/* ═══════════════════════════════════════════════════════════════
   MailSender — Premium Dark UI
   Accent: #fe7000 (Basic-Fit orange)
═══════════════════════════════════════════════════════════════ */

/* ── Variables ───────────────────────────────────────────────── */
:root {
  --bg-dark:    #0d0d12;
  --bg-card:    #15151e;
  --bg-card2:   #1c1c28;
  --bg-input:   #20202e;
  --bg-input-h: #252535;
  --border:     #2a2a3e;
  --border-h:   #3a3a58;

  --accent:       #fe7000;
  --accent-dim:   rgba(254, 112, 0, 0.12);
  --accent-glow:  rgba(254, 112, 0, 0.25);
  --accent-hover: #e56200;

  --purple: #592bb2;

  --text-1: #f2f2f8;
  --text-2: #9090b8;
  --text-3: #55556a;

  --success:    #22c55e;
  --success-bg: rgba(34, 197, 94, 0.1);
  --error:      #ef4444;
  --error-bg:   rgba(239, 68, 68, 0.1);

  --radius-sm: 8px;
  --radius:    12px;
  --radius-lg: 16px;

  --font: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;

  --transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ── Reset & Base ─────────────────────────────────────────────── */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

html { height: 100%; }

body {
  font-family: var(--font);
  background: var(--bg-dark);
  color: var(--text-1);
  height: 100vh;
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ── Layout principal ─────────────────────────────────────────── */
.app {
  display: flex;
  height: 100vh;
  overflow: hidden;
}

/* ══════════════════════════════════════════════════════════════
   SIDEBAR COMPOSER
══════════════════════════════════════════════════════════════ */
.composer {
  width: 430px;
  min-width: 430px;
  background: var(--bg-card);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

/* Header */
.composer__header {
  padding: 18px 24px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: linear-gradient(135deg, var(--bg-card) 0%, var(--bg-card2) 100%);
  flex-shrink: 0;
}

.header-brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.header-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--accent) 0%, #ff9a36 100%);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  box-shadow: 0 4px 12px var(--accent-glow);
  flex-shrink: 0;
}

.header-title {
  font-size: 17px;
  font-weight: 700;
  color: var(--text-1);
  letter-spacing: -0.3px;
}

.badge {
  font-size: 10px;
  font-weight: 700;
  padding: 4px 10px;
  background: var(--accent-dim);
  color: var(--accent);
  border: 1px solid rgba(254, 112, 0, 0.25);
  border-radius: 20px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  white-space: nowrap;
}

/* Formulaire scrollable */
.composer__form {
  flex: 1;
  overflow-y: auto;
  padding: 20px 24px 24px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
}

.composer__form::-webkit-scrollbar { width: 5px; }
.composer__form::-webkit-scrollbar-track { background: transparent; }
.composer__form::-webkit-scrollbar-thumb { background: var(--border); border-radius: 10px; }
.composer__form::-webkit-scrollbar-thumb:hover { background: var(--border-h); }

/* ── Champs ───────────────────────────────────────────────────── */
.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.field label {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 11px;
  font-weight: 600;
  color: var(--text-2);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.field-icon { font-size: 13px; }

.field-hint {
  font-size: 11px;
  color: var(--text-3);
  line-height: 1.4;
}

.field input {
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 13px;
  color: var(--text-1);
  font-size: 13.5px;
  font-family: var(--font);
  transition: border-color var(--transition), background var(--transition), box-shadow var(--transition);
  outline: none;
  width: 100%;
}

.field input:hover {
  background: var(--bg-input-h);
  border-color: var(--border-h);
}

.field input:focus {
  background: var(--bg-input-h);
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-dim);
}

.field input::placeholder { color: var(--text-3); }

/* 2 colonnes côte à côte */
.field-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

/* Séparateur de section */
.separator {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 4px 0 2px;
}

.separator::before,
.separator::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}

.separator span {
  font-size: 10px;
  font-weight: 700;
  color: var(--text-3);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  white-space: nowrap;
}

/* ── Template options (collapsible) ───────────────────────────── */
.template-options {
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  transition: border-color var(--transition);
}

.template-options:hover {
  border-color: var(--border-h);
}

.template-options summary {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 14px;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-2);
  cursor: pointer;
  user-select: none;
  list-style: none;
  transition: color var(--transition);
}

