/* ===========================================================================
   MyFyt Design — UI
   Design system léger, sans dépendance externe.
   =========================================================================== */

:root {
  --bg: #0f1220;
  --bg-2: #171a2b;
  --card: #1e2236;
  --card-2: #262b45;
  --border: #313860;
  --text: #eef0fb;
  --muted: #a2a8c9;
  --primary: #6c5ce7;
  --primary-2: #8b7bf0;
  --accent: #00d1b2;
  --danger: #ff5c7a;
  --success: #29d980;
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
  --radius: 16px;
  --radius-sm: 10px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: 'Segoe UI', system-ui, -apple-system, Roboto, Helvetica, Arial, sans-serif;
  background: radial-gradient(1200px 600px at 80% -10%, #23284a 0%, var(--bg) 55%) fixed;
  color: var(--text);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

/* ---------- Header ---------- */
.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 28px;
  border-bottom: 1px solid var(--border);
  background: rgba(15, 18, 32, 0.7);
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
  z-index: 20;
}
.brand { display: flex; align-items: center; gap: 14px; }
.brand-mark {
  font-size: 26px;
  width: 46px; height: 46px;
  display: grid; place-items: center;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: 12px;
  box-shadow: var(--shadow);
}
.app-header h1 { font-size: 20px; margin: 0; letter-spacing: 0.3px; }
.tagline { margin: 2px 0 0; font-size: 12.5px; color: var(--muted); }
.myfyt-link {
  color: var(--muted); text-decoration: none; font-size: 13px;
  border: 1px solid var(--border); padding: 8px 14px; border-radius: 999px;
  transition: 0.2s;
}
.myfyt-link:hover { color: var(--text); border-color: var(--primary); }

/* ---------- Stepper ---------- */
.stepper {
  display: flex; gap: 6px; flex-wrap: wrap;
  justify-content: center;
  padding: 20px 16px 4px;
  max-width: 900px; margin: 0 auto;
}
.step {
  display: flex; align-items: center; gap: 8px;
  background: transparent; border: none; cursor: pointer;
  color: var(--muted); font-size: 13.5px; font-weight: 600;
  padding: 8px 14px; border-radius: 999px; transition: 0.2s;
}
.step .dot {
  width: 24px; height: 24px; border-radius: 50%;
  display: grid; place-items: center; font-size: 12px;
  background: var(--card-2); color: var(--muted);
  border: 1px solid var(--border);
}
.step.is-active { color: var(--text); }
.step.is-active .dot { background: var(--primary); color: #fff; border-color: var(--primary); }
.step.is-done .dot { background: var(--success); color: #06251a; border-color: var(--success); }
.step:disabled { opacity: 0.5; cursor: not-allowed; }

/* ---------- Layout ---------- */
.container { max-width: 900px; margin: 0 auto; padding: 18px 20px 60px; }
.panel {
  display: none;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px;
  box-shadow: var(--shadow);
  animation: rise 0.35s ease;
}
.panel.is-active { display: block; }
@keyframes rise { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: none; } }

h2 { margin: 0 0 6px; font-size: 20px; }
.help { margin: 0 0 20px; color: var(--muted); font-size: 14px; }
.hint { color: var(--muted); font-size: 12.5px; margin-top: 12px; }

/* ---------- Form ---------- */
.field { display: block; margin-bottom: 18px; }
.field > span { display: block; font-size: 13px; font-weight: 600; margin-bottom: 7px; color: #cdd2ee; }
.field > span em { color: var(--accent); font-style: normal; }
textarea, select, input[type="email"], input[type="number"] {
  width: 100%; padding: 12px 14px;
  background: var(--bg-2); color: var(--text);
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  font-size: 14.5px; font-family: inherit; resize: vertical;
  transition: border-color 0.2s, box-shadow 0.2s;
}
textarea:focus, select:focus, input:focus {
  outline: none; border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(108, 92, 231, 0.25);
}
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

.segmented { display: inline-flex; gap: 6px; }
.segmented button {
  min-width: 52px; padding: 10px 0; cursor: pointer;
  background: var(--bg-2); color: var(--muted);
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  font-size: 15px; font-weight: 700; transition: 0.15s;
}
.segmented button.is-selected {
  background: var(--primary); color: #fff; border-color: var(--primary);
}

input[type="range"] { width: 100%; accent-color: var(--primary); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  border: 1px solid transparent; border-radius: var(--radius-sm);
  padding: 12px 20px; font-size: 14.5px; font-weight: 700;
  cursor: pointer; transition: transform 0.08s, filter 0.2s, background 0.2s;
  font-family: inherit;
}
.btn:active { transform: translateY(1px); }
.btn:disabled { opacity: 0.55; cursor: not-allowed; }
.btn-lg { padding: 15px 26px; font-size: 15.5px; width: 100%; margin-top: 6px; }
.btn-primary { background: linear-gradient(135deg, var(--primary), var(--primary-2)); color: #fff; }
.btn-primary:hover:not(:disabled) { filter: brightness(1.08); }
.btn-secondary { background: var(--card-2); color: var(--text); border-color: var(--border); }
.btn-secondary:hover:not(:disabled) { border-color: var(--primary); }
.btn-ghost { background: transparent; color: var(--muted); }
.btn-ghost:hover { color: var(--text); }

