/* Base styles and variables */
:root {
    --primary-dark: #05386B;
    --primary: #379683;
    --primary-light: #5CDB95;
    --secondary-light: #8EE4AF;
    --background: #EDF5E1;
    
    --text-dark: #05386B;
    --text-light: #EDF5E1;
    
    --neon-glow: 0 0 5px rgba(92, 219, 149, 0.5), 0 0 10px rgba(92, 219, 149, 0.3);
    --card-shadow: 0 4px 8px rgba(5, 56, 107, 0.2);
    
    --transition-speed: 0.3s;
    --border-radius: 8px;
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
}

/* Dark theme variables */
.dark-theme {
    --primary-dark: #0B0C10;
    --primary: #1F2833;
    --primary-light: #45A29E;
    --secondary-light: #66FCF1;
    --background: #0B0C10;
    
    --text-dark: #C5C6C7;
    --text-light: #FFFFFF;
    
    --neon-glow: 0 0 5px rgba(102, 252, 241, 0.5), 0 0 10px rgba(102, 252, 241, 0.3);
    --card-shadow: 0 4px 8px rgba(0, 0, 0, 0.5);
}

/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--background);
    color: var(--text-dark);
    line-height: 1.6;
    transition: background-color var(--transition-speed), color var(--transition-speed);
}

.app-container {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-md);
}

/* Header styles */
.app-header {
    background-color: var(--primary-dark);
    color: var(--text-light);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-lg);
    box-shadow: var(--card-shadow);
}

.app-header h1 {
    text-align: center;
    margin-bottom: var(--spacing-md);
    font-weight: 700;
    letter-spacing: 1px;
    text-shadow: var(--neon-glow);
}

.main-nav {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.nav-btn {
    background-color: transparent;
    color: var(--text-light);
    border: 2px solid var(--secondary-light);
    border-radius: var(--border-radius);
    padding: var(--spacing-sm) var(--spacing-md);
    cursor: pointer;
    transition: all var(--transition-speed);
    font-weight: 500;
}

.nav-btn:hover, .nav-btn.active {
    background-color: var(--primary-light);
    color: var(--primary-dark);
    box-shadow: var(--neon-glow);
}

.nav-btn i {
    margin-right: var(--spacing-xs);
}

/* Main content styles */
.app-content {
    flex: 1;
    position: relative;
}

.screen {
    display: none;
    opacity: 0;
    transition: opacity var(--transition-speed);
}

.screen.active {
    display: block;
    opacity: 1;
}

/* Dashboard screen styles */
.dashboard-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.tracking-status {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background-color: var(--primary);
    border-radius: var(--border-radius);
    box-shadow: var(--card-shadow);
}

.status-indicator {
    font-size: 1.2rem;
    color: var(--text-light);
    background-color: var(--primary-dark);
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-sm);
}

.status-indicator.active {
    background-color: var(--primary-light);
    color: var(--primary-dark);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(92, 219, 149, 0.7);
    }
    70% {
        box-shadow: 0 0 0 10px rgba(92, 219, 149, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(92, 219, 149, 0);
    }
}

.action-btn {
    padding: var(--spacing-md) var(--spacing-xl);
    border: none;
    border-radius: var(--border-radius);
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-speed);
    width: 100%;
    max-width: 300px;
}

.start-btn {
    background-color: var(--primary-light);
    color: var(--primary-dark);
}

.start-btn:hover {
    background-color: var(--secondary-light);
    box-shadow: var(--neon-glow);
}

.stop-btn {
    background-color: #e74c3c;
    color: white;
}

.stop-btn:hover {
    background-color: #c0392b;
    box-shadow: 0 0 5px rgba(231, 76, 60, 0.5), 0 0 10px rgba(231, 76, 60, 0.3);
}

.hidden {
    display: none;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
}

.stat-card {
    background-color: var(--primary);
    color: var(--text-light);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    text-align: center;
    box-shadow: var(--card-shadow);
    transition: transform var(--transition-speed);
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--neon-glow);
}

.stat-icon {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    font-size: 0.9rem;
    opacity: 0.8;
}

.daily-goal {
    background-color: var(--primary);
    color: var(--text-light);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    box-shadow: var(--card-shadow);
}

.daily-goal h3 {
    margin-bottom: var(--spacing-md);
}

.progress-container {
    background-color: var(--primary-dark);
    height: 20px;
    border-radius: 10px;
    overflow: hidden;
    margin-bottom: var(--spacing-sm);
}

.progress-bar {
    height: 100%;
    background-color: var(--primary-light);
    width: 0%;
    transition: width 0.5s ease-in-out;
}

.progress-text {
    text-align: right;
    font-size: 0.9rem;
}

.today-summary {
    background-color: var(--primary);
    color: var(--text-light);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    box-shadow: var(--card-shadow);
}

.today-summary h3 {
    margin-bottom: var(--spacing-md);
}

.summary-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-md);
}

.summary-item {
    text-align: center;
}

.summary-label {
    font-size: 0.9rem;
    opacity: 0.8;
    margin-bottom: var(--spacing-xs);
}

.summary-value {
    font-size: 1.3rem;
    font-weight: 600;
}

/* History screen styles */
.history-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.history-container h2 {
    color: var(--text-dark);
    text-align: center;
    margin-bottom: var(--spacing-md);
}

.history-actions {
    display: flex;
    justify-content: flex-end;
    margin-bottom: var(--spacing-md);
}

