:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --secondary: #64748b;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --info: #3b82f6;
    --bg-main: #f8fafc;
    --bg-card: #ffffff;
    --text-main: #1e293b;
    --text-muted: #64748b;
    --border: #e2e8f0;
    --radius: 8px;
    --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
}

* {
    box-sizing: border-box;
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
}

body {
    margin: 0;
    background-color: var(--bg-main);
    color: var(--text-main);
    min-height: 100vh;
}

/* Layout */
.app-container {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* Header & Nav */
header {
    background: white;
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.top-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 2rem;
    border-bottom: 1px solid var(--border);
}

.logo-area {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--primary);
}

.top-actions {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.nav-bar {
    display: flex;
    padding: 0 2rem;
    gap: 2rem;
    background: white;
}

.nav-link {
    padding: 1rem 0;
    text-decoration: none;
    color: var(--text-muted);
    font-weight: 500;
    border-bottom: 2px solid transparent;
    transition: all 0.2s;
}

.nav-link:hover, .nav-link.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
}

/* Main Content */
main {
    flex: 1;
    padding: 2rem;
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
}

.page-header {
    margin-bottom: 2rem;
}

.page-title {
    margin: 0;
    font-size: 1.875rem;
    font-weight: 700;
}

/* Components */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.card {
    background: var(--bg-card);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    padding: 1.5rem;
    box-shadow: var(--shadow);
    overflow: hidden;
}

.card-title {
    font-size: 0.875rem;
    color: var(--text-muted);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.025em;
    margin-bottom: 0.5rem;
}

.card-value {
    font-size: 2rem;
    font-weight: 700;
}

/* Table */
.table-container {
    background: white;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    overflow: hidden;
    margin-top: 1.5rem;
}

table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
}

th {
    background: #f8fafc;
    padding: 1rem;
    font-weight: 600;
    color: var(--text-muted);
    border-bottom: 1px solid var(--border);
}

td {
    padding: 1rem;
    border-bottom: 1px solid var(--border);
}

tr:last-child td {
    border-bottom: none;
}

/* Status Badges */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
}

.badge-pending { background: #fef3c7; color: #92400e; }
.badge-approved { background: #dcfce7; color: #166534; }
.badge-rejected { background: #fee2e2; color: #991b1b; }
.badge-expired { background: #f1f5f9; color: #475569; }

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.5rem 1rem;
    border-radius: var(--radius);
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.2s;
    border: 1px solid transparent;
}

.btn-primary { background: var(--primary); color: white; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-outline { background: transparent; border-color: var(--border); color: var(--text-main); }
.btn-outline:hover { background: #f8fafc; }
.btn-sm { padding: 0.25rem 0.5rem; font-size: 0.875rem; }

/* Alerts */
.alert {
    padding: 1rem;
    border-radius: var(--radius);
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.alert-warning { background: #fffbeb; border: 1px solid #fde68a; color: #92400e; }
.alert-danger { background: #fef2f2; border: 1px solid #fecaca; color: #991b1b; }

/* Filter Bar */
.filter-bar {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
    align-items: center;
    flex-wrap: wrap;
}

.select-input {
    padding: 0.5rem;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    min-width: 150px;
}

/* Icons Placeholder */
.placeholder-icon {
    width: 24px;
    height: 24px;
    display: inline-block;
    background: currentColor;
    mask-size: contain;
    mask-repeat: no-repeat;
    mask-position: center;
}

/* Progress Section */
.stat-group {
    margin-bottom: 1.5rem;
}

.stat-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.progress-bar {
    height: 8px;
    background: var(--border);
    border-radius: 4px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: var(--primary);
}

/* List states for UI */
.list-unstyled {
    list-style: none;
    padding: 0;
    margin: 0;
}

.list-item {
    display: flex;
    justify-content: space-between;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border);
}

.list-item:last-child {
    border-bottom: none;
}

/* Review Page Specifics */
.review-grid {
    display: grid;
    grid-template-columns: 1fr 350px;
    gap: 2rem;
}
.section-label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
    display: block;
}
.photo-strip {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
}
.photo-item {
    flex: 1;
    aspect-ratio: 1;
    background: #f1f5f9;
    border-radius: var(--radius);
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border);
}
.photo-tag {
    position: absolute;
    bottom: 0.5rem;
    left: 0.5rem;
    background: rgba(0,0,0,0.6);
    color: white;
    padding: 0.125rem 0.5rem;
    border-radius: 4px;
    font-size: 0.625rem;
    text-transform: uppercase;
}
.check-icon {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    background: var(--success);
    color: white;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 10px;
}
.review-textarea {
    width: 100%;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 0.75rem;
    min-height: 100px;
    margin-bottom: 1.5rem;
    font-family: inherit;
}