/* ════════════════════════════════════
   TUVI FORM + RESULT (tuvi-form.css)
   Matching tuvi_product.html dark theme
════════════════════════════════════ */

/* ─── Design tokens ─── */
:root {
  --tvtt-bg:         #0a0a0f;
  --tvtt-bg-card:    #0f0f18;
  --tvtt-bg-input:   #13131f;
  --tvtt-bg-hover:   #1a1a2e;
  --tvtt-gold:       #c9a84c;
  --tvtt-gold-light: #e0c070;
  --tvtt-gold-dim:   #7a6030;
  --tvtt-gold-bdr:   #3d3010;
  --tvtt-red-dark:   #8b1a1a;
  --tvtt-red-mid:    #b52a2a;
  --tvtt-border:     #2a2a40;
  --tvtt-text:       #e8e0d0;
  --tvtt-text-muted: #8a8070;
  --tvtt-text-dim:   #5a5448;
  --tvtt-radius:     12px;
  --tvtt-radius-sm:  8px;
  --tvtt-shadow:     0 8px 40px rgba(0,0,0,.6);
  --tvtt-glow:       0 0 30px rgba(201,168,76,.12);
}

/* ─── Form section ─── */
.form-section {
  padding: 60px 20px 80px;
  display: flex;
  justify-content: center;
  position: relative;
  z-index: 1;
}
.form-card {
  background: var(--tvtt-bg-card);
  border: 1px solid var(--tvtt-border);
  border-radius: 20px;
  padding: clamp(24px, 5vw, 48px);
  width: 100%; max-width: 580px;
  box-shadow: var(--tvtt-shadow), var(--tvtt-glow), inset 0 1px 0 rgba(201,168,76,.08);
  position: relative; overflow: hidden;
}
.form-card::before, .form-card::after {
  content: ''; position: absolute;
  width: 60px; height: 60px;
  border-color: var(--tvtt-gold-dim); border-style: solid; opacity: .4;
}
.form-card::before { top:16px;left:16px;border-width:1px 0 0 1px; }
.form-card::after  { bottom:16px;right:16px;border-width:0 1px 1px 0; }

.form-title {
  font-family: 'Playfair Display',serif; font-size:19px; font-weight:500;
  color: var(--tvtt-gold); text-align:center; margin-bottom:5px; letter-spacing:.04em;
}
.form-sub {
  font-size:12px; color:var(--tvtt-text-dim); text-align:center;
  margin-bottom:28px; font-style:italic;
}

/* ─── Fields ─── */
.field { margin-bottom: 20px; }
.field-label {
  display:block; font-size:12px; font-weight:600; letter-spacing:.1em;
  text-transform:uppercase; color:var(--tvtt-text-muted); margin-bottom:7px;
}
.field-label .req, .req { color:var(--tvtt-red-mid); margin-left: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; }

#tuvi-form input[type="text"],
#tuvi-form input[type="number"],
#tuvi-form input[type="email"],
#tuvi-form select {
  width:100%; background:var(--tvtt-bg-input);
  border:1px solid var(--tvtt-border); border-radius:var(--tvtt-radius-sm);
  color:var(--tvtt-text); font-family:'Inter',sans-serif; font-size:15px;
  padding:11px 15px; min-height:44px;
  appearance:none; -webkit-appearance:none; outline:none;
  transition:border-color .2s, background .2s, box-shadow .2s;
}
#tuvi-form input:focus,
#tuvi-form select:focus {
  border-color:var(--tvtt-gold-dim); background:var(--tvtt-bg-hover);
  box-shadow:0 0 0 3px rgba(201,168,76,.08);
}
#tuvi-form input::placeholder { color:var(--tvtt-text-dim); }

.select-wrap { position:relative; }
.select-wrap::after {
  content:'▾'; position:absolute; right:13px; top:50%; transform:translateY(-50%);
  color:var(--tvtt-gold); font-size:12px; pointer-events:none;
}
#tuvi-form select { padding-right:34px; cursor:pointer; }
#tuvi-form select option { background:#1a1a2e; color:var(--tvtt-text); }

