/* =====================================================
   File Share — mobile-first, fully responsive
   Mobile (default)  : Send / Receive tabs, single column, big tap targets
   Tablet  (>=600px) : buttons side by side, QR code visible
   Laptop  (>=900px) : tabs hidden, Send + Receive cards side by side
   Rules for phones  : inputs >=16px (no iOS zoom), buttons >=48px high,
                       long file names wrap, nothing ever scrolls sideways
   ===================================================== */

.fs-section{padding-top:6px;overflow-x:clip}
.fs-section [hidden]{display:none !important}
.fs-section *,.fs-section *::before,.fs-section *::after{box-sizing:border-box}
.fs-section button,.fs-section label,.fs-section a{-webkit-tap-highlight-color:transparent;touch-action:manipulation}

/* visually hidden (file input stays usable on iOS) */
.fs-sr{position:absolute;width:1px;height:1px;margin:-1px;padding:0;border:0;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

/* ---------- Heading ---------- */
.fs-head{text-align:center;max-width:680px;margin:0 auto 20px}
.fs-badge{display:inline-flex;align-items:center;justify-content:center;flex-wrap:wrap;gap:8px;max-width:100%;background:var(--black-soft);border:1px solid var(--gold);color:var(--gold);padding:6px 14px;border-radius:30px;font-size:clamp(.72rem,3.3vw,.85rem);font-weight:600;line-height:1.4;margin-bottom:12px}
.fs-title{font-size:clamp(1.6rem,7vw,2.3rem);font-weight:700;line-height:1.2;margin:0 0 8px;text-align:center}
.fs-title span{color:var(--gold)}
.fs-sub{color:var(--text-muted);font-size:clamp(.84rem,3.6vw,.98rem);line-height:1.6;margin:0 auto;max-width:560px;text-align:center}

/* ---------- Alert ---------- */
.fs-alert{display:none;max-width:700px;margin:0 auto 14px;background:rgba(255,107,107,.1);border:1px solid rgba(255,107,107,.35);color:#ff9d9d;padding:12px 16px;border-radius:10px;font-size:.9rem;line-height:1.5;text-align:center;overflow-wrap:anywhere}
.fs-alert.show{display:block}
.fs-alert.ok{background:rgba(46,204,113,.1);border-color:rgba(46,204,113,.35);color:#7be3a5}

/* ---------- Tabs (phone / tablet) ---------- */
.fs-tabs{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:6px;max-width:520px;margin:0 auto 14px;padding:5px;background:var(--black-soft);border:1px solid var(--card-border);border-radius:14px}
.fs-tab{display:flex;align-items:center;justify-content:center;gap:8px;min-height:48px;padding:8px 10px;background:transparent;border:0;border-radius:10px;color:var(--text-muted);font-family:inherit;font-size:1rem;font-weight:700;cursor:pointer;transition:var(--transition-fast)}
.fs-tab.active{background:var(--gold);color:#000}

/* ---------- Layout ---------- */
.fs-grid{display:grid;grid-template-columns:minmax(0,1fr);gap:14px;align-items:start;max-width:520px;margin:0 auto}
.fs-panel{display:none}
.fs-panel.active{display:block}

/* ---------- Cards ---------- */
.fs-card{background:var(--card-bg);border:1px solid var(--card-border);border-radius:var(--radius);padding:16px;min-width:0}
.fs-card-title{display:flex;align-items:center;gap:8px;font-weight:700;font-size:1rem;color:var(--text-light);margin-bottom:14px}
.fs-card-title i{color:var(--gold)}

/* ---------- Drop zone ---------- */
.fs-drop{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;min-height:160px;padding:22px 14px;text-align:center;background:rgba(255,255,255,.02);border:2px dashed var(--card-border);border-radius:14px;cursor:pointer;transition:var(--transition-fast);color:var(--text-light)}
.fs-drop i{font-size:2.2rem;color:var(--gold);margin-bottom:6px}
.fs-drop strong{font-size:1.1rem}
.fs-drop-sub{display:none;color:var(--text-muted);font-size:.88rem}
.fs-drop em{font-style:normal;color:var(--text-faint);font-size:.8rem;margin-top:6px}
.fs-drop:hover,.fs-drop.drag,.fs-sr:focus-visible + .fs-drop{border-color:var(--gold);background:var(--gold-glow-soft)}

