:root {
    --bg-main: #f0fdf4;
    --card-bg: rgba(255, 255, 255, 0.7);
    --card-border: rgba(255, 255, 255, 0.5);
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --accent: #10b981;
    --accent-hover: #059669;
    --danger: #ef4444;
    --danger-hover: #dc2626;
    --success-bg: #d1fae5;
    --success-text: #065f46;
    --border-radius: 16px;
    --shadow: 0 10px 40px -10px rgba(0, 0, 0, 0.1);
    --glass-blur: blur(12px);
}

.dark-theme {
    --bg-main: #0f172a;
    --card-bg: rgba(30, 41, 59, 0.7);
    --card-border: rgba(255, 255, 255, 0.1);
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --accent: #10b981;
    --accent-hover: #34d399;
    --success-bg: rgba(16, 185, 129, 0.2);
    --success-text: #34d399;
    --shadow: 0 10px 40px -10px rgba(0, 0, 0, 0.5);
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-main);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: background-color 0.4s ease;
    overflow-x: hidden;
}

.background-elements {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -1;
    overflow: hidden;
}

.glow {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.5;
}

.glow-1 {
    top: -10%;
    right: -5%;
    width: 50vw;
    height: 50vw;
    background: radial-gradient(circle, rgba(16,185,129,0.3) 0%, rgba(16,185,129,0) 70%);
}

.glow-2 {
    bottom: -10%;
    left: -10%;
    width: 60vw;
    height: 60vw;
    background: radial-gradient(circle, rgba(59,130,246,0.2) 0%, rgba(59,130,246,0) 70%);
}

.container {
    width: 100%;
    max-width: 1200px;
    padding: 2rem;
    z-index: 1;
}

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 3rem;
}

.logo h1 {
    font-size: 1.8rem;
    font-weight: 700;
    letter-spacing: -0.5px;
    background: linear-gradient(135deg, var(--accent), #3b82f6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.badge {
    font-size: 0.8rem;
    background: var(--success-bg);
    color: var(--success-text);
    padding: 4px 10px;
    border-radius: 20px;
    font-weight: 600;
    margin-top: 4px;
    display: inline-block;
}

.btn-icon {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    color: var(--text-primary);
    width: 44px;
    height: 44px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    backdrop-filter: var(--glass-blur);
    transition: all 0.2s ease;
}

.btn-icon:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.dashboard-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

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

.card {
    background: var(--card-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--card-border);
    border-radius: var(--border-radius);
    padding: 2rem;
    box-shadow: var(--shadow);
    display: flex;
    flex-direction: column;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.card-header h2 {
    font-size: 1.25rem;
    font-weight: 600;
}

.status-indicator {
    font-size: 0.85rem;
    padding: 6px 12px;
    border-radius: 20px;
    font-weight: 500;
    background: rgba(100, 116, 139, 0.2);
}

.status-indicator.connected {
    background: var(--success-bg);
    color: var(--success-text);
}

.status-indicator.disconnected {
    background: rgba(239, 68, 68, 0.2);
    color: #ef4444;
}

.card-body {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.hidden {
    display: none !important;
}

.state-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    height: 100%;
    min-height: 200px;
}

.qr-container {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.qr-container img {
    border-radius: 12px;
    border: 4px solid #fff;
    box-shadow: 0 8px 24px rgba(0,0,0,0.12);
    margin-top: 1rem;
    width: 250px;
    height: 250px;
}

.instruction {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.icon-success {
    color: var(--accent);
    margin-bottom: 1rem;
}

.btn {
    padding: 12px 24px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.95rem;
    border: none;
    cursor: pointer;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

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

.btn-primary:hover {
    background: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.3);
}

.btn-secondary {
    background: rgba(100, 116, 139, 0.1);
    color: var(--text-primary);
}

.btn-secondary:hover {
    background: rgba(100, 116, 139, 0.2);
}

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

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

.mt-4 {
    margin-top: 1rem;
}

.description {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 2rem;
}

.action-buttons {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.action-btn {
    width: 100%;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid rgba(16, 185, 129, 0.2);
    border-left-color: var(--accent);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 1rem;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.feedback-msg {
    margin-top: 1.5rem;
    padding: 1rem;
    border-radius: 8px;
    background: var(--success-bg);
    color: var(--success-text);
    font-size: 0.9rem;
    text-align: center;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Table Styles */
.table-responsive {
    overflow-x: auto;
    width: 100%;
}

.orders-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 1rem;
    font-size: 0.9rem;
}

.orders-table th {
    text-align: left;
    padding: 12px;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--card-border);
    font-weight: 600;
}

.orders-table td {
    padding: 12px;
    border-bottom: 1px solid var(--card-border);
    vertical-align: middle;
}

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

.orders-table tbody tr:hover {
    background: rgba(100, 116, 139, 0.05);
}

.btn-sm {
    padding: 6px 12px;
    font-size: 0.85rem;
}