@import url('../pdf/pdf.css');

:root{--student-accent:#7be6a0}
.student-page,footer{width:min(1240px,calc(100% - 40px));margin:auto}
.student-page{width:min(1240px,calc(100% - 40px));max-width:1240px;margin:auto;padding:18px 0 90px}
.student-nav{border-top-color:var(--student-accent)}
.student-nav .brand em,.student-nav nav a:hover{color:#8ff0b0}
.student-page>.kicker{display:none!important}
.student-page>h1,.student-hero h1{background:linear-gradient(100deg,#60A5FA 5%,#3B82F6 92%);-webkit-background-clip:text;background-clip:text;color:transparent;text-align:center;line-height:1.4!important;padding:8px 12px 14px!important;overflow:visible!important}
:root[data-theme="light"] .student-page>h1,:root[data-theme="light"] .student-hero h1{background:linear-gradient(100deg,#1d4ed8 5%,#2563EB 92%)!important;-webkit-background-clip:text!important;background-clip:text!important;-webkit-text-fill-color:transparent!important;color:#1d4ed8!important}
.student-page>h1:lang(hi),.student-hero h1:lang(hi){line-height:1.58!important;padding:12px 12px 18px!important}
.student-page>.intro{text-align:center;max-width:600px;margin:0 auto}
.student-hero{padding-bottom:24px}
.student-page h1{font-size:clamp(22px,3.4vw,30px)}

.student-list{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}
.student-card{position:relative;display:flex;flex-direction:column;min-height:165px;padding:22px 24px;border:1px solid var(--line);border-radius:18px;background:linear-gradient(145deg,rgba(20,30,48,.92),rgba(13,21,34,.96));color:var(--text);text-decoration:none;overflow:hidden;transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease}
.student-card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:0 18px 40px rgba(0,0,0,.26)}
.student-card .icon{position:relative;z-index:1;display:grid;place-items:center;width:44px;height:44px;border-radius:12px;font-size:15px;font-weight:800;margin-bottom:16px;flex-shrink:0;transition:transform .2s ease}
.student-card:hover .icon{transform:scale(1.05)}
.student-card h3{position:relative;z-index:1;margin:0 0 8px;font-size:16.5px;font-weight:750;letter-spacing:-.015em;color:var(--text)}
.student-card p{position:relative;z-index:1;margin:0;color:var(--muted);font-size:12.5px;line-height:1.55}
.student-card .arrow{display:none}

.calc-form{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin-top:22px}
.calc-form label{color:var(--muted);font-size:11px;font-weight:650}
.calc-form label.wide{grid-column:1/-1}
.calc-form input,.calc-form select{display:block;width:100%;height:44px;margin-top:7px;padding:0 12px;border:1px solid var(--line);border-radius:10px;background:var(--input-bg);color:var(--text);font:500 13px Inter,sans-serif;outline:0}
.calc-form input:focus,.calc-form select:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(25,211,239,.06)}
.calc-result{display:none;margin-top:22px;padding:22px;border:1px solid rgba(123,230,160,.35);border-radius:16px;background:rgba(123,230,160,.06)}
.calc-result.show{display:block}
.calc-result-main{font-size:30px;font-weight:800;color:var(--text)}
.calc-result-main small{display:block;margin-top:4px;color:var(--muted);font-size:12px;font-weight:600}
.calc-breakdown{margin-top:14px;display:grid;gap:8px}
.calc-row{display:flex;justify-content:space-between;padding:9px 0;border-top:1px solid var(--line);color:var(--muted);font-size:12.5px}
.calc-row strong{color:var(--text)}

.rows-table{width:100%;border-collapse:collapse;margin-top:18px}
.rows-table th{text-align:left;padding:8px 10px;color:var(--muted);font-size:10.5px;text-transform:uppercase;letter-spacing:.05em;border-bottom:1px solid var(--line)}
.rows-table td{padding:6px 8px}
.rows-table input,.rows-table select{width:100%;height:40px;padding:0 10px;border:1px solid var(--line);border-radius:9px;background:var(--input-bg);color:var(--text);font:500 12.5px Inter,sans-serif}
.rows-table .remove-row{border:0;background:transparent;color:var(--danger,#fb7185);font-size:18px;cursor:pointer}
.rows-actions{display:flex;gap:12px;margin-top:14px}

