/**
 * Projectadministratie Bouw - Stylesheet
 * Modulair bouwprojectbeheersysteem
 * Met licht/donker thema ondersteuning
 */

/* ============================================
   CSS VARIABELEN - THEMA KLEUREN
   ============================================ */

:root {
    /* Licht Thema (standaard) */
    --bg-primary: #f5f7fa;
    --bg-secondary: #ffffff;
    --bg-tertiary: #f7fafc;
    --bg-hover: #edf2f7;
    
    --text-primary: #2d3748;
    --text-secondary: #4a5568;
    --text-muted: #718096;
    --text-inverse: #ffffff;
    
    --border-color: #e2e8f0;
    --border-light: #edf2f7;
    
    --header-bg: linear-gradient(135deg, #1e3a5f 0%, #2c5282 100%);
    --header-text: #ffffff;
    
    --nav-bg: #ffffff;
    --nav-active-bg: #ebf4ff;
    --nav-hover-bg: #f7fafc;
    
    --card-bg: #ffffff;
    --card-shadow: 0 2px 4px rgba(0,0,0,0.08);
    
    --input-bg: #ffffff;
    --input-border: #e2e8f0;
    --input-focus: #4299e1;
    
    --accent-primary: #2c5282;
    --accent-secondary: #4299e1;
    --accent-success: #48bb78;
    --accent-warning: #ed8936;
    --accent-danger: #e53e3e;
    
    --table-header-bg: #f8fafc;
    --table-row-hover: #f7fafc;
    --table-border: #edf2f7;
    
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.07);
    --shadow-lg: 0 10px 15px rgba(0,0,0,0.1);
    
    --transition-speed: 0.3s;
}

/* Donker Thema */
[data-theme="dark"] {
    --bg-primary: #1a202c;
    --bg-secondary: #2d3748;
    --bg-tertiary: #252d3d;
    --bg-hover: #3d4a5c;
    
    --text-primary: #f7fafc;
    --text-secondary: #e2e8f0;
    --text-muted: #a0aec0;
    --text-inverse: #1a202c;
    
    --border-color: #4a5568;
    --border-light: #3d4a5c;
    
    --header-bg: linear-gradient(135deg, #1a365d 0%, #2a4365 100%);
    --header-text: #ffffff;
    
    --nav-bg: #2d3748;
    --nav-active-bg: #3d4a5c;
    --nav-hover-bg: #353f50;
    
    --card-bg: #2d3748;
    --card-shadow: 0 2px 4px rgba(0,0,0,0.3);
    
    --input-bg: #3d4a5c;
    --input-border: #4a5568;
    --input-focus: #63b3ed;
    
    --accent-primary: #4299e1;
    --accent-secondary: #63b3ed;
    --accent-success: #68d391;
    --accent-warning: #f6ad55;
    --accent-danger: #fc8181;
    
    --table-header-bg: #252d3d;
    --table-row-hover: #353f50;
    --table-border: #4a5568;
    
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.3);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.4);
    --shadow-lg: 0 10px 15px rgba(0,0,0,0.5);
}

/* ============================================
   RESET & BASE
   ============================================ */

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    transition: background-color var(--transition-speed), color var(--transition-speed);
}

a {
    color: var(--accent-primary);
    text-decoration: none;
}

a:hover {
    color: var(--accent-secondary);
}

.container {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* ============================================
   HEADER
   ============================================ */

.main-header {
    background: var(--header-bg);
    color: var(--header-text);
    padding: 15px 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: var(--shadow-md);
    position: relative;
    z-index: 100;
}

.logo {
    font-size: 1.5rem;
    font-weight: 600;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 15px;
}

.user-info {
    display: flex;
    flex-direction: column;
    text-align: right;
}

.user-info small {
    opacity: 0.8;
    font-size: 0.85rem;
}

/* Theme Toggle Button */
.theme-toggle {
    background: rgba(255,255,255,0.15);
    border: 1px solid rgba(255,255,255,0.3);
    color: white;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    transition: all 0.3s ease;
}

.theme-toggle:hover {
    background: rgba(255,255,255,0.25);
    transform: scale(1.1);
}

.theme-toggle .icon-sun,
.theme-toggle .icon-moon {
    transition: opacity 0.3s, transform 0.3s;
}

[data-theme="dark"] .theme-toggle .icon-sun {
    display: inline;
}

[data-theme="dark"] .theme-toggle .icon-moon {
    display: none;
}

.theme-toggle .icon-sun {
    display: none;
}

.theme-toggle .icon-moon {
    display: inline;
}

/* ============================================
   NAVIGATION
   ============================================ */

.main-nav {
    background: var(--nav-bg);
    width: 260px;
    position: fixed;
    left: 0;
    top: 70px;
    bottom: 0;
    overflow-y: auto;
    border-right: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    transition: background-color var(--transition-speed), border-color var(--transition-speed);
}