.template-options summary::-webkit-details-marker { display: none; }

.template-options summary:hover { color: var(--text-1); }

.template-options summary svg { flex-shrink: 0; }

.template-options summary .chevron {
  margin-left: auto;
  transition: transform var(--transition);
}

.template-options[open] summary .chevron {
  transform: rotate(180deg);
}

.template-options[open] summary {
  color: var(--accent);
  border-bottom: 1px solid var(--border);
}

.template-fields {
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  background: rgba(0,0,0,0.15);
}

.template-fields .field input {
  font-size: 12px;
  background: var(--bg-dark);
  border-color: var(--border);
  padding: 8px 12px;
}

/* ── Upload zone bannière ─────────────────────────────────────── */
.field--upload { gap: 6px; }

.upload-zone {
  position: relative;
  border: 2px dashed var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-dark);
  transition: border-color var(--transition), background var(--transition);
  cursor: pointer;
  overflow: hidden;
}

.upload-zone:hover {
  border-color: var(--accent);
  background: var(--accent-dim);
}

.upload-zone.dragover {
  border-color: var(--accent);
  background: rgba(254, 112, 0, 0.08);
  box-shadow: 0 0 0 3px var(--accent-dim);
}

/* Input file invisible par-dessus tout */
.upload-input {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
  width: 100% !important;
  height: 100% !important;
  z-index: 2;
  border: none !important;
  background: transparent !important;
  box-shadow: none !important;
  padding: 0 !important;
}

/* Placeholder (état vide) */
.upload-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 22px 16px;
  pointer-events: none;
  color: var(--text-3);
}

.upload-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-2);
}

.upload-sublabel {
  font-size: 11px;
  color: var(--text-3);
}

.upload-sublabel u { color: var(--accent); }

/* Preview (état avec image) */
.upload-preview {
  position: relative;
  padding: 0;
  pointer-events: none;
}

.upload-preview img {
  display: block;
  width: 100%;
  height: 100px;
  object-fit: cover;
  border-radius: calc(var(--radius-sm) - 2px);
}

.upload-filename {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: rgba(0,0,0,0.65);
  color: white;
  font-size: 11px;
  padding: 4px 8px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.upload-clear {
  position: absolute;
  top: 6px;
  right: 6px;
  z-index: 3;
  pointer-events: all;
  background: rgba(0,0,0,0.65);
  border: none;
  border-radius: 50%;
  width: 26px;
  height: 26px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  cursor: pointer;
  transition: background var(--transition), transform var(--transition);
}

.upload-clear:hover {
  background: var(--error);
  transform: scale(1.1);
}

/* Séparateur "ou" */
.upload-or {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 2px 0;
}

.upload-or::before,
.upload-or::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}

.upload-or span {
  font-size: 10px;
  color: var(--text-3);
  font-weight: 500;
  white-space: nowrap;
}

/* ── Éditeur Quill ───────────────────────────────────────────── */
.field--editor {
  flex: 1;
  gap: 0;
}

/* Toolbar */
.ql-toolbar.ql-snow {
  background: var(--bg-input) !important;
  border: 1px solid var(--border) !important;
  border-bottom: 1px solid var(--border) !important;
  border-radius: var(--radius-sm) var(--radius-sm) 0 0 !important;
  padding: 8px 10px !important;
}

.ql-toolbar.ql-snow .ql-formats {
  margin-right: 8px;
}

/* Container */
.ql-container.ql-snow {
  background: var(--bg-input) !important;
  border: 1px solid var(--border) !important;
  border-top: none !important;
  border-radius: 0 0 var(--radius-sm) var(--radius-sm) !important;
  font-family: var(--font) !important;
  font-size: 14px !important;
}

.ql-editor {
  color: var(--text-1) !important;
  min-height: 150px !important;
  max-height: 260px;
  overflow-y: auto !important;
  line-height: 1.6 !important;
  padding: 12px 14px !important;
}

.ql-editor.ql-blank::before {
  color: var(--text-3) !important;
  font-style: normal !important;
  font-size: 13.5px;
}

/* Icônes toolbar */
.ql-toolbar .ql-stroke { stroke: var(--text-2) !important; }
.ql-toolbar .ql-fill   { fill:   var(--text-2) !important; }
.ql-toolbar .ql-color-label.ql-stroke.ql-transparent { opacity: 0.4; }

