/* ============================================================
   TU Dresden Corporate Design Theme
   ============================================================ */

:root {
    /* TUD Colors */
    --tud-blue: #001450;
    --tud-blue-light: #005596;
    --tud-blue-dark: #000d33;
    --tud-green: #6D8736;
    --tud-gray-light: #f5f5f5;
    --tud-gray-medium: #e0e0e0;
    --tud-gray-dark: #666666;

    /* Backgrounds */
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-card: #ffffff;
    --bg-card-hover: #f0f1f3;
    --bg-input: #ffffff;

    /* Borders */
    --border-color: #d0d0d0;
    --border-light: #e8e8e8;

    /* Text */
    --text-primary: #001450;
    --text-secondary: #005596;
    --text-muted: #666666;

    /* Accents */
    --accent-blue: #001450;
    --accent-blue-hover: #000d33;
    --accent-blue-light: #005596;
    --accent-cyan: #005596;
    --accent-green: #6D8736;
    --accent-red: #c8102e;
    --accent-yellow: #f5a623;
    --accent-orange: #f5a623;
    --accent-purple: #6b4c9a;

    /* Layout */
    --sidebar-width: 240px;
    --sidebar-collapsed: 60px;
    --topbar-height: 56px;
    --radius: 4px;
    --radius-sm: 2px;
    --shadow: 0 2px 4px rgba(0, 20, 80, 0.1);
    --shadow-lg: 0 4px 8px rgba(0, 20, 80, 0.15);
    --transition: all 0.2s ease;
}

/* Fonts */
html, body {
    font-family: 'Noto Sans', 'Arial', sans-serif;
}

/* Sidebar */
#sidebar {
    background: #ffffff;
    border-right: 2px solid #001450;
}

#sidebar .sidebar-header {
    border-bottom: 2px solid #001450;
}

#sidebar .sidebar-header .logo-text {
    color: #001450;
}

#sidebar nav a {
    color: #001450;
    border-left: 3px solid transparent;
}

#sidebar nav a:hover,
#sidebar nav a.active {
    background: #f0f1f3;
    border-left-color: #001450;
}

#sidebar .sidebar-footer {
    background: #f8f9fa;
    border-top: 1px solid #d0d0d0;
    color: #666666;
}

/* Topbar */
#topbar {
    background: #ffffff;
    border-bottom: 2px solid #001450;
}

#topbar .topbar-left span {
    color: #001450;
}

/* Buttons */
.btn {
    border-radius: var(--radius-sm);
    font-weight: 500;
}

.btn-primary {
    background: #001450;
    border-color: #001450;
}

.btn-primary:hover {
    background: #000d33;
    border-color: #000d33;
}

.btn-secondary {
    background: #ffffff;
    border-color: #001450;
    color: #001450;
}

.btn-secondary:hover {
    background: #f0f1f3;
}

/* Cards */
.card {
    background: #ffffff;
    border: 1px solid #d0d0d0;
    border-radius: var(--radius-sm);
}

.card-header {
    background: #f8f9fa;
    border-bottom: 1px solid #d0d0d0;
    color: #001450;
    font-weight: 600;
}

/* Forms */
input, select, textarea {
    background: #ffffff;
    border: 1px solid #d0d0d0;
    color: #001450;
}

input:focus, select:focus, textarea:focus {
    border-color: #001450;
    outline: none;
    box-shadow: 0 0 0 2px rgba(0, 20, 80, 0.1);
}

/* Tables */
table {
    border-collapse: collapse;
}

th {
    background: #f8f9fa;
    color: #001450;
    font-weight: 600;
    border-bottom: 2px solid #001450;
}

td {
    border-bottom: 1px solid #d0d0d0;
}

tr:hover td {
    background: #f0f1f3;
}

/* Links */
a {
    color: #005596;
}

a:hover {
    color: #001450;
}

/* Badges */
.badge {
    border-radius: var(--radius-sm);
    font-weight: 500;
}

.badge-success {
    background: #6D8736;
    color: #ffffff;
}

.badge-warning {
    background: #f5a623;
    color: #ffffff;
}

.badge-danger {
    background: #c8102e;
    color: #ffffff;
}

.badge-info {
    background: #005596;
    color: #ffffff;
}

/* Progress bars */
.progress-bar {
    background: #001450;
}

/* TUD Logo in footer */
.tud-logo-footer {
    position: fixed;
    bottom: 10px;
    left: 10px;
    z-index: 1000;
}

.tud-logo-footer img {
    height: 40px;
    opacity: 0.8;
}

.tud-logo-footer img:hover {
    opacity: 1;
}

/* Legal footer */
.legal-footer {
    background: #f8f9fa;
    border-top: 1px solid #d0d0d0;
    color: #666666;
    display: flex;
    align-items: center;
    gap: 10px;
}

/* TUD logo in legal footer */
.tud-footer-logo {
    height: 30px;
    width: auto;
    object-fit: contain;
}

.legal-footer a {
    color: #005596;
}

/* Modal */
.modal-box {
    border: 2px solid #001450;
    border-radius: var(--radius-sm);
}

.modal-header {
    background: #f8f9fa;
    border-bottom: 2px solid #001450;
    color: #001450;
    font-weight: 600;
}

/* Toast */
.toast {
    border-radius: var(--radius-sm);
    border-left: 4px solid #001450;
}

.toast-success {
    border-left-color: #6D8736;
}

.toast-error {
    border-left-color: #c8102e;
}

.toast-warning {
    border-left-color: #f5a623;
}

/* Stats cards */
.stat-card {
    background: #ffffff;
    border: 1px solid #d0d0d0;
    border-radius: var(--radius-sm);
    border-left: 4px solid #001450;
}

.stat-card .stat-value {
    color: #001450;
}

.stat-card .stat-label {
    color: #666666;
}

/* Navigation active state */
#sidebar nav a.active {
    background: #e8eaf0;
    border-left-color: #001450;
    font-weight: 600;
}

/* Hamburger menu */
.hamburger {
    color: #001450;
}

/* Help button */
.btn-sm.btn-secondary {
    border-color: #001450;
    color: #001450;
}

/* Override dark theme specific elements */
.auth-container {
    background: #ffffff;
}

.auth-container input {
    background: #ffffff;
    color: #001450;
}

/* Scheduling Gantt: bright background for better readability in TUD theme */
.sched-gantt-wrap {
    background: #ffffff;
}

.sched-gantt-scale {
    background: #f8f9fa;
}

.sched-gantt-scale-track,
.sched-gantt-track {
    background: #ffffff;
    border-color: #d0d0d0;
}

.sched-gantt-day-line {
    background: rgba(0, 20, 80, 0.10);
}

.sched-gantt-hour-line {
    background: rgba(0, 20, 80, 0.05);
}