/* Mining Theme Color Palette */
:root {
    --primary: #f59e0b;
    --primary-dark: #d97706;
    --primary-light: #fbbf24;
    --secondary: #fbbf24;
    --bg-dark: #1f2937;
    --bg-darker: #111827;
    --bg-card: #374151;
    --bg-card-hover: #4b5563;
    --text-light: #f3f4f6;
    --text-muted: #9ca3af;
    --text-dark: #1f2937;
    --success: #10b981;
    --success-dark: #059669;
    --danger: #ef4444;
    --danger-dark: #dc2626;
    --warning: #f59e0b;
    --info: #3b82f6;
    --border: #4b5563;
    --border-light: #6b7280;
}

/* Reset & Base */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--bg-darker);
    color: var(--text-light);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: color 0.2s;
}

a:hover {
    color: var(--primary-light);
}

/* Navbar */
.navbar {
    background-color: var(--bg-dark);
    padding: 0.75rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 2px solid var(--primary);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

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

.nav-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary);
}

.nav-links {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.nav-link {
    padding: 0.5rem 1rem;
    color: var(--text-light);
    border-radius: 0.375rem;
    transition: background-color 0.2s, color 0.2s;
}

.nav-link:hover {
    background-color: var(--bg-card);
    color: var(--primary);
}

.nav-link.active {
    background-color: var(--primary);
    color: var(--text-dark);
}

.nav-dropdown {
    position: relative;
}

.dropdown-content {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background-color: var(--bg-dark);
    border: 1px solid var(--border);
    border-radius: 0.375rem;
    min-width: 150px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
    z-index: 101;
}

.nav-dropdown:hover .dropdown-content {
    display: block;
}

.dropdown-content a {
    display: block;
    padding: 0.5rem 1rem;
    color: var(--text-light);
}

.dropdown-content a:hover {
    background-color: var(--bg-card);
    color: var(--primary);
}

.nav-user {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.user-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: 2px solid var(--primary);
}

.user-name {
    font-weight: 500;
}

/* Main Content */
.main-content {
    flex: 1;
    padding: 1.5rem;
    max-width: 1400px;
    margin: 0 auto;
    width: 100%;
}

/* Flash Messages */
.flash-messages {
    margin-bottom: 1rem;
}

.flash {
    padding: 0.75rem 1rem;
    border-radius: 0.375rem;
    margin-bottom: 0.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.flash-success {
    background-color: rgba(16, 185, 129, 0.2);
    border: 1px solid var(--success);
    color: var(--success);
}

.flash-error {
    background-color: rgba(239, 68, 68, 0.2);
    border: 1px solid var(--danger);
    color: var(--danger);
}

.flash-warning {
    background-color: rgba(245, 158, 11, 0.2);
    border: 1px solid var(--warning);
    color: var(--warning);
}

.flash-info {
    background-color: rgba(59, 130, 246, 0.2);
    border: 1px solid var(--info);
    color: var(--info);
}

.flash-close {
    background: none;
    border: none;
    color: inherit;
    font-size: 1.25rem;
    cursor: pointer;
    padding: 0 0.25rem;
}

/* Cards */
.card {
    background-color: var(--bg-card);
    border-radius: 0.5rem;
    padding: 1.25rem;
    margin-bottom: 1rem;
    border: 1px solid var(--border);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--border);
}

.card-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--primary);
}

.card-body {
    color: var(--text-light);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.625rem 1.25rem;
    border-radius: 0.375rem;
    font-weight: 500;
    cursor: pointer;
    border: none;
    transition: background-color 0.2s, transform 0.1s;
    text-decoration: none;
}

.btn:hover {
    transform: translateY(-1px);
}

.btn:active {
    transform: translateY(0);
}

.btn-primary {
    background-color: var(--primary);
    color: var(--text-dark);
}

.btn-primary:hover {
    background-color: var(--primary-dark);
    color: var(--text-dark);
}

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

.btn-success:hover {
    background-color: var(--success-dark);
    color: white;
}

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

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

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

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

.btn-sm {
    padding: 0.375rem 0.75rem;
    font-size: 0.875rem;
}

.btn-lg {
    padding: 0.875rem 1.75rem;
    font-size: 1.125rem;
}

.btn-block {
    width: 100%;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

/* Grid */
.grid {
    display: grid;
    gap: 1rem;
}

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

.grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

.grid-4 {
    grid-template-columns: repeat(4, 1fr);
}

@media (max-width: 768px) {
    .grid-2, .grid-3, .grid-4 {
        grid-template-columns: 1fr;
    }
}

/* Stats Cards */
.stat-card {
    background-color: var(--bg-card);
    border-radius: 0.5rem;
    padding: 1.25rem;
    border: 1px solid var(--border);
    text-align: center;
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary);
    line-height: 1.2;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-top: 0.25rem;
}

/* Status Badge */
.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.375rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.875rem;
    font-weight: 500;
}

.status-active {
    background-color: rgba(16, 185, 129, 0.2);
    color: var(--success);
}

.status-completed {
    background-color: rgba(59, 130, 246, 0.2);
    color: var(--info);
}

.status-cancelled {
    background-color: rgba(239, 68, 68, 0.2);
    color: var(--danger);
}

.status-auto_closed {
    background-color: rgba(245, 158, 11, 0.2);
    color: var(--warning);
}