/* ─── Toggle groups ─── */
.toggle-group { display:flex; gap:8px; flex-wrap:wrap; }
.toggle-group input[type="radio"] { display:none; }
.toggle-btn {
  flex:1; min-width:80px; min-height:44px; padding:10px 14px;
  border:1px solid var(--tvtt-border); border-radius:var(--tvtt-radius-sm);
  background:var(--tvtt-bg-input); color:var(--tvtt-text-muted);
  font-family:'Inter',sans-serif; font-size:14px; font-weight:500;
  text-align:center; cursor:pointer; transition:border-color .2s, background .2s, color .2s;
  user-select:none; display:flex; align-items:center; justify-content:center;
}
.toggle-btn:hover { border-color:var(--tvtt-gold-dim); color:var(--tvtt-text); }
input[type="radio"]:checked + .toggle-btn {
  border-color:var(--tvtt-gold); background:rgba(201,168,76,.08);
  color:var(--tvtt-gold); box-shadow:0 0 12px rgba(201,168,76,.1);
}

/* ─── Date row ─── */
.date-row { display:grid; grid-template-columns:1fr 1fr 1.4fr; gap:10px; }
.date-row .field { margin-bottom:0; }

/* ─── Calendar note ─── */
.cal-note { font-size:12px; color:var(--tvtt-text-dim); font-style:italic; margin-top:6px; padding-left:4px; min-height:16px; }

/* ─── Leap month ─── */
.leap-field {
  display:none; align-items:center; gap:10px; margin-top:10px;
  padding:10px 14px; background:rgba(201,168,76,.04);
  border:1px solid var(--tvtt-gold-bdr); border-radius:var(--tvtt-radius-sm);
}
.leap-field.visible { display:flex; }
.leap-field label { font-size:13px; color:var(--tvtt-text-muted); cursor:pointer; }
.custom-cb {
  width:18px; height:18px; background:var(--tvtt-bg-input);
  border:1px solid var(--tvtt-border); border-radius:4px;
  display:flex; align-items:center; justify-content:center;
  flex-shrink:0; cursor:pointer; transition:background .15s, border-color .15s;
}
.custom-cb.on { background:rgba(201,168,76,.15); border-color:var(--tvtt-gold); }
.custom-cb.on::after { content:'✓'; font-size:11px; color:var(--tvtt-gold); line-height:1; }

/* ─── Divider ─── */
.field-divider { border:none; border-top:1px solid var(--tvtt-border); margin:24px 0; opacity:.5; }

/* ─── Errors ─── */
.err-msg { font-size:12px; color:#e05050; margin-top:5px; padding-left:4px; display:none; }
.field.err input, .field.err select { border-color:var(--tvtt-red-dark); box-shadow:0 0 0 2px rgba(139,26,26,.15); }
.field.err .err-msg { display:block; }

/* ─── Submit ─── */
.btn-submit {
  width:100%; padding:15px 24px; min-height:52px;
  background:linear-gradient(135deg,#c9a84c 0%,#a07830 50%,#c9a84c 100%);
  background-size:200% 100%; border:none; border-radius:var(--tvtt-radius-sm);
  color:#0a0a0f; font-family:'Playfair Display',serif; font-size:16px; font-weight:600;
  letter-spacing:.08em; cursor:pointer;
  transition:background-position .4s, transform .15s, box-shadow .3s;
  box-shadow:0 4px 20px rgba(201,168,76,.25);
}
.btn-submit:hover { background-position:100% 0; box-shadow:0 6px 30px rgba(201,168,76,.4); transform:translateY(-1px); }
.btn-submit:active { transform:translateY(0); }
.btn-submit:disabled { opacity:.5; cursor:not-allowed; transform:none; }

/* ─── Loading overlay ─── */
#loading-overlay {
  display:none; position:fixed; inset:0;
  background:rgba(10,10,15,.9); backdrop-filter:blur(5px);
  z-index:9999; flex-direction:column; align-items:center; justify-content:center; gap:18px;
}
#loading-overlay.active { display:flex; }
.spinner-ring {
  width:52px; height:52px; border:2px solid var(--tvtt-border);
  border-top-color:var(--tvtt-gold); border-radius:50%;
  animation:tvtt-spin .9s linear infinite;
}
@keyframes tvtt-spin { to { transform:rotate(360deg); } }
.loading-text {
  font-family:'Playfair Display',serif; font-style:italic;
  color:var(--tvtt-text-muted); font-size:15px; letter-spacing:.06em;
  animation:tvtt-pulse 1.8s ease-in-out infinite;
}
@keyframes tvtt-pulse { 0%,100%{opacity:.5} 50%{opacity:1} }

/* ─── Result page (page-ket-qua) ─── */

/* Page wrapper */
.kq-page-wrap {
  min-height: 100vh;
  background: var(--tvtt-bg);
  padding-top: 64px;
}

