/* ═══════════════════════════════════════════
   XFER — Style principal
   Palette : noir profond · blanc cassé · orange cuivre
═══════════════════════════════════════════ */

:root {
  --col-bg:       #0c0c0d;
  --col-surface:  #131315;
  --col-border:   #222226;
  --col-border2:  #2e2e34;
  --col-text:     #e8e6e1;
  --col-muted:    #666672;
  --col-dim:      #3a3a42;
  --col-accent:   #c9773a;
  --col-accent2:  #e8934d;
  --col-danger:   #b84040;
  --col-success:  #3d8a5e;
  --col-used:     #444;
  --radius:       3px;
  --font-head:    'Syne', sans-serif;
  --font-mono:    'DM Mono', monospace;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { font-size: 16px; -webkit-tap-highlight-color: transparent; }

body {
  background: var(--col-bg);
  color: var(--col-text);
  font-family: var(--font-mono);
  min-height: 100vh;
  overflow-x: hidden;
  line-height: 1.5;
}

/* ── Screens ─────────────────────────────── */
.screen { display: none; min-height: 100vh; }
.screen.active { display: block; }

/* ── AUTH ────────────────────────────────── */
.auth-bg {
  position: fixed; inset: 0; z-index: 0;
  background:
    radial-gradient(ellipse 60% 50% at 20% 60%, rgba(201,119,58,0.07) 0%, transparent 70%),
    radial-gradient(ellipse 50% 60% at 80% 30%, rgba(201,119,58,0.04) 0%, transparent 70%);
  pointer-events: none;
}

.auth-container {
  position: relative; z-index: 1;
  min-height: 100vh;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  padding: 2rem 1.5rem;
}

.brand-mark {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(2.8rem, 8vw, 4.5rem);
  letter-spacing: -0.03em;
  line-height: 1;
  margin-bottom: 0.4rem;
  user-select: none;
}
.brand-mark.sm { font-size: 1.4rem; margin-bottom: 0; }
.brand-x { color: var(--col-accent); }
.brand-fer { color: var(--col-text); }

.brand-sub {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--col-muted);
  letter-spacing: 0.04em;
  margin-bottom: 3rem;
  text-align: center;
}

.auth-card {
  width: 100%; max-width: 360px;
  background: var(--col-surface);
  border: 1px solid var(--col-border);
  padding: 2rem;
}

.field-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 500;
  color: var(--col-muted);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  display: block;
  margin-bottom: 0.6rem;
}

.input-wrap { margin-bottom: 0.5rem; }

.xfer-input {
  width: 100%;
  background: var(--col-bg);
  border: 1px solid var(--col-border2);
  color: var(--col-text);
  font-family: var(--font-mono);
  font-size: 0.95rem;
  padding: 0.75rem 1rem;
  outline: none;
  border-radius: var(--radius);
  transition: border-color 0.2s;
  -webkit-appearance: none;
}
.xfer-input:focus { border-color: var(--col-accent); }
.xfer-input::placeholder { color: var(--col-dim); }

.hint-text {
  font-size: 0.68rem;
  color: var(--col-dim);
  margin-bottom: 1.5rem;
  letter-spacing: 0.02em;
}

.btn-xfer {
  width: 100%;
  display: flex; align-items: center; justify-content: space-between;
  background: var(--col-accent);
  color: #0c0c0d;
  border: none;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 0.9rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 0.85rem 1.2rem;
  cursor: pointer;
  border-radius: var(--radius);
  transition: background 0.2s, transform 0.1s;
  -webkit-appearance: none;
}
.btn-xfer:active { transform: scale(0.98); }
.btn-xfer:hover { background: var(--col-accent2); }
.btn-arrow { font-size: 1.1rem; }

.error-msg {
  font-size: 0.75rem;
  color: var(--col-danger);
  margin-top: 0.75rem;
  min-height: 1rem;
}

/* ── HEADER ──────────────────────────────── */
.xfer-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(12,12,13,0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--col-border);
}
.header-inner {
  max-width: 780px; margin: auto;
  padding: 0.9rem 1.25rem;
  display: flex; align-items: center; justify-content: space-between;
}
.header-right { display: flex; align-items: center; gap: 0.75rem; }

.user-pill {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--col-accent);
  background: rgba(201,119,58,0.1);
  border: 1px solid rgba(201,119,58,0.25);
  padding: 0.25rem 0.75rem;
  border-radius: 100px;
  letter-spacing: 0.02em;
  max-width: 160px;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}