.actions { display: flex; justify-content: space-between; gap: 12px; margin-top: 22px; flex-wrap: wrap; }

/* ---------- Proposals grid ---------- */
.proposals {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 16px; margin-bottom: 8px;
}
.proposal {
  position: relative; border: 2px solid var(--border);
  border-radius: var(--radius-sm); overflow: hidden; cursor: pointer;
  background: var(--bg-2); aspect-ratio: 1; transition: 0.18s;
}
.proposal img { width: 100%; height: 100%; object-fit: cover; display: block; }
.proposal:hover { border-color: var(--primary-2); transform: translateY(-3px); }
.proposal.is-selected { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(0, 209, 178, 0.3); }
.proposal .pick { position: absolute; inset: auto 8px 8px auto; background: var(--accent); color: #04231d;
  font-size: 12px; font-weight: 800; padding: 4px 9px; border-radius: 999px; opacity: 0; transition: 0.18s; }
.proposal.is-selected .pick { opacity: 1; }

/* ---------- Edit ---------- */
.edit-layout, .preview-layout, .finalize-layout {
  display: grid; grid-template-columns: 1fr 1fr; gap: 22px; align-items: start;
}
.edit-preview, .finalize-preview {
  background: var(--bg-2); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 12px; display: grid; place-items: center;
}
.edit-preview img, .finalize-preview img { max-width: 100%; border-radius: 8px; }
.edit-variants { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin-top: 12px; }
.edit-variants img { width: 100%; border-radius: 8px; cursor: pointer; border: 2px solid transparent; }
.edit-variants img:hover { border-color: var(--primary); }

/* ---------- Preview stage ---------- */
.preview-stage {
  position: relative; background: var(--bg-2);
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  padding: 12px; display: grid; place-items: center; min-height: 320px;
}
.preview-stage img { max-width: 100%; max-height: 460px; border-radius: 8px; }
.stage-loader { position: absolute; inset: 0; display: grid; place-items: center; background: rgba(15,18,32,0.6); border-radius: var(--radius-sm); }

/* ---------- Success ---------- */
.success-box {
  display: flex; gap: 14px; align-items: flex-start; margin-top: 18px;
  background: rgba(41, 217, 128, 0.1); border: 1px solid var(--success);
  border-radius: var(--radius-sm); padding: 16px;
}
.success-box .check {
  width: 34px; height: 34px; flex: none; border-radius: 50%;
  background: var(--success); color: #06251a; display: grid; place-items: center; font-weight: 900;
}
.success-box p { margin: 4px 0 10px; color: var(--muted); font-size: 13.5px; }

/* ---------- Spinner / overlay ---------- */
.spinner {
  width: 18px; height: 18px; border-radius: 50%;
  border: 3px solid rgba(255,255,255,0.25); border-top-color: #fff;
  display: inline-block; animation: spin 0.8s linear infinite;
}
.spinner-lg { width: 42px; height: 42px; border-width: 4px; }
@keyframes spin { to { transform: rotate(360deg); } }

.overlay {
  position: fixed; inset: 0; z-index: 50;
  background: rgba(9, 11, 20, 0.72); backdrop-filter: blur(4px);
  display: grid; place-items: center;
}
.overlay-card {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 32px 40px; text-align: center;
  box-shadow: var(--shadow); display: grid; gap: 10px; justify-items: center;
}
.overlay-card p { margin: 6px 0 0; font-weight: 700; }
.overlay-card small { color: var(--muted); }

/* ---------- Toast ---------- */
.toast {
  position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%);
  background: var(--card-2); color: var(--text);
  border: 1px solid var(--border); border-left: 4px solid var(--primary);
  padding: 14px 20px; border-radius: 10px; z-index: 60;
  box-shadow: var(--shadow); max-width: 90vw; font-size: 14px;
  animation: rise 0.25s ease;
}
.toast.is-error { border-left-color: var(--danger); }
.toast.is-success { border-left-color: var(--success); }

/* ---------- Footer ---------- */
.app-footer { text-align: center; color: var(--muted); font-size: 12.5px; padding: 24px; }

.hidden { display: none !important; }

/* ---------- Responsive ---------- */
@media (max-width: 720px) {
  .grid-2, .edit-layout, .preview-layout, .finalize-layout { grid-template-columns: 1fr; }
  .stepper .step { padding: 6px 8px; font-size: 12px; }
  .step span:not(.dot) { display: none; }
  .app-header { padding: 14px 16px; }
}