/* ============================================================
   SAMAAN – UI Components (Minimalist Light Theme)
   ============================================================ */

/* ── Buttons ─────────────────────────────────────────────── */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    font-size: 0.9rem;
    font-weight: 500;
    border-radius: var(--radius-sm);
    border: none;
    cursor: pointer;
    transition: var(--transition);
    user-select: none;
    letter-spacing: 0.01em;
}
.btn:active { transform: scale(0.97); }

.btn-primary {
    background: linear-gradient(90deg, #2dd4bf 0%, #06b6d4 35%, #8b5cf6 100%);
    color: #fff;
    border: none;
    box-shadow: 0 4px 14px rgba(6, 182, 212, 0.28);
}
.btn-primary:hover {
    background: linear-gradient(90deg, #14b8a6 0%, #0284c7 35%, #7c3aed 100%);
    box-shadow: 0 6px 18px rgba(139, 92, 246, 0.38);
}

.btn-secondary {
    background: linear-gradient(135deg, var(--secondary), var(--secondary-light));
    color: #fff;
    box-shadow: 0 2px 8px rgba(139, 92, 246, 0.25);
}
.btn-secondary:hover { box-shadow: 0 4px 12px rgba(139, 92, 246, 0.35); }

.btn-success { background-color: var(--success); color: #fff; }
.btn-success:hover { filter: brightness(1.05); }

.btn-danger { background-color: var(--danger); color: #fff; }
.btn-danger:hover { filter: brightness(1.08); }

.btn-warning { background-color: var(--warning); color: #fff; }
.btn-warning:hover { filter: brightness(1.08); }

.btn-outline {
    background-color: transparent;
    border: 1px solid var(--border);
    color: var(--text-secondary);
}
.btn-outline:hover {
    background-color: var(--bg-hover);
    color: var(--primary);
    border-color: var(--primary);
}

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

.btn-sm { padding: 6px 12px; font-size: 0.82rem; border-radius: 6px; }
.btn-lg { padding: 12px 28px; font-size: 1rem; border-radius: var(--radius-md); }
.btn-icon { padding: 0; width: 36px; height: 36px; border-radius: var(--radius-sm); flex-shrink: 0; }

/* ── Cards ───────────────────────────────────────────────── */
.card {
    background-color: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow);
    transition: box-shadow var(--transition), border-color var(--transition);
    overflow: hidden;
}
.card:hover { border-color: #cbd5e1; box-shadow: 0 4px 16px rgba(0,0,0,0.07); }

.card-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: #fafbff;
}
.card-body { padding: 20px; }
.card-footer { padding: 14px 20px; border-top: 1px solid var(--border); background-color: #fafbff; }

/* ── Stat Cards ──────────────────────────────────────────── */
.stat-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 22px;
    display: flex;
    align-items: center;
    gap: 18px;
    position: relative;
    overflow: hidden;
    transition: box-shadow var(--transition);
}
.stat-card:hover { box-shadow: 0 6px 20px rgba(0,0,0,0.06); }
.stat-card::after {
    content: '';
    position: absolute;
    width: 90px; height: 90px;
    background: radial-gradient(circle, rgba(21,94,117,0.04) 0%, transparent 70%);
    top: -40px; right: -30px;
    border-radius: 50%;
}

.stat-card-icon {
    width: 52px; height: 52px;
    border-radius: var(--radius-md);
    display: flex; align-items: center; justify-content: center;
    font-size: 1.4rem; flex-shrink: 0;
}
.stat-card-icon.teal   { background-color: rgba(21, 94, 117, 0.1);  color: var(--primary); }
.stat-card-icon.cyan   { background-color: rgba(6, 182, 212, 0.12); color: var(--primary-light); }
.stat-card-icon.indigo { background-color: rgba(139, 92, 246, 0.1); color: var(--secondary); }
.stat-card-icon.amber  { background-color: rgba(245, 158, 11, 0.1); color: var(--warning); }
.stat-card-icon.green  { background-color: rgba(16, 185, 129, 0.1); color: var(--success); }
.stat-card-icon.red    { background-color: rgba(239, 68, 68, 0.1);  color: var(--danger); }

.stat-card-info h3 { font-size: 1.75rem; margin-bottom: 2px; color: var(--text-primary); font-weight: 700; }
.stat-card-info p { color: var(--text-muted); font-size: 0.82rem; text-transform: uppercase; letter-spacing: 0.6px; font-weight: 500; }

/* ── Forms ───────────────────────────────────────────────── */
.form-group { margin-bottom: 20px; }
.form-label { display: block; font-weight: 500; color: var(--text-secondary); margin-bottom: 6px; font-size: 0.88rem; }

