/* sahayai_design_system.css — Sire 2026-05-23 master rules.
 *
 * One stylesheet, every page. Navy #002366 header, tricolour stripe,
 * F7F7F4 background, white cards (14 px radius, 1.5 px border), 18 px
 * minimum font, 48 px minimum tap target, mobile 375 px first.
 *
 * Use:
 *   <link rel="stylesheet" href="sahayai_design_system.css">
 *
 * Helper classes:
 *   .sds-page              page shell
 *   .sds-tricolour         stripe (3-band, fixed)
 *   .sds-header            navy header
 *   .sds-tabs              5-tab bottom nav (or top, both supported)
 *   .sds-card              base card
 *   .sds-card-toolbar      🔊 ▶ 👍 👎 row
 *   .sds-toggle            2-button mode switch
 *   .sds-input / .sds-textarea / .sds-select
 *   .sds-btn / .primary / .accent / .ghost / .danger
 *   .sds-chip              status pill
 *   .sds-health-card       three-state (green/yellow/red)
 *   .sds-empty             welcoming-empty-state
 *   .sds-mic-hero          big green mic
 *   .sds-fb-panel          per-card 👎 feedback box
 */
:root {
  --sds-saffron:#FF6913;
  --sds-white:#FFFFFF;
  --sds-green:#046A38;
  --sds-navy:#002366;
  --sds-bg:#F7F7F4;
  --sds-dark:#212121;
  --sds-muted:#555555;
  --sds-line:#E0E0E0;
  --sds-line-strong:#BDBDBD;
  --sds-amber:#F59E0B;
  --sds-red:#C62828;
  --sds-fb-yellow:#FFF8E1;
}

*{box-sizing:border-box}
html,body{margin:0;padding:0;background:var(--sds-bg);color:var(--sds-dark);font-family:Inter,'Segoe UI',Arial,sans-serif;font-size:18px;line-height:1.5}
body{min-height:100vh}

/* Tricolour stripe under header — fixed at top */
.sds-tricolour{height:6px;background:linear-gradient(90deg,var(--sds-saffron) 0 33.3%,var(--sds-white) 33.3% 66.6%,var(--sds-green) 66.6% 100%)}
.sds-tricolour.fixed{position:fixed;top:0;left:0;right:0;z-index:9999;pointer-events:none}

/* Navy header */
.sds-header{background:var(--sds-navy);color:#fff;padding:14px 16px 14px;border-radius:0 0 18px 18px}
.sds-header .sds-brand-row{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.sds-header .sds-logo{width:48px;height:48px;border-radius:12px;background:linear-gradient(135deg,var(--sds-saffron),var(--sds-green));display:inline-flex;align-items:center;justify-content:center;font-size:24px;flex-shrink:0;color:#fff;font-weight:900;box-shadow:0 6px 20px rgba(0,0,0,.25)}
.sds-header .sds-brand{flex:1;min-width:0}
.sds-header .sds-brand-name{font-size:22px;font-weight:900;line-height:1.15}
.sds-header .sds-tagline{font-size:14px;color:rgba(255,255,255,.85);margin-top:4px;line-height:1.4}
.sds-header .sds-header-actions{display:flex;gap:8px;margin-top:10px;flex-wrap:wrap;align-items:center}
.sds-header .sds-header-actions .sds-select,
.sds-header .sds-header-actions button{background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.30);color:#fff;font-size:13px;font-weight:700;padding:8px 12px;border-radius:10px;cursor:pointer;min-height:40px}
.sds-header .sds-header-actions button.primary{background:var(--sds-saffron);border-color:var(--sds-saffron)}

/* Main column */
.sds-page main{padding:14px 14px 110px;max-width:560px;margin:0 auto}

/* Card */
.sds-card{background:#fff;border:1.5px solid var(--sds-line);border-radius:14px;padding:16px;margin:0 0 14px;box-shadow:0 4px 12px rgba(0,0,0,.04)}
.sds-card-title{font-size:20px;font-weight:900;color:var(--sds-navy);margin:0 0 6px;display:flex;align-items:center;gap:8px}
.sds-card-title .ico{font-size:24px}
.sds-card-sub{font-size:15px;color:var(--sds-muted);line-height:1.55;margin:0 0 12px}

