/* CSS Variables */
:root {
    --primary: #1e40af;
    --primary-dark: #1e3a8a;
    --primary-light: #3b82f6;
    --success: #059669;
    --warning: #d97706;
    --danger: #dc2626;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
}

/* Reset */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--gray-100);
    color: var(--gray-800);
    line-height: 1.5;
}

/* Utility Classes */
.hidden { display: none !important; }
.text-muted { color: var(--gray-500); }

/* Views */
.view {
    min-height: 100vh;
}

/* Login */
.login-container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 2rem;
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
}

.login-logo {
    text-align: center;
    margin-bottom: 2rem;
    color: white;
}

.login-logo h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.login-logo p {
    opacity: 0.9;
    font-size: 1.1rem;
}

.login-form {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
    width: 100%;
    max-width: 400px;
}

.demo-credentials {
    text-align: center;
    margin-top: 1rem;
    font-size: 0.85rem;
    color: var(--gray-500);
}

/* Header */
.header {
    background: white;
    padding: 1rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--gray-200);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
}

.header-right {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.current-user {
    font-size: 0.9rem;
    color: var(--gray-600);
}

/* Navigation Tabs */
.nav-tabs {
    background: white;
    display: flex;
    overflow-x: auto;
    border-bottom: 1px solid var(--gray-200);
    padding: 0 1rem;
}

.nav-tab {
    padding: 1rem 1.25rem;
    border: none;
    background: none;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--gray-600);
    cursor: pointer;
    white-space: nowrap;
    border-bottom: 2px solid transparent;
    transition: all 0.2s;
}

.nav-tab:hover {
    color: var(--primary);
}

.nav-tab.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
}

/* Main Content */
.main-content {
    padding: 1.5rem;
    max-width: 1200px;
    margin: 0 auto;
}

.tab-content {
    animation: fadeIn 0.2s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Cards */
.card {
    background: white;
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    margin-bottom: 1rem;
}

.card h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--gray-800);
}

.card-subtitle {
    font-size: 0.9rem;
    color: var(--gray-500);
    margin-top: -0.5rem;
    margin-bottom: 1rem;
}

/* Dashboard Grid */
.dashboard-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

@media (max-width: 768px) {
    .dashboard-grid {
        grid-template-columns: 1fr;
    }
}

/* Inventory Summary */
.inventory-summary {
    display: grid;
    gap: 0.75rem;
}

.inventory-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem;
    background: var(--gray-50);
    border-radius: 8px;
    border-left: 4px solid var(--primary);
}

.inventory-item.schedule-II { border-left-color: var(--danger); }
.inventory-item.schedule-III { border-left-color: var(--warning); }
.inventory-item.schedule-IV { border-left-color: var(--primary); }
.inventory-item.schedule-V { border-left-color: var(--success); }

.inventory-item-name {
    font-weight: 500;
}

.inventory-item-details {
    font-size: 0.85rem;
    color: var(--gray-500);
}

.inventory-item-qty {
    font-weight: 600;
    font-size: 1.1rem;
    background: white;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

/* Activity List */
.activity-list {
    display: grid;
    gap: 0.5rem;
    max-height: 400px;
    overflow-y: auto;
}

.activity-item {
    padding: 0.75rem;
    background: var(--gray-50);
    border-radius: 8px;
    font-size: 0.9rem;
}

.activity-item-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.25rem;
}

.activity-type {
    font-weight: 600;
    text-transform: capitalize;
}

.activity-type.administer { color: var(--primary); }
.activity-type.waste { color: var(--warning); }
.activity-type.receive { color: var(--success); }

.activity-time {
    font-size: 0.8rem;
    color: var(--gray-400);
}

.activity-details {
    color: var(--gray-600);
}

/* Forms */
.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--gray-700);
    margin-bottom: 0.5rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--gray-300);
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(30, 64, 175, 0.1);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

@media (max-width: 480px) {
    .form-row {
        grid-template-columns: 1fr;
    }
}

.balance-display {
    padding: 0.75rem;
    background: var(--gray-100);
    border-radius: 8px;
    font-size: 1.25rem;
    font-weight: 600;
    text-align: center;
}

/* Witness Section */
.witness-section {
    background: var(--gray-50);
    padding: 1rem;
    border-radius: 8px;
    margin-top: 1rem;
    margin-bottom: 1rem;
    border: 1px dashed var(--gray-300);
}

.witness-section h4 {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--gray-700);
    margin-bottom: 0.75rem;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    font-weight: 500;
    border-radius: 8px;
    border: none;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.btn-block {
    width: 100%;
}

.btn-primary {
    background: var(--primary);
    color: white;
}

.btn-primary:hover {
    background: var(--primary-dark);
}

.btn-warning {
    background: var(--warning);
    color: white;
}

.btn-warning:hover {
    background: #b45309;
}

.btn-outline {
    background: white;
    border: 1px solid var(--gray-300);
    color: var(--gray-700);
}

.btn-outline:hover {
    background: var(--gray-50);
    border-color: var(--gray-400);
}

/* Count Items */
.count-items {
    display: grid;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.count-item {
    display: grid;
    grid-template-columns: 1fr auto auto;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: var(--gray-50);
    border-radius: 8px;
}

.count-item-name {
    font-weight: 500;
}

.count-item-expected {
    font-size: 0.9rem;
    color: var(--gray-500);
}

.count-item input {
    width: 80px;
    padding: 0.5rem;
    text-align: center;
    font-size: 1.1rem;
    font-weight: 600;
    border: 2px solid var(--gray-300);
    border-radius: 8px;
}

.count-item input:focus {
    border-color: var(--primary);
    outline: none;
}

.count-item input.discrepancy {
    border-color: var(--danger);
    background: #fef2f2;
}

/* Reports */
.reports-grid {
    display: grid;
    grid-template-columns: 250px 1fr;
    gap: 1.5rem;
}

@media (max-width: 768px) {
    .reports-grid {
        grid-template-columns: 1fr;
    }
}

.report-buttons {
    display: grid;
    gap: 0.5rem;
}

.report-output {
    min-height: 300px;
    max-height: 500px;
    overflow: auto;
}

.report-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

.report-table th,
.report-table td {
    padding: 0.75rem;
    text-align: left;
    border-bottom: 1px solid var(--gray-200);
}

.report-table th {
    font-weight: 600;
    background: var(--gray-50);
    position: sticky;
    top: 0;
}

.report-table tr:hover {
    background: var(--gray-50);
}

/* Toast */
.toast {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    padding: 1rem 1.5rem;
    background: var(--gray-800);
    color: white;
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
    z-index: 1000;
    animation: slideIn 0.3s ease;
}

.toast.success { background: var(--success); }
.toast.error { background: var(--danger); }
.toast.warning { background: var(--warning); }

@keyframes slideIn {
    from { transform: translateY(20px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

/* Schedule badges */
.schedule-badge {
    display: inline-block;
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
}

.schedule-II { background: #fef2f2; color: var(--danger); }
.schedule-III { background: #fffbeb; color: var(--warning); }
.schedule-IV { background: #eff6ff; color: var(--primary); }
.schedule-V { background: #ecfdf5; color: var(--success); }

/* Mobile Optimizations */
@media (max-width: 480px) {
    .header {
        padding: 0.75rem 1rem;
    }

    .header-title {
        font-size: 1.25rem;
    }

    .main-content {
        padding: 1rem;
    }

    .card {
        padding: 1rem;
    }

    .nav-tab {
        padding: 0.75rem 1rem;
        font-size: 0.85rem;
    }
}