/* ===== RESET & GLOBAL STYLES ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 20px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    background: white;
    border-radius: 10px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.2);
    overflow: hidden;
}

/* ===== HEADER ===== */
.header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 30px;
    text-align: center;
}

.header h1 {
    font-size: 2.5em;
    margin-bottom: 10px;
}

.header p {
    font-size: 1.1em;
    opacity: 0.9;
}

/* ===== NAVIGATION TABS ===== */
.nav-tabs {
    display: flex;
    background: #f8f9fa;
    border-bottom: 2px solid #dee2e6;
}

.nav-tab {
    flex: 1;
    padding: 20px;
    text-align: center;
    cursor: pointer;
    background: #e9ecef;
    border: none;
    font-size: 1em;
    font-weight: 600;
    transition: all 0.3s ease;
    color: #495057;
}

.nav-tab:hover {
    background: #dee2e6;
}

.nav-tab.active {
    background: white;
    color: #667eea;
    border-bottom: 3px solid #667eea;
}

/* ===== SECTIONS ===== */
.section {
    display: none;
    padding: 30px;
}

.section.active {
    display: block;
}

.section h2 {
    color: #333;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid #667eea;
}

/* ===== FORMS ===== */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #333;
    font-size: 0.95em;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 2px solid #e0e0e0;
    border-radius: 6px;
    font-size: 1em;
    transition: border-color 0.3s ease;
    font-family: inherit;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #667eea;
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

/* ===== BUTTONS ===== */
.button-group {
    display: flex;
    gap: 10px;
    margin-top: 20px;
}

.btn {
    padding: 12px 30px;
    border: none;
    border-radius: 6px;
    font-size: 1em;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
}

.btn-success {
    background: #28a745;
    color: white;
}

.btn-success:hover {
    background: #218838;
}

.btn-secondary {
    background: #6c757d;
    color: white;
}

.btn-secondary:hover {
    background: #5a6268;
}

.btn-danger {
    background: #dc3545;
    color: white;
}

.btn-danger:hover {
    background: #c82333;
}

.btn-info {
    background: #17a2b8;
    color: white;
}

.btn-info:hover {
    background: #138496;
}

.btn-warning {
    background: #ffc107;
    color: #212529;
}

.btn-warning:hover {
    background: #e0a800;
}

/* ===== ACTION BAR ===== */
.action-bar {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

/* ===== SEARCH BOX ===== */
.search-box-container {
    margin-bottom: 20px;
}

.search-box {
    width: 100%;
    padding: 12px;
    border: 2px solid #e0e0e0;
    border-radius: 6px;
    font-size: 1em;
}

.search-box:focus {
    outline: none;
    border-color: #667eea;
}

/* ===== PROJECT CARDS ===== */
.project-card {
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 20px;
    background: #f8f9fa;
    transition: all 0.3s ease;
}

.project-card:hover {
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    transform: translateY(-2px);
}

.project-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
    padding-bottom: 15px;
    border-bottom: 2px solid #dee2e6;
}

.project-header h3 {
    color: #667eea;
    margin: 0;
}

.project-id {
    background: #667eea;
    color: white;
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.9em;
    font-weight: 600;
}

.project-info {
    margin-bottom: 15px;
}

.project-info p {
    margin: 8px 0;
    color: #333;
}

.project-info strong {
    color: #667eea;
}

.project-stats {
    display: flex;
    gap: 20px;
    margin: 15px 0;
    padding: 15px;
    background: white;
    border-radius: 6px;
}

.stat-item {
    flex: 1;
    text-align: center;
}

.stat-value {
    font-size: 1.5em;
    font-weight: bold;
    color: #667eea;
}

.stat-label {
    font-size: 0.9em;
    color: #666;
}

.project-actions {
    display: flex;
    gap: 10px;
    margin-top: 15px;
}

/* ===== LINE ITEMS ===== */
.line-items-section {
    margin-top: 20px;
    padding-top: 20px;
    border-top: 2px solid #dee2e6;
}

.line-items-section h4 {
    color: #333;
    margin-bottom: 15px;
}

.line-item {
    background: white;
    border-left: 4px solid #667eea;
    padding: 15px;
    margin-bottom: 10px;
    border-radius: 4px;
}

.line-item-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
}

.line-item-category {
    display: inline-block;
    padding: 5px 15px;
    border-radius: 20px;
    font-weight: 600;
    font-size: 0.9em;
}

.category-supplies {
    background: #d4edda;
    color: #155724;
}

.category-labor {
    background: #d1ecf1;
    color: #0c5460;
}

.category-administrative {
    background: #fff3cd;
    color: #856404;
}

.line-item-cost {
    font-size: 1.2em;
    font-weight: bold;
    color: #28a745;
}

.line-item-details {
    margin-top: 10px;
}

.line-item-details p {
    margin: 5px 0;
    color: #666;
}

.line-item-actions {
    display: flex;
    gap: 10px;
    margin-top: 10px;
}

/* ===== CATEGORY INPUTS ===== */
.category-inputs {
    background: #f8f9fa;
    padding: 20px;
    border-radius: 6px;
    margin-bottom: 20px;
}

.category-inputs h4 {
    color: #667eea;
    margin-bottom: 15px;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
}

/* ===== ALERTS ===== */
.alert {
    padding: 15px 20px;
    border-radius: 6px;
    margin-bottom: 20px;
    font-weight: 500;
}

.alert-success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.alert-error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.alert-info {
    background: #d1ecf1;
    color: #0c5460;
    border: 1px solid #bee5eb;
}

/* ===== TOAST NOTIFICATION ===== */
.toast {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background: #333;
    color: white;
    padding: 15px 25px;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.3);
    z-index: 1000;
    opacity: 0;
    transform: translateX(400px);
    transition: all 0.3s ease;
}

.toast.show {
    opacity: 1;
    transform: translateX(0);
}

.toast.success {
    background: #28a745;
}

.toast.error {
    background: #dc3545;
}

.toast.info {
    background: #17a2b8;
}

/* ===== NO DATA MESSAGE ===== */
.no-data {
    text-align: center;
    padding: 40px;
    color: #999;
    font-size: 1.2em;
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 768px) {
    .header h1 {
        font-size: 1.8em;
    }

    .nav-tab {
        font-size: 0.9em;
        padding: 15px 10px;
    }

    .section {
        padding: 20px;
    }

    .project-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }

    .project-stats {
        flex-direction: column;
        gap: 10px;
    }

    .button-group {
        flex-direction: column;
    }

    .btn {
        width: 100%;
    }

    .action-bar {
        flex-direction: column;
    }

    .action-bar .btn {
        width: 100%;
    }

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

/* ===== PRINT STYLES ===== */
@media print {
    body {
        background: white;
        padding: 0;
    }

    .container {
        box-shadow: none;
    }

    .header {
        background: white;
        color: black;
        border-bottom: 2px solid #333;
    }

    .nav-tabs,
    .btn,
    .action-bar,
    .search-box-container {
        display: none !important;
    }

    .section {
        display: block !important;
    }

    .project-card {
        page-break-inside: avoid;
        border: 1px solid #333;
    }
}