/* =============================================
   SlideForge AI — components.css
   Buttons, Inputs, Cards, Modals, Badges, etc.
   ============================================= */

/* ── Buttons ───────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 9px 20px;
  border-radius: var(--radius-md);
  font-size: .9375rem;
  font-weight: 600;
  border: 1.5px solid transparent;
  transition: background var(--transition), color var(--transition),
              border-color var(--transition), box-shadow var(--transition),
              transform 80ms ease;
  white-space: nowrap;
  user-select: none;
}
.btn:active { transform: scale(.97); }
.btn:disabled { opacity: .45; pointer-events: none; }

.btn-primary {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
  box-shadow: var(--shadow-accent);
}
.btn-primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); }

.btn-gradient {
  background: var(--accent-grad);
  color: #fff;
  border: none;
  box-shadow: var(--shadow-accent);
}
.btn-gradient:hover { opacity: .9; }

.btn-secondary {
  background: var(--bg-elevated);
  color: var(--text-primary);
  border-color: var(--border);
}
.btn-secondary:hover { background: var(--bg-card-hover); border-color: var(--accent); }

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border-color: transparent;
}
.btn-ghost:hover { background: var(--bg-elevated); color: var(--text-primary); }

.btn-danger {
  background: var(--error-bg);
  color: var(--error);
  border-color: var(--error);
}
.btn-danger:hover { background: var(--error); color: #fff; }

.btn-sm { padding: 6px 14px; font-size: .8125rem; border-radius: var(--radius-sm); }
.btn-lg { padding: 13px 32px; font-size: 1.0625rem; border-radius: var(--radius-lg); }
.btn-xl { padding: 16px 40px; font-size: 1.125rem; border-radius: var(--radius-xl); }
.btn-icon { padding: 8px; border-radius: var(--radius-sm); }
.btn-icon.btn-sm { padding: 5px; }

/* ── Form elements ─────────────────────────── */
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-label { font-size: .875rem; font-weight: 600; color: var(--text-secondary); }

.form-input,
.form-textarea,
.form-select {
  background: var(--bg-elevated);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  padding: 9px 14px;
  font-size: .9375rem;
  transition: border-color var(--transition), box-shadow var(--transition);
  width: 100%;
}
.form-input::placeholder,
.form-textarea::placeholder { color: var(--text-muted); }
.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(91,143,249,.15);
  outline: none;
}
.form-input.error { border-color: var(--error); }
.form-textarea { resize: vertical; min-height: 100px; line-height: 1.6; }
.form-select { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%237898b8' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 12px center; padding-right: 38px; cursor: pointer; }
.form-select option { background: var(--bg-elevated); color: var(--text-primary); }

.form-hint { font-size: .8125rem; color: var(--text-muted); }
.form-error { font-size: .8125rem; color: var(--error); }

/* Input with icon */
.input-icon-wrap { position: relative; }
.input-icon-wrap .form-input { padding-left: 40px; }
.input-icon-wrap .input-icon { position: absolute; left: 12px; top: 50%; transform: translateY(-50%); color: var(--text-muted); pointer-events: none; }
.input-icon-wrap .input-icon-right { position: absolute; right: 12px; top: 50%; transform: translateY(-50%); color: var(--text-muted); }
.input-icon-wrap .input-btn-right { position: absolute; right: 8px; top: 50%; transform: translateY(-50%); }

/* ── Cards ─────────────────────────────────── */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  transition: border-color var(--transition-md), box-shadow var(--transition-md);
}
.card:hover { border-color: var(--accent); box-shadow: var(--shadow-md); }
.card-sm { padding: 16px; border-radius: var(--radius-md); }
.card-flat { background: var(--bg-elevated); border-radius: var(--radius-md); padding: 16px; }