/* ---------- File list ---------- */
.fs-files{list-style:none;margin:12px 0 0;padding:0;display:flex;flex-direction:column;gap:8px}
.fs-files:empty{display:none}
.fs-file{display:flex;align-items:center;gap:10px;min-width:0;padding:10px 10px 10px 12px;background:var(--black-soft);border:1px solid var(--card-border);border-radius:12px}
.fs-file-ico{flex:0 0 auto;width:34px;text-align:center;font-size:1.3rem;color:var(--gold)}
.fs-file-info{flex:1 1 0;min-width:0;display:flex;flex-direction:column;gap:2px}
.fs-file-name{font-size:.92rem;font-weight:600;color:var(--text-light);line-height:1.35;overflow-wrap:anywhere;word-break:break-word;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.fs-file-size{font-size:.78rem;color:var(--text-muted)}
.fs-file-x{flex:0 0 auto;display:flex;align-items:center;justify-content:center;width:44px;height:44px;margin:-4px -2px -4px 0;background:transparent;border:0;border-radius:10px;color:var(--text-muted);font-size:1rem;cursor:pointer}
.fs-file-x:hover{color:var(--danger)}
.fs-file-x:disabled{opacity:.35;cursor:not-allowed}

/* download rows (receiver): name on top, big button underneath on phones */
.fs-files-dl .fs-file{flex-wrap:wrap}
.fs-files-dl .fs-file-info{flex:1 1 calc(100% - 50px)}
.fs-dl{flex:1 1 100%}

.fs-summary{display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap;margin:12px 0 0;font-size:.85rem;color:var(--text-muted)}
.fs-link-btn{background:none;border:0;padding:10px 4px;min-height:44px;color:var(--gold);font-family:inherit;font-size:.88rem;font-weight:600;cursor:pointer;text-decoration:underline}
.fs-danger-text{color:var(--danger)}

/* ---------- Buttons ---------- */
.fs-btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:50px;padding:12px 16px;border:1px solid transparent;border-radius:12px;font-family:inherit;font-size:1rem;font-weight:700;line-height:1.2;text-align:center;text-decoration:none;cursor:pointer;transition:var(--transition-fast);max-width:100%}
.fs-block{display:flex;width:100%;margin-top:14px}
.fs-btn-primary{background:var(--gold);color:#000;box-shadow:0 6px 20px var(--gold-glow-soft)}
.fs-btn-primary:hover{background:var(--gold-light)}
.fs-btn-ghost{background:transparent;border-color:var(--card-border);color:var(--text-light)}
.fs-btn-ghost:hover{border-color:var(--gold);color:var(--gold)}
.fs-btn-danger{background:transparent;border-color:rgba(255,107,107,.4);color:var(--danger)}
.fs-btn-danger:hover{background:rgba(255,107,107,.1)}
.fs-btn:disabled,.fs-btn[aria-disabled="true"]{opacity:.45;cursor:not-allowed;box-shadow:none;pointer-events:none}
.fs-btn-row{display:grid;grid-template-columns:minmax(0,1fr);gap:10px;margin-top:14px}

/* ---------- Progress ---------- */
.fs-progress{margin-top:16px}
.fs-bar{height:12px;background:var(--black-soft);border:1px solid var(--card-border);border-radius:99px;overflow:hidden}
.fs-bar-fill{height:100%;width:0;background:linear-gradient(90deg,var(--gold-dark),var(--gold));border-radius:99px;transition:width .2s ease}
.fs-prog-row{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:6px;font-size:.85rem;color:var(--text-muted)}

