/* IOT Dashboard Styles - Mobile First Responsive Design */

/* CSS Variables */
:root {
    --bg-primary: #0f0f0f;
    --bg-secondary: #1a1a1a;
    --bg-tertiary: #252525;
    --bg-card: #1e1e1e;
    --text-primary: #ffffff;
    --text-secondary: #a0a0a0;
    --text-muted: #666666;
    --border-color: #333333;
    --accent-primary: #3b82f6;
    --accent-hover: #2563eb;
    --status-green: #22c55e;
    --status-green-bg: rgba(34, 197, 94, 0.15);
    --status-amber: #f59e0b;
    --status-amber-bg: rgba(245, 158, 11, 0.15);
    --status-red: #ef4444;
    --status-red-bg: rgba(239, 68, 68, 0.15);
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4);
    --radius: 8px;
    --radius-lg: 12px;
    --transition: all 0.2s ease;
}

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

html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

/* Navbar */
.navbar {
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: 0.75rem 1rem;
    position: sticky;
    top: 0;
    z-index: 100;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 600;
    font-size: 1rem;
    color: var(--text-primary);
}

.nav-icon {
    width: 24px;
    height: 24px;
    color: var(--accent-primary);
}

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

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    padding: 0.5rem 0.75rem;
    border-radius: var(--radius);
    font-size: 0.875rem;
    transition: var(--transition);
}

.nav-link:hover,
.nav-link.active {
    color: var(--text-primary);
    background-color: var(--bg-tertiary);
}

.logout-btn {
    background-color: transparent;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 0.5rem;
    cursor: pointer;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    margin-left: 0.5rem;
}

.logout-btn:hover {
    background-color: var(--status-red-bg);
    border-color: var(--status-red);
    color: var(--status-red);
}

/* Container */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 1rem;
}

/* Dashboard Header */
.dashboard-header {
    margin-bottom: 1.5rem;
}

.dashboard-header h1 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.header-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75rem;
}

.stat-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 1rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.stat-value {
    font-size: 1.75rem;
    font-weight: 700;
    line-height: 1.2;
}

.stat-label {
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-top: 0.25rem;
}

.stat-total .stat-value { color: var(--accent-primary); }
.stat-green .stat-value { color: var(--status-green); }
.stat-amber .stat-value { color: var(--status-amber); }
.stat-red .stat-value { color: var(--status-red); }

/* Filters Section */
.filters-section {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

.search-box {
    position: relative;
    width: 100%;
}

.search-icon {
    position: absolute;
    left: 0.75rem;
    top: 50%;
    transform: translateY(-50%);
    width: 18px;
    height: 18px;
    color: var(--text-muted);
}

.search-box input {
    width: 100%;
    padding: 0.75rem 0.75rem 0.75rem 2.5rem;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    color: var(--text-primary);
    font-size: 0.875rem;
    outline: none;
    transition: var(--transition);
}

.search-box input:focus {
    border-color: var(--accent-primary);
}

.search-box input::placeholder {
    color: var(--text-muted);
}

.filter-buttons {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.filter-btn {
    display: flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.5rem 0.75rem;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    color: var(--text-secondary);
    font-size: 0.8125rem;
    cursor: pointer;
    transition: var(--transition);
}

.filter-btn:hover,
.filter-btn.active {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    border-color: var(--accent-primary);
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.status-dot.green { background-color: var(--status-green); }
.status-dot.amber { background-color: var(--status-amber); }
.status-dot.red { background-color: var(--status-red); }

/* Devices Grid */
.devices-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
}

/* Device Card */
.device-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1rem;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.device-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
}

.device-card.status-green::before { background-color: var(--status-green); }
.device-card.status-amber::before { background-color: var(--status-amber); }
.device-card.status-red::before { background-color: var(--status-red); }

.device-card:hover {
    border-color: var(--accent-primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.device-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 0.75rem;
}

.device-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
}

.device-card.status-green .device-icon { background-color: var(--status-green-bg); color: var(--status-green); }
.device-card.status-amber .device-icon { background-color: var(--status-amber-bg); color: var(--status-amber); }
.device-card.status-red .device-icon { background-color: var(--status-red-bg); color: var(--status-red); }

.device-icon svg {
    width: 24px;
    height: 24px;
}

.status-badge {
    font-size: 0.6875rem;
    font-weight: 500;
    padding: 0.25rem 0.5rem;
    border-radius: 9999px;
    text-transform: uppercase;
    letter-spacing: 0.025em;
}

.device-card.status-green .status-badge {
    background-color: var(--status-green-bg);
    color: var(--status-green);
}

.device-card.status-amber .status-badge {
    background-color: var(--status-amber-bg);
    color: var(--status-amber);
}

.device-card.status-red .status-badge {
    background-color: var(--status-red-bg);
    color: var(--status-red);
}

/* Days Indicator */
.days-indicator {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 0.5rem 0.75rem;
    border-radius: var(--radius);
    min-width: 70px;
    text-align: center;
}