.timetable-grid{display:grid;grid-template-columns:90px repeat(6,1fr);gap:1px;margin-top:20px;background:var(--line);border:1px solid var(--line);border-radius:12px;overflow:hidden}
.timetable-grid .tt-cell{background:var(--input-bg);padding:8px;min-height:56px}
.timetable-grid .tt-head{background:var(--input-bg);color:var(--muted);font-size:10.5px;font-weight:700;text-align:center;display:flex;align-items:center;justify-content:center;text-transform:uppercase}
.timetable-grid input{width:100%;height:100%;border:0;background:transparent;color:var(--text);font:500 11.5px Inter,sans-serif;outline:0;resize:none}

@media(max-width:1100px){.student-list{grid-template-columns:repeat(3,1fr)}}
@media(max-width:780px){.student-list{grid-template-columns:repeat(2,1fr)}.calc-form{grid-template-columns:1fr}.timetable-grid{grid-template-columns:70px repeat(6,minmax(90px,1fr));overflow-x:auto}}
@media(max-width:520px){.student-list{grid-template-columns:1fr}}

:root[data-theme="light"] .student-card{background:#fff;border-color:rgba(15,23,42,.1);box-shadow:0 4px 18px rgba(15,23,42,.06)}
:root[data-theme="light"] .student-card:hover{box-shadow:0 16px 36px rgba(15,23,42,.12);border-color:var(--accent)}
:root[data-theme="light"] .student-card h3{color:#0f172a}
:root[data-theme="light"] .student-card p{color:#64748b}

.category-header{margin:32px 0 16px}
.category-header .kicker{margin-bottom:4px}
.category-header h2{margin:0;font-size:22px;font-weight:800;letter-spacing:-.015em}
.knowledge-chip-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:10px}
.knowledge-chip{display:inline-block;padding:4px 10px;border-radius:999px;background:rgba(56,189,248,.12);color:var(--text);font-size:12px;border:1px solid rgba(56,189,248,.3)}

/* Word History & Multi-Context Explorer Styles */
.word-search-bar-wrap{margin:20px 0 16px;background:var(--panel);border:1px solid var(--line);border-radius:18px;padding:16px 20px;box-shadow:0 8px 24px rgba(0,0,0,.15)}
.word-search-form{display:flex;gap:12px;align-items:center}
.word-search-input-box{flex:1;position:relative;display:flex;align-items:center}
.word-search-input-box svg{position:absolute;left:14px;color:var(--muted);pointer-events:none}
.word-search-input{width:100%;height:48px;padding:0 14px 0 42px;border:1px solid var(--line);border-radius:12px;background:var(--input-bg);color:var(--text);font:500 15px Inter,sans-serif;outline:0;transition:border-color .2s ease,box-shadow .2s ease}
.word-search-input:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(56,189,248,.12)}
.word-search-btn{height:48px;padding:0 24px;border:0;border-radius:12px;background:linear-gradient(135deg,#38bdf8,#2563eb);color:#fff;font:650 14px Inter,sans-serif;cursor:pointer;display:inline-flex;align-items:center;gap:8px;transition:opacity .2s ease,transform .1s ease}
.word-search-btn:hover{opacity:.92;transform:translateY(-1px)}

.popular-chips-wrap{margin-top:12px;display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.chips-label{font-size:11.5px;font-weight:700;color:var(--muted);text-transform:uppercase;letter-spacing:.04em}
.sample-chips{display:flex;flex-wrap:wrap;gap:6px}
.word-chip-btn{padding:5px 12px;border-radius:20px;border:1px solid var(--line);background:var(--input-bg);color:var(--text);font:600 12px Inter,sans-serif;cursor:pointer;transition:all .15s ease}
.word-chip-btn:hover{border-color:var(--accent);background:rgba(56,189,248,.12);color:var(--accent);transform:translateY(-1px)}

