:root {
    --bg-color: #f8fafc;
    --sidebar-bg: #ffffff;
    --card-bg: #ffffff;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --primary-color: #2563eb;
    --primary-light: #eff6ff;
    --border-color: #e2e8f0;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --purple: #8b5cf6;
    --orange: #f97316;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Roboto', 'Inter', sans-serif;
}

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    overflow-x: hidden;
}

/* Dashboard Layout */
.dashboard-layout {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: 260px;
    background-color: var(--sidebar-bg);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
    overflow-y: auto;
    z-index: 100;
}

.sidebar-header {
    padding: 24px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.sidebar-logo {
    width: 40px;
    height: 40px;
    border-radius: 50%;
}

.sidebar-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
}

.sidebar-subtitle {
    font-size: 0.75rem;
    color: var(--text-secondary);
    display: block;
}

.sidebar-menu {
    list-style: none;
    padding: 12px;
    flex-grow: 1;
}

.sidebar-item {
    margin-bottom: 4px;
}

.sidebar-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.2s;
}

.sidebar-link:hover {
    background-color: var(--primary-light);
    color: var(--primary-color);
}

.sidebar-link.active {
    background-color: var(--primary-light);
    color: var(--primary-color);
}

.sidebar-link i {
    font-size: 1.1rem;
    width: 20px;
    text-align: center;
}

.sidebar-footer {
    padding: 24px 16px;
}

.support-card {
    background-color: #f8fafc;
    border-radius: 12px;
    padding: 16px;
    text-align: center;
    border: 1px solid var(--border-color);
}

.support-icon {
    width: 48px;
    height: 48px;
    background-color: var(--primary-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 12px;
    color: var(--primary-color);
    font-size: 1.5rem;
}

.support-text {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-bottom: 12px;
    line-height: 1.4;
}

.support-link {
    font-size: 0.8rem;
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
}

/* Main Content Wrapper */
.main-content-wrapper {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

/* Top Header */
.top-header {
    height: 72px;
    background-color: var(--card-bg);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 32px;
    position: sticky;
    top: 0;
    z-index: 90;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.03);
}

.search-container {
    position: relative;
    width: 400px;
    max-width: 100%;
}

.search-input {
    width: 100%;
    padding: 12px 16px 12px 42px;
    border-radius: 24px;
    border: 1px solid var(--border-color);
    background-color: #f8fafc;
    font-size: 0.9rem;
    color: var(--text-primary);
    outline: none;
    transition: all 0.3s ease;
}

.search-input:focus {
    border-color: var(--primary-color);
    background-color: #fff;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

.search-icon {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.search-shortcut {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 0.7rem;
    background-color: #e2e8f0;
    padding: 2px 6px;
    border-radius: 4px;
    color: var(--text-secondary);
}

.header-right {
    display: flex;
    align-items: center;
    gap: 20px;
}

.header-icon-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1.2rem;
    cursor: pointer;
    position: relative;
    transition: color 0.2s;
}

.header-icon-btn:hover {
    color: var(--text-primary);
}

.notification-badge {
    position: absolute;
    top: -4px;
    right: -6px;
    background-color: var(--primary-color);
    color: white;
    font-size: 0.65rem;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
}

.user-profile-menu {
    display: flex;
    align-items: center;
    gap: 12px;
    cursor: pointer;
    padding-left: 20px;
    border-left: 1px solid var(--border-color);
}

.header-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    object-fit: cover;
}

.header-user-info {
    display: flex;
    flex-direction: column;
}

.header-user-name {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-primary);
}

.header-user-role {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

/* Dashboard Content */
.dashboard-content {
    display: flex;
    padding: 24px 32px;
    gap: 24px;
    flex-grow: 1;
}

/* Left Main Area */
.main-area {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

/* Greeting Card */
.greeting-card {
    background-color: var(--primary-light);
    border-radius: 16px;
    padding: 32px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.greeting-text h1 {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.greeting-text p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.greeting-illustration {
    height: 120px;
    z-index: 1;
}

/* Stats Container */
.stats-container {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.stat-card {
    background-color: var(--card-bg);
    border-radius: 16px;
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 16px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
}

.stat-icon {
    width: 56px;
    height: 56px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
}

.stat-info {
    display: flex;
    flex-direction: column;
}

.stat-title {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-bottom: 4px;
    font-weight: 500;
}

.stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.stat-trend {
    font-size: 0.75rem;
    display: flex;
    align-items: center;
    gap: 4px;
}

.stat-trend.positive {
    color: var(--success);
}

/* Modüller Grid */
.section-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0;
    text-transform: capitalize;
}