.form-control {
    width: 100%;
    background-color: #f8fafc;
    border: 1px solid var(--border);
    color: var(--text-primary);
    padding: 10px 14px;
    border-radius: var(--radius-sm);
    font-family: var(--font-sans);
    font-size: 0.93rem;
    transition: var(--transition);
    box-sizing: border-box;
}
.form-control::placeholder { color: var(--text-muted); }
.form-control:focus {
    outline: none;
    border-color: var(--primary-light);
    background-color: #fff;
    box-shadow: 0 0 0 3px rgba(6, 182, 212, 0.12);
}

.form-select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%2394a3b8'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    background-size: 16px;
    padding-right: 40px;
}
.form-textarea { min-height: 100px; resize: vertical; }
.form-check { display: flex; align-items: center; gap: 8px; cursor: pointer; user-select: none; }
.form-check input { width: 16px; height: 16px; accent-color: var(--primary); }
.form-error { color: var(--danger); font-size: 0.8rem; margin-top: 4px; animation: slideUp 0.2s ease-out; }
.form-hint { color: var(--text-muted); font-size: 0.8rem; margin-top: 4px; }

/* ── Badges ──────────────────────────────────────────────── */
.badge {
    display: inline-flex; align-items: center;
    padding: 3px 10px; font-size: 0.73rem; font-weight: 600;
    border-radius: var(--radius-full); letter-spacing: 0.02em;
}
.badge-primary   { background-color: rgba(21, 94, 117, 0.1);  color: var(--primary); }
.badge-secondary { background-color: rgba(139, 92, 246, 0.1); color: var(--secondary); }
.badge-success   { background-color: rgba(16, 185, 129, 0.1); color: #059669; }
.badge-warning   { background-color: rgba(245, 158, 11, 0.1); color: #b45309; }
.badge-danger    { background-color: rgba(239, 68, 68, 0.1);  color: #dc2626; }
.badge-info      { background-color: rgba(59, 130, 246, 0.1); color: #2563eb; }
.badge-muted     { background-color: var(--bg-hover);         color: var(--text-muted); }

/* ── Tables ──────────────────────────────────────────────── */
.table-container { overflow-x: auto; border-radius: var(--radius-md); border: 1px solid var(--border); background-color: var(--surface); }
.table { width: 100%; border-collapse: collapse; text-align: left; }
.table th {
    background-color: #f8fafc;
    padding: 13px 18px;
    font-weight: 600; color: var(--text-muted);
    font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.6px;
    border-bottom: 1px solid var(--border); white-space: nowrap;
}
.table td { padding: 13px 18px; border-bottom: 1px solid #f1f5f9; color: var(--text-primary); font-size: 0.92rem; }
.table tr:last-child td { border-bottom: none; }
.table tr:hover td { background-color: #fafcff; }
.table-actions { display: flex; gap: 6px; }

/* ── Modals ──────────────────────────────────────────────── */
.modal-overlay {
    position: fixed; top: 0; left: 0; right: 0; bottom: 0;
    background-color: rgba(15, 23, 42, 0.35);
    display: none; align-items: center; justify-content: center;
    z-index: 1000; opacity: 0; pointer-events: none;
    transition: opacity 0.25s ease;
}
.modal-overlay.show {
    display: flex;
    opacity: 1;
    backdrop-filter: blur(6px);
    pointer-events: all;
}

.modal {
    background-color: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    width: 90%; max-width: 600px; max-height: 90vh;
    display: flex; flex-direction: column; overflow: hidden;
    transform: scale(0.92) translateY(20px);
    transition: transform 0.25s ease;
    box-shadow: 0 20px 60px rgba(0,0,0,0.12);
}
.modal-overlay.show .modal { transform: scale(1) translateY(0); }

.modal-header { padding: 18px 24px; border-bottom: 1px solid var(--border); display: flex; justify-content: space-between; align-items: center; background-color: #fafbff; }
.modal-body { padding: 24px; overflow-y: auto; }
.modal-footer { padding: 14px 24px; border-top: 1px solid var(--border); display: flex; justify-content: flex-end; gap: 10px; background-color: #fafbff; }

/* ── Alerts ──────────────────────────────────────────────── */
.alert {
    padding: 13px 18px; border-radius: var(--radius-sm); margin-bottom: 16px;
    border-left: 3px solid transparent;
    display: flex; align-items: flex-start; justify-content: space-between; gap: 10px; font-size: 0.9rem;
}
.alert-success { background-color: #f0fdf4; border-left-color: var(--success); color: #15803d; }
.alert-danger  { background-color: #fff1f2; border-left-color: var(--danger);  color: #b91c1c; }
.alert-warning { background-color: #fffbeb; border-left-color: var(--warning); color: #92400e; }
.alert-info    { background-color: #eff6ff; border-left-color: var(--info);    color: #1d4ed8; }

