/* ══════════════════════════════════════════════
   COMPONENTS — Buttons, Inputs, Cards, Tabs, Badges, Modals, Progress
   ══════════════════════════════════════════════ */

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.6rem 1.25rem;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.875rem;
  border-radius: var(--radius-sm);
  transition: all var(--transition-base);
  white-space: nowrap;
  line-height: 1.4;
}

.btn:disabled {
  opacity: 0.45;
  pointer-events: none;
}

/* Primary (Purple) */
.btn-primary {
  background: var(--brand-primary);
  color: #fff;
  box-shadow: 0 0 0 0 var(--brand-primary-glow);
}
.btn-primary:hover {
  background: var(--brand-primary-hover);
  box-shadow: var(--glow-primary);
  transform: translateY(-1px);
}
.btn-primary:active {
  transform: translateY(0);
}

/* Fuchsia (Boost) */
.btn-fuchsia {
  background: var(--brand-fuchsia);
  color: #fff;
  box-shadow: 0 0 0 0 var(--brand-fuchsia-glow);
}
.btn-fuchsia:hover {
  background: var(--brand-fuchsia-hover);
  box-shadow: var(--glow-fuchsia);
  transform: translateY(-1px);
}
.btn-fuchsia:active {
  transform: translateY(0);
}

/* Secondary */
.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-strong);
}
.btn-secondary:hover {
  background: var(--surface-mid);
  border-color: var(--brand-primary);
}

/* Ghost */
.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
}
.btn-ghost:hover {
  color: var(--text-primary);
  background: var(--surface-mid);
}

/* Icon-only */
.btn-icon {
  width: 36px;
  height: 36px;
  padding: 0;
  border-radius: var(--radius-sm);
}

/* Sizes */
.btn-sm { padding: 0.4rem 0.75rem; font-size: 0.8rem; }
.btn-lg { padding: 0.75rem 1.75rem; font-size: 1rem; }

/* ── Inputs ── */
.input {
  display: block;
  width: 100%;
  padding: 0.65rem 0.9rem;
  background: var(--surface-deep);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  transition: all var(--transition-fast);
  outline: none;
}
.input::placeholder {
  color: var(--text-muted);
}
.input:focus {
  border-color: var(--brand-primary);
  box-shadow: 0 0 0 3px var(--brand-primary-glow-soft);
}

.input-group {
  position: relative;
}
.input-group .input-icon {
  position: absolute;
  left: 0.85rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  pointer-events: none;
}
.input-group .input {
  padding-left: 2.5rem;
}

/* Textarea */
.textarea {
  resize: vertical;
  min-height: 100px;
}

/* Select */
.select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 16 16' fill='%238a8a9e' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M4 6l4 4 4-4'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.75rem center;
  background-size: 14px;
  padding-right: 2.25rem;
}

/* ── Cards ── */
.card {
  background: var(--surface-mid);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--shadow-card);
  transition: all var(--transition-base);
}
.card:hover {
  border-color: var(--border-default);
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-4);
}

.card-body { }

.card-footer {
  margin-top: var(--space-4);
  padding-top: var(--space-4);
  border-top: 1px solid var(--border-subtle);
}

/* ── Badges ── */
.badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.2rem 0.6rem;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  line-height: 1.4;
  white-space: nowrap;
}

.badge-success { background: var(--semantic-success-bg); color: var(--semantic-success); }
.badge-warning { background: var(--semantic-warning-bg); color: var(--semantic-warning); }
.badge-danger  { background: var(--semantic-danger-bg); color: var(--semantic-danger); }
.badge-info    { background: var(--semantic-info-bg); color: var(--semantic-info); }
.badge-purple  { background: var(--brand-primary-glow-soft); color: var(--brand-primary); }
.badge-fuchsia { background: var(--brand-fuchsia-glow-soft); color: var(--brand-fuchsia); }

/* Notification dot */
.badge-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--brand-primary);
  display: inline-block;
  box-shadow: 0 0 6px var(--brand-primary-glow);
}

.badge-dot-fuchsia {
  background: var(--brand-fuchsia);
  box-shadow: 0 0 6px var(--brand-fuchsia-glow);
}