.modules-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 20px;
}

.module-card {
    background-color: var(--card-bg);
    border-radius: 16px;
    padding: 20px;
    display: flex;
    align-items: flex-start;
    gap: 16px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
    cursor: pointer;
    position: relative;
    border: 1px solid transparent;
}

.module-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    border-color: var(--primary-light);
}

.module-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.module-info {
    display: flex;
    flex-direction: column;
}

.module-title {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 6px;
    text-transform: capitalize;
}

.module-desc {
    font-size: 0.75rem;
    color: var(--text-secondary);
    line-height: 1.4;
}

.module-arrow {
    position: absolute;
    bottom: 16px;
    right: 16px;
    color: var(--text-secondary);
    font-size: 0.8rem;
    opacity: 0;
    transform: translateX(-5px);
    transition: all 0.3s ease;
    background: #f1f5f9;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.module-card:hover .module-arrow {
    opacity: 1;
    transform: translateX(0);
}

/* Right Sidebar (Widgets) */
.right-sidebar {
    width: 320px;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.widget {
    background-color: var(--card-bg);
    border-radius: 16px;
    padding: 24px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
}

.widget-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.widget-title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-primary);
}

.widget-link {
    font-size: 0.8rem;
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
}

/* Announcements */
.announcement-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.announcement-item {
    display: flex;
    gap: 12px;
}

.announcement-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    margin-top: 6px;
    flex-shrink: 0;
}

.announcement-content {
    display: flex;
    flex-direction: column;
}

.announcement-title {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.announcement-desc {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-bottom: 6px;
    line-height: 1.4;
}

.announcement-time {
    font-size: 0.7rem;
    color: var(--text-secondary);
}

/* Calendar Widget */
.calendar-widget {
    font-size: 0.85rem;
}

.calendar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
    font-weight: 600;
}

.calendar-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    text-align: center;
    gap: 8px;
}

.calendar-day-name {
    color: var(--text-secondary);
    font-size: 0.75rem;
    margin-bottom: 8px;
}

.calendar-day {
    color: var(--text-primary);
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    margin: auto;
}

.calendar-day.active {
    background-color: var(--primary-color);
    color: white;
}

/* System Status */
.status-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.status-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.85rem;
    color: var(--text-primary);
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--success);
    font-size: 0.8rem;
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--success);
}

/* Footer */
.app-footer {
    padding: 24px 32px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    color: var(--text-secondary);
    font-size: 0.8rem;
    border-top: 1px solid var(--border-color);
    margin-top: auto;
    position: sticky;
    bottom: 0;
    background-color: var(--card-bg);
    /* To cover scrolling content underneath */
    z-index: 80;
    box-shadow: 0 -4px 12px rgba(0, 0, 0, 0.03);
}

.footer-links {
    display: flex;
    gap: 16px;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
}

/* Responsive */
@media (max-width: 1200px) {
    .stats-container {
        grid-template-columns: repeat(2, 1fr);
    }

    .dashboard-content {
        flex-direction: column;
    }

    .right-sidebar {
        width: 100%;
        flex-direction: row;
        flex-wrap: wrap;
    }

    .widget {
        flex: 1;
        min-width: 300px;
    }
}

@media (max-width: 768px) {
    .top-header {
        padding: 12px 16px;
        flex-wrap: wrap;
        gap: 12px;
        height: auto;
    }

    .header-logo {
        margin-right: 0;
    }

    .search-container {
        order: 3;
        width: 100%;
        margin: 0;
    }

    .header-right {
        margin-left: auto;
        gap: 12px;
    }

    .user-profile-menu {
        padding-left: 12px;
    }

    .header-user-info {
        display: none;
        /* Hide names on mobile to save space */
    }

    .dashboard-content {
        padding: 16px;
        gap: 16px;
    }

    .stats-container {
        grid-template-columns: 1fr;
    }

    .app-footer {
        flex-direction: column-reverse;
        padding: 12px 16px;
        gap: 12px;
        text-align: center;
    }

    .app-footer>div.footer-bottom-info {
        flex-direction: column;
        flex-wrap: nowrap;
        justify-content: center;
        gap: 8px !important;
    }

    .footer-separator {
        display: none;
        /* Hide separator line on mobile */
    }

    .system-status-footer {
        flex-wrap: wrap;
        justify-content: center;
        gap: 12px !important;
        border-bottom: 1px solid var(--border-color);
        padding-bottom: 12px;
        width: 100%;
    }
}

/* Genel Ayarlar Modalı Tasarımı */
.modal-overlay {
    position: fixed;
    inset: 0;
    background-color: rgba(15, 23, 42, 0.6);
    backdrop-filter: blur(8px);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.modal-overlay.active {
    opacity: 1;
    pointer-events: auto;
}

