:root {
    --bg-color: #0f172a;
    --sidebar-bg: #1e293b;
    --card-bg: #1e293b;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --accent-color: #6366f1;
    --accent-hover: #4f46e5;
    --danger-color: #ef4444;
    --success-color: #10b981;
    --border-color: #334155;
    --input-bg: #020617;

    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
}

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

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    justify-content: center;
}

.app-container {
    width: 100%;
    max-width: 1200px;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

/* Header */
.main-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--border-color);
    gap: 2rem;
    /* Add spacing between header sections */
}

.logo h1 {
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, #a5b4fc 0%, #6366f1 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    /* Standard property for compatibility */
    display: inline-block;
    margin-right: 0.5rem;
    /* Add space before badge */
}

.badge {
    font-size: 0.75rem;
    background: var(--accent-color);
    padding: 0.1rem 0.4rem;
    border-radius: 4px;
    margin-left: 0.5rem;
    vertical-align: middle;
}

.project-selector {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.select-wrapper {
    display: flex;
    gap: 0.5rem;
}

.user-actions {
    margin-left: auto;
}

select {
    background: var(--input-bg);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.5rem 1rem;
    border-radius: 6px;
    font-size: 0.9rem;
    outline: none;
    min-width: 200px;
}

button {
    cursor: pointer;
    font-family: inherit;
    border: none;
    transition: all 0.2s;
}

.btn-text {
    background: none;
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.btn-text:hover {
    color: var(--text-primary);
    text-decoration: underline;
}

#addProjectBtn {
    background: var(--accent-color);
    color: white;
    width: 32px;
    height: 32px;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}

#addProjectBtn:hover {
    background: var(--accent-hover);
}

/* Stats */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
}

.stat-card {
    background: var(--card-bg);
    padding: 1.5rem;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
}

.stat-card h3 {
    font-size: 0.85rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.5rem;
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
}

/* Toolbar */
.toolbar {
    display: flex;
    justify-content: space-between;
    align-items: end;
    margin-top: 1rem;
    margin-bottom: 1.5rem;
    /* Add space before table */
}

.subtitle {
    display: block;
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-top: 0.25rem;
}

.btn {
    padding: 0.6rem 1.2rem;
    border-radius: 6px;
    font-weight: 500;
    font-size: 0.9rem;
}

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

.btn-primary:hover {
    background: var(--accent-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

.btn-secondary {
    background: var(--card-bg);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    margin-right: 0.5rem;
}

.right {
    display: flex;
    gap: 0.5rem;
    /* Add spacing between buttons */
}

.btn-secondary:hover {
    background: var(--border-color);
}

/* Table */
.table-container {
    background: var(--card-bg);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

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

th,
td {
    padding: 1rem 1.5rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

th {
    background: rgba(255, 255, 255, 0.02);
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 0.85rem;
}

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

tr:hover {
    background: rgba(255, 255, 255, 0.01);
}

.status-badge {
    padding: 0.25rem 0.6rem;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 500;
}

.status-active {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success-color);
}

.status-disabled {
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger-color);
}

.key-mono {
    font-family: 'Courier New', monospace;
    letter-spacing: 0.5px;
    color: #cbd5e1;
    font-weight: 600;
}

.action-btn {
    padding: 0.3rem 0.6rem;
    font-size: 0.8rem;
    margin-right: 0.2rem;
    border-radius: 4px;
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
}

.action-btn:hover {
    background: rgba(255, 255, 255, 0.1);
}

.action-btn.delete:hover {
    background: rgba(239, 68, 68, 0.2);
    color: var(--danger-color);
}

.empty-state {
    padding: 4rem;
    text-align: center;
    color: var(--text-secondary);
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 100;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    align-items: center;
    justify-content: center;
}

.modal-content {
    background-color: var(--card-bg);
    padding: 2rem;
    border-radius: 12px;
    width: 90%;
    max-width: 500px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-lg);
    position: relative;
    transform: translateY(20px);
    opacity: 0;
    transition: all 0.3s ease;
}

.modal.show .modal-content {
    transform: translateY(0);
    opacity: 1;
}

.modal-content.large {
    max-width: 700px;
}

.close {
    position: absolute;
    right: 1.5rem;
    top: 1.5rem;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-secondary);
}

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

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

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

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border-radius: 6px;
    background: var(--input-bg);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--accent-color);
    outline: none;
}

.modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: 1rem;
    margin-top: 2rem;
}

/* Toast */
.toast {
    visibility: hidden;
    min-width: 250px;
    background-color: var(--accent-color);
    color: #fff;
    text-align: center;
    border-radius: 8px;
    padding: 1rem;
    position: fixed;
    z-index: 1;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    box-shadow: var(--shadow-lg);
    opacity: 0;
    transition: opacity 0.3s, bottom 0.3s;
}