/* Card toolbar — 🔊 ▶ Demo 👍 👎 — every card */
.sds-card-toolbar{display:flex;gap:6px;margin-top:12px;flex-wrap:wrap;align-items:center;padding-top:10px;border-top:1px dashed var(--sds-line)}
.sds-card-toolbar button{background:#fff;border:1px solid var(--sds-line);border-radius:10px;padding:8px 12px;font-size:14px;font-weight:700;cursor:pointer;min-height:42px;display:inline-flex;align-items:center;gap:4px;color:var(--sds-dark)}
.sds-card-toolbar button:hover{border-color:var(--sds-green)}
.sds-card-toolbar button.demo{background:var(--sds-saffron);color:#fff;border-color:var(--sds-saffron)}
.sds-card-toolbar button.fb-pos:active{background:#dcfce7}
.sds-card-toolbar button.fb-neg:active{background:#fee2e2}
.sds-card-toolbar .sep{flex:1}

/* Per-card 👎 feedback panel */
.sds-fb-panel{display:none;margin-top:10px;padding:12px;background:var(--sds-fb-yellow);border:1.5px solid var(--sds-saffron);border-radius:10px}
.sds-fb-panel.shown{display:block}
.sds-fb-panel textarea{width:100%;min-height:64px;border:1.5px solid var(--sds-line);border-radius:8px;padding:10px;font-family:inherit;font-size:16px;resize:vertical}
.sds-fb-panel .actions{display:flex;gap:8px;margin-top:8px}
.sds-fb-panel .actions button{flex:1;background:var(--sds-green);color:#fff;border:none;border-radius:8px;padding:12px;font-weight:800;cursor:pointer;font-size:15px;min-height:46px}
.sds-fb-panel .actions button.cancel{background:#fff;color:var(--sds-dark);border:1.5px solid var(--sds-line)}

/* Buttons */
.sds-btn{background:#fff;border:1.5px solid var(--sds-line);border-radius:12px;padding:12px 18px;font-size:16px;font-weight:800;cursor:pointer;color:var(--sds-dark);min-height:48px;display:inline-flex;align-items:center;justify-content:center;gap:6px}
.sds-btn.primary{background:var(--sds-green);color:#fff;border-color:var(--sds-green)}
.sds-btn.accent{background:var(--sds-saffron);color:#fff;border-color:var(--sds-saffron)}
.sds-btn.ghost{background:#fff;color:var(--sds-navy);border-color:var(--sds-line)}
.sds-btn.danger{background:var(--sds-red);color:#fff;border-color:var(--sds-red)}
.sds-btn.block{display:flex;width:100%}
.sds-btn:active{transform:scale(.97)}

/* Inputs */
.sds-input,.sds-textarea,.sds-select{width:100%;background:#fff;border:1.5px solid var(--sds-line);border-radius:12px;padding:12px 14px;font-size:16px;color:var(--sds-dark);min-height:48px;font-family:inherit}
.sds-textarea{min-height:96px;resize:vertical}
.sds-input:focus,.sds-textarea:focus,.sds-select:focus{outline:none;border-color:var(--sds-green)}

/* Field rows */
.sds-field{display:flex;flex-direction:column;gap:6px;margin-bottom:12px}
.sds-field label{font-size:15px;font-weight:700;color:var(--sds-navy)}

/* Bottom tab nav — 5 tabs, fixed */
.sds-tabs{position:fixed;left:0;right:0;bottom:0;background:#fff;border-top:1px solid var(--sds-line);display:flex;height:78px;z-index:600;box-shadow:0 -4px 16px rgba(0,0,0,.08)}
.sds-tabs button{flex:1;background:transparent;border:none;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;cursor:pointer;color:#666;font-size:12px;font-weight:700;padding:6px 2px;min-height:78px;min-width:60px;-webkit-tap-highlight-color:transparent}
.sds-tabs button .ico{font-size:24px;line-height:1;transition:transform .15s}
.sds-tabs button.active{color:var(--sds-saffron)}
.sds-tabs button.active .ico{transform:scale(1.15)}
.sds-tabs button.alert .ico{color:var(--sds-red)}

/* Tab panel */
.sds-tab-panel{display:none;animation:sdsFade .2s ease-out}
.sds-tab-panel.active{display:block}
@keyframes sdsFade{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}

/* Mode toggle (AI Samachar / AI Coach) */
.sds-toggle{display:flex;background:#fff;border:1.5px solid var(--sds-line);border-radius:14px;padding:4px;gap:4px;margin:0 0 14px}
.sds-toggle button{flex:1;border:none;background:transparent;padding:14px;font-size:16px;font-weight:800;color:var(--sds-muted);cursor:pointer;border-radius:10px;min-height:48px}
.sds-toggle button.active{background:var(--sds-navy);color:#fff}