.days-indicator.status-green {
    background-color: var(--status-green-bg);
    color: var(--status-green);
}

.days-indicator.status-amber {
    background-color: var(--status-amber-bg);
    color: var(--status-amber);
}

.days-indicator.status-red {
    background-color: var(--status-red-bg);
    color: var(--status-red);
}

.days-number {
    font-size: 1.5rem;
    font-weight: 700;
    line-height: 1;
}

.days-label {
    font-size: 0.625rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.025em;
    margin-top: 0.125rem;
    opacity: 0.9;
}

/* Inline days indicator for tables */
.days-indicator-inline {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    font-weight: 700;
    padding: 0.375rem 0.75rem;
    border-radius: var(--radius);
    min-width: 50px;
}

.days-indicator-inline.status-green {
    background-color: var(--status-green-bg);
    color: var(--status-green);
}

.days-indicator-inline.status-amber {
    background-color: var(--status-amber-bg);
    color: var(--status-amber);
}

.days-indicator-inline.status-red {
    background-color: var(--status-red-bg);
    color: var(--status-red);
}

.device-name {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.device-location {
    font-size: 0.8125rem;
    color: var(--text-secondary);
    margin-bottom: 0.75rem;
}

.device-meta {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.device-meta-item {
    display: flex;
    align-items: center;
    gap: 0.375rem;
}

.device-meta-item svg {
    width: 14px;
    height: 14px;
    flex-shrink: 0;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    z-index: 1000;
    overflow-y: auto;
    padding: 1rem;
}

.modal.active {
    display: flex;
    align-items: flex-start;
    justify-content: center;
}

.modal-content {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 600px;
    margin: 1rem auto;
    animation: modalSlideIn 0.2s ease;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

.modal-header h2 {
    font-size: 1.125rem;
    font-weight: 600;
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0;
    line-height: 1;
    transition: var(--transition);
}

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

.modal-body {
    padding: 1rem;
}

.modal-small {
    max-width: 400px;
}

/* Device Info in Modal */
.device-info {
    margin-bottom: 1.5rem;
}

.info-row {
    display: flex;
    justify-content: space-between;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border-color);
}

.info-label {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.info-value {
    font-size: 0.875rem;
    font-weight: 500;
    text-align: right;
}

/* Service History */
.service-history {
    max-height: 300px;
    overflow-y: auto;
}

.service-history h3 {
    font-size: 1rem;
    margin-bottom: 0.75rem;
}

.service-record {
    background-color: var(--bg-tertiary);
    border-radius: var(--radius);
    padding: 0.75rem;
    margin-bottom: 0.75rem;
}

.service-record-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 0.5rem;
    flex-wrap: wrap;
    gap: 0.25rem;
}

.service-tech {
    font-weight: 500;
    font-size: 0.875rem;
}

.service-date {
    color: var(--text-secondary);
    font-size: 0.75rem;
}

.service-details {
    font-size: 0.8125rem;
    color: var(--text-secondary);
}

.service-details p {
    margin-bottom: 0.25rem;
}

.no-records {
    text-align: center;
    color: var(--text-muted);
    padding: 1.5rem;
    font-size: 0.875rem;
}

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

.form-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 0.375rem;
    color: var(--text-primary);
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 0.75rem;
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    color: var(--text-primary);
    font-size: 0.9375rem;
    font-family: inherit;
    outline: none;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    border-color: var(--accent-primary);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-muted);
}

.form-group textarea {
    resize: vertical;
    min-height: 80px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
}

.form-actions {
    display: flex;
    gap: 0.75rem;
    margin-top: 1.5rem;
    flex-direction: column;
}

/* Buttons */
.btn-primary,
.btn-secondary,
.btn-danger {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1rem;
    border-radius: var(--radius);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    text-decoration: none;
}

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

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

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

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

.btn-danger {
    background-color: var(--status-red);
    color: var(--text-primary);
}

.btn-danger:hover {
    background-color: #dc2626;
}

.btn-primary svg,
.btn-secondary svg,
.btn-danger svg {
    width: 18px;
    height: 18px;
}

.submit-btn {
    width: 100%;
    padding: 1rem;
    background-color: var(--status-green);
    color: var(--text-primary);
    border: none;
    border-radius: var(--radius);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    transition: var(--transition);
}

.submit-btn:hover {
    background-color: #16a34a;
}

.submit-btn:disabled {
    background-color: var(--text-muted);
    cursor: not-allowed;
}

.submit-btn svg {
    width: 20px;
    height: 20px;
}

/* Service Form Page */
.service-container {
    max-width: 600px;
}

.service-form-wrapper {
    padding: 0;
}

.device-banner {
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.device-icon-large {
    width: 60px;
    height: 60px;
    background-color: var(--accent-primary);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.device-icon-large svg {
    width: 32px;
    height: 32px;
    color: var(--text-primary);
}

.device-details h1 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.device-details p {
    font-size: 0.8125rem;
    color: var(--text-secondary);
    margin: 0;
}