.btn-logout {
  background: none; border: 1px solid var(--col-border2);
  color: var(--col-muted); cursor: pointer;
  font-size: 1rem; width: 32px; height: 32px;
  display: flex; align-items: center; justify-content: center;
  border-radius: var(--radius);
  transition: all 0.2s; flex-shrink: 0;
}
.btn-logout:hover { border-color: var(--col-danger); color: var(--col-danger); }

/* ── MAIN ────────────────────────────────── */
.xfer-main {
  max-width: 780px; margin: auto;
  padding: 2rem 1.25rem 4rem;
  display: flex; flex-direction: column; gap: 2.5rem;
}

/* ── DROP ZONE ───────────────────────────── */
.upload-section { display: flex; flex-direction: column; gap: 1rem; }

.drop-zone {
  border: 1px dashed var(--col-border2);
  background: var(--col-surface);
  border-radius: var(--radius);
  cursor: pointer;
  transition: all 0.25s;
  position: relative; overflow: hidden;
}
.drop-zone::after {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(ellipse 80% 60% at 50% 120%, rgba(201,119,58,0.05) 0%, transparent 70%);
  pointer-events: none;
}
.drop-zone:hover, .drop-zone.drag-over {
  border-color: var(--col-accent);
  background: rgba(201,119,58,0.03);
}
.drop-zone.drag-over { transform: scale(1.01); }

.drop-inner {
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  padding: 3.5rem 2rem; text-align: center;
  gap: 0.5rem;
}

.drop-icon {
  width: 48px; height: 48px;
  color: var(--col-accent);
  margin-bottom: 0.75rem;
  opacity: 0.8;
}
.drop-icon svg { width: 100%; height: 100%; }

.drop-title {
  font-family: var(--font-head);
  font-weight: 700; font-size: 1rem;
  color: var(--col-text);
}
.drop-sub { font-size: 0.78rem; color: var(--col-muted); }
.drop-hint {
  font-size: 0.68rem; color: var(--col-dim);
  margin-top: 0.25rem;
  font-style: italic;
}

/* ── PROGRESS ────────────────────────────── */
.upload-progress {
  background: var(--col-surface);
  border: 1px solid var(--col-border);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
}
.progress-header {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 0.75rem;
}
.progress-filename {
  font-size: 0.8rem; color: var(--col-text);
  max-width: 70%; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.progress-pct {
  font-family: var(--font-head); font-weight: 700;
  font-size: 0.85rem; color: var(--col-accent);
}
.progress-bar-wrap {
  height: 3px; background: var(--col-border2);
  border-radius: 10px; overflow: hidden; margin-bottom: 0.6rem;
}
.progress-bar-fill {
  height: 100%; width: 0%;
  background: linear-gradient(90deg, var(--col-accent), var(--col-accent2));
  border-radius: 10px;
  transition: width 0.2s ease;
}
.progress-meta {
  display: flex; justify-content: space-between;
  font-size: 0.68rem; color: var(--col-muted);
}

/* ── RESULT ──────────────────────────────── */
.upload-result {
  background: var(--col-surface);
  border: 1px solid var(--col-border);
  border-left: 3px solid var(--col-accent);
  border-radius: var(--radius);
  padding: 1.5rem;
}
.result-label {
  font-size: 0.68rem; text-transform: uppercase;
  letter-spacing: 0.1em; color: var(--col-muted);
  margin-bottom: 0.75rem; font-weight: 500;
}
.link-row {
  display: flex; gap: 0.5rem; margin-bottom: 0.75rem;
}
.link-input {
  flex: 1; min-width: 0;
  background: var(--col-bg);
  border: 1px solid var(--col-border2);
  color: var(--col-accent);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  padding: 0.6rem 0.85rem;
  border-radius: var(--radius);
  outline: none;
  cursor: text;
}
.btn-copy {
  flex-shrink: 0;
  background: var(--col-accent);
  border: none; cursor: pointer;
  width: 38px; height: 38px;
  display: flex; align-items: center; justify-content: center;
  border-radius: var(--radius);
  transition: background 0.2s, transform 0.1s;
  color: #0c0c0d;
}
.btn-copy svg { width: 16px; height: 16px; }
.btn-copy:hover { background: var(--col-accent2); }
.btn-copy:active { transform: scale(0.93); }

.result-note {
  font-size: 0.68rem; color: var(--col-muted);
  margin-bottom: 1rem;
}
.btn-new {
  background: none; border: 1px solid var(--col-border2);
  color: var(--col-muted);
  font-family: var(--font-mono); font-size: 0.78rem;
  padding: 0.5rem 1rem; cursor: pointer;
  border-radius: var(--radius);
  transition: all 0.2s;
}
.btn-new:hover { border-color: var(--col-accent); color: var(--col-accent); }

