:root {
    --internorm-red: #e30613;
    --internorm-dark-red: #b5050f;
    --internorm-gray: #4a4a4a;
    --internorm-light-gray: #f5f5f5;
    --internorm-white: #ffffff;
    --internorm-black: #1a1a1a;
    --success-green: #28a745;
    --warning-orange: #f39c12;
    --danger-red: #dc3545;
    --info-blue: #17a2b8;
    --font-primary: 'Open Sans', Arial, sans-serif;
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
}

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

body {
    font-family: var(--font-primary);
    background-color: var(--internorm-light-gray);
    color: var(--internorm-gray);
    line-height: 1.6;
    min-height: 100vh;
}

.main-header {
    background: linear-gradient(135deg, var(--internorm-white) 0%, var(--internorm-light-gray) 100%);
    border-bottom: 3px solid var(--internorm-red);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    padding: var(--spacing-md) var(--spacing-xl);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-container {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.logo-img {
    height: 60px;
    width: auto;
    object-fit: contain;
}

.logo-text {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
}

.logo-ibs {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--internorm-red);
    letter-spacing: -1px;
}

.logo-fenster {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--internorm-red);
    text-transform: uppercase;
    letter-spacing: 2px;
}

.logo-subtitle {
    font-size: 0.85rem;
    color: #666;
    font-weight: 400;
}

.header-title {
    text-align: right;
}

.header-title h1 {
    color: var(--internorm-gray);
    font-size: 1.5rem;
    font-weight: 300;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.version {
    display: inline-block;
    background: var(--internorm-red);
    color: white;
    padding: 2px 8px;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
    margin-top: var(--spacing-xs);
}

.main-nav {
    background: var(--internorm-white);
    border-bottom: 1px solid #e0e0e0;
    padding: 0 var(--spacing-xl);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    gap: var(--spacing-xs);
}

.nav-tab {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    background: none;
    border: none;
    border-bottom: 3px solid transparent;
    color: var(--internorm-gray);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
}

.nav-tab:hover {
    color: var(--internorm-red);
    background: rgba(227, 6, 19, 0.05);
}

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

.nav-tab .icon {
    font-size: 1.2em;
}

.badge {
    position: absolute;
    top: 5px;
    right: 5px;
    background: var(--danger-red);
    color: white;
    font-size: 0.7rem;
    padding: 2px 6px;
    border-radius: 10px;
    font-weight: 700;
}

.main-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-xl);
}

.content-header {
    margin-bottom: var(--spacing-xl);
}

.content-header h2 {
    color: var(--internorm-gray);
    font-size: 1.8rem;
    font-weight: 300;
    margin-bottom: var(--spacing-sm);
}

.subtitle {
    color: #666;
    font-size: 0.95rem;
}

.card {
    background: var(--internorm-white);
    border-radius: var(--radius-lg);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
    border-top: 4px solid var(--internorm-red);
}

.card-header {
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid #eee;
}

.card-header h3 {
    color: var(--internorm-gray);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
    align-items: end;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.form-group label {
    font-weight: 600;
    color: var(--internorm-gray);
    font-size: 0.9rem;
}

.form-group small {
    color: #666;
    font-size: 0.8rem;
}

input[type="text"],
input[type="email"],
input[type="password"],
select {
    padding: var(--spacing-md);
    border: 2px solid #e0e0e0;
    border-radius: var(--radius-md);
    font-family: inherit;
    font-size: 0.95rem;
    transition: all 0.3s ease;
}

input:focus,
select:focus {
    outline: none;
    border-color: var(--internorm-red);
    box-shadow: 0 0 0 3px rgba(227, 6, 19, 0.1);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    border: none;
    border-radius: var(--radius-md);
    font-family: inherit;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: uppercase;
    font-size: 0.85rem;
    letter-spacing: 0.5px;
}

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

.btn-primary:hover {
    background: var(--internorm-dark-red);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(227, 6, 19, 0.3);
}

.btn-secondary {
    background: var(--internorm-gray);
    color: white;
}

.btn-secondary:hover {
    background: #333;
    transform: translateY(-2px);
}

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

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

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.stat-card {
    background: var(--internorm-white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    text-align: center;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    border-left: 4px solid var(--internorm-red);
}

.stat-card.warning {
    border-left-color: var(--warning-orange);
}

.stat-value {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--internorm-red);
    line-height: 1;
}

.stat-card.warning .stat-value {
    color: var(--warning-orange);
}

.stat-label {
    color: #666;
    font-size: 0.9rem;
    margin-top: var(--spacing-sm);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.employee-grid {
    display: grid;
    gap: var(--spacing-md);
}

