:root {
    --bg-primary: #0f1419;
    --bg-secondary: #1a1f2e;
    --text-primary: #ffffff;
    --text-secondary: #a0a0a0;
    --border-color: #2a2f3e;
    --accent-blue: #3b82f6;
    --accent-green: #10b981;
    --accent-red: #ef4444;
    --accent-yellow: #f59e0b;
    --accent-purple: #8b5cf6;
    --accent-orange: #f97316;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
}

/* Header */
.header {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: 15px 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 15px;
}

.logo-container {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo {
    width: 40px;
    height: 40px;
    border-radius: 50%;
}

.header h1 {
    font-size: 1.5rem;
    font-weight: 600;
}

.nav-tabs {
    display: flex;
    gap: 30px;
    margin-top: 15px;
    padding: 0 30px;
    border-bottom: 1px solid var(--border-color);
}

.nav-tab {
    padding: 12px 0;
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 0.95rem;
    cursor: pointer;
    border-bottom: 2px solid transparent;
    transition: all 0.2s;
}

.nav-tab.active {
    color: var(--accent-blue);
    border-bottom-color: var(--accent-blue);
}

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

/* Container */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 30px;
}

/* Stats Cards */
.stats-container {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 20px;
}

.stat-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 15px;
}

.stat-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 5px;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.stat-link {
    margin-top: 15px;
    color: var(--accent-blue);
    text-decoration: none;
    font-size: 0.85rem;
}

/* Device Table */
.device-table-container {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
}

.table-controls {
    padding: 15px 20px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 15px;
}

.table-controls-left {
    display: flex;
    gap: 10px;
    align-items: center;
}

.table-controls-right {
    display: flex;
    gap: 10px;
    align-items: center;
}

.btn {
    padding: 8px 16px;
    border: none;
    border-radius: 6px;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.2s;
    font-weight: 500;
}

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

.btn-primary:hover {
    background: #2563eb;
}

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

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

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

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

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

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

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

select, input[type="text"], input[type="search"] {
    padding: 8px 12px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-primary);
    font-size: 0.9rem;
}

select:focus, input:focus {
    outline: none;
    border-color: var(--accent-blue);
}

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

.device-table th {
    background: var(--bg-primary);
    padding: 12px 15px;
    text-align: left;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border-color);
}

.device-table td {
    padding: 12px 15px;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.9rem;
}

.device-table tr:hover {
    background: rgba(59, 130, 246, 0.05);
}

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

.status-badge {
    display: inline-block;
    padding: 4px 10px;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
}

.status-online {
    background: rgba(16, 185, 129, 0.2);
    color: var(--accent-green);
}

.status-offline {
    background: rgba(239, 68, 68, 0.2);
    color: var(--accent-red);
}

.pin-badge {
    display: inline-block;
    padding: 4px 10px;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
}

.pin-available {
    background: rgba(16, 185, 129, 0.2);
    color: var(--accent-green);
}

.pin-none {
    background: rgba(239, 68, 68, 0.2);
    color: var(--accent-red);
}

.battery-low {
    color: var(--accent-red);
    font-weight: 600;
}

.action-buttons {
    display: flex;
    gap: 8px;
}

.action-btn {
    padding: 6px 12px;
    border: none;
    border-radius: 4px;
    font-size: 0.8rem;
    cursor: pointer;
    transition: all 0.2s;
}

/* Device Details Page */
.device-header-section {
    text-align: center;
    padding: 30px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    margin-bottom: 20px;
}

.device-icon {
    font-size: 4rem;
    margin-bottom: 15px;
}

.device-name {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 10px;
}

.device-status-btn {
    padding: 6px 16px;
    border-radius: 20px;
    border: none;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 10px;
}

.device-android {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.device-tabs {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-top: 20px;
}

.device-tab {
    padding: 10px 20px;
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    border-bottom: 2px solid transparent;
    transition: all 0.2s;
}

.device-tab.active {
    color: var(--accent-blue);
    border-bottom-color: var(--accent-blue);
}

.metrics-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-bottom: 20px;
}

.metric-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 20px;
    text-align: center;
}

.metric-icon {
    font-size: 2rem;
    margin-bottom: 10px;
}

.metric-value {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 5px;
}

.metric-label {
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.details-panels {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.detail-panel {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 20px;
}

.panel-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--border-color);
}

.panel-header h3 {
    font-size: 1.1rem;
    font-weight: 600;
}

.info-row {
    display: flex;
    justify-content: space-between;
    padding: 10px 0;
    border-bottom: 1px solid var(--border-color);
}

.info-row:last-child {
    border-bottom: none;
}

.info-label {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.info-value {
    font-weight: 500;
}

/* Messages Page */
.messages-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding: 20px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
}

.messages-controls {
    display: flex;
    gap: 10px;
    align-items: center;
}

.messages-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
}

.messages-table th {
    background: var(--bg-primary);
    padding: 12px 15px;
    text-align: left;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border-color);
}

.messages-table td {
    padding: 12px 15px;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.9rem;
}