/* Loading full screen */
.kq-full-loading {
  min-height: 80vh; display:flex; align-items:center; justify-content:center;
}
.kq-loading-box { text-align:center; }
.kq-loading-ring {
  width:48px; height:48px; border:2px solid var(--tvtt-border);
  border-top-color:var(--tvtt-gold); border-radius:50%;
  animation:tvtt-spin 1s linear infinite; margin:0 auto 16px;
}

/* Result header */
.kq-result-header {
  background:var(--tvtt-bg-card); border:1px solid var(--tvtt-border);
  border-top:2px solid var(--tvtt-gold-dim); border-radius:20px;
  padding:28px 36px; margin-bottom:16px; text-align:center;
  box-shadow:var(--tvtt-shadow); position:relative; overflow:hidden;
}
.kq-result-header::before {
  content:''; position:absolute; top:0; left:0; right:0; height:1px;
  background:linear-gradient(90deg,transparent,var(--tvtt-gold),transparent);
}
.kq-result-name {
  font-family:'Playfair Display',serif; font-size:clamp(22px,5vw,32px);
  color:var(--tvtt-gold); margin-bottom:10px;
}
.kq-meta-chips { display:flex; flex-wrap:wrap; gap:6px 12px; justify-content:center; margin-top:10px; }
.kq-meta-chip {
  background:rgba(201,168,76,.06); border:1px solid var(--tvtt-gold-bdr);
  border-radius:20px; padding:3px 13px; font-size:13px; color:var(--tvtt-text-muted);
}
.kq-meta-chip span { color:var(--tvtt-gold-light); font-weight:500; }

/* Action buttons */
.kq-result-actions { display:flex; gap:10px; justify-content:flex-end; margin-bottom:14px; flex-wrap:wrap; }
.kq-btn-action {
  padding:9px 18px; min-height:40px; border:1px solid var(--tvtt-border);
  border-radius:var(--tvtt-radius-sm); background:transparent; color:var(--tvtt-text-muted);
  font-family:'Inter',sans-serif; font-size:13px; cursor:pointer;
  transition:border-color .18s, color .18s; display:flex; align-items:center; gap:6px;
}
.kq-btn-action:hover { border-color:var(--tvtt-gold-dim); color:var(--tvtt-gold); }
.kq-btn-save  { color:#86efac; border-color:rgba(134,239,172,.25); }
.kq-btn-save:hover  { background:rgba(134,239,172,.06); color:#86efac; border-color:rgba(134,239,172,.5); }
.kq-btn-email { color:#93c5fd; border-color:rgba(147,197,253,.25); }
.kq-btn-email:hover { background:rgba(147,197,253,.06); color:#93c5fd; border-color:rgba(147,197,253,.5); }
.kq-btn-pdf   { color:var(--tvtt-gold); border-color:rgba(201,168,76,.3); }
.kq-btn-pdf:hover { background:rgba(201,168,76,.06); }
.kq-btn-new   { color:var(--tvtt-text-muted); }

/* Result tabs */
.kq-result-tabs {
  display:flex; gap:2px; border-bottom:1px solid var(--tvtt-border);
  margin-bottom:16px; overflow-x:auto; -webkit-overflow-scrolling:touch;
}
.kq-tab-btn {
  padding:10px 20px; min-height:44px; white-space:nowrap;
  background:transparent; border:none; border-bottom:2px solid transparent;
  color:var(--tvtt-text-muted); font-family:'Inter',sans-serif; font-size:14px; font-weight:500;
  cursor:pointer; transition:color .2s, border-color .2s; margin-bottom:-1px;
}
.kq-tab-btn:hover { color:var(--tvtt-text); }
.kq-tab-btn.active { color:var(--tvtt-gold); border-bottom-color:var(--tvtt-gold); }
.kq-tab-panel { display:none; }
.kq-tab-panel.active { display:block; }

/* Chart container */
#kq-chart-container {
  background:var(--tvtt-bg-card); border:1px solid var(--tvtt-border);
  border-radius:20px; padding:20px 16px; box-shadow:var(--tvtt-shadow); overflow-x:auto;
}