/* Tables */
.table-container {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
}

th, td {
    padding: 0.75rem 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

th {
    background-color: var(--bg-darker);
    font-weight: 600;
    color: var(--primary);
}

tr:hover {
    background-color: var(--bg-card-hover);
}

/* Forms */
.form-group {
    margin-bottom: 1rem;
}

.form-label {
    display: block;
    margin-bottom: 0.375rem;
    font-weight: 500;
    color: var(--text-light);
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: 0.625rem 0.875rem;
    background-color: var(--bg-darker);
    border: 1px solid var(--border);
    border-radius: 0.375rem;
    color: var(--text-light);
    font-size: 1rem;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(245, 158, 11, 0.2);
}

.form-textarea {
    min-height: 100px;
    resize: vertical;
}

.form-inline {
    display: flex;
    gap: 0.5rem;
    align-items: flex-end;
}

.form-inline .form-group {
    margin-bottom: 0;
}

/* Clock Status */
.clock-status {
    text-align: center;
    padding: 2rem;
}

.clock-status-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
}

.clock-status-text {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.clock-duration {
    font-size: 3rem;
    font-weight: 700;
    color: var(--primary);
    font-variant-numeric: tabular-nums;
}

.clock-actions {
    margin-top: 1.5rem;
    display: flex;
    gap: 1rem;
    justify-content: center;
}

/* Shift History List */
.shift-list {
    list-style: none;
}

.shift-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem;
    border-bottom: 1px solid var(--border);
    transition: background-color 0.2s;
}

.shift-item:hover {
    background-color: var(--bg-card-hover);
}

.shift-item:last-child {
    border-bottom: none;
}

.shift-info {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.shift-date {
    font-weight: 500;
}

.shift-duration {
    color: var(--primary);
    font-weight: 600;
}

.shift-meta {
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin-top: 1.5rem;
}

.pagination a,
.pagination span {
    padding: 0.5rem 1rem;
    border-radius: 0.375rem;
    background-color: var(--bg-card);
    color: var(--text-light);
    border: 1px solid var(--border);
}

.pagination a:hover {
    background-color: var(--bg-card-hover);
    color: var(--primary);
}

.pagination .active {
    background-color: var(--primary);
    color: var(--text-dark);
    border-color: var(--primary);
}

.pagination .disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Leaderboard */
.leaderboard-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.75rem;
    border-bottom: 1px solid var(--border);
}

.leaderboard-item:last-child {
    border-bottom: none;
}

.leaderboard-rank {
    width: 2rem;
    height: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--primary);
    color: var(--text-dark);
    border-radius: 50%;
    font-weight: 700;
}

.leaderboard-rank.gold {
    background-color: #fbbf24;
}

.leaderboard-rank.silver {
    background-color: #9ca3af;
}

.leaderboard-rank.bronze {
    background-color: #b45309;
}

.leaderboard-info {
    flex: 1;
}

.leaderboard-user {
    font-weight: 500;
}

.leaderboard-stats {
    font-size: 0.875rem;
    color: var(--text-muted);
}

.leaderboard-time {
    font-weight: 600;
    color: var(--primary);
}

/* Login Page */
.login-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 80vh;
    text-align: center;
}

.login-logo {
    font-size: 5rem;
    margin-bottom: 1rem;
}

.login-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 0.5rem;
}

.login-subtitle {
    color: var(--text-muted);
    margin-bottom: 2rem;
}

.discord-btn {
    background-color: #5865F2;
    color: white;
    padding: 0.875rem 2rem;
    font-size: 1.125rem;
}

.discord-btn:hover {
    background-color: #4752c4;
    color: white;
}

/* Footer */
.footer {
    background-color: var(--bg-dark);
    padding: 1rem;
    text-align: center;
    color: var(--text-muted);
    border-top: 1px solid var(--border);
    margin-top: auto;
}

/* Detail List */
.detail-list {
    display: grid;
    gap: 0.75rem;
}

.detail-item {
    display: flex;
    justify-content: space-between;
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--border);
}

.detail-item:last-child {
    border-bottom: none;
}

.detail-label {
    color: var(--text-muted);
}

.detail-value {
    font-weight: 500;
    text-align: right;
}

/* Tags */
.tag {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.25rem 0.5rem;
    background-color: var(--bg-darker);
    border-radius: 0.25rem;
    font-size: 0.875rem;
    margin: 0.125rem;
}

.tag-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.25rem;
}

/* Modal */
.modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 200;
    display: none;
}

.modal-backdrop.active {
    display: flex;
}

.modal {
    background-color: var(--bg-card);
    border-radius: 0.5rem;
    padding: 1.5rem;
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.modal-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--primary);
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 1.5rem;
    cursor: pointer;
}

.modal-close:hover {
    color: var(--text-light);
}

.modal-footer {
    margin-top: 1.5rem;
    display: flex;
    gap: 0.75rem;
    justify-content: flex-end;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--text-muted);
}

.empty-state-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

.empty-state-text {
    font-size: 1.125rem;
}

/* Utility Classes */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-muted { color: var(--text-muted); }
.text-primary { color: var(--primary); }
.text-success { color: var(--success); }
.text-danger { color: var(--danger); }
.text-warning { color: var(--warning); }

.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; }
.flex-between { justify-content: space-between; }
.flex-center { align-items: center; }
.gap-1 { gap: 0.5rem; }
.gap-2 { gap: 1rem; }

/* Responsive */
@media (max-width: 768px) {
    .navbar {
        flex-wrap: wrap;
        gap: 0.75rem;
    }

    .nav-links {
        order: 3;
        width: 100%;
        justify-content: center;
    }

    .nav-user {
        order: 2;
    }

    .user-name {
        display: none;
    }

    .clock-duration {
        font-size: 2rem;
    }

    .stat-value {
        font-size: 1.5rem;
    }
}