/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Colors */
    --bg-primary: #fafafa;
    --bg-secondary: #ffffff;
    --bg-tertiary: #fafafa;
    --text-primary: #1a1a1a;
    --text-secondary: #666666;
    --accent-rpe: #f59e0b;
    --accent-sensitivity: #3b82f6;
    --accent-errors: #10b981;
    --accent-social: #8b5cf6;
    --border: #e5e5ff;
    --success: #059669;
    --neutral: #9ca3af;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;

    /* Typography */
    --font-system: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.5rem;
    --font-size-2xl: 2rem;

    /* Borders */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
}

body {
    font-family: var(--font-system);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: 600px;
    margin: 0 auto;
    padding: var(--spacing-md);
    padding-bottom: 6rem; /* Space for bottom nav */
}

/* Header */
header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-md) 0;
}

header h1 {
    font-size: var(--font-size-2xl);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.subtitle {
    color: var(--text-secondary);
    font-size: var(--font-size-lg);
}

/* Cards */
.card {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
    border: 1px solid var(--border);
}

.card-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

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

.form-label {
    display: block;
    font-weight: 500;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

.form-help {
    display: block;
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin-top: var(--spacing-xs);
}

/* Slider */
.slider-container {
    padding: var(--spacing-sm) 0;
}

input[type="range"] {
    width: 100%;
    height: 6px;
    border-radius: var(--radius-sm);
    background: var(--border);
    outline: none;
    -webkit-appearance: none;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--accent-sensitivity);
    cursor: pointer;
}

input[type="range"]::-moz-range-thumb {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--accent-sensitivity);
    cursor: pointer;
    border: none;
}

/* Text Input */
input[type="text"] {
    width: 100%;
    padding: var(--spacing-sm);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    font-family: var(--font-system);
    background: var(--bg-secondary);
    transition: border-color 0.2s ease;
    box-shadow: 0 2px 2px rgba(0, 0, 0, 0.02);
}

input[type="text"]:focus {
    outline: none;
    border-color: var(--accent-sensitivity);
}

.loop-input-row {
    display: flex;
    gap: var(--spacing-xs);
    align-items: stretch;
    margin-bottom: var(--spacing-xs);
}

.loop-input-row input {
    flex: 1;
}

.loop-input-flags {
    display: flex;
    flex-direction: column;
    gap: 2px;
    flex-shrink: 0;
}

.loop-input-flags .loop-flag {
    flex: 1;
    min-height: 0;
}

/* Button Groups */
.btn-group {
    display: flex;
    gap: var(--spacing-xs);
    flex-wrap: wrap;
}

.btn-option {
    flex: 1;
    min-width: 60px;
    padding: var(--spacing-sm);
    border: 1px solid var(--border);
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-option:hover {
    border-color: var(--accent-sensitivity);
    background: rgba(59, 130, 246, 0.05);
}

.btn-option.active {
    border-color: var(--accent-sensitivity);
    background: var(--accent-sensitivity);
    color: white;
    font-weight: 500;
}

/* Primary Button */
.btn-primary {
    width: 100%;
    padding: var(--spacing-md);
    background: var(--accent-sensitivity);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-size: var(--font-size-lg);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    margin-top: var(--spacing-md);
}

.btn-primary:hover {
    background: #2563eb;
    transform: translateY(-1px);
    box-shadow: 0 4px 6px rgba(59, 130, 246, 0.2);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-primary:disabled {
    background: var(--neutral);
    cursor: not-allowed;
    transform: none;
}

/* Base Item Style - reused across different item types */
.action-item,
.loop-item,
.stat-card {
    padding: var(--spacing-md);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background: var(--bg-tertiary);
    margin-bottom: var(--spacing-sm);
}

/* Action Items */
.action-item {
    display: flex;
    align-items: center;
    cursor: pointer;
    transition: all 0.2s ease;
}

.action-item:hover {
    border-color: var(--accent-sensitivity);
    background: rgba(59, 130, 246, 0.02);
}

.action-item.completed {
    border-color: var(--success);
    background: rgba(5, 150, 105, 0.05);
}

.action-item.completed[data-is-long="true"] {
    cursor: pointer;
    opacity: 1;
}

.action-item.completed[data-is-long="true"]:hover {
    border-color: var(--success);
    background: rgba(5, 150, 105, 0.1);
}

.action-checkbox {
    background: var(--bg-secondary);
    width: 32px;
    height: 32px;
    min-width: 32px;
    border: 1px solid var(--border);
    border-radius: 50%;
    margin-right: var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    transition: all 0.2s ease;
}

.action-item.completed .action-checkbox {
    border-color: var(--success);
    background: var(--success);
    color: white;
}

.action-content {
    flex: 1;
}

.action-title {
    font-weight: 500;
    margin-bottom: var(--spacing-xs);
}

.action-meta {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

/* Stats */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.stat-card {
    text-align: center;
}