/* AI Panel */
.kq-api-bar {
  background:var(--tvtt-bg-card); border:1px solid var(--tvtt-border);
  border-radius:14px; padding:16px 20px; margin-bottom:16px;
  display:flex; gap:10px; flex-wrap:wrap; align-items:center;
}
.kq-api-input {
  flex:1; min-width:200px; padding:10px 14px; background:var(--tvtt-bg-input);
  border:1px solid var(--tvtt-border); border-radius:var(--tvtt-radius-sm);
  color:var(--tvtt-text); font-family:'Inter',sans-serif; font-size:14px; outline:none;
  transition:border-color .2s;
}
.kq-api-input:focus { border-color:var(--tvtt-gold-dim); }
.kq-api-input::placeholder { color:var(--tvtt-text-dim); }
.kq-api-eye { background:none; border:none; cursor:pointer; color:var(--tvtt-text-muted); font-size:15px; padding:6px; }
.kq-api-eye:hover { color:var(--tvtt-text); }
.kq-vande-sel {
  padding:10px 32px 10px 14px; background:var(--tvtt-bg-input);
  border:1px solid var(--tvtt-border); border-radius:var(--tvtt-radius-sm);
  color:var(--tvtt-text); font-family:'Inter',sans-serif; font-size:14px;
  outline:none; cursor:pointer; appearance:none;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23c9a84c' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat:no-repeat; background-position:right 10px center;
}
.kq-vande-sel option { background:#1a1a2e; }
.kq-luan-giai-btn {
  padding:10px 20px; background:rgba(201,168,76,.12); border:1px solid var(--tvtt-gold-dim);
  border-radius:var(--tvtt-radius-sm); color:var(--tvtt-gold);
  font-family:'Playfair Display',serif; font-size:14px; font-weight:600;
  cursor:pointer; transition:.2s; white-space:nowrap;
}
.kq-luan-giai-btn:hover { background:rgba(201,168,76,.22); }
.kq-luan-giai-btn:disabled { opacity:.5; cursor:not-allowed; }

/* AI content */
.kq-ai-card {
  background:var(--tvtt-bg-card); border:1px solid var(--tvtt-border);
  border-radius:20px; padding:28px 32px; box-shadow:var(--tvtt-shadow);
}
.kq-ai-placeholder { text-align:center; padding:40px 20px; }
.kq-ai-ph-star { font-size:28px; color:rgba(201,168,76,.3); margin-bottom:14px; }
.kq-ai-placeholder p { font-size:14px; color:var(--tvtt-text-muted); line-height:1.6; max-width:400px; margin:0 auto; }
.kq-ai-prose { font-size:15px; line-height:1.85; color:#d8d0c0; }
.kq-ai-prose h3 { font-family:'Playfair Display',serif; font-size:17px; color:var(--tvtt-gold-light); margin:22px 0 10px; padding:8px 14px; background:rgba(201,168,76,.05); border-left:3px solid var(--tvtt-gold); border-radius:0 6px 6px 0; }
.kq-ai-prose h2 { font-family:'Playfair Display',serif; font-size:22px; color:var(--tvtt-gold); margin:28px 0 14px; padding-bottom:10px; border-bottom:1px solid rgba(201,168,76,.2); }
.kq-ai-prose p  { margin-bottom:1em; }
.kq-ai-prose strong { color:var(--tvtt-gold-light); font-weight:600; }
.kq-ai-prose ul,ol { padding-left:1.4em; margin-bottom:1em; }
.kq-ai-prose li { margin-bottom:.5em; }
.kq-ai-prose .report-subtitle { font-size:12px; color:var(--tvtt-text-dim); font-style:italic; letter-spacing:.06em; margin-bottom:24px; text-align:center; }
.kq-ai-loading { text-align:center; padding:40px 20px; }
.kq-ai-loading .kq-loading-ring { margin:0 auto 14px; }
.kq-ai-loading p { font-family:'Playfair Display',serif; font-style:italic; color:var(--tvtt-text-muted); animation:tvtt-pulse 1.8s ease-in-out infinite; }
.kq-ai-error { background:rgba(139,26,26,.1); border:1px solid rgba(139,26,26,.3); border-radius:10px; padding:20px; text-align:center; }
.kq-ai-error h4 { font-family:'Playfair Display',serif; color:#f87171; margin-bottom:8px; }
.kq-ai-error p  { font-size:13px; color:var(--tvtt-text-muted); }

/* Summary tab */
.kq-summary-card {
  background:var(--tvtt-bg-card); border:1px solid var(--tvtt-border);
  border-radius:20px; padding:28px; box-shadow:var(--tvtt-shadow);
}
.kq-sum-table { width:100%; border-collapse:collapse; font-size:14px; }
.kq-sum-table td { padding:10px 14px; border-bottom:.5px solid var(--tvtt-border); vertical-align:top; line-height:1.5; color:var(--tvtt-text-muted); }
.kq-sum-table tr:last-child td { border-bottom:none; }
.kq-sum-table td:first-child { font-weight:500; white-space:nowrap; width:36%; color:#8a8070; }
.kq-sum-table td:last-child { color:#d8d0c0; }
.kq-sum-table .hl { color:var(--tvtt-gold); font-weight:600; }
.sao-chip { display:inline-flex; align-items:center; gap:4px; background:var(--tvtt-bg-hover); border:.5px solid var(--tvtt-border); border-radius:5px; padding:2px 7px; font-size:12px; color:var(--tvtt-text-muted); margin:2px 3px 2px 0; }
.sao-chip .sc { color:var(--tvtt-text); font-weight:500; }