.secondary-btn {
    background-color: var(--primary);
    color: var(--text-light);
    border: none;
    border-radius: var(--border-radius);
    padding: var(--spacing-sm) var(--spacing-md);
    cursor: pointer;
    transition: all var(--transition-speed);
}

.secondary-btn:hover {
    background-color: var(--primary-dark);
    box-shadow: var(--neon-glow);
}

.history-stats {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
}

@media (min-width: 768px) {
    .history-stats {
        grid-template-columns: 1fr 2fr;
    }
}

.weekly-summary {
    background-color: var(--primary);
    color: var(--text-light);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    box-shadow: var(--card-shadow);
}

.weekly-summary h3 {
    margin-bottom: var(--spacing-md);
}

.weekly-stats {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.weekly-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.weekly-label {
    font-size: 0.9rem;
}

.weekly-value {
    font-size: 1.2rem;
    font-weight: 600;
}

.weekly-chart-container {
    background-color: var(--primary);
    color: var(--text-light);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    box-shadow: var(--card-shadow);
    height: 100%;
    min-height: 250px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.history-list-container {
    background-color: var(--primary);
    color: var(--text-light);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    box-shadow: var(--card-shadow);
}

.history-list-container h3 {
    margin-bottom: var(--spacing-md);
}

.history-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    max-height: 400px;
    overflow-y: auto;
}

.history-item {
    background-color: var(--primary-dark);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

@media (min-width: 768px) {
    .history-item {
        grid-template-columns: 1fr 1fr 1fr 1fr;
    }
}

.history-date {
    font-weight: 600;
}

.history-detail {
    display: flex;
    flex-direction: column;
}

.detail-label {
    font-size: 0.8rem;
    opacity: 0.7;
}

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

.empty-history {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xl);
    text-align: center;
    color: var(--text-light);
    opacity: 0.7;
}

.empty-history i {
    margin-bottom: var(--spacing-md);
}

/* Settings screen styles */
.settings-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.settings-container h2 {
    color: var(--text-dark);
    text-align: center;
    margin-bottom: var(--spacing-md);
}

.settings-group {
    background-color: var(--primary);
    color: var(--text-light);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    box-shadow: var(--card-shadow);
}

.settings-group h3 {
    margin-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--primary-light);
    padding-bottom: var(--spacing-sm);
}

.setting-item {
    display: flex;
    flex-direction: column;
    margin-bottom: var(--spacing-md);
}

@media (min-width: 768px) {
    .setting-item {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
    }
}

.setting-item label {
    margin-bottom: var(--spacing-sm);
    font-weight: 500;
}

@media (min-width: 768px) {
    .setting-item label {
        margin-bottom: 0;
    }
}

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

input[type="number"] {
    background-color: var(--primary-dark);
    color: var(--text-light);
    border: 1px solid var(--primary-light);
    border-radius: var(--border-radius);
    padding: var(--spacing-sm);
    width: 100px;
}

.small-btn {
    background-color: var(--primary-light);
    color: var(--primary-dark);
    border: none;
    border-radius: var(--border-radius);
    padding: var(--spacing-sm);
    cursor: pointer;
    transition: all var(--transition-speed);
}

.small-btn:hover {
    background-color: var(--secondary-light);
    box-shadow: var(--neon-glow);
}

.theme-toggle {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.toggle-switch {
    position: relative;
    width: 60px;
    height: 30px;
    background-color: var(--primary-dark);
    border-radius: 15px;
    cursor: pointer;
    transition: background-color var(--transition-speed);
}

.toggle-knob {
    position: absolute;
    top: 3px;
    left: 3px;
    width: 24px;
    height: 24px;
    background-color: var(--secondary-light);
    border-radius: 50%;
    transition: transform var(--transition-speed);
}

.dark-theme .toggle-switch {
    background-color: var(--primary-light);
}

.dark-theme .toggle-knob {
    transform: translateX(30px);
}

.danger-btn {
    background-color: #e74c3c;
    color: white;
    border: none;
    border-radius: var(--border-radius);
    padding: var(--spacing-sm) var(--spacing-md);
    cursor: pointer;
    transition: all var(--transition-speed);
}

.danger-btn:hover {
    background-color: #c0392b;
    box-shadow: 0 0 5px rgba(231, 76, 60, 0.5), 0 0 10px rgba(231, 76, 60, 0.3);
}

.about-info {
    line-height: 1.8;
}

.about-info p {
    margin-bottom: var(--spacing-sm);
}

/* Footer styles */
.app-footer {
    text-align: center;
    padding: var(--spacing-md);
    margin-top: var(--spacing-lg);
    color: var(--text-dark);
    font-size: 0.9rem;
}

.app-footer a {
    color: var(--primary);
    text-decoration: none;
    transition: color var(--transition-speed);
}

.app-footer a:hover {
    color: var(--primary-light);
    text-decoration: underline;
}

/* Responsive adjustments */
@media (max-width: 480px) {
    .stat-card {
        padding: var(--spacing-md);
    }
    
    .stat-value {
        font-size: 1.5rem;
    }
    
    .action-btn {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: 1rem;
    }
}

/* Utility classes */
.text-center {
    text-align: center;
}

.mb-1 {
    margin-bottom: var(--spacing-sm);
}

.mb-2 {
    margin-bottom: var(--spacing-md);
}

.mb-3 {
    margin-bottom: var(--spacing-lg);
}