.word-hero-card{margin-top:20px;padding:24px 28px;border-radius:18px;border:1px solid var(--line);background:linear-gradient(135deg,rgba(15,23,42,.9),rgba(30,41,59,.85));box-shadow:0 12px 32px rgba(0,0,0,.2)}
:root[data-theme="light"] .word-hero-card{background:linear-gradient(135deg,#ffffff,#f1f5f9);border-color:#e2e8f0;box-shadow:0 8px 24px rgba(15,23,42,.06)}
.word-title-row{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px}
.word-main-title{display:flex;align-items:center;gap:12px}
.word-main-title h2{margin:0;font-size:32px;font-weight:800;letter-spacing:-.02em;color:var(--text)}
.word-main-title .phonetic{font-size:16px;color:#38bdf8;font-weight:550;font-family:monospace}
.btn-audio-speak{display:grid;place-items:center;width:36px;height:36px;border-radius:10px;border:1px solid var(--line);background:var(--input-bg);color:var(--text);cursor:pointer;transition:all .15s ease}
.btn-audio-speak:hover{border-color:#38bdf8;color:#38bdf8;transform:scale(1.05)}
.polysemy-tag{padding:6px 14px;border-radius:20px;background:rgba(16,185,129,.15);border:1px solid rgba(16,185,129,.3);color:#10b981;font-size:12px;font-weight:700}
.word-high-summary{margin:14px 0 0;font-size:14.5px;line-height:1.65;color:var(--text)}

.word-etymology-card{margin-top:18px;padding:20px 24px;border-radius:16px;border:1px solid rgba(245,158,11,.3);background:rgba(245,158,11,.05)}
.etymology-header{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:8px;margin-bottom:14px;padding-bottom:12px;border-bottom:1px solid rgba(245,158,11,.2)}
.etymology-badge{font-size:13px;font-weight:750;color:#f59e0b;letter-spacing:.02em}
.etymology-root{font-size:12.5px;color:var(--text)}
.etymology-timeline{display:grid;gap:12px;position:relative;margin-top:8px}
.timeline-step{display:flex;gap:14px;align-items:flex-start}
.timeline-marker{flex-shrink:0;padding:3px 10px;border-radius:8px;background:rgba(245,158,11,.18);color:#f59e0b;font:700 11px Inter,monospace;min-width:68px;text-align:center}
.timeline-content h4{margin:0 0 3px;font-size:13.5px;font-weight:700;color:var(--text)}
.timeline-content p{margin:0;font-size:12px;color:var(--muted);line-height:1.55}

.contexts-heading-wrap{margin:32px 0 16px}
.contexts-heading-wrap h3{margin:0 0 4px;font-size:20px;font-weight:800;color:var(--text)}
.contexts-sub{margin:0;font-size:12.5px;color:var(--muted)}
.contexts-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(330px,1fr));gap:16px}
.context-card{display:flex;flex-direction:column;gap:12px;padding:20px 22px;border-radius:16px;border:1px solid var(--line);background:var(--panel);box-shadow:0 6px 18px rgba(0,0,0,.15);transition:transform .2s ease,border-color .2s ease}
:root[data-theme="light"] .context-card{background:#ffffff;border-color:#e2e8f0;box-shadow:0 4px 16px rgba(15,23,42,.05)}
.context-card:hover{transform:translateY(-3px);border-color:var(--accent)}
.context-header{display:flex;justify-content:space-between;align-items:center}
.context-domain-tag{display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:12px;background:rgba(56,189,248,.12);border:1px solid rgba(56,189,248,.25);color:#38bdf8;font:700 12px Inter,sans-serif}
.context-def .def-en{margin:0;font-size:13.5px;font-weight:600;color:var(--text);line-height:1.55}
.context-def .def-hi{margin:6px 0 0;font-size:12.5px;color:var(--muted);line-height:1.5}
.context-why-box{padding:10px 12px;border-radius:10px;background:rgba(168,85,247,.08);border:1px solid rgba(168,85,247,.2)}
.why-label{display:block;font-size:11px;font-weight:750;color:#c084fc;text-transform:uppercase;letter-spacing:.03em;margin-bottom:3px}
.context-why-box p{margin:0;font-size:12px;color:var(--text);line-height:1.5}
.context-example{padding:10px 12px;border-radius:10px;background:var(--input-bg);border:1px solid var(--line)}
.example-label{display:block;font-size:10.5px;font-weight:700;color:var(--muted);text-transform:uppercase;margin-bottom:4px}
.example-quote{margin:0;font-style:italic;font-size:12.5px;color:var(--text);line-height:1.5}
.example-hi-trans{margin:4px 0 0;font-size:11.5px;color:var(--muted)}
.context-collocations{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-top:auto;padding-top:8px}
.colloc-label{font-size:11px;font-weight:700;color:var(--muted)}
.colloc-chips{display:flex;flex-wrap:wrap;gap:6px}
.colloc-chip{padding:2px 8px;border-radius:6px;background:var(--input-bg);border:1px solid var(--line);font-size:11px;color:var(--text)}