/* ── Avatars ─────────────────────────────────────────────── */
.avatar { border-radius: var(--radius-full); object-fit: cover; border: 2px solid var(--border); background-color: var(--bg-hover); }
.avatar-sm { width: 32px; height: 32px; }
.avatar-md { width: 40px; height: 40px; }
.avatar-lg { width: 56px; height: 56px; }
.avatar-xl { width: 80px; height: 80px; }

/* ── Search Box ──────────────────────────────────────────── */
.search-box { position: relative; width: 280px; }
.search-box i { position: absolute; left: 12px; top: 50%; transform: translateY(-50%); color: var(--text-muted); font-size: 0.88rem; }
.search-box input { padding-left: 36px; }

/* ── Toast ───────────────────────────────────────────────── */
#toast-container { position: fixed; bottom: 24px; right: 24px; z-index: 2000; display: flex; flex-direction: column; gap: 10px; max-width: 340px; width: 100%; }
.toast {
    background-color: var(--surface); border: 1px solid var(--border);
    border-left: 4px solid var(--primary); padding: 14px 18px;
    border-radius: var(--radius-sm); color: var(--text-primary);
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
    display: flex; align-items: center; justify-content: space-between; gap: 12px;
    animation: slideInRight 0.3s ease-out; font-size: 0.9rem;
}
.toast-success { border-left-color: var(--success); }
.toast-error   { border-left-color: var(--danger); }
.toast-warning { border-left-color: var(--warning); }
.toast-info    { border-left-color: var(--info); }

/* ── Loading Spinner ─────────────────────────────────────── */
.loading-spinner { width: 24px; height: 24px; border: 3px solid var(--border); border-radius: 50%; border-top-color: var(--primary); animation: spin 0.8s linear infinite; }
.spinner-wrapper { display: flex; justify-content: center; align-items: center; padding: 40px; }

/* ── Skeleton ────────────────────────────────────────────── */
.skeleton {
    background: linear-gradient(90deg, #f1f5f9 25%, #e2e8f0 50%, #f1f5f9 75%);
    background-size: 200% 100%; animation: shimmer 1.5s infinite; border-radius: var(--radius-sm);
}

/* ── Timeline ────────────────────────────────────────────── */
.timeline { position: relative; padding: 20px 0; margin-left: 20px; }
.timeline::before { content: ''; position: absolute; top: 0; bottom: 0; left: 10px; width: 2px; background: linear-gradient(to bottom, var(--primary-light), #e2e8f0); }
.timeline-item { position: relative; padding-left: 40px; margin-bottom: 28px; }
.timeline-dot { position: absolute; left: 0; top: 4px; width: 22px; height: 22px; border-radius: 50%; background-color: var(--surface); border: 3px solid var(--primary-light); z-index: 2; }
.timeline-content { background-color: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-md); padding: 18px; box-shadow: var(--shadow); }

/* ── Comparison Slider ───────────────────────────────────── */
.comparison-slider { position: relative; width: 100%; aspect-ratio: 4/3; overflow: hidden; border-radius: var(--radius-md); border: 1px solid var(--border); }
.comparison-image { position: absolute; top: 0; left: 0; width: 100%; height: 100%; object-fit: cover; }
.comparison-image.before { z-index: 1; }
.comparison-image.after  { z-index: 2; clip-path: polygon(0 0, 50% 0, 50% 100%, 0 100%); }
.comparison-handle { position: absolute; top: 0; bottom: 0; left: 50%; width: 3px; background-color: #fff; z-index: 3; cursor: ew-resize; transform: translateX(-50%); box-shadow: 0 0 8px rgba(0,0,0,0.3); }
.comparison-handle-button { position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); width: 38px; height: 38px; background-color: #fff; border-radius: 50%; display: flex; align-items: center; justify-content: center; color: var(--primary); box-shadow: 0 4px 12px rgba(0,0,0,0.15); }

/* ── Tabs ────────────────────────────────────────────────── */
.tab-container { margin-bottom: 24px; }
.tab-nav { display: flex; border-bottom: 1px solid var(--border); margin-bottom: 20px; overflow-x: auto; }
.tab-item { padding: 12px 20px; color: var(--text-secondary); font-weight: 500; cursor: pointer; border-bottom: 2px solid transparent; transition: var(--transition); font-size: 0.9rem; white-space: nowrap; flex-shrink: 0; }
.tab-item:hover { color: var(--primary); }
.tab-item.active { color: var(--primary); border-bottom-color: var(--primary); }
.tab-pane { display: none; }
.tab-pane.active { display: block; }