.employee-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg);
    background: var(--internorm-light-gray);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--internorm-red);
    transition: all 0.3s ease;
}

.employee-item:hover {
    transform: translateX(5px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.employee-info h4 {
    color: var(--internorm-gray);
    margin-bottom: var(--spacing-xs);
}

.employee-info p {
    color: #666;
    font-size: 0.9rem;
}

.employee-actions {
    display: flex;
    gap: var(--spacing-sm);
}

.connection-status {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
    margin-right: var(--spacing-sm);
}

.connection-status.connected {
    background: #d4edda;
    color: #155724;
}

.connection-status.disconnected {
    background: #f8d7da;
    color: #721c24;
}

.calendar-nav {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.month-display {
    color: var(--internorm-red);
    font-weight: 300;
    margin-left: auto;
}

.legend-bar {
    display: flex;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 0.9rem;
}

.legend-color {
    width: 20px;
    height: 20px;
    border-radius: var(--radius-sm);
}

.legend-locations,
.legend-employees {
    display: contents;
}

.employee-color-dot {
    display: inline-block;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    margin-right: 6px;
    vertical-align: middle;
    border: 1px solid rgba(0, 0, 0, 0.12);
}

.locations-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.location-item {
    padding: 16px;
    border: 1px solid #e8e8e8;
    border-radius: var(--radius-md);
    background: #fafafa;
}

.location-item-header {
    display: flex;
    align-items: center;
    gap: 10px;
}

.assignment.location-service {
    color: #fff;
    font-weight: 600;
}

.legend-color.fensterzone {
    background: #3498db;
}

.legend-color.schauraum {
    background: #9b59b6;
}

.legend-color.conflict {
    background: var(--danger-red);
}

.calendar-container {
    background: var(--internorm-white);
    border-radius: var(--radius-lg);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    padding: var(--spacing-lg);
    overflow-x: auto;
}

.calendar-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: var(--spacing-sm);
    min-width: 800px;
}

.calendar-day-header {
    text-align: center;
    font-weight: 700;
    color: var(--internorm-red);
    padding: var(--spacing-md);
    background: var(--internorm-light-gray);
    border-radius: var(--radius-md);
    text-transform: uppercase;
    font-size: 0.85rem;
    letter-spacing: 1px;
}

.calendar-day {
    min-height: 120px;
    background: var(--internorm-light-gray);
    border-radius: var(--radius-md);
    padding: var(--spacing-sm);
    cursor: pointer;
    transition: all 0.3s ease;
    border: 2px solid transparent;
    position: relative;
}

.calendar-day:hover {
    border-color: var(--internorm-red);
    transform: scale(1.02);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    z-index: 10;
}

.calendar-day.other-month {
    opacity: 0.4;
}

.calendar-day.today {
    background: var(--internorm-red);
    color: white;
}

.calendar-day.today .day-number {
    color: white;
}

.day-number {
    font-weight: 700;
    font-size: 1.1rem;
    margin-bottom: var(--spacing-xs);
    color: var(--internorm-gray);
}

.assignments {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.assignment {
    font-size: 0.75rem;
    padding: 4px 8px;
    border-radius: var(--radius-sm);
    color: white;
    display: flex;
    justify-content: space-between;
    align-items: center;
    animation: slideIn 0.3s ease;
    cursor: pointer;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(-10px);
    }

    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.assignment.fensterzone {
    background: #3498db;
}

.assignment.schauraum1210 {
    background: #9b59b6;
}

.assignment.urlaub {
    font-weight: 600;
}

.assignment.krank {
    background-color: var(--emp-color, #e74c3c);
    background-image: repeating-linear-gradient(
        -45deg,
        rgba(255, 255, 255, 0.28) 0,
        rgba(255, 255, 255, 0.28) 3px,
        transparent 3px,
        transparent 8px
    );
    font-weight: 600;
}

.assignment.frei {
    font-weight: 600;
}

.assignment.nicht_besetzt {
    background: #c0392b;
    color: #fff;
    font-weight: 600;
    border: 2px solid #a93226;
}

/* Legend Colors */
.legend-color.urlaub {
    background: #2ecc71;
}

.legend-color.krank {
    background-color: #e74c3c;
    background-image: repeating-linear-gradient(
        -45deg,
        rgba(255, 255, 255, 0.35) 0,
        rgba(255, 255, 255, 0.35) 2px,
        transparent 2px,
        transparent 6px
    );
}

.legend-color.frei {
    background: #95a5a6;
}

.assignment.conflict {
    background: var(--danger-red);
    animation: pulse 2s infinite;
}

@keyframes pulse {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.7;
    }
}