.ql-toolbar button:hover .ql-stroke,
.ql-toolbar button.ql-active .ql-stroke,
.ql-toolbar .ql-picker-label:hover .ql-stroke { stroke: var(--accent) !important; }

.ql-toolbar button:hover .ql-fill,
.ql-toolbar button.ql-active .ql-fill { fill: var(--accent) !important; }

.ql-toolbar button:hover,
.ql-toolbar button.ql-active,
.ql-toolbar .ql-picker-label:hover {
  color: var(--accent) !important;
}

.ql-toolbar .ql-picker-label {
  color: var(--text-2) !important;
  border-color: transparent !important;
}

.ql-toolbar .ql-picker-options {
  background: var(--bg-card2) !important;
  border-color: var(--border) !important;
  border-radius: var(--radius-sm) !important;
}

.ql-toolbar .ql-picker-item:hover,
.ql-toolbar .ql-picker-item.ql-selected {
  color: var(--accent) !important;
}

/* ── Boutons ──────────────────────────────────────────────────── */
.actions {
  display: flex;
  gap: 10px;
  flex-shrink: 0;
}

.btn {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  padding: 11px 18px;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 13.5px;
  font-weight: 600;
  font-family: var(--font);
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
}

.btn--primary {
  background: linear-gradient(135deg, var(--accent) 0%, #ff9a36 100%);
  color: white;
  box-shadow: 0 4px 16px var(--accent-glow);
}

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px var(--accent-glow);
  filter: brightness(1.05);
}

.btn--primary:active { transform: translateY(0); box-shadow: 0 2px 8px var(--accent-glow); }

.btn--secondary {
  background: var(--bg-input);
  color: var(--text-2);
  border: 1px solid var(--border);
}

.btn--secondary:hover {
  background: var(--bg-input-h);
  border-color: var(--accent);
  color: var(--accent);
}

.btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  transform: none !important;
  filter: none !important;
}

/* ── Notifications ───────────────────────────────────────────── */
.notification {
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  font-size: 13.5px;
  font-weight: 500;
  line-height: 1.4;
  animation: notifIn 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.notification.success {
  background: var(--success-bg);
  border: 1px solid rgba(34, 197, 94, 0.25);
  color: var(--success);
}

.notification.error {
  background: var(--error-bg);
  border: 1px solid rgba(239, 68, 68, 0.25);
  color: var(--error);
}

.notification.hidden { display: none; }

@keyframes notifIn {
  from { opacity: 0; transform: translateY(-6px) scale(0.98); }
  to   { opacity: 1; transform: translateY(0)    scale(1); }
}

/* ══════════════════════════════════════════════════════════════
   PANNEAU APERÇU
══════════════════════════════════════════════════════════════ */
.preview-panel {
  flex: 1;
  display: flex;
  flex-direction: column;
  background: var(--bg-dark);
  overflow: hidden;
  min-width: 0;
}

.preview-panel__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-card);
  flex-shrink: 0;
  gap: 12px;
}

.preview-title {
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: 11px;
  font-weight: 700;
  color: var(--text-2);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  white-space: nowrap;
}

.preview-meta {
  font-size: 12px;
  color: var(--text-3);
  font-weight: 400;
  text-align: right;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.preview-wrapper {
  flex: 1;
  overflow: hidden;
  padding: 16px;
  background: #e8e8ee;
}

.preview-frame {
  width: 100%;
  height: 100%;
  border: none;
  border-radius: var(--radius);
  background: white;
  box-shadow: 0 8px 40px rgba(0,0,0,0.3);
  display: block;
}

/* ══════════════════════════════════════════════════════════════
   RESPONSIVE
══════════════════════════════════════════════════════════════ */
@media (max-width: 900px) {
  body { overflow: auto; }

  .app {
    flex-direction: column;
    height: auto;
    min-height: 100vh;
  }

  .composer {
    width: 100%;
    min-width: unset;
    height: auto;
    max-height: none;
  }

  .composer__form { overflow-y: visible; }

  .preview-panel { height: 60vh; }
  .preview-wrapper { padding: 10px; }
}

/* ── Scrollbars globales ─────────────────────────────────────── */
::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 10px; }
::-webkit-scrollbar-thumb:hover { background: var(--border-h); }