/* Reset y Variables */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Colores */
    --color-primary: #2563eb;
    --color-success: #16a34a;
    --color-warning: #eab308;
    --color-error: #dc2626;
    --color-info: #0891b2;
    --color-bg-primary: #f9fafb;
    --color-bg-secondary: #ffffff;
    --color-bg-dark: #1f2937;
    --color-text-primary: #111827;
    --color-text-secondary: #6b7280;
    --color-text-muted: #9ca3af;
    --color-border: #e5e7eb;
    
    /* Tipografía */
    --font-xs: 14px;
    --font-sm: 16px;
    --font-base: 18px;
    --font-lg: 20px;
    --font-xl: 24px;
    --font-2xl: 32px;
    --font-3xl: 48px;
    --font-4xl: 64px;
    --font-weight: 96px;
    
    /* Espaciado */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-2xl: 48px;
    
    /* Sombras */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

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

/* Header */
.header {
    background: linear-gradient(135deg, var(--color-primary) 0%, #1e40af 100%);
    color: white;
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-lg);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1600px;
    margin: 0 auto;
}

.header-title {
    font-size: var(--font-2xl);
    font-weight: 700;
}

.header-status {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
}

.status-badge {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: 9999px;
    font-size: var(--font-sm);
    font-weight: 600;
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
}

.status-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

.status-connected .status-dot {
    background-color: var(--color-success);
}

.status-disconnected .status-dot {
    background-color: var(--color-error);
}

.status-connecting .status-dot {
    background-color: var(--color-warning);
}

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

.status-time {
    font-size: var(--font-sm);
    opacity: 0.9;
}

/* Main Container */
.main-container {
    display: flex;
    max-width: 1600px;
    margin: 0 auto;
    min-height: calc(100vh - 100px);
}

/* Sidebar */
.sidebar {
    width: 280px;
    background: var(--color-bg-secondary);
    border-right: 1px solid var(--color-border);
    padding: var(--spacing-lg);
}

.nav {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.nav-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: 12px;
    text-decoration: none;
    color: var(--color-text-secondary);
    font-size: var(--font-lg);
    font-weight: 500;
    transition: all 0.2s;
    cursor: pointer;
}

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

.nav-item.active {
    background: var(--color-primary);
    color: white;
}

.nav-icon {
    font-size: var(--font-xl);
}

/* Content */
.content {
    flex: 1;
    padding: var(--spacing-xl);
}

/* Page Container */
.page {
    animation: fadeIn 0.3s ease-in-out;
}

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

.page-title {
    font-size: var(--font-3xl);
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-xl);
}

/* Cards */
.card {
    background: var(--color-bg-secondary);
    border-radius: 16px;
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-md);
    margin-bottom: var(--spacing-lg);
}

.card-title {
    font-size: var(--font-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
    color: var(--color-text-primary);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    min-height: 60px;
    font-size: var(--font-lg);
    font-weight: 600;
    border-radius: 12px;
    border: none;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

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

.btn-primary:hover:not(:disabled) {
    background: #1d4ed8;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

.btn-success:hover:not(:disabled) {
    background: #15803d;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

.btn-danger:hover:not(:disabled) {
    background: #b91c1c;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

.btn-secondary:hover:not(:disabled) {
    background: #e5e7eb;
}

/* Weight Display */
.weight-display {
    text-align: center;
    padding: var(--spacing-2xl);
    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
    border-radius: 24px;
    margin: var(--spacing-xl) 0;
}

.weight-value {
    font-size: var(--font-weight);
    font-weight: 700;
    line-height: 1;
    color: var(--color-primary);
    margin: var(--spacing-md) 0;
    transition: all 0.3s;
}

.weight-stable {
    color: var(--color-success);
}

.weight-unit {
    font-size: var(--font-3xl);
    color: var(--color-text-secondary);
}

/* Stability Indicator */
.stability-indicator {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: 9999px;
    font-size: var(--font-xl);
    font-weight: 700;
    margin: var(--spacing-lg) 0;
}

.stability-stable {
    background: #dcfce7;
    color: var(--color-success);
}

.stability-unstable {
    background: #fef3c7;
    color: var(--color-warning);
}