.word-loading-card{padding:48px 24px;text-align:center;border-radius:18px;border:1px solid var(--line);background:var(--panel)}
.word-loading-card .spinner{width:36px;height:36px;border:3px solid rgba(56,189,248,.2);border-top-color:#38bdf8;border-radius:50%;animation:spin 1s linear infinite;margin:0 auto 16px}
@keyframes spin{to{transform:rotate(360deg)}}
.word-error-card{padding:28px 24px;border-radius:16px;border:1px solid rgba(239,68,68,.3);background:rgba(239,68,68,.06);color:var(--text)}

@media(max-width:768px){
  .word-search-form{flex-direction:column;align-items:stretch}
  .word-search-btn{width:100%;justify-content:center}
  .contexts-grid{grid-template-columns:1fr}
}

/* Student Result Card Layouts for Lexical & Historical Tools */
.knowledge-breakdown{display:grid;gap:12px;margin-top:14px}
.def-item{padding:14px 16px;border-radius:12px;background:var(--input-bg);border:1px solid var(--line);text-align:left}
.def-item-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px}
.def-part-badge{display:inline-block;padding:2px 8px;border-radius:6px;background:rgba(56,189,248,.15);color:#38bdf8;font:700 11px Inter,sans-serif;text-transform:uppercase}
.def-meaning-text{font-size:14px;color:var(--text);line-height:1.6;margin:0 0 6px}
.def-example-text{font-size:12.5px;color:var(--muted);font-style:italic;margin:0}
.def-hi-text{font-size:13px;color:#c084fc;margin:4px 0 0;font-weight:550}
.event-item-box{display:flex;gap:14px;align-items:flex-start;padding:12px 14px;border-radius:12px;background:var(--input-bg);border:1px solid var(--line);text-align:left}
.event-year-tag{flex-shrink:0;padding:3px 10px;border-radius:8px;background:rgba(245,158,11,.18);color:#f59e0b;font:750 12px monospace}
.event-desc-text{font-size:13px;color:var(--text);line-height:1.55;margin:0}
.syn-chips-grid{display:flex;flex-wrap:wrap;gap:8px;margin-top:6px}
.syn-clickable-chip{padding:5px 12px;border-radius:20px;background:var(--panel);border:1px solid var(--line);color:var(--text);font:600 12px Inter,sans-serif;cursor:pointer;transition:all .15s}
.syn-clickable-chip:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-1px)}
.btn-speak-inline{display:inline-flex;align-items:center;justify-content:center;width:32px;height:32px;border-radius:8px;border:1px solid var(--line);background:var(--input-bg);color:var(--text);cursor:pointer;margin-left:8px;vertical-align:middle;transition:all .15s}
.btn-speak-inline:hover{border-color:#38bdf8;color:#38bdf8;transform:scale(1.08)}