.assignment.other-assignment {
    font-style: italic;
    opacity: 0.95;
}

.assignment.other-assignment.krank {
    background-image: repeating-linear-gradient(
        -45deg,
        rgba(255, 255, 255, 0.35) 0,
        rgba(255, 255, 255, 0.35) 3px,
        transparent 3px,
        transparent 8px
    );
}

.assignment.other-assignment.conflict {
    border-color: var(--danger-red);
}

.assignment.other-assignment .remove-btn {
    color: #ccc;
}

.assignment .remove-btn {
    cursor: pointer;
    margin-left: 4px;
    font-weight: bold;
    opacity: 0.8;
}

.assignment .remove-btn:hover {
    opacity: 1;
}

.conflicts-container {
    display: grid;
    gap: var(--spacing-md);
}

.conflict-card {
    background: var(--internorm-white);
    border: 2px solid var(--danger-red);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    animation: slideIn 0.3s ease;
}

.conflict-info h4 {
    color: var(--danger-red);
    margin-bottom: var(--spacing-xs);
}

.conflict-info p {
    color: #666;
    font-size: 0.9rem;
}

.conflict-actions {
    display: flex;
    gap: var(--spacing-sm);
}

.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    justify-content: center;
    align-items: center;
    backdrop-filter: blur(5px);
}

.modal.active {
    display: flex;
}

.modal-content {
    background: var(--internorm-white);
    border-radius: var(--radius-lg);
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    animation: modalSlide 0.3s ease;
}

@keyframes modalSlide {
    from {
        opacity: 0;
        transform: translateY(-50px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg);
    border-bottom: 2px solid var(--internorm-light-gray);
    flex-shrink: 0;
}

.modal-header h3 {
    color: var(--internorm-gray);
    font-weight: 300;
}

.close-btn {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: #999;
    transition: color 0.3s;
}

.close-btn:hover {
    color: var(--internorm-red);
}

.modal-body {
    padding: var(--spacing-lg);
    overflow-y: auto;
    flex: 1 1 auto;
    min-height: 0;
}

.modal-date {
    color: var(--internorm-red);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    font-size: 1.1rem;
}

.modal-footer {
    padding: var(--spacing-md) var(--spacing-lg);
    border-top: 2px solid var(--internorm-light-gray);
    display: flex;
    justify-content: flex-end;
    flex-wrap: wrap;
    gap: 8px;
    flex-shrink: 0;
}

#assignment-modal .modal-footer .btn {
    flex: 1 1 calc(50% - 4px);
    min-width: 120px;
    max-width: 100%;
    padding: 8px 10px;
    font-size: 0.78rem;
    font-weight: 600;
    text-transform: none;
    letter-spacing: 0;
    line-height: 1.25;
    white-space: normal;
}

#assignment-modal .modal-footer .btn-secondary {
    flex: 1 1 100%;
}

@media (min-width: 420px) {
    #assignment-modal .modal-footer .btn-secondary {
        flex: 0 1 auto;
    }

    #assignment-modal .modal-footer .btn:not(.btn-secondary) {
        flex: 1 1 auto;
    }
}

.conflict-alert {
    background: #fff3cd;
    border: 2px solid var(--warning-orange);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    margin-top: var(--spacing-md);
    display: flex;
    gap: var(--spacing-md);
    animation: shake 0.5s;
}

@keyframes shake {

    0%,
    100% {
        transform: translateX(0);
    }

    25% {
        transform: translateX(-10px);
    }

    75% {
        transform: translateX(10px);
    }
}

.alert-icon {
    font-size: 1.5rem;
}

.alert-content {
    flex: 1;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-sm);
    cursor: pointer;
    font-weight: 600;
}

.settings-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-lg);
}

.button-group {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.tab-content {
    display: none;
    animation: fadeIn 0.3s ease;
}

.tab-content.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

.empty-state {
    text-align: center;
    padding: var(--spacing-xl);
    color: #666;
}

.empty-state-icon {
    font-size: 4rem;
    margin-bottom: var(--spacing-md);
    opacity: 0.3;
}

@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }

    .nav-container {
        flex-wrap: wrap;
        justify-content: center;
    }

    .nav-tab {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: 0.85rem;
    }

    .calendar-grid {
        grid-template-columns: repeat(7, 1fr);
        gap: 2px;
    }

    .calendar-day {
        min-height: 80px;
        padding: 4px;
    }

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

.grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

@media (max-width: 768px) {
    .grid-2 {
        grid-template-columns: 1fr;
    }
}

textarea {
    width: 100%;
    min-height: 100px;
    resize: vertical;
    padding: 10px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-family: inherit;
}

.badge {
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
    color: white;
}