.stability-waiting {
    background: var(--color-bg-primary);
    color: var(--color-text-muted);
}

/* Form Elements */
.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-label {
    display: block;
    font-size: var(--font-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-primary);
}

.form-input {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: var(--font-lg);
    border: 2px solid var(--color-border);
    border-radius: 12px;
    transition: all 0.2s;
}

.form-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-select {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: var(--font-lg);
    border: 2px solid var(--color-border);
    border-radius: 12px;
    background: white;
    cursor: pointer;
}

/* Table */
.table {
    width: 100%;
    border-collapse: collapse;
}

.table th,
.table td {
    padding: var(--spacing-md);
    text-align: left;
    border-bottom: 1px solid var(--color-border);
    font-size: var(--font-base);
}

.table th {
    font-weight: 600;
    color: var(--color-text-secondary);
    background: var(--color-bg-primary);
}

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

/* Toast */
.toast-container {
    position: fixed;
    top: 100px;
    right: var(--spacing-lg);
    z-index: 1000;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.toast {
    padding: var(--spacing-lg) var(--spacing-xl);
    border-radius: 12px;
    box-shadow: var(--shadow-xl);
    font-size: var(--font-lg);
    font-weight: 600;
    animation: slideIn 0.3s ease-out;
    min-width: 300px;
}

@keyframes slideIn {
    from { transform: translateX(400px); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

.toast-success {
    background: var(--color-success);
    color: white;
}

.toast-error {
    background: var(--color-error);
    color: white;
}

.toast-warning {
    background: var(--color-warning);
    color: white;
}

.toast-info {
    background: var(--color-info);
    color: white;
}

/* Loading */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

.loading-spinner {
    width: 60px;
    height: 60px;
    border: 6px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

.loading-text {
    color: white;
    font-size: var(--font-xl);
    font-weight: 600;
    margin-top: var(--spacing-lg);
}

/* Raw Data Viewer */
.raw-data-viewer {
    background: #1e293b;
    color: #94a3b8;
    padding: var(--spacing-lg);
    border-radius: 12px;
    font-family: 'Courier New', monospace;
    font-size: var(--font-sm);
    max-height: 400px;
    overflow-y: auto;
}

.raw-data-line {
    padding: 4px 0;
    border-bottom: 1px solid #334155;
}

.raw-data-timestamp {
    color: #60a5fa;
    margin-right: var(--spacing-md);
}

/* Device List */
.device-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.device-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg);
    background: var(--color-bg-primary);
    border-radius: 12px;
    border: 2px solid var(--color-border);
}

.device-item.connected {
    border-color: var(--color-success);
    background: #dcfce7;
}

.device-info {
    display: flex;
    flex-direction: column;
}

.device-path {
    font-size: var(--font-lg);
    font-weight: 600;
}

.device-manufacturer {
    font-size: var(--font-sm);
    color: var(--color-text-secondary);
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin: var(--spacing-xl) 0;
}

.stat-card {
    background: linear-gradient(135deg, var(--color-primary) 0%, #1e40af 100%);
    color: white;
    padding: var(--spacing-xl);
    border-radius: 16px;
    box-shadow: var(--shadow-lg);
}

.stat-label {
    font-size: var(--font-base);
    opacity: 0.9;
    margin-bottom: var(--spacing-sm);
}

.stat-value {
    font-size: var(--font-3xl);
    font-weight: 700;
}

/* Responsive */
@media (max-width: 1024px) {
    .main-container {
        flex-direction: column;
    }
    
    .sidebar {
        width: 100%;
        border-right: none;
        border-bottom: 1px solid var(--color-border);
    }
    
    .nav {
        flex-direction: row;
        overflow-x: auto;
    }
    
    .nav-text {
        display: none;
    }
}

/* Utility Classes */
.text-center { text-align: center; }
.text-right { text-align: right; }
.mt-lg { margin-top: var(--spacing-lg); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.hidden { display: none; }
.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.gap-md { gap: var(--spacing-md); }
.gap-lg { gap: var(--spacing-lg); }