/* Úkolníček BD - Main Stylesheet */

@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600;700;800&family=Fira+Code:wght@400;500;600&display=swap');

:root {
    --primary-blue: #0066CC;
    --deep-blue: #003D7A;
    --light-blue: #4DA3FF;
    --sky-blue: #E6F2FF;
    --accent-cyan: #00D4FF;
    --dark-bg: #001529;
    --text-dark: #1A1A2E;
    --text-light: #FFFFFF;
    --border-color: #D9E8F5;
    --success: #00B894;
    --warning: #FDCB6E;
    --danger: #D63031;
    --info: #74B9FF;
    --shadow-sm: 0 2px 8px rgba(0, 102, 204, 0.1);
    --shadow-md: 0 4px 16px rgba(0, 102, 204, 0.15);
    --shadow-lg: 0 8px 32px rgba(0, 102, 204, 0.2);
    --border-radius: 16px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: 'Poppins', sans-serif;
    background: linear-gradient(135deg, #001529 0%, #003D7A 50%, #0066CC 100%);
    min-height: 100vh;
    color: var(--text-dark);
    position: relative;
    overflow-x: hidden;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 30%, rgba(77, 163, 255, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(0, 212, 255, 0.15) 0%, transparent 50%),
        repeating-linear-gradient(0deg, transparent, transparent 2px, rgba(255, 255, 255, 0.03) 2px, rgba(255, 255, 255, 0.03) 4px);
    pointer-events: none;
    z-index: 0;
    animation: backgroundShift 20s ease infinite;
}

@keyframes backgroundShift {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.8; }
}

.container {
    position: relative;
    z-index: 1;
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem;
}

/* Buttons */
.btn {
    padding: 0.875rem 1.75rem;
    border: none;
    border-radius: 12px;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    font-family: 'Poppins', sans-serif;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
    white-space: nowrap;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-blue), var(--deep-blue));
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-success {
    background: linear-gradient(135deg, var(--success), #00A074);
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-success:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-danger {
    background: linear-gradient(135deg, var(--danger), #B71C1C);
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-danger:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: #95A5A6;
    color: white;
}

.btn-secondary:hover {
    background: #7F8C8D;
    transform: translateY(-2px);
}

.btn-icon {
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 8px;
    transition: var(--transition);
    font-size: 1.1rem;
}

.btn-icon:hover {
    transform: scale(1.1);
}

.btn-edit {
    color: var(--primary-blue);
}

.btn-edit:hover {
    background: var(--sky-blue);
}

.btn-delete {
    color: var(--danger);
}

.btn-delete:hover {
    background: #FFE5E5;
}

.btn-small {
    padding: 0.5rem 1rem;
    font-size: 0.85rem;
}

/* Forms */
.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-dark);
    font-size: 0.9rem;
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: 0.875rem 1rem;
    border: 2px solid var(--border-color);
    border-radius: 12px;
    font-size: 1rem;
    font-family: 'Poppins', sans-serif;
    transition: var(--transition);
    background: white;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 4px rgba(0, 102, 204, 0.1);
}

.form-textarea {
    min-height: 120px;
    resize: vertical;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

/* Cards */
.card {
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-md);
    border: 1px solid rgba(255, 255, 255, 0.3);
    animation: fadeInUp 0.5s ease;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--border-color);
}

.card-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--deep-blue);
}

/* Task Card */
.task-card {
    background: white;
    border: 2px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
    margin-bottom: 1rem;
    transition: var(--transition);
    position: relative;
    cursor: pointer;
}

.task-card:hover {
    border-color: var(--primary-blue);
    box-shadow: var(--shadow-sm);
    transform: translateX(4px);
}

.task-card-header {
    display: flex;
    justify-content: space-between;
    align-items: start;
    margin-bottom: 1rem;
}

.task-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 0.5rem;
}

.task-meta {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    font-size: 0.85rem;
    color: #666;
    margin-bottom: 1rem;
}

.task-description {
    color: #444;
    line-height: 1.6;
    margin-bottom: 1rem;
}

.task-actions {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.task-status-buttons {
    display: flex;
    gap: 0.75rem;
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

.status-btn {
    flex: 1;
    padding: 0.75rem;
    border: 2px solid;
    border-radius: 10px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-size: 0.9rem;
}

.status-btn-read {
    border-color: var(--info);
    color: var(--info);
    background: white;
}

.status-btn-read.active {
    background: var(--info);
    color: white;
}

.status-btn-complete {
    border-color: var(--success);
    color: var(--success);
    background: white;
}

.status-btn-complete.active {
    background: var(--success);
    color: white;
}

/* Badges */
.badge {
    display: inline-block;
    padding: 0.375rem 0.75rem;
    border-radius: 6px;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge-global {
    background: linear-gradient(135deg, var(--primary-blue), var(--deep-blue));
    color: white;
}

.badge-private {
    background: linear-gradient(135deg, #9B59B6, #8E44AD);
    color: white;
}

.badge-group {
    background: linear-gradient(135deg, #E67E22, #D35400);
    color: white;
}

.role-badge {
    padding: 0.35rem 0.75rem;
    border-radius: 6px;
    font-size: 0.8rem;
    font-weight: 600;
    display: inline-block;
    white-space: nowrap;
    min-width: auto;
    max-width: fit-content;
}

.role-system {
    background: linear-gradient(135deg, #1A1A2E, #16213E);
    color: white;
}

.role-admin {
    background: linear-gradient(135deg, #9B59B6, #8E44AD);
    color: white;
}

.role-moderator {
    background: linear-gradient(135deg, #3498DB, #2980B9);
    color: white;
}