/* Status chip */
.sds-chip{display:inline-flex;align-items:center;gap:4px;padding:4px 10px;border-radius:999px;font-size:13px;font-weight:800;letter-spacing:.02em}
.sds-chip.green{background:#dcfce7;color:#14532d;border:1px solid #86efac}
.sds-chip.amber{background:#fef3c7;color:#78350f;border:1px solid #fcd34d}
.sds-chip.red{background:#fee2e2;color:#7f1d1d;border:1px solid #fca5a5}
.sds-chip.live{background:var(--sds-saffron);color:#fff}
.sds-chip.beta{background:#fef3c7;color:#78350f;border:1px solid #fcd34d}
.sds-chip.p3{background:#e0e7ff;color:#3730a3;border:1px solid #c7d2fe}

/* Three-state health card */
.sds-health-card{display:flex;align-items:center;gap:14px;padding:18px;border-radius:16px;color:#fff;font-weight:800;font-size:18px}
.sds-health-card.green{background:linear-gradient(135deg,var(--sds-green),#22c55e)}
.sds-health-card.amber{background:linear-gradient(135deg,#d97706,#f59e0b);color:#fff}
.sds-health-card.red{background:linear-gradient(135deg,#991b1b,#dc2626)}
.sds-health-card .ico{font-size:42px;line-height:1}
.sds-health-card .label{font-size:22px;font-weight:900}
.sds-health-card .sub{font-size:14px;font-weight:600;opacity:.92}

/* Welcoming empty state */
.sds-empty{text-align:center;padding:28px 16px;background:#fff;border:1.5px dashed var(--sds-line-strong);border-radius:18px}
.sds-empty .big{font-size:64px;line-height:1;margin-bottom:10px}
.sds-empty .title{font-size:22px;font-weight:900;color:var(--sds-navy);margin-bottom:6px}
.sds-empty .sub{font-size:16px;color:var(--sds-muted);line-height:1.55;margin-bottom:16px}
.sds-empty .quote{display:inline-block;background:var(--sds-bg);border:1px dashed var(--sds-saffron);border-radius:12px;padding:10px 14px;font-size:15px;color:var(--sds-dark);margin-bottom:14px;max-width:340px}

/* Big green mic for diagnosis tab */
.sds-mic-hero{display:flex;flex-direction:column;align-items:center;gap:14px;padding:24px 12px;background:linear-gradient(180deg,#fff,#f0f8f0);border:1.5px solid var(--sds-line);border-radius:18px;margin-bottom:14px}
.sds-mic-btn{width:160px;height:160px;border-radius:50%;background:linear-gradient(135deg,var(--sds-saffron),var(--sds-green));color:#fff;border:none;font-size:72px;cursor:pointer;display:flex;align-items:center;justify-content:center;box-shadow:0 14px 40px rgba(4,106,56,.40)}
.sds-mic-btn:focus-visible{outline:3px solid var(--sds-saffron);outline-offset:4px}
.sds-mic-btn.listening{background:var(--sds-red);animation:sdsPulse 1.2s ease-in-out infinite}
@keyframes sdsPulse{0%,100%{opacity:1}50%{opacity:.6}}
.sds-mic-hint{font-size:17px;color:var(--sds-dark);text-align:center;font-weight:600;line-height:1.55;max-width:420px}

/* Diagnosis bubble */
.sds-bubble{padding:14px 16px;border-radius:14px;margin:10px 0;font-size:17px;line-height:1.55;color:var(--sds-dark)}
.sds-bubble.user{background:#fff;border:1.5px solid var(--sds-line);align-self:flex-end}
.sds-bubble.chitti{background:linear-gradient(180deg,#f0f8f0,#fff);border:1.5px solid var(--sds-green)}
.sds-bubble.warn{background:#fff8e1;border:1.5px solid var(--sds-amber)}
.sds-bubble.safety{background:#fee2e2;border:1.5px solid var(--sds-red);color:#7f1d1d;font-weight:800}
.sds-bubble .who{display:block;font-size:13px;font-weight:800;color:var(--sds-green);margin-bottom:4px}
.sds-bubble.warn .who{color:var(--sds-amber)}
.sds-bubble.safety .who{color:var(--sds-red)}