.toast.show {
    visibility: visible;
    opacity: 1;
    bottom: 50px;
}

/* Bindings List */
.bindings-list {
    margin-top: 1rem;
    max-height: 300px;
    overflow-y: auto;
}

.binding-item {
    background: var(--input-bg);
    padding: 0.75rem;
    border-radius: 6px;
    border: 1px solid var(--border-color);
    margin-bottom: 0.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.binding-info {
    font-size: 0.9rem;
}

.binding-machine-id {
    font-family: monospace;
    color: var(--text-primary);
}

.binding-date {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-top: 0.2rem;
}

.binding-remarks {
    font-style: italic;
    color: var(--text-secondary);
    margin-left: 0.5rem;
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

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

/* Navigation Menu */
.nav-menu {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    transition: all 0.2s;
    font-size: 0.9rem;
    font-weight: 500;
}

.nav-link:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.05);
}

.nav-link.active {
    color: var(--text-primary);
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid var(--accent-color);
}

/* Mobile Responsive */
@media (max-width: 1024px) {
    .app-container {
        padding: 1.5rem;
    }

    .main-header {
        flex-wrap: wrap;
    }

    .project-selector {
        width: 100%;
        order: 3;
        margin-top: 1rem;
    }

    .stats-grid {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    }
}

@media (max-width: 768px) {

    /* Container */
    .app-container {
        padding: 1rem;
    }

    /* Header */
    .main-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
        padding-bottom: 1rem;
    }

    .logo {
        width: 100%;
        display: flex;
        justify-content: space-between;
        align-items: center;
    }

    .nav-menu {
        width: 100%;
        flex-wrap: wrap;
        gap: 0.5rem;
    }

    .nav-link {
        flex: 1;
        text-align: center;
        font-size: 0.85rem;
        padding: 0.4rem 0.8rem;
    }

    .project-selector {
        width: 100%;
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }

    .select-wrapper {
        width: 100%;
    }

    .select-wrapper select {
        flex: 1;
        min-width: 0;
    }

    .project-actions {
        display: flex;
        gap: 1rem;
    }

    .user-actions {
        width: 100%;
        margin-left: 0;
    }

    .user-actions button {
        width: 100%;
    }

    /* Stats */
    .stats-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .stat-card {
        padding: 1rem;
    }

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

    /* Toolbar */
    .toolbar {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }

    .toolbar .left h2 {
        font-size: 1.25rem;
    }

    .toolbar .right {
        width: 100%;
        justify-content: stretch;
    }

    .toolbar .right button {
        flex: 1;
    }

    /* Table - Convert to Cards on Mobile */
    .table-container {
        border: none;
        background: transparent;
        box-shadow: none;
    }

    table {
        display: none;
    }

    #keysTable tbody {
        display: block;
    }

    #keysTable tbody tr {
        display: block;
        background: var(--card-bg);
        border: 1px solid var(--border-color);
        border-radius: 8px;
        padding: 1rem;
        margin-bottom: 1rem;
    }

    #keysTable tbody td {
        display: block;
        padding: 0.5rem 0;
        border: none;
        text-align: left !important;
    }

    #keysTable tbody td:before {
        content: attr(data-label);
        font-weight: 600;
        color: var(--text-secondary);
        display: block;
        margin-bottom: 0.25rem;
        font-size: 0.85rem;
    }

    .actions-cell {
        display: flex;
        flex-wrap: wrap;
        gap: 0.5rem;
        margin-top: 0.5rem;
    }

    .action-btn {
        flex: 1;
        min-width: calc(50% - 0.25rem);
        text-align: center;
        padding: 0.5rem;
    }

    /* Modals */
    .modal-content {
        width: 95%;
        max-width: 95%;
        padding: 1.5rem;
        margin: 1rem;
    }

    .modal-content.large {
        max-width: 95%;
    }

    .close {
        right: 1rem;
        top: 1rem;
    }

    .modal-actions {
        flex-direction: column;
    }

    .modal-actions button {
        width: 100%;
    }

    /* Forms */
    .form-group input,
    .form-group textarea {
        font-size: 16px;
        /* Prevent zoom on iOS */
    }

    /* Bindings List */
    .binding-item {
        flex-direction: column;
        gap: 0.5rem;
    }

    .binding-item button {
        width: 100%;
    }
}

/* Small Mobile Phones */
@media (max-width: 480px) {
    .logo h1 {
        font-size: 1.25rem;
    }

    .badge {
        font-size: 0.65rem;
        padding: 0.1rem 0.3rem;
    }

    .toolbar .left h2 {
        font-size: 1.1rem;
    }

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

    .stat-card h3 {
        font-size: 0.75rem;
    }
}