.nav-menu {
    list-style: none;
    padding: 15px 0;
}

.nav-menu li a {
    display: flex;
    align-items: center;
    padding: 12px 20px;
    color: var(--text-secondary);
    text-decoration: none;
    transition: all 0.2s ease;
    border-left: 3px solid transparent;
}

.nav-menu li a:hover {
    background: var(--nav-hover-bg);
    color: var(--accent-primary);
    border-left-color: var(--accent-primary);
}

.nav-menu li.active a {
    background: var(--nav-active-bg);
    color: var(--accent-primary);
    border-left-color: var(--accent-primary);
    font-weight: 500;
}

.nav-menu li.disabled a {
    color: var(--text-muted);
    cursor: not-allowed;
}

.nav-menu li.disabled a:hover {
    background: transparent;
    border-left-color: transparent;
}

.nav-icon {
    margin-right: 12px;
    font-size: 1.1rem;
}

.nav-section {
    padding: 15px 20px 5px;
}

.nav-section-title {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge {
    background: var(--accent-warning);
    color: white;
    font-size: 0.7rem;
    padding: 2px 8px;
    border-radius: 10px;
    margin-left: auto;
}

/* ============================================
   MAIN CONTENT
   ============================================ */

.main-content {
    margin-left: 260px;
    margin-top: 70px;
    padding: 30px;
    min-height: calc(100vh - 70px);
    transition: background-color var(--transition-speed);
}

.page-header {
    margin-bottom: 30px;
}

.page-header h1 {
    color: var(--text-primary);
    font-size: 1.8rem;
    font-weight: 600;
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 15px;
}

.breadcrumb a {
    color: var(--accent-primary);
}

/* ============================================
   CARDS
   ============================================ */

.card {
    background: var(--card-bg);
    border-radius: 10px;
    box-shadow: var(--card-shadow);
    margin-bottom: 20px;
    transition: background-color var(--transition-speed), box-shadow var(--transition-speed);
}

.card-header {
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.card-header h2 {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-primary);
}

.card-body {
    padding: 20px;
}

/* ============================================
   STATISTICS GRID
   ============================================ */

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background: var(--card-bg);
    padding: 25px;
    border-radius: 10px;
    text-align: center;
    box-shadow: var(--card-shadow);
    transition: transform 0.2s, background-color var(--transition-speed);
}

.stat-card:hover {
    transform: translateY(-3px);
}

.stat-icon {
    font-size: 2.5rem;
    margin-bottom: 10px;
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--accent-primary);
}

.stat-label {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-top: 5px;
}

/* ============================================
   TABLES
   ============================================ */

.table-container {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
}

th, td {
    padding: 12px 15px;
    text-align: left;
    border-bottom: 1px solid var(--table-border);
}

th {
    background: var(--table-header-bg);
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

tbody tr {
    transition: background-color 0.2s;
}

tbody tr:hover {
    background: var(--table-row-hover);
}

td {
    color: var(--text-primary);
}

/* ============================================
   FORMS
   ============================================ */

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text-secondary);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid var(--input-border);
    border-radius: 6px;
    font-size: 1rem;
    background: var(--input-bg);
    color: var(--text-primary);
    transition: border-color 0.2s, box-shadow 0.2s, background-color var(--transition-speed);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--input-focus);
    box-shadow: 0 0 0 3px rgba(66, 153, 225, 0.2);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-muted);
}

.form-group small {
    display: block;
    margin-top: 5px;
    color: var(--text-muted);
    font-size: 0.85rem;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.form-actions {
    display: flex;
    gap: 10px;
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

/* Checkbox styling */
.form-group input[type="checkbox"] {
    width: auto;
    margin-right: 10px;
}

/* ============================================
   BUTTONS
   ============================================ */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 20px;
    border: none;
    border-radius: 6px;
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.2s ease;
    gap: 8px;
}

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

.btn-primary:hover {
    background: var(--accent-secondary);
    color: white;
    transform: translateY(-1px);
}

.btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
}

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

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

.btn-danger:hover {
    background: #c53030;
    color: white;
}

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

.btn-success:hover {
    background: #38a169;
    color: white;
}

.btn-small {
    padding: 6px 12px;
    font-size: 0.85rem;
}

.btn-block {
    width: 100%;
}

/* ============================================
   ALERTS
   ============================================ */

.alert {
    padding: 15px 20px;
    border-radius: 6px;
    margin-bottom: 20px;
    display: flex;
    align-items: flex-start;
    gap: 10px;
}

.alert-success {
    background: rgba(72, 187, 120, 0.15);
    color: var(--accent-success);
    border: 1px solid var(--accent-success);
}

.alert-error {
    background: rgba(229, 62, 62, 0.15);
    color: var(--accent-danger);
    border: 1px solid var(--accent-danger);
}

.alert-warning {
    background: rgba(237, 137, 54, 0.15);
    color: var(--accent-warning);
    border: 1px solid var(--accent-warning);
}

