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--accent);
  letter-spacing: 0.01em;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  flex-wrap: wrap;
}

.rule-form .ur-conjugation {
  font-family: var(--font-urdu);
  font-size: 0.98rem;
  color: #a7f3d0;
  direction: rtl;
}

.rule-note {
  font-family: var(--font-sans);
  font-size: 0.72rem;
  color: var(--text-3);
  font-style: italic;
  margin-left: auto;
}

/* Examples Grid */
.examples-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border-soft);
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 1px solid var(--border-soft);
}

.example-col {
  background: var(--bg);
  padding: 1.15rem 1rem;
}

.col-tag {
  display: inline-block;
  font-size: 0.63rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border-radius: 4px;
  padding: 0.22em 0.65em;
  margin-bottom: 0.875rem;
}

.col-tag.positive {
  color: var(--pos);
  background: var(--pos-soft);
}
.col-tag.negative {
  color: var(--neg);
  background: var(--neg-soft);
}
.col-tag.question {
  color: var(--que);
  background: var(--que-soft);
}

.example-list {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.example-item {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  padding-bottom: 0.65rem;
  border-bottom: 1px dashed rgba(255, 255, 255, 0.05);
}

.example-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.urdu-text {
  font-family: var(--font-urdu);
  font-size: 1.15rem;
  line-height: 1.95;
  color: #f3f4f6;
  direction: rtl;
  text-align: right;
  letter-spacing: 0;
}

.translit {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: #38bdf8;
  line-height: 1.35;
  letter-spacing: 0.01em;
}

.trans {
  font-size: 0.78rem;
  color: var(--text-2);
  line-height: 1.35;
}

/* Subject & Word Highlights */
mark.subj {
  background: var(--subj);
  color: #34d399;
  border-radius: 3px;
  padding: 0 3px;
  font-weight: 600;
}

mark.verb {
  background: var(--verb);
  color: #f472b6;
  border-radius: 3px;
  padding: 0 3px;
}

mark.obj {
  background: var(--obj);
  color: #38bdf8;
  border-radius: 3px;
  padding: 0 3px;
}

/* 9. FOOTER */
.site-footer {
  border-top: 1px solid var(--border);
  padding-block: 1.75rem;
  background: var(--bg);
}

.site-footer .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.footer-nav {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.back-to-top,
.nav-link {
  font-size: 0.78rem;
  color: var(--text-3);
  font-weight: 500;
  padding: 0.4em 0.85em;
  border: 1px solid var(--border);
  border-radius: 40px;
  transition:
    color 0.15s,
    border-color 0.15s,
    background 0.15s;
}

.back-to-top:hover,
.nav-link:hover {
  color: var(--accent);
  border-color: var(--accent-border);
  background: var(--accent-soft);
}

.footer-note {
  font-size: 0.75rem;
  color: var(--text-3);
}

/* 10. NO TRANSLITERATION CLASS */
body.hide-translit .translit {
  display: none !important;
}

/* 11. RESPONSIVE DESIGN */
@media (max-width: 820px) {
  .memory-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .examples-grid {
    grid-template-columns: 1fr;
  }

  .example-col {
    padding: 1rem;
  }
}

@media (max-width: 600px) {
  .header-top {
    flex-direction: column;
    align-items: stretch;
  }

  .header-actions {
    justify-content: space-between;
  }

  .search-input {
    width: 100%;
  }
  .search-input:focus {
    width: 100%;
  }

  .memory-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

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

  .formula-block {
    min-width: unset;
  }

  .tense-card {
    padding: 1.25rem;
  }

  .card-header {
    flex-direction: column;
    gap: 0.5rem;
  }

  .tense-name-row {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.25rem;
  }

  .tense-number {
    align-self: flex-start;
  }

  .rule-note {
    margin-left: 0;
    width: 100%;
  }
}

/* 12. REDUCED MOTION */
@media (prefers-reduced-motion: reduce) {
  * {
    transition: none !important;
  }
  html {
    scroll-behavior: auto;
  }
}