/* ---------- Code (sender) ---------- */
.fs-done-label{text-align:center;color:var(--text-muted);font-size:.85rem;margin-bottom:8px}
.fs-code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:clamp(2.2rem,14vw,3.6rem);font-weight:800;letter-spacing:.14em;padding:14px 8px 14px calc(8px + .14em);text-align:center;color:var(--gold);background:var(--black-soft);border:2px dashed var(--gold);border-radius:14px;line-height:1.1;user-select:all;-webkit-user-select:all}
.fs-code.expired{color:var(--text-faint);border-color:var(--card-border);text-decoration:line-through}
.fs-timer{display:flex;align-items:center;justify-content:center;gap:8px;width:max-content;max-width:100%;margin:12px auto 0;padding:6px 14px;background:var(--gold-glow-soft);border:1px solid var(--glass-border);border-radius:99px;color:var(--gold);font-size:.9rem;font-weight:600;font-variant-numeric:tabular-nums}
.fs-timer.expired{background:rgba(255,107,107,.1);border-color:rgba(255,107,107,.35);color:var(--danger)}

/* QR: sirf tablet/laptop par (phone par apni screen khud scan nahi hoti) */
.fs-qr-wrap{display:flex;flex-direction:column;align-items:center;gap:8px;margin-top:16px;text-align:center}
.fs-qr{background:#fff;padding:10px;border-radius:12px;line-height:0;max-width:100%}
.fs-qr canvas{max-width:100%;height:auto !important}
.fs-qr-wrap p{margin:0;color:var(--text-muted);font-size:.8rem;max-width:280px}
/* hidden attribute must win over display:flex (QR chhupta hai jab share expire ho) */
.fs-qr-wrap[hidden]{display:none}

/* ---------- Receive ---------- */
.fs-label{display:block;font-size:.85rem;color:var(--text-muted);font-weight:600;margin-bottom:8px}
.fs-code-input{display:block;width:100%;min-width:0;min-height:68px;padding:10px 8px 10px calc(8px + .3em);background:rgba(255,255,255,.03);border:2px solid var(--card-border);border-radius:14px;color:var(--gold);font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:clamp(1.8rem,10vw,2.6rem);font-weight:800;letter-spacing:.3em;text-align:center;outline:none;-webkit-appearance:none;appearance:none}
.fs-code-input::placeholder{color:var(--text-faint);opacity:.5}
.fs-code-input:focus{border-color:var(--gold)}

/* ---------- Note ---------- */
.fs-note{max-width:520px;margin:16px auto 0;color:var(--text-faint);font-size:.8rem;line-height:1.6;text-align:center}
.fs-note i{color:var(--gold);margin-right:4px}

/* =====================================================
   Tablet
   ===================================================== */
@media (min-width:600px){
  .fs-card{padding:22px}
  .fs-drop{min-height:190px}
  .fs-drop-sub{display:block}
  .fs-btn-row{grid-template-columns:repeat(2,minmax(0,1fr))}
  .fs-files-dl .fs-file{flex-wrap:nowrap}
  .fs-files-dl .fs-file-info{flex:1 1 0}
  .fs-dl{flex:0 0 auto}
}

/* =====================================================
   Laptop / desktop: tabs hide, dono cards saath saath
   ===================================================== */
@media (min-width:900px){
  .fs-tabs{display:none}
  .fs-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;max-width:960px}
  .fs-panel,.fs-panel.active{display:block}
  .fs-note{max-width:960px}
  .fs-card{padding:26px}
}

/* Bahut chhoti screens (320px) */
@media (max-width:359px){
  .fs-card{padding:12px}
  .fs-btn{font-size:.92rem;padding:10px 12px}
  .fs-code{letter-spacing:.08em}
}

@media (prefers-reduced-motion:reduce){
  .fs-bar-fill,.fs-btn,.fs-drop{transition:none}
}


/* =====================================================
   NEW: Files/Text switch, text box, text viewer, QR scanner
   (mobile-first; tablet >=600px; laptop >=900px)
   ===================================================== */

.fs-section{padding-bottom:max(8px,env(safe-area-inset-bottom));-webkit-text-size-adjust:100%;text-size-adjust:100%}
.fs-section img,.fs-section video,.fs-section canvas{max-width:100%}