/* ── FILE LIST ───────────────────────────── */
.files-section {}
.files-header {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 1rem;
}
.files-title {
  font-family: var(--font-head); font-weight: 700;
  font-size: 1rem; color: var(--col-text);
  letter-spacing: -0.01em;
}
.btn-refresh {
  background: none; border: 1px solid var(--col-border);
  color: var(--col-muted); cursor: pointer;
  width: 32px; height: 32px;
  display: flex; align-items: center; justify-content: center;
  border-radius: var(--radius); transition: all 0.2s;
}
.btn-refresh svg { width: 14px; height: 14px; }
.btn-refresh:hover { border-color: var(--col-accent); color: var(--col-accent); }
.btn-refresh.spinning svg { animation: spin 0.6s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

.file-list { display: flex; flex-direction: column; gap: 0.5rem; }

.files-empty {
  text-align: center; padding: 3rem;
  font-size: 0.78rem; color: var(--col-dim);
  border: 1px dashed var(--col-border);
  border-radius: var(--radius);
}

.file-item {
  background: var(--col-surface);
  border: 1px solid var(--col-border);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
  transition: border-color 0.2s;
  animation: slideIn 0.25s ease;
}
@keyframes slideIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}
.file-item:hover { border-color: var(--col-border2); }

.file-row1 {
  display: flex; align-items: flex-start;
  justify-content: space-between; gap: 0.75rem;
  margin-bottom: 0.6rem;
}
.file-name {
  font-family: var(--font-mono); font-size: 0.82rem;
  color: var(--col-text); font-weight: 400;
  word-break: break-all; flex: 1;
}
.file-actions { display: flex; gap: 0.35rem; flex-shrink: 0; }

.file-row2 {
  display: flex; align-items: center;
  gap: 0.75rem; flex-wrap: wrap;
}
.file-meta {
  font-size: 0.66rem; color: var(--col-dim);
  font-family: var(--font-mono);
}
.badge-status {
  display: inline-block;
  font-size: 0.6rem; font-weight: 500;
  letter-spacing: 0.08em; text-transform: uppercase;
  padding: 0.2rem 0.55rem; border-radius: 100px;
}
.badge-status.active {
  background: rgba(61,138,94,0.15);
  color: #5db87f;
  border: 1px solid rgba(61,138,94,0.25);
}
.badge-status.used {
  background: rgba(60,60,66,0.4);
  color: var(--col-muted);
  border: 1px solid var(--col-border);
}

/* File action buttons */
.btn-act {
  background: none;
  border: 1px solid var(--col-border);
  color: var(--col-muted); cursor: pointer;
  width: 30px; height: 30px;
  display: flex; align-items: center; justify-content: center;
  border-radius: var(--radius);
  transition: all 0.15s; flex-shrink: 0;
}
.btn-act svg { width: 13px; height: 13px; pointer-events: none; }
.btn-act:hover { border-color: var(--col-accent); color: var(--col-accent); }
.btn-act.danger:hover { border-color: var(--col-danger); color: var(--col-danger); }
.btn-act:active { transform: scale(0.9); }

.file-link-row {
  display: flex; gap: 0.4rem; margin-top: 0.6rem;
}
.file-link-input {
  flex: 1; min-width: 0;
  background: var(--col-bg);
  border: 1px solid var(--col-border);
  color: var(--col-muted);
  font-family: var(--font-mono); font-size: 0.66rem;
  padding: 0.4rem 0.65rem;
  border-radius: var(--radius); outline: none;
  cursor: text;
}
.file-link-input.active-link { color: var(--col-accent); border-color: rgba(201,119,58,0.2); }

/* ── TOAST ───────────────────────────────── */
.xfer-toast {
  position: fixed;
  bottom: 1.5rem; left: 50%; transform: translateX(-50%) translateY(10px);
  background: var(--col-text); color: var(--col-bg);
  font-family: var(--font-mono); font-size: 0.78rem;
  padding: 0.65rem 1.25rem;
  border-radius: var(--radius);
  pointer-events: none;
  opacity: 0; transition: all 0.25s;
  white-space: nowrap; z-index: 9999;
  font-weight: 500;
}
.xfer-toast.show {
  opacity: 1; transform: translateX(-50%) translateY(0);
}

/* ── RESPONSIVE ──────────────────────────── */
@media (max-width: 480px) {
  .drop-inner { padding: 2.5rem 1.25rem; }
  .drop-title { font-size: 0.9rem; }
  .auth-card { padding: 1.5rem; }
  .xfer-main { padding: 1.25rem 1rem 3rem; }
  .file-link-row { flex-direction: column; }
  .file-link-input { font-size: 0.6rem; }
}