.role-bd-plus {
    background: linear-gradient(135deg, #E67E22, #D35400);
    color: white;
}

.role-bd {
    background: linear-gradient(135deg, #27AE60, #229954);
    color: white;
}

.role-view {
    background: linear-gradient(135deg, #95A5A6, #7F8C8D);
    color: white;
}

/* Tabs */
.tabs {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    background: rgba(255, 255, 255, 0.98);
    padding: 1rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    overflow-x: auto;
}

.tab-btn {
    padding: 0.875rem 1.5rem;
    background: transparent;
    border: 2px solid transparent;
    border-radius: 10px;
    cursor: pointer;
    font-weight: 600;
    font-family: 'Poppins', sans-serif;
    font-size: 0.95rem;
    color: #666;
    transition: var(--transition);
    white-space: nowrap;
}

.tab-btn.active {
    background: linear-gradient(135deg, var(--primary-blue), var(--deep-blue));
    color: white;
    box-shadow: var(--shadow-sm);
}

.tab-btn:hover:not(.active) {
    background: var(--sky-blue);
    color: var(--primary-blue);
}

/* Table */
.data-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 1.5rem;
}

.data-table th {
    background: var(--deep-blue);
    color: white;
    padding: 1rem;
    text-align: left;
    font-weight: 600;
    border-bottom: 3px solid var(--primary-blue);
}

.data-table td {
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.data-table tr:hover {
    background: var(--sky-blue);
}

.data-table tr:last-child td {
    border-bottom: none;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(5px);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    animation: fadeIn 0.3s ease;
}

.modal.show {
    display: flex;
}

.modal-content {
    background: white;
    padding: 2rem;
    border-radius: var(--border-radius);
    max-width: 600px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
    animation: slideUp 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideUp {
    from {
        transform: translateY(30px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--border-color);
}

.modal-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--deep-blue);
}

.btn-close {
    background: none;
    border: none;
    font-size: 1.75rem;
    cursor: pointer;
    color: #666;
    padding: 0.5rem;
    line-height: 1;
    transition: var(--transition);
}

.btn-close:hover {
    color: var(--danger);
    transform: rotate(90deg);
}

.modal-footer {
    display: flex;
    gap: 1rem;
    margin-top: 1.5rem;
    padding-top: 1rem;
    border-top: 2px solid var(--border-color);
}

/* Alerts */
.alert {
    padding: 1rem 1.25rem;
    border-radius: 10px;
    margin-bottom: 1.5rem;
    font-size: 0.95rem;
    border-left: 4px solid;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.alert-success {
    background: #D4EDDA;
    color: #155724;
    border-color: var(--success);
}

.alert-error {
    background: #F8D7DA;
    color: #721C24;
    border-color: var(--danger);
}

.alert-warning {
    background: #FFF3CD;
    color: #856404;
    border-color: var(--warning);
}

.alert-info {
    background: #D1ECF1;
    color: #0C5460;
    border-color: var(--info);
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 4rem 2rem;
    color: #666;
}

.empty-state-icon {
    font-size: 5rem;
    margin-bottom: 1.5rem;
    opacity: 0.2;
    filter: grayscale(100%);
}

.empty-state p {
    font-size: 1.1rem;
    color: #999;
    margin: 0;
}

/* Filter Bar */
.filter-bar {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
    align-items: center;
}

.filter-btn {
    padding: 0.625rem 1.25rem;
    background: white;
    border: 2px solid var(--border-color);
    border-radius: 10px;
    cursor: pointer;
    font-weight: 600;
    font-family: 'Poppins', sans-serif;
    font-size: 0.9rem;
    color: #666;
    transition: var(--transition);
}

.filter-btn.active {
    background: var(--primary-blue);
    color: white;
    border-color: var(--primary-blue);
}

.filter-btn:hover:not(.active) {
    background: var(--sky-blue);
    border-color: var(--primary-blue);
    color: var(--primary-blue);
}

/* Permission Grid */
.permission-category {
    margin-bottom: 2rem;
}

.permission-category-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--deep-blue);
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--border-color);
}

.permission-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    background: var(--sky-blue);
    border-radius: 8px;
    margin-bottom: 0.5rem;
    transition: var(--transition);
}

.permission-item:hover {
    background: #D6E9FF;
}

.permission-info {
    flex: 1;
}

.permission-name {
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 0.25rem;
}

.permission-desc {
    font-size: 0.85rem;
    color: #666;
}

.permission-toggle {
    width: 24px;
    height: 24px;
    border-radius: 6px;
    border: 2px solid var(--border-color);
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
}

.permission-toggle.enabled {
    background: var(--success);
    border-color: var(--success);
    color: white;
}

.permission-toggle.disabled {
    background: var(--danger);
    border-color: var(--danger);
    color: white;
}

/* Loading Spinner */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Responsive */
@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }

    .tabs {
        flex-direction: column;
    }

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

    .task-card-header {
        flex-direction: column;
    }

    .task-actions {
        margin-top: 1rem;
        width: 100%;
    }

    .modal-content {
        padding: 1.5rem;
    }

    .filter-bar {
        flex-direction: column;
        align-items: stretch;
    }

    .filter-btn {
        width: 100%;
    }
}

/* Utilities */
.hidden {
    display: none !important;
}

.text-center {
    text-align: center;
}

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }

.flex {
    display: flex;
}

.items-center {
    align-items: center;
}

.justify-between {
    justify-content: space-between;
}

.gap-1 { gap: 0.5rem; }
.gap-2 { gap: 1rem; }
.gap-3 { gap: 1.5rem; }