/* ── Wound Card ──────────────────────────────────────────── */
.wound-card { display: flex; flex-direction: column; background-color: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-md); overflow: hidden; transition: box-shadow var(--transition); }
.wound-card:hover { box-shadow: 0 6px 20px rgba(0,0,0,0.07); }
.wound-card-img { height: 180px; width: 100%; object-fit: cover; border-bottom: 1px solid var(--border); }
.wound-card-body { padding: 16px; display: flex; flex-direction: column; gap: 8px; flex-grow: 1; }
.wound-card-actions { padding: 10px 14px; border-top: 1px solid var(--border); background-color: #fafbff; display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px; }

/* ── Notification Badge ──────────────────────────────────── */
.notification-badge { position: absolute; top: -4px; right: -4px; background-color: var(--danger); color: #fff; font-size: 0.62rem; font-weight: 700; width: 16px; height: 16px; border-radius: 50%; display: flex; align-items: center; justify-content: center; border: 2px solid var(--surface); pointer-events: none; }

/* ── Empty State ─────────────────────────────────────────── */
.empty-state { padding: 48px 24px; text-align: center; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 14px; color: var(--text-secondary); }
.empty-state i { font-size: 2.8rem; color: var(--text-muted); opacity: 0.6; }
.empty-state h3 { font-size: 1rem; color: var(--text-primary); }

/* ── Page Header ─────────────────────────────────────────── */
.page-header { margin-bottom: 24px; padding-bottom: 16px; border-bottom: 1px solid var(--border); }
.page-header h1 { font-size: 1.5rem; color: var(--primary); }
.page-header p  { color: var(--text-muted); font-size: 0.9rem; margin-top: 4px; }

/* ── Divider ─────────────────────────────────────────────── */
.divider { border: none; border-top: 1px solid var(--border); margin: 20px 0; }

/* ── Sidebar Nav ─────────────────────────────────────────── */
.sidebar-nav a {
    display: flex; align-items: center; gap: 12px;
    padding: 11px 14px; color: var(--text-secondary);
    border-radius: var(--radius-sm); font-weight: 500; font-size: 0.9rem;
    transition: var(--transition); text-decoration: none;
}
.sidebar-nav a:hover { background-color: #f0f9fb; color: var(--primary); }
.sidebar-nav a.active { background-color: rgba(21, 94, 117, 0.08); color: var(--primary); border-left: 3px solid var(--primary-light); padding-left: 11px; }
.sidebar-nav a i { width: 20px; text-align: center; flex-shrink: 0; }

/* ── Animations ──────────────────────────────────────────── */
@keyframes fadeIn    { from { opacity: 0; } to { opacity: 1; } }
@keyframes slideUp   { from { transform: translateY(15px); opacity: 0; } to { transform: translateY(0); opacity: 1; } }
@keyframes slideInRight { from { transform: translateX(50px); opacity: 0; } to { transform: translateX(0); opacity: 1; } }
@keyframes spin      { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }
@keyframes shimmer   { 0% { background-position: -200% 0; } 100% { background-position: 200% 0; } }
@keyframes pulseRing { 0%, 100% { box-shadow: 0 0 0 0 rgba(6, 182, 212, 0.3); } 50% { box-shadow: 0 0 0 8px rgba(6, 182, 212, 0); } }

.animate-fade-in  { animation: fadeIn 0.3s ease-out; }
.animate-slide-up { animation: slideUp 0.3s ease-out; }

/* ── Dropdown ────────────────────────────────────────────── */
.dropdown { position: relative; display: inline-block; }

.dropdown-menu {
    position: absolute;
    top: calc(100% + 6px);
    left: 0;
    background-color: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    box-shadow: 0 8px 24px rgba(0,0,0,0.1);
    min-width: 140px;
    z-index: 500;
    display: none;
    overflow: hidden;
}
.dropdown-menu.dropdown-menu-right { left: auto; right: 0; }
.dropdown-menu.show { display: block; animation: slideUp 0.15s ease-out; }

.dropdown-item {
    display: block;
    padding: 9px 14px;
    font-size: 0.88rem;
    color: var(--text-primary);
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
}
.dropdown-item:hover { background-color: var(--bg-hover); color: var(--primary); }
.dropdown-item.active { background-color: rgba(6, 182, 212, 0.1); color: var(--primary); font-weight: 600; }
.dropdown-divider { border: none; border-top: 1px solid var(--border); margin: 4px 0; }

/* ── Sidebar Navigation ─────────────────────────────────── */
.sidebar-nav a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 14px;
    color: var(--text-secondary);
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition);
    text-decoration: none;
}
.sidebar-nav a:hover {
    background-color: var(--bg-hover);
    color: var(--primary);
}
.sidebar-nav a.active {
    background: linear-gradient(90deg, rgba(6, 182, 212, 0.14) 0%, rgba(139, 92, 246, 0.08) 100%);
    color: #0e7490;
    font-weight: 700;
    border-left: 3px solid #06b6d4;
}