.modal-container {
    background: #ffffff;
    width: 90%;
    max-width: 800px;
    max-height: 85vh;
    border-radius: 20px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transform: translateY(20px);
    transition: transform 0.3s ease;
}

.modal-overlay.active .modal-container {
    transform: translateY(0);
}

.modal-header {
    padding: 20px 24px;
    border-bottom: 1px solid #e2e8f0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-title h2 {
    font-size: 1.25rem;
    font-weight: 700;
    color: #0f172a;
}

.modal-title p {
    font-size: 0.8rem;
    color: #64748b;
    margin-top: 2px;
}

.modal-close-btn {
    background: none;
    border: none;
    font-size: 1.25rem;
    color: #64748b;
    cursor: pointer;
    transition: color 0.2s ease;
}

.modal-close-btn:hover {
    color: #0f172a;
}

.modal-body {
    padding: 24px;
    overflow-y: auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

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

.modal-section {
    background: #f8fafc;
    padding: 20px;
    border-radius: 16px;
    border: 1px solid #e2e8f0;
}

.modal-section h3 {
    font-size: 0.95rem;
    font-weight: 700;
    color: #0f172a;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    font-size: 0.75rem;
    font-weight: 700;
    color: #475569;
    text-transform: uppercase;
    margin-bottom: 6px;
}

.form-group input,
.form-group select {
    width: 100%;
    border: 1px solid #cbd5e1;
    border-radius: 8px;
    padding: 10px 12px;
    font-size: 0.85rem;
    color: #0f172a;
    background-color: #ffffff;
    transition: all 0.2s ease;
    outline: none;
}

.form-group input:focus,
.form-group select:focus {
    border-color: #3b82f6;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

.form-group p.help-text {
    font-size: 0.7rem;
    color: #64748b;
    margin-top: 4px;
}

.modal-table-container {
    width: 100%;
    overflow-x: auto;
}

.modal-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.75rem;
    text-align: left;
}

.modal-table th {
    padding: 8px 4px;
    color: #64748b;
    font-weight: 700;
    text-transform: uppercase;
    border-bottom: 2px solid #e2e8f0;
    text-align: center;
}

.modal-table th:first-child {
    text-align: left;
}

.modal-table td {
    padding: 10px 4px;
    border-bottom: 1px solid #f1f5f9;
}

.modal-table td.module-name {
    font-weight: 600;
    color: #334155;
}

.modal-table td.checkbox-cell {
    text-align: center;
}

.modal-table input[type="checkbox"] {
    width: 16px;
    height: 16px;
    cursor: pointer;
}

.modal-footer {
    padding: 16px 24px;
    border-top: 1px solid #e2e8f0;
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    background: #f8fafc;
}

.btn-secondary {
    border: 1px solid #cbd5e1;
    background: #ffffff;
    color: #475569;
    font-weight: 600;
    font-size: 0.8rem;
    padding: 10px 16px;
    border-radius: 8px;
    cursor: pointer;
    transition: background 0.2s ease;
}

.btn-secondary:hover {
    background: #f1f5f9;
}

.btn-primary {
    background: #002cb3;
    color: #ffffff;
    font-weight: 600;
    font-size: 0.8rem;
    padding: 10px 20px;
    border-radius: 8px;
    border: none;
    cursor: pointer;
    box-shadow: 0 4px 6px -1px rgba(0, 44, 179, 0.2);
    transition: background 0.2s ease;
}

.btn-primary:hover {
    background: #002494;
}

.btn-primary:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

/* Toast Bildirim Tasarımı */
.toast-notification {
    position: fixed;
    bottom: 20px;
    right: 20px;
    padding: 12px 24px;
    border-radius: 12px;
    color: #ffffff;
    font-weight: 600;
    font-size: 0.85rem;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    z-index: 1200;
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.toast-notification.active {
    opacity: 1;
    transform: translateY(0);
}

.toast-success {
    background-color: #10b981;
    /* Emerald 500 */
}

.toast-error {
    background-color: #ef4444;
    /* Red 500 */
}

.toast-info {
    background-color: #3b82f6;
    /* Blue 500 */
}

/* Sistem Durumu Yanıp Sönme Efekti */
@keyframes blink {
    0% {
        opacity: 1;
    }

    50% {
        opacity: 0.3;
        box-shadow: 0 0 2px #22c55e;
    }

    100% {
        opacity: 1;
    }
}

.status-dot-blink {
    animation: blink 2s infinite ease-in-out;
}