.stat-card.rpe {
    background: rgba(245, 158, 11, 0.1);
    border-color: var(--accent-rpe);
}

.stat-card.sensitivity {
    background: rgba(59, 130, 246, 0.1);
    border-color: var(--accent-sensitivity);
}

.stat-card.errors {
    background: rgba(16, 185, 129, 0.1);
    border-color: var(--accent-errors);
}

.stat-card.social {
    background: rgba(139, 92, 246, 0.1);
    border-color: var(--accent-social);
}

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

.stat-label {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    font-weight: 500;
}

/* Bottom Navigation */
.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: space-around;
    padding: var(--spacing-xs) var(--spacing-md);
    box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.05);
    gap: var(--spacing-md);
}

.nav-btn {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.25rem;
    padding: var(--spacing-xs);
    border: none;
    background: none;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s ease;
    max-width: 120px;
}

.nav-btn .icon {
    font-size: 1.5rem;
}

.nav-btn span:last-child {
    font-size: var(--font-size-sm);
}

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

.nav-btn.active {
    color: var(--accent-sensitivity);
    font-weight: 500;
}

/* Progress Bar */
.progress-bar {
    height: 8px;
    background: var(--border);
    border-radius: var(--radius-sm);
    overflow: hidden;
    margin: var(--spacing-sm) 0;
}

.progress-fill {
    height: 100%;
    background: var(--accent-sensitivity);
    transition: width 0.3s ease;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: var(--spacing-xl) var(--spacing-md);
    color: var(--text-secondary);
}

.empty-state-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

.empty-state-text {
    font-size: var(--font-size-lg);
}

/* Loop Items */
.loop-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-sm);
    min-height: 64px;
}

.loop-item.completed {
    opacity: 0.6;
    cursor: pointer;
}

.loop-item.completed:hover {
    opacity: 0.8;
    border-color: var(--accent-sensitivity);
}

.loop-text {
    flex: 0 1 60%;
    font-size: var(--font-size-base);
    word-wrap: break-word;
    overflow-wrap: break-word;
    word-break: break-all;
    line-height: 1.4;
}

.loop-actions {
    display: flex;
    flex-direction: column;
    gap: 4px;
    flex-shrink: 0;
}

.loop-flags {
    display: flex;
    gap: var(--spacing-xs);
    align-items: center;
    flex-shrink: 0;
}

.loop-flag {
    width: 32px;
    height: 32px;
    border: 1px solid var(--border);
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-base);
    cursor: pointer;
    transition: none;
    display: flex;
    align-items: center;
    justify-content: center;
    -webkit-tap-highlight-color: transparent;
    -webkit-touch-callout: none;
    -webkit-user-select: none;
    user-select: none;
}

.loop-flag:focus,
.loop-flag:active,
.loop-flag:focus-visible {
    outline: none !important;
    border-color: var(--border);
    background: var(--bg-tertiary);
}

.loop-flag.active {
    border-color: var(--accent-sensitivity) !important;
    background: rgba(59, 130, 246, 0.1) !important;
    font-weight: bold;
}

.loop-flag.active:focus,
.loop-flag.active:active,
.loop-flag.active:focus-visible {
    border-color: var(--accent-sensitivity) !important;
    background: rgba(59, 130, 246, 0.1) !important;
}

.loop-delete {
    width: 32px;
    height: 32px;
    border: 1px solid #fecaca;
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 1.5rem;
    cursor: pointer;
    transition: none;
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
    -webkit-tap-highlight-color: transparent;
    -webkit-touch-callout: none;
    -webkit-user-select: none;
    user-select: none;
}

.loop-complete {
    width: 32px;
    height: 32px;
    border: 1px solid #6ee7b7;
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    color: var(--success);
    font-size: var(--font-size-lg);
    cursor: pointer;
    transition: none;
    display: flex;
    align-items: center;
    justify-content: center;
    -webkit-tap-highlight-color: transparent;
    -webkit-touch-callout: none;
    -webkit-user-select: none;
    user-select: none;
}

.loop-meta {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

/* Utility Classes */
.hidden {
    display: none;
}

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

.text-muted {
    color: var(--text-secondary);
}

.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }

/* Responsive */
@media (max-width: 640px) {
    .container {
        padding: var(--spacing-md) var(--spacing-md);
        padding-bottom: 6rem;
    }

    header h1 {
        font-size: var(--font-size-xl);
    }

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

    /* Ensure proper margins on mobile */
    .card,
    .action-item {
        margin-left: 0;
        margin-right: 0;
    }

    /* Better spacing for nav buttons on mobile */
    .bottom-nav {
        padding: var(--spacing-xs) var(--spacing-sm);
        gap: var(--spacing-sm);
    }
}