/* Document row */
.sds-doc-row{display:flex;align-items:center;gap:12px;padding:14px;background:#fff;border:1.5px solid var(--sds-line);border-radius:14px;margin-bottom:10px}
.sds-doc-row .ico{font-size:28px;line-height:1}
.sds-doc-row .info{flex:1;min-width:0}
.sds-doc-row .name{font-size:17px;font-weight:800;color:var(--sds-navy)}
.sds-doc-row .meta{font-size:13px;color:var(--sds-muted);margin-top:2px}
.sds-doc-row .right{display:flex;flex-direction:column;align-items:flex-end;gap:6px}

/* Alert row */
.sds-alert-row{display:flex;align-items:flex-start;gap:12px;padding:14px;border-radius:14px;margin-bottom:10px;border:1.5px solid}
.sds-alert-row.red{background:linear-gradient(180deg,#fee2e2,#fff);border-color:#fca5a5}
.sds-alert-row.amber{background:linear-gradient(180deg,#fef3c7,#fff);border-color:#fcd34d}
.sds-alert-row .ico{font-size:26px;line-height:1}
.sds-alert-row .info{flex:1;min-width:0}
.sds-alert-row .name{font-size:17px;font-weight:800;color:var(--sds-navy)}
.sds-alert-row .desc{font-size:14px;color:#444;margin-top:2px;line-height:1.5}
.sds-alert-row button{align-self:center}

/* Friendly error banner (shared) */
.sds-err{position:fixed;left:14px;right:14px;bottom:90px;max-width:540px;margin:0 auto;background:var(--sds-fb-yellow);border:2px solid var(--sds-saffron);border-radius:16px;padding:14px 16px;display:flex;align-items:center;gap:12px;z-index:700;font-size:16px;color:var(--sds-dark);box-shadow:0 14px 36px rgba(0,0,0,.18)}
.sds-err.hidden{display:none}

/* Course / coach card */
.sds-track{background:#fff;border:1.5px solid var(--sds-line);border-radius:14px;padding:14px;margin-bottom:10px}
.sds-track .title{font-size:18px;font-weight:800;color:var(--sds-navy);margin-bottom:4px}
.sds-track .meta{font-size:13px;color:var(--sds-muted)}
.sds-track .progress{height:8px;background:#eee;border-radius:4px;margin-top:8px;overflow:hidden}
.sds-track .progress > div{height:100%;background:linear-gradient(90deg,var(--sds-green),#22c55e);transition:width .3s}

/* Certificate */
.sds-cert{background:linear-gradient(180deg,#fff,#f0f8f0);border:3px double var(--sds-saffron);border-radius:18px;padding:24px 18px;text-align:center;color:var(--sds-navy)}
.sds-cert .sahayai-mark{font-size:14px;letter-spacing:.12em;font-weight:800;color:var(--sds-saffron);text-transform:uppercase}
.sds-cert .cert-title{font-size:26px;font-weight:900;color:var(--sds-navy);margin:8px 0 4px}
.sds-cert .cert-user{font-size:20px;font-weight:800;color:var(--sds-dark);margin:14px 0 8px}
.sds-cert .cert-track{font-size:16px;color:var(--sds-muted);line-height:1.5;margin-bottom:14px}
.sds-cert .qr{width:120px;height:120px;margin:8px auto;display:block;border:1.5px solid var(--sds-line);border-radius:10px;padding:6px;background:#fff}
.sds-cert .cert-meta{font-family:'JetBrains Mono',monospace;font-size:12px;color:var(--sds-muted);margin-top:8px}

/* News-AI specific bits */
.sds-story{background:#fff;border:1.5px solid var(--sds-line);border-radius:14px;padding:16px;margin-bottom:12px}
.sds-story .head{font-size:20px;font-weight:800;color:var(--sds-navy);line-height:1.4}
.sds-story .src{font-size:12px;color:var(--sds-muted);margin-top:4px}
.sds-story ul.bullets{margin:10px 0 0;padding-left:20px;font-size:16px;color:var(--sds-dark);line-height:1.55}
.sds-story ul.bullets li{margin-bottom:4px}
.sds-story .samjhao{display:none;margin-top:10px;padding:12px;background:linear-gradient(180deg,#fffbe6,#fff);border:1.5px solid var(--sds-saffron);border-radius:12px;font-size:16px;line-height:1.6;color:var(--sds-dark)}
.sds-story.samjhao-open .samjhao{display:block}

/* Small phones */
@media (max-width:380px){
  .sds-mic-btn{width:140px;height:140px;font-size:60px}
  .sds-card{padding:14px}
  .sds-tabs button{font-size:11px}
  .sds-tabs button .ico{font-size:22px}
}

/* Body font-size scale */
body.sds-fs-115{font-size:20.7px}
body.sds-fs-130{font-size:23.4px}