.messages-table tr:hover {
    background: rgba(59, 130, 246, 0.05);
}

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

.message-body {
    max-width: 500px;
    word-wrap: break-word;
}

.copy-btn {
    padding: 4px 8px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    color: var(--text-primary);
    cursor: pointer;
    font-size: 0.8rem;
}

.copy-btn:hover {
    background: var(--bg-secondary);
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal.show {
    display: flex;
}

.modal-content {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
}

.modal-header {
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    font-size: 1.2rem;
    font-weight: 600;
}

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

.modal-body {
    padding: 20px;
}

.form-group {
    margin-bottom: 15px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 10px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-primary);
    font-size: 0.9rem;
}

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

.paste-icon-btn {
    transition: all 0.2s ease;
    border-radius: 4px;
}

.paste-icon-btn:hover {
    background: var(--bg-secondary) !important;
    color: var(--accent-blue) !important;
    transform: scale(1.1);
}

.paste-icon-btn:active {
    transform: scale(0.95);
}

.form-actions {
    display: flex;
    gap: 10px;
    justify-content: flex-end;
    margin-top: 20px;
}

/* Three Dots Menu */
.three-dots-menu {
    position: relative;
}

.three-dots-btn {
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.2rem;
    cursor: pointer;
    padding: 5px 10px;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 5px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    min-width: 200px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    z-index: 10000;
    display: none;
}

.dropdown-menu.show {
    display: block;
}

.dropdown-item {
    display: block;
    padding: 12px 20px;
    color: var(--text-primary);
    text-decoration: none;
    transition: background 0.2s;
    border-bottom: 1px solid var(--border-color);
}

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

.dropdown-item:hover {
    background: var(--bg-primary);
}

/* Login Page */
.login-page {
    background-image: url('../img/bg.jpg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    background-attachment: fixed;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.login-container {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 40px;
    width: 100%;
    max-width: 450px;
}

.login-header {
    text-align: center;
    margin-bottom: 30px;
}

.logo-container {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    margin-bottom: 20px;
}

.logo {
    width: 50px;
    height: 50px;
    border-radius: 50%;
}

.login-header h1 {
    font-size: 1.8rem;
    margin-bottom: 10px;
}

.contact-developer-btn {
    display: inline-block;
    margin-top: 15px;
    padding: 8px 16px;
    background: var(--accent-blue);
    color: white;
    text-decoration: none;
    border-radius: 6px;
    font-size: 0.9rem;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.form-group input {
    width: 100%;
    padding: 12px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-primary);
    font-size: 1rem;
}

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

.btn-submit {
    width: 100%;
    padding: 12px;
    background: var(--accent-blue);
    color: white;
    border: none;
    border-radius: 6px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s;
}

.btn-submit:hover {
    background: #2563eb;
}

.timer {
    text-align: center;
    color: var(--accent-yellow);
    margin: 15px 0;
    font-size: 0.9rem;
}

.hidden {
    display: none !important;
}

/* Toggle Switch */
.toggle-switch {
    position: relative;
    display: inline-block;
    width: 50px;
    height: 24px;
}

.toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    transition: 0.3s;
    border-radius: 24px;
}

.toggle-slider:before {
    position: absolute;
    content: "";
    height: 18px;
    width: 18px;
    left: 2px;
    bottom: 2px;
    background-color: var(--text-secondary);
    transition: 0.3s;
    border-radius: 50%;
}

.toggle-switch input:checked + .toggle-slider {
    background-color: var(--accent-green);
    border-color: var(--accent-green);
}

.toggle-switch input:checked + .toggle-slider:before {
    transform: translateX(26px);
    background-color: white;
}

/* Instructions Modal */
.instructions-list {
    list-style: none;
    padding: 0;
    margin: 20px 0;
    counter-reset: step-counter;
}

.instructions-list li {
    counter-increment: step-counter;
    padding: 12px;
    margin-bottom: 10px;
    background: var(--bg-primary);
    border-left: 3px solid var(--accent-blue);
    border-radius: 4px;
    position: relative;
    padding-left: 50px;
}

.instructions-list li::before {
    content: counter(step-counter);
    position: absolute;
    left: 12px;
    top: 12px;
    background: var(--accent-blue);
    color: white;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    font-weight: 600;
}

.instructions-list li strong {
    color: var(--accent-blue);
}

.code-block {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 12px;
    margin: 10px 0;
    font-family: 'Courier New', monospace;
    font-size: 0.85rem;
    color: var(--accent-green);
    word-break: break-all;
    overflow-x: auto;
}

.copy-btn {
    background: var(--accent-blue);
    color: white;
    border: none;
    padding: 6px 12px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.85rem;
    margin-left: 10px;
    transition: background 0.2s;
}

.copy-btn:hover {
    background: #2563eb;
}

/* Responsive */
@media (max-width: 768px) {
    .stats-container {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .details-panels {
        grid-template-columns: 1fr;
    }
    
    .metrics-cards {
        grid-template-columns: 1fr;
    }
    
    .device-table {
        font-size: 0.8rem;
    }
    
    .device-table th,
    .device-table td {
        padding: 8px;
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.8;
        transform: scale(1.02);
    }
}