/* PPASys PWA Styles */

:root {
    --primary-color: #2563eb;
    --primary-dark: #1d4ed8;
    --secondary-color: #475569;
    --success-color: #16a34a;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --bg-color: #f8fafc;
    --card-bg: #ffffff;
    --text-primary: #0f172a;
    --text-secondary: #64748b;
    --border-color: #e2e8f0;
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    --radius: 12px;
    --radius-sm: 8px;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Loading Screen */
#loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #1e3a5f 0%, #0f172a 100%);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    transition: opacity 0.5s ease;
}

.loading-container {
    text-align: center;
    color: white;
}

.loading-container h1 {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
    letter-spacing: -0.02em;
}

.loading-container p {
    font-size: 1.1rem;
    opacity: 0.8;
    margin-bottom: 2rem;
}

.loading-spinner {
    width: 60px;
    height: 60px;
    border: 4px solid rgba(255, 255, 255, 0.2);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 2rem;
}

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

.loading-progress {
    width: 200px;
    height: 6px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 3px;
    overflow: hidden;
    margin: 1rem auto;
}

#loading-bar {
    width: 0%;
    height: 100%;
    background: white;
    border-radius: 3px;
    transition: width 0.3s ease;
}

/* Main App */
.hidden {
    display: none !important;
}

.app-header {
    background: var(--card-bg);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow);
}

.app-header h1 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.header-controls {
    display: flex;
    gap: 0.75rem;
}

/* Buttons */
.btn-primary, .btn-secondary, .btn-danger {
    padding: 0.625rem 1.25rem;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.2s ease;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

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

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

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

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

/* Panels */
.app-main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

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

.panel h2 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

/* Connection Panel */
.connection-status {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.status-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--danger-color);
    transition: background 0.3s ease;
}

.status-dot.online {
    background: var(--success-color);
    box-shadow: 0 0 8px rgba(22, 163, 74, 0.4);
}

.status-dot.offline {
    background: var(--danger-color);
}

.connection-controls {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

select, input[type="range"] {
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    background: white;
    min-width: 150px;
}

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

.data-card {
    background: linear-gradient(135deg, #1e3a5f 0%, #0f172a 100%);
    color: white;
    padding: 1.5rem;
    border-radius: var(--radius);
    text-align: center;
}

.data-card label {
    display: block;
    font-size: 0.875rem;
    opacity: 0.8;
    margin-bottom: 0.5rem;
}

.data-card .value {
    display: block;
    font-size: 2rem;
    font-weight: 800;
}

/* Chart */
#chart-canvas {
    width: 100%;
    height: 300px;
    background: var(--bg-color);
    border-radius: var(--radius-sm);
}

/* Calibration */
.calibration-controls {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    align-items: flex-end;
    margin-bottom: 1rem;
}

.angle-selector {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.angle-selector label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.data-table {
    overflow-x: auto;
}

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

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

.data-table th {
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* Data Actions */
.data-actions {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

/* Footer */
.app-footer {
    text-align: center;
    padding: 2rem;
    color: var(--text-secondary);
    font-size: 0.875rem;
    border-top: 1px solid var(--border-color);
    margin-top: auto;
}

/* Toast Notifications */
#toast-container {
    position: fixed;
    top: 1rem;
    right: 1rem;
    z-index: 1000;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.toast {
    padding: 1rem 1.5rem;
    border-radius: var(--radius-sm);
    color: white;
    font-weight: 500;
    animation: slideIn 0.3s ease;
    max-width: 300px;
    word-wrap: break-word;
}

.toast.success { background: var(--success-color); }
.toast.error { background: var(--danger-color); }
.toast.warning { background: var(--warning-color); }

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* Responsive */
@media (max-width: 768px) {
    .app-header {
        padding: 1rem;
        flex-direction: column;
        gap: 1rem;
    }

    .app-main {
        padding: 1rem;
    }

    .data-grid {
        grid-template-columns: 1fr;
    }

    .calibration-controls {
        flex-direction: column;
        align-items: stretch;
    }

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

    .btn-primary, .btn-secondary, .btn-danger {
        width: 100%;
        justify-content: center;
    }
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
    :root {
        --bg-color: #0f172a;
        --card-bg: #1e293b;
        --text-primary: #f1f5f9;
        --text-secondary: #94a3b8;
        --border-color: #334155;
    }
}

/* Print styles */
@media print {
    .app-header, .app-footer, .btn-primary, .btn-secondary, .btn-danger {
        display: none !important;
    }

    .panel {
        break-inside: avoid;
        box-shadow: none;
        border: 1px solid #ccc;
    }
}