.badge-dot-info {
  background: var(--semantic-info);
  box-shadow: 0 0 6px rgba(56, 189, 248, 0.35);
}

/* ── Tabs ── */
.tabs {
  display: flex;
  gap: var(--space-1);
  padding: var(--space-1);
  background: var(--surface-deep);
  border-radius: var(--radius-md);
  overflow-x: auto;
}

.tab {
  padding: 0.45rem 1rem;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  white-space: nowrap;
}
.tab:hover {
  color: var(--text-primary);
  background: var(--surface-mid);
}
.tab.active {
  color: var(--text-primary);
  background: var(--surface-elevated);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}

/* ── Progress Bar ── */
.progress-bar {
  width: 100%;
  height: 6px;
  background: var(--surface-deep);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress-bar .fill {
  height: 100%;
  border-radius: var(--radius-full);
  transition: width var(--transition-slow);
}

.progress-bar .fill.purple  { background: var(--brand-primary); box-shadow: 0 0 8px var(--brand-primary-glow); }
.progress-bar .fill.fuchsia { background: var(--brand-fuchsia); box-shadow: 0 0 8px var(--brand-fuchsia-glow); }
.progress-bar .fill.success { background: var(--semantic-success); }
.progress-bar .fill.warning { background: var(--semantic-warning); }
.progress-bar .fill.info    { background: var(--semantic-info); }
.progress-bar .fill.danger  { background: var(--semantic-danger); }

/* ── Modal ── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.65);
  backdrop-filter: blur(6px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: var(--space-4);
  animation: fadeIn var(--transition-base);
}

.modal {
  background: var(--surface-elevated);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-elevated);
  width: 100%;
  max-width: 560px;
  max-height: 85vh;
  overflow-y: auto;
  padding: var(--space-8);
  animation: slideUp var(--transition-base);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-6);
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: var(--space-3);
  margin-top: var(--space-6);
  padding-top: var(--space-6);
  border-top: 1px solid var(--border-subtle);
}

.modal-wide {
  max-width: 720px;
}

/* ── Animations ── */
@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50%      { opacity: 0.5; }
}

/* ── Skeleton Loader ── */
.skeleton {
  background: var(--surface-elevated);
  border-radius: var(--radius-sm);
  animation: pulse 1.6s ease-in-out infinite;
}

/* ── Empty State ── */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-16) var(--space-4);
  text-align: center;
  color: var(--text-muted);
}
.empty-state svg {
  margin-bottom: var(--space-4);
  opacity: 0.3;
}
.empty-state h3 {
  color: var(--text-secondary);
  margin-bottom: var(--space-2);
}

/* ── Avatars ── */
.avatar {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: var(--surface-elevated);
  border: 2px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.85rem;
  color: var(--brand-primary);
  flex-shrink: 0;
}

.avatar-sm { width: 28px; height: 28px; font-size: 0.7rem; }
.avatar-lg { width: 52px; height: 52px; font-size: 1.1rem; }

.avatar-stack {
  display: flex;
}
.avatar-stack .avatar {
  margin-left: -10px;
  border: 2px solid var(--surface-deep);
}
.avatar-stack .avatar:first-child {
  margin-left: 0;
}

/* ── Tooltip ── */
[data-tooltip] {
  position: relative;
}
[data-tooltip]::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: calc(100% + 6px);
  left: 50%;
  transform: translateX(-50%);
  background: var(--surface-overlay);
  color: var(--text-primary);
  font-size: 0.75rem;
  padding: 0.3rem 0.6rem;
  border-radius: var(--radius-sm);
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--transition-fast);
  z-index: 100;
}
[data-tooltip]:hover::after {
  opacity: 1;
}

/* ── File Icon Colors ── */
.file-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: var(--radius-sm);
  font-size: 0.7rem;
  font-weight: 700;
  flex-shrink: 0;
}
.file-icon-pdf  { background: rgba(239, 68, 68, 0.15); color: #ef4444; }
.file-icon-xlsx { background: rgba(16, 185, 129, 0.15); color: #10b981; }
.file-icon-docx { background: rgba(56, 189, 248, 0.15); color: #38bdf8; }

/* ── Divider ── */
.divider {
  height: 1px;
  background: var(--border-subtle);
  margin: var(--space-4) 0;
}