/* Word Knowledge Hub — Mode Bar & Hinglish Cards */
.word-mode-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  padding: 10px 14px;
  border-radius: 12px;
  background: var(--panel);
  border: 1px solid var(--line);
  margin-bottom: 12px;
}
:root[data-theme="light"] .word-mode-bar {
  background: #f8fafc;
  border-color: #e2e8f0;
}
.mode-bar-label {
  font-size: 11.5px;
  font-weight: 750;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: .04em;
}
.mode-pill-group {
  display: inline-flex;
  gap: 6px;
  background: var(--input-bg);
  padding: 3px;
  border-radius: 999px;
  border: 1px solid var(--line);
}
.word-mode-pill {
  padding: 5px 12px;
  border-radius: 999px;
  border: none;
  background: transparent;
  color: var(--muted);
  font: 650 11.5px Inter, sans-serif;
  cursor: pointer;
  transition: all .18s ease;
  user-select: none;
}
.word-mode-pill:hover {
  color: var(--text);
}
.word-mode-pill.active {
  background: var(--accent);
  color: #ffffff;
  box-shadow: 0 2px 8px rgba(37, 99, 235, 0.3);
}

/* Hinglish Concept Card */
.word-hinglish-box {
  padding: 14px 16px;
  border-radius: 12px;
  background: rgba(168, 85, 247, 0.09);
  border: 1px solid rgba(168, 85, 247, 0.28);
  margin: 10px 0;
  text-align: left;
}
:root[data-theme="light"] .word-hinglish-box {
  background: #faf5ff;
  border-color: #e9d5ff;
}
.hinglish-header {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 800;
  color: #c084fc;
  text-transform: uppercase;
  letter-spacing: .04em;
  margin-bottom: 6px;
}
:root[data-theme="light"] .hinglish-header {
  color: #9333ea;
}
.hinglish-text {
  margin: 0;
  font-size: 13.5px;
  color: var(--text);
  line-height: 1.6;
}

/* Core Hindi Meaning Box */
.word-core-hi-box {
  padding: 12px 16px;
  border-radius: 12px;
  background: rgba(56, 189, 248, 0.08);
  border: 1px solid rgba(56, 189, 248, 0.25);
  margin-bottom: 10px;
  text-align: left;
}
:root[data-theme="light"] .word-core-hi-box {
  background: #eff6ff;
  border-color: #bfdbfe;
}
.core-hi-label {
  font-size: 11px;
  font-weight: 750;
  color: #38bdf8;
  text-transform: uppercase;
  margin-bottom: 4px;
}
:root[data-theme="light"] .core-hi-label {
  color: #2563eb;
}
.core-hi-val {
  font-size: 17px;
  font-weight: 750;
  color: var(--text);
  line-height: 1.4;
}

/* Etymology Box */
.word-etymology-box {
  padding: 12px 16px;
  border-radius: 12px;
  background: rgba(245, 158, 11, 0.08);
  border: 1px solid rgba(245, 158, 11, 0.25);
  margin-top: 10px;
  text-align: left;
}
:root[data-theme="light"] .word-etymology-box {
  background: #fffbeb;
  border-color: #fde68a;
}
.etym-header {
  font-size: 11px;
  font-weight: 800;
  color: #f59e0b;
  text-transform: uppercase;
  margin-bottom: 4px;
}
:root[data-theme="light"] .etym-header {
  color: #b45309;
}
.etym-text {
  margin: 0;
  font-size: 12.5px;
  color: var(--text);
  line-height: 1.55;
}

/* View Mode Toggling */
.example-box {
  margin: 8px 0 4px;
  padding: 10px 14px;
  border-radius: 8px;
  background: var(--input-bg);
  border-left: 3px solid var(--accent);
}
.example-en-quote {
  font-size: 13.5px;
  color: var(--text);
  font-style: italic;
  margin: 0;
  line-height: 1.5;
}
.example-hi-trans {
  font-size: 12.5px;
  color: var(--muted);
  margin: 6px 0 0;
  line-height: 1.45;
}

[data-word-view="en"] .word-core-hi-box,
[data-word-view="en"] .word-hinglish-box,
[data-word-view="en"] .def-hi-text,
[data-word-view="en"] .def-hi,
[data-word-view="en"] .example-hi-trans {
  display: none !important;
}

[data-word-view="hi"] .def-meaning-text,
[data-word-view="hi"] .def-en,
[data-word-view="hi"] .example-en-quote {
  display: none !important;
}
[data-word-view="hi"] .word-core-hi-box {
  border-color: var(--accent);
}