/* ── Badges ────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .02em;
}
.badge-accent  { background: var(--accent-dim); color: var(--accent); }
.badge-success { background: var(--success-bg); color: var(--success); }
.badge-error   { background: var(--error-bg); color: var(--error); }
.badge-warning { background: var(--warning-bg); color: var(--warning); }
.badge-muted   { background: var(--bg-elevated); color: var(--text-muted); }

/* ── Spinner ───────────────────────────────── */
.spinner {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 2.5px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin .7s linear infinite;
}
.spinner-sm { width: 14px; height: 14px; border-width: 2px; }
.spinner-lg { width: 32px; height: 32px; border-width: 3px; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ── Progress bar ──────────────────────────── */
.progress-bar { height: 4px; background: var(--border); border-radius: 2px; overflow: hidden; }
.progress-bar-fill {
  height: 100%;
  background: var(--accent-grad);
  border-radius: 2px;
  transition: width .4s ease;
}
.progress-label { display: flex; justify-content: space-between; font-size: .8125rem; color: var(--text-secondary); margin-bottom: 6px; }

/* ── Toggle switch ─────────────────────────── */
.toggle-wrap { display: flex; align-items: center; gap: 10px; cursor: pointer; }
.toggle {
  position: relative;
  width: 42px; height: 24px;
}
.toggle input { opacity: 0; width: 0; height: 0; position: absolute; }
.toggle-track {
  position: absolute; inset: 0;
  background: var(--border);
  border-radius: 12px;
  transition: background var(--transition-md);
}
.toggle input:checked ~ .toggle-track { background: var(--accent); }
.toggle-thumb {
  position: absolute;
  top: 3px; left: 3px;
  width: 18px; height: 18px;
  background: #fff;
  border-radius: 50%;
  transition: transform var(--transition-md);
  box-shadow: var(--shadow-sm);
}
.toggle input:checked ~ .toggle-track .toggle-thumb { transform: translateX(18px); }

/* ── Modal ─────────────────────────────────── */
.modal-overlay {
  position: fixed; inset: 0;
  background: rgba(0,0,0,.65);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 20px;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-md);
}
.modal-overlay.open { opacity: 1; pointer-events: all; }
.modal {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 32px;
  width: 100%;
  max-width: 520px;
  box-shadow: var(--shadow-lg);
  transform: translateY(12px);
  transition: transform var(--transition-md);
}
.modal-overlay.open .modal { transform: translateY(0); }
.modal-header { display: flex; align-items: flex-start; justify-content: space-between; margin-bottom: 20px; }
.modal-title { font-size: 1.2rem; font-weight: 700; }
.modal-body { color: var(--text-secondary); line-height: 1.7; }
.modal-footer { display: flex; justify-content: flex-end; gap: 10px; margin-top: 24px; }

/* ── Tabs ──────────────────────────────────── */
.tabs { display: flex; border-bottom: 1px solid var(--border); gap: 0; }
.tab-btn {
  padding: 10px 18px;
  font-size: .875rem;
  font-weight: 600;
  color: var(--text-muted);
  border: none;
  border-bottom: 2px solid transparent;
  background: transparent;
  cursor: pointer;
  transition: color var(--transition), border-color var(--transition);
  margin-bottom: -1px;
}
.tab-btn:hover { color: var(--text-primary); }
.tab-btn.active { color: var(--accent); border-bottom-color: var(--accent); }
.tab-panel { display: none; }
.tab-panel.active { display: block; }

/* ── Toast ─────────────────────────────────── */
#toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 10px;
  pointer-events: none;
}
.toast {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 18px;
  border-radius: var(--radius-md);
  background: var(--bg-card);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-lg);
  font-size: .9rem;
  font-weight: 500;
  pointer-events: all;
  animation: toast-in .25s ease forwards;
  max-width: 360px;
}
.toast.removing { animation: toast-out .2s ease forwards; }
.toast-success { border-left: 3px solid var(--success); }
.toast-error   { border-left: 3px solid var(--error); }
.toast-warning { border-left: 3px solid var(--warning); }
.toast-info    { border-left: 3px solid var(--accent); }
.toast-icon { flex-shrink: 0; width: 18px; height: 18px; }
@keyframes toast-in  { from { opacity: 0; transform: translateX(20px); } to { opacity: 1; transform: translateX(0); } }
@keyframes toast-out { from { opacity: 1; transform: translateX(0); } to { opacity: 0; transform: translateX(20px); } }

