/**
 * Dashboard Pianki - Style v1.4
 * Czarno-biała kolorystyka
 */

:root {
    --bg-primary: #000000;
    --bg-secondary: #1a1a1a;
    --bg-tertiary: #2a2a2a;
    --text-primary: #ffffff;
    --text-secondary: #b0b0b0;
    --border-color: #404040;
    --hover-bg: #333333;
    --accent: #ffffff;
}

/* === BODY === */
body {
    background: linear-gradient(135deg, #0a0a0a 0%, #1a1a1a 100%);
    color: var(--text-primary);
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    min-height: 100vh;
}

/* === NAVBAR === */
.navbar {
    background: var(--bg-primary) !important;
    border-bottom: 1px solid var(--border-color);
    box-shadow: 0 2px 10px rgba(0,0,0,0.5);
}

.navbar-brand {
    font-weight: 600;
    letter-spacing: 0.5px;
}

/* === NAVIGATION SIDEBAR === */
.nav-sidebar {
    background: var(--bg-secondary);
    border-radius: 12px;
    padding: 1rem;
    box-shadow: 0 4px 15px rgba(0,0,0,0.3);
    position: sticky;
    top: 20px;
}

.nav-pills .nav-link {
    color: var(--text-secondary);
    border-radius: 8px;
    padding: 0.75rem 1rem;
    margin-bottom: 0.5rem;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.nav-pills .nav-link:hover {
    background: var(--hover-bg);
    color: var(--text-primary);
    transform: translateX(5px);
}

.nav-pills .nav-link.active {
    background: var(--accent);
    color: var(--bg-primary);
    font-weight: 600;
}

.nav-pills .nav-link i {
    font-size: 1.2rem;
}

/* === CARDS === */
.card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.3);
    transition: all 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(255,255,255,0.1);
}

.card-header {
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--border-color);
    color: var(--text-primary);
    font-weight: 600;
    padding: 1.25rem;
}

.card-body {
    padding: 1.5rem;
}

.card-footer {
    background: var(--bg-tertiary);
    border-top: 1px solid var(--border-color);
    padding: 1rem;
}

/* === BUTTONS === */
.btn {
    border-radius: 8px;
    padding: 0.5rem 1.25rem;
    font-weight: 500;
    transition: all 0.3s ease;
    border: none;
}

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

.btn-primary:hover {
    background: #e0e0e0;
    color: var(--bg-primary);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(255,255,255,0.3);
}

.btn-outline-primary {
    border: 1px solid var(--accent);
    color: var(--accent);
    background: transparent;
}

.btn-outline-primary:hover {
    background: var(--accent);
    color: var(--bg-primary);
}

.btn-success {
    background: #ffffff;
    color: #000000;
}

.btn-success:hover {
    background: #e8e8e8;
    color: #000000;
}

.btn-danger {
    background: #dc3545;
    border: none;
}

.btn-outline-danger {
    border: 1px solid #dc3545;
    color: #dc3545;
}

.btn-outline-danger:hover {
    background: #dc3545;
    color: white;
}

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

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

/* === TABLE === */
.table {
    color: var(--text-primary);
    border-color: var(--border-color);
}

.table thead th {
    background: var(--bg-tertiary);
    border-color: var(--border-color);
    color: var(--text-primary);
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.875rem;
    letter-spacing: 0.5px;
}

.table tbody tr {
    border-color: var(--border-color);
    transition: all 0.2s ease;
}

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

/* === FORMS === */
.form-control, .form-select {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    border-radius: 8px;
    padding: 0.75rem;
}

.form-control:focus, .form-select:focus {
    background: var(--bg-tertiary);
    border-color: var(--accent);
    color: var(--text-primary);
    box-shadow: 0 0 0 0.25rem rgba(255,255,255,0.1);
}

.form-label {
    color: var(--text-secondary);
    font-weight: 500;
    margin-bottom: 0.5rem;
}

/* === MODAL === */
.modal-content {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
}

.modal-header {
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--border-color);
    border-radius: 12px 12px 0 0;
}

.modal-footer {
    background: var(--bg-tertiary);
    border-top: 1px solid var(--border-color);
    border-radius: 0 0 12px 12px;
}

.modal-backdrop {
    background-color: #000;
}

.btn-close {
    filter: invert(1);
}

/* === DROPZONE === */
.dropzone {
    border: 2px dashed var(--border-color);
    border-radius: 12px;
    background: var(--bg-tertiary);
    padding: 2rem;
    min-height: 180px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    cursor: pointer;
}

.dropzone:hover {
    border-color: var(--accent);
    background: var(--hover-bg);
}

.dropzone .dz-message {
    color: var(--text-secondary);
    text-align: center;
    margin: 0;
}

.dropzone .dz-message i {
    font-size: 3rem;
    display: block;
    margin-bottom: 1rem;
    opacity: 0.5;
}

/* === IMAGE PREVIEW === */
.image-preview {
    position: relative;
    display: inline-block;
    margin: 0.5rem;
}

.image-preview img {
    width: 120px;
    height: 120px;
    object-fit: cover;
    border-radius: 8px;
    border: 2px solid var(--border-color);
    transition: all 0.3s ease;
}

.image-preview:hover img {
    border-color: var(--accent);
    transform: scale(1.05);
}

.image-preview .btn-remove {
    position: absolute;
    top: -8px;
    right: -8px;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #dc3545;
    border: 2px solid var(--bg-secondary);
}

/* === STATS === */
.stat-card {
    text-align: center;
    padding: 2rem 1rem;
}

.stat-card .display-4 {
    font-weight: 700;
    margin: 1rem 0;
}

.stat-card .card-title {
    font-size: 1rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* === SET CARDS === */
.set-card {
    height: 100%;
    transition: all 0.3s ease;
}

.set-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 35px rgba(255,255,255,0.15);
}

.set-card img {
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

/* === EMPTY STATE === */
.empty-state {
    text-align: center;
    padding: 4rem 2rem;
    color: var(--text-secondary);
}

.empty-state i {
    font-size: 4rem;
    margin-bottom: 1.5rem;
    opacity: 0.3;
}

/* === PAGE HEADER === */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.page-header h2 {
    margin: 0;
    font-weight: 700;
}

/* === ALERTS === */
.alert {
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.alert-success {
    background: rgba(40, 167, 69, 0.1);
    color: #4ade80;
    border-color: #4ade80;
}

.alert-danger {
    background: rgba(220, 53, 69, 0.1);
    color: #ef4444;
    border-color: #ef4444;
}

/* === SCROLLBAR === */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--accent);
}

/* === SPINNER === */
.spinner-border {
    border-color: var(--text-secondary);
    border-right-color: transparent;
}

/* === RESPONSIVE === */
@media (max-width: 768px) {
    .nav-sidebar {
        margin-bottom: 1.5rem;
        position: static;
    }
    
    .stat-card {
        padding: 1.5rem 1rem;
    }
    
    .image-preview img {
        width: 100px;
        height: 100px;
    }
    
    .page-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
}