.alert-info {
    background: rgba(66, 153, 225, 0.15);
    color: var(--accent-secondary);
    border: 1px solid var(--accent-secondary);
}

/* ============================================
   STATUS BADGES
   ============================================ */

.status {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
}

.status-gepland {
    background: rgba(66, 153, 225, 0.15);
    color: var(--accent-secondary);
}

.status-lopend {
    background: rgba(72, 187, 120, 0.15);
    color: var(--accent-success);
}

.status-gepauzeerd {
    background: rgba(237, 137, 54, 0.15);
    color: var(--accent-warning);
}

.status-afgerond {
    background: rgba(159, 122, 234, 0.15);
    color: #9f7aea;
}

/* ============================================
   FASE INDICATOR
   ============================================ */

.fase-indicator {
    display: flex;
    gap: 5px;
    margin: 20px 0;
}

.fase-step {
    flex: 1;
    height: 8px;
    background: var(--border-color);
    border-radius: 4px;
    position: relative;
}

.fase-step.completed {
    background: var(--accent-success);
}

.fase-step.current {
    background: var(--accent-secondary);
}

.fase-labels {
    display: flex;
    justify-content: space-between;
    margin-top: 8px;
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* ============================================
   EMPTY STATE
   ============================================ */

.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-muted);
}

.empty-icon {
    font-size: 4rem;
    margin-bottom: 20px;
    opacity: 0.5;
}

.empty-state h3 {
    color: var(--text-secondary);
    margin-bottom: 10px;
}

.empty-state p {
    margin-bottom: 20px;
}

/* ============================================
   TABS
   ============================================ */

.tabs {
    display: flex;
    border-bottom: 2px solid var(--border-color);
    margin-bottom: 20px;
}

.tab {
    padding: 12px 24px;
    color: var(--text-muted);
    text-decoration: none;
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    transition: all 0.2s;
}

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

.tab.active {
    color: var(--accent-primary);
    border-bottom-color: var(--accent-primary);
    font-weight: 500;
}

/* ============================================
   LOGIN PAGE
   ============================================ */

.login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: var(--bg-primary);
}

.login-box {
    background: var(--card-bg);
    padding: 40px;
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    width: 100%;
    max-width: 400px;
    transition: background-color var(--transition-speed);
}

.login-box h1 {
    text-align: center;
    margin-bottom: 10px;
    color: var(--text-primary);
}

.login-box .subtitle {
    text-align: center;
    color: var(--text-muted);
    margin-bottom: 30px;
}

/* ============================================
   FILTERS
   ============================================ */

.filters {
    background: var(--bg-tertiary);
    padding: 20px;
    border-radius: 8px;
    margin-bottom: 20px;
    border: 1px solid var(--border-color);
}

.filters-row {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
    align-items: flex-end;
}

.filters-row .form-group {
    margin-bottom: 0;
    flex: 1;
    min-width: 150px;
}

/* ============================================
   DETAIL VIEW
   ============================================ */

.detail-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.detail-section {
    margin-bottom: 30px;
}

.detail-section h3 {
    color: var(--text-secondary);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border-color);
}

.detail-row {
    display: flex;
    padding: 10px 0;
    border-bottom: 1px solid var(--border-light);
}

.detail-label {
    width: 140px;
    color: var(--text-muted);
    font-size: 0.9rem;
}

.detail-value {
    flex: 1;
    color: var(--text-primary);
}

/* ============================================
   FOOTER
   ============================================ */

.main-footer {
    background: var(--bg-secondary);
    padding: 20px;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-left: 260px;
    border-top: 1px solid var(--border-color);
    transition: background-color var(--transition-speed), border-color var(--transition-speed);
}

/* ============================================
   RESPONSIVE
   ============================================ */

@media (max-width: 768px) {
    .main-nav {
        transform: translateX(-100%);
        transition: transform 0.3s ease;
        z-index: 99;
    }
    
    .main-nav.open {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .main-footer {
        margin-left: 0;
    }
    
    .header-right {
        gap: 10px;
    }
    
    .user-info {
        display: none;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .detail-grid {
        grid-template-columns: 1fr;
    }
    
    .filters-row {
        flex-direction: column;
    }
    
    .card-header {
        flex-direction: column;
        gap: 15px;
        align-items: flex-start;
    }
}

@media (max-width: 480px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .main-header {
        padding: 10px 15px;
    }
    
    .logo {
        font-size: 1.2rem;
    }
    
    .main-content {
        padding: 15px;
    }
    
    .login-box {
        padding: 25px;
        margin: 15px;
    }
}

/* ============================================
   ANIMATIONS
   ============================================ */

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

.card {
    animation: fadeIn 0.3s ease;
}

/* Theme transition */
body,
.card,
.main-nav,
.main-footer,
.login-box,
input,
select,
textarea,
table,
th,
td {
    transition: background-color var(--transition-speed), 
                border-color var(--transition-speed), 
                color var(--transition-speed);
}