/* Save / Email modal */
.kq-modal {
  position:fixed; inset:0; z-index:9000;
  background:rgba(0,0,0,.75); backdrop-filter:blur(5px);
  display:flex; align-items:center; justify-content:center; padding:20px;
  animation:tvtt-fade .2s ease;
}
@keyframes tvtt-fade { from{opacity:0} to{opacity:1} }
.kq-modal-box {
  background:var(--tvtt-bg-card); border:1px solid var(--tvtt-border);
  border-radius:20px; padding:32px; max-width:420px; width:100%;
}
.kq-modal-title { font-family:'Playfair Display',serif; font-size:22px; color:var(--tvtt-gold); margin-bottom:12px; }
.kq-modal-desc  { font-size:14px; color:var(--tvtt-text-muted); margin-bottom:20px; line-height:1.6; }
.kq-modal-label { font-size:12px; font-weight:600; letter-spacing:.08em; text-transform:uppercase; color:var(--tvtt-text-muted); display:block; margin-bottom:7px; }
.kq-modal-input {
  width:100%; padding:11px 15px; background:var(--tvtt-bg-input);
  border:1px solid var(--tvtt-border); border-radius:var(--tvtt-radius-sm);
  color:var(--tvtt-text); font-family:'Inter',sans-serif; font-size:15px; outline:none;
  transition:border-color .2s; margin-bottom:20px;
}
.kq-modal-input:focus { border-color:var(--tvtt-gold-dim); }
.kq-modal-input::placeholder { color:var(--tvtt-text-dim); }
.kq-modal-status { padding:10px 14px; border-radius:8px; font-size:13px; font-weight:500; margin-bottom:14px; }
.kq-modal-status.ok  { background:rgba(29,158,117,.15); color:#4ade80; border:.5px solid rgba(29,158,117,.3); }
.kq-modal-status.err { background:rgba(139,26,26,.15); color:#fca5a5; border:.5px solid rgba(139,26,26,.3); }
.kq-modal-actions { display:flex; gap:10px; justify-content:flex-end; }
.kq-modal-cancel {
  padding:10px 20px; border:.5px solid var(--tvtt-border); border-radius:var(--tvtt-radius-sm);
  background:transparent; color:var(--tvtt-text-muted); font-family:'Inter',sans-serif; font-size:14px; cursor:pointer;
}
.kq-modal-send {
  padding:10px 24px; background:linear-gradient(135deg,#c9a84c,#a07830);
  border:none; border-radius:var(--tvtt-radius-sm); color:#0a0a0f;
  font-family:'Playfair Display',serif; font-size:14px; font-weight:600; cursor:pointer;
  transition:.2s; display:flex; align-items:center; gap:8px;
}
.kq-modal-send:hover { filter:brightness(1.1); }
.kq-modal-send:disabled { opacity:.6; cursor:not-allowed; }

/* Upgrade CTA */
.kq-cta-section {
  margin-top:40px; padding:32px; text-align:center;
  background:var(--tvtt-bg-card); border:1px solid var(--tvtt-border);
  border-radius:20px; box-shadow:var(--tvtt-shadow);
}
.kq-cta-section h3 { font-size:20px; color:var(--tvtt-gold); margin-bottom:10px; }
.kq-cta-section p  { font-size:14px; color:var(--tvtt-text-muted); margin-bottom:20px; line-height:1.6; }

/* Result wrap */
.result-wrap { max-width:900px; margin:0 auto; padding:0 20px 60px; }

/* ─── Responsive ─── */
@media(max-width:560px) {
  .form-card { padding:22px 16px; border-radius:16px; }
  .date-row { grid-template-columns:1fr 1fr; }
  .date-row .year-field { grid-column:1 / -1; }
  .kq-result-header { padding:22px 18px; }
  .kq-tab-btn { padding:10px 14px; font-size:13px; }
  .kq-api-bar input { min-width:120px; }
  .la-so-grid { min-width:340px; }
  .cung-cell { min-height:90px; }
}
@media(max-width:400px) {
  .toggle-group { flex-direction:column; }
}