/* ---------- Files / Text switch ---------- */
.fs-seg{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:6px;padding:5px;margin-bottom:14px;background:var(--black-soft);border:1px solid var(--card-border);border-radius:14px}
.fs-seg-btn{display:flex;align-items:center;justify-content:center;gap:8px;min-height:46px;padding:8px 10px;background:transparent;border:0;border-radius:10px;color:var(--text-muted);font-family:inherit;font-size:.98rem;font-weight:700;cursor:pointer;transition:var(--transition-fast)}
.fs-seg-btn.active{background:var(--gold);color:#000}
.fs-seg-btn:disabled{opacity:.5;cursor:not-allowed}
.fs-seg-btn:focus-visible,.fs-tab:focus-visible,.fs-btn:focus-visible,.fs-link-btn:focus-visible,.fs-textview:focus-visible{outline:2px solid var(--gold);outline-offset:2px}

/* ---------- Text input ---------- */
.fs-textarea{display:block;width:100%;min-width:0;min-height:160px;max-height:60vh;padding:14px;background:rgba(255,255,255,.03);border:2px solid var(--card-border);border-radius:14px;color:var(--text-light);font-family:inherit;font-size:16px;line-height:1.6;resize:vertical;outline:none;-webkit-appearance:none;appearance:none;overflow-wrap:anywhere}
.fs-textarea::placeholder{color:var(--text-faint)}
.fs-textarea:focus{border-color:var(--gold)}
.fs-textarea:disabled{opacity:.6}
.fs-text-meta{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:6px;font-size:.8rem;color:var(--text-muted);font-variant-numeric:tabular-nums}
.fs-text-meta .fs-link-btn:disabled{opacity:.4;cursor:not-allowed}

/* ---------- Received text ---------- */
.fs-textview-label{margin:14px 0 8px}
.fs-textview{margin:0;padding:14px;max-height:min(50vh,420px);overflow:auto;-webkit-overflow-scrolling:touch;background:var(--black-soft);border:1px solid var(--card-border);border-radius:14px;color:var(--text-light);font-size:.98rem;line-height:1.7;white-space:pre-wrap;overflow-wrap:anywhere;word-break:break-word;user-select:text;-webkit-user-select:text}

/* ---------- "ya" divider ---------- */
.fs-or{display:flex;align-items:center;gap:12px;margin:18px 0 14px;color:var(--text-faint);font-size:.82rem;font-weight:600}
.fs-or::before,.fs-or::after{content:"";flex:1 1 0;height:1px;background:var(--card-border)}
.fs-or span{flex:0 1 auto;text-align:center}

/* ---------- Scan buttons ---------- */
.fs-scan-row{display:grid;grid-template-columns:minmax(0,1fr);gap:10px}
.fs-scan-row .fs-btn{width:100%;margin:0}
.fs-scan-row label.fs-btn{cursor:pointer}

/* ---------- Scanner ---------- */
.fs-scan{margin-top:16px}
.fs-scan-view{position:relative;width:min(100%,62vh);aspect-ratio:1/1;margin:0 auto;background:#000;border:1px solid var(--card-border);border-radius:16px;overflow:hidden}
.fs-scan-view video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;background:#000}
.fs-scan-frame{position:absolute;inset:16%;border:3px solid var(--gold);border-radius:18px;box-shadow:0 0 0 100vmax rgba(0,0,0,.4);pointer-events:none}
.fs-scan-status{min-height:2.8em;margin:10px 0 0;color:var(--text-muted);font-size:.88rem;line-height:1.5;text-align:center;overflow-wrap:anywhere}
.fs-scan .fs-block{margin-top:6px}

/* ---------- Tablet ---------- */
@media (min-width:480px){
  .fs-scan-row{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (min-width:600px){
  .fs-textarea{min-height:190px}
  .fs-scan-view{width:min(100%,340px)}
}

/* ---------- Laptop ---------- */
@media (min-width:900px){
  .fs-textarea{min-height:200px}
  .fs-scan-view{width:min(100%,320px)}
}

/* ---------- Bahut chhoti screens (320px) ---------- */
@media (max-width:359px){
  .fs-seg-btn{font-size:.9rem;gap:6px;padding:8px 6px}
  .fs-textarea{padding:12px}
  .fs-textview{padding:12px;font-size:.92rem}
}

/* ---------- Landscape phone: scanner screen se bahar na jaye ---------- */
@media (max-height:480px) and (orientation:landscape){
  .fs-scan-view{width:min(100%,56vh)}
}

@media (prefers-reduced-motion:reduce){
  .fs-seg-btn{transition:none}
}