.service-form {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.25rem;
}

/* Messages */
.error-message,
.success-message {
    text-align: center;
    padding: 2rem 1rem;
    border-radius: var(--radius-lg);
}

.error-message {
    background-color: var(--status-red-bg);
    border: 1px solid var(--status-red);
    color: var(--status-red);
}

.error-message svg,
.success-message svg {
    width: 48px;
    height: 48px;
    margin-bottom: 0.75rem;
}

.success-message {
    background-color: var(--status-green-bg);
    border: 1px solid var(--status-green);
    color: var(--text-primary);
}

.success-message h2 {
    color: var(--status-green);
    margin-bottom: 0.5rem;
}

.success-message p {
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

/* Admin Page */
.admin-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
    gap: 1rem;
}

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

/* Devices Table - Mobile Card View */
.devices-table-wrapper {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.devices-table {
    display: none;
}

/* Mobile Card Layout for Admin */
.admin-device-cards {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
}

.admin-device-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1rem;
}

.admin-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 0.75rem;
}

.admin-card-title {
    font-weight: 600;
    font-size: 1rem;
}

.admin-card-body {
    font-size: 0.8125rem;
    color: var(--text-secondary);
    margin-bottom: 0.75rem;
}

.admin-card-body p {
    margin-bottom: 0.25rem;
}

.admin-card-actions {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.action-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.5rem 0.75rem;
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    color: var(--text-secondary);
    font-size: 0.75rem;
    cursor: pointer;
    transition: var(--transition);
}

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

.action-btn.delete:hover {
    background-color: var(--status-red-bg);
    border-color: var(--status-red);
    color: var(--status-red);
}

.action-btn svg {
    width: 14px;
    height: 14px;
}

/* QR Modal */
.qr-modal-content {
    max-width: 350px;
}

.qr-modal-body {
    text-align: center;
}

.qr-device-name {
    font-weight: 600;
    margin-bottom: 1rem;
}

.qr-code-container {
    background-color: white;
    padding: 1rem;
    border-radius: var(--radius);
    display: inline-block;
    margin-bottom: 1rem;
}

.qr-code-container canvas {
    display: block;
}

.qr-instruction {
    font-size: 0.8125rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

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

.empty-state svg {
    width: 64px;
    height: 64px;
    margin-bottom: 1rem;
    opacity: 0.5;
}

.empty-state h2 {
    font-size: 1.25rem;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.empty-state p {
    margin-bottom: 1.5rem;
}

/* Warning Text */
.warning-text {
    color: var(--status-amber);
    font-size: 0.8125rem;
    margin-top: 0.5rem;
}

/* Loading Overlay */
.loading-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(15, 15, 15, 0.9);
    z-index: 2000;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.loading-overlay.active {
    display: flex;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border-color);
    border-top-color: var(--accent-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.loading-overlay p {
    margin-top: 1rem;
    color: var(--text-secondary);
}

/* Live Update Indicator */
.live-indicator {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.live-dot {
    width: 8px;
    height: 8px;
    background-color: var(--status-green);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* Tablet Styles */
@media (min-width: 640px) {
    .navbar {
        padding: 1rem 1.5rem;
    }

    .nav-brand {
        font-size: 1.125rem;
    }

    .container {
        padding: 1.5rem;
    }

    .dashboard-header h1 {
        font-size: 1.75rem;
    }

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

    .filters-section {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
    }

    .search-box {
        max-width: 300px;
    }

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

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

    .form-actions {
        flex-direction: row;
        justify-content: flex-end;
    }

    .modal-content {
        margin: 2rem auto;
    }

    .device-banner {
        padding: 2rem;
    }

    .device-icon-large {
        width: 80px;
        height: 80px;
    }

    .device-icon-large svg {
        width: 40px;
        height: 40px;
    }

    .device-details h1 {
        font-size: 1.5rem;
    }

    .service-form {
        padding: 1.5rem;
    }
}

/* Desktop Styles */
@media (min-width: 1024px) {
    .devices-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .device-meta {
        flex-direction: row;
        flex-wrap: wrap;
    }

    /* Show table on desktop */
    .devices-table {
        display: table;
        width: 100%;
        border-collapse: collapse;
    }

    .devices-table th,
    .devices-table td {
        padding: 0.875rem 1rem;
        text-align: left;
        border-bottom: 1px solid var(--border-color);
    }

    .devices-table th {
        background-color: var(--bg-tertiary);
        font-weight: 600;
        font-size: 0.8125rem;
        color: var(--text-secondary);
        text-transform: uppercase;
        letter-spacing: 0.025em;
    }

    .devices-table td {
        font-size: 0.875rem;
    }

    .devices-table tbody tr {
        transition: var(--transition);
    }

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

    /* Hide mobile cards on desktop */
    .admin-device-cards {
        display: none;
    }
}

/* Large Desktop */
@media (min-width: 1280px) {
    .devices-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* Print Styles for QR Code */
@media print {
    body {
        background: white;
        color: black;
    }

    .qr-code-container {
        padding: 0;
    }
}