/* ── Tooltip ───────────────────────────────── */
[data-tooltip] { position: relative; }
[data-tooltip]::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: calc(100% + 6px);
  left: 50%;
  transform: translateX(-50%);
  background: #1a2540;
  color: var(--text-primary);
  font-size: .75rem;
  font-weight: 500;
  padding: 5px 10px;
  border-radius: var(--radius-sm);
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--transition);
  z-index: 100;
  border: 1px solid var(--border);
}
[data-tooltip]:hover::after { opacity: 1; }

/* ── Empty state ───────────────────────────── */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 60px 24px;
  text-align: center;
  color: var(--text-muted);
}
.empty-state-icon { font-size: 3rem; opacity: .4; margin-bottom: 8px; }
.empty-state h3 { color: var(--text-secondary); font-size: 1.05rem; }
.empty-state p { font-size: .875rem; max-width: 320px; }

/* ── Steps indicator ───────────────────────── */
.steps { display: flex; align-items: center; gap: 0; }
.step { display: flex; align-items: center; gap: 8px; }
.step-num {
  width: 28px; height: 28px;
  border-radius: 50%;
  background: var(--bg-elevated);
  border: 2px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  font-size: .8125rem; font-weight: 700;
  color: var(--text-muted);
  transition: all var(--transition-md);
  flex-shrink: 0;
}
.step.active .step-num  { background: var(--accent); border-color: var(--accent); color: #fff; }
.step.done .step-num    { background: var(--success); border-color: var(--success); color: #fff; }
.step-label { font-size: .8125rem; font-weight: 600; color: var(--text-muted); }
.step.active .step-label { color: var(--text-primary); }
.step-line { width: 40px; height: 2px; background: var(--border); margin: 0 8px; flex-shrink: 0; }
.step.done ~ .step-line { background: var(--success); }

/* ── Range slider ──────────────────────────── */
.range-wrap { display: flex; align-items: center; gap: 12px; }
input[type=range] {
  -webkit-appearance: none;
  flex: 1;
  height: 4px;
  background: var(--border);
  border-radius: 2px;
  outline: none;
}
input[type=range]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 18px; height: 18px;
  background: var(--accent);
  border-radius: 50%;
  cursor: pointer;
  box-shadow: 0 0 0 3px rgba(91,143,249,.2);
}
.range-value { font-size: .875rem; font-weight: 700; color: var(--accent); min-width: 32px; text-align: center; }

/* ── Color swatch ──────────────────────────── */
.color-swatch {
  width: 28px; height: 28px;
  border-radius: var(--radius-sm);
  border: 2px solid var(--border);
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition);
}
.color-swatch:hover { transform: scale(1.1); }
.color-swatch.selected { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(91,143,249,.3); }

/* ── Skeleton loader ───────────────────────── */
.skeleton {
  background: linear-gradient(90deg, var(--bg-elevated) 25%, var(--bg-card-hover) 50%, var(--bg-elevated) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-sm);
}
@keyframes shimmer { from { background-position: 200% 0; } to { background-position: -200% 0; } }

/* ── Theme picker card ─────────────────────── */
.theme-card {
  border: 2px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  cursor: pointer;
  transition: border-color var(--transition-md), box-shadow var(--transition-md);
}
.theme-card:hover { border-color: var(--accent); }
.theme-card.selected { border-color: var(--accent); box-shadow: 0 0 0 2px rgba(91,143,249,.25); }
.theme-card-preview { height: 56px; }
.theme-card-name { padding: 6px 10px; font-size: .75rem; font-weight: 600; color: var(--text-secondary); text-align: center; }