/* ==========================================================================
   1. Base Tokens, Typography, Reset & Global Safe Areas
   ========================================================================== */

/* Modern CSS Design System for Notes App */
:root {
    --bg-main: #0f172a;
    --bg-surface: #1e293b;
    --bg-surface-hover: #334155;
    --bg-card: #1e293b;
    --bg-input: #0f172a;
    --border-color: #334155;
    --border-focus: #38bdf8;
    
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --text-dim: #64748b;
    
    --primary: #38bdf8;
    --primary-hover: #0ea5e9;
    --primary-dim: rgba(56, 189, 248, 0.15);
    
    --success: #10b981;
    --success-hover: #059669;
    --success-dim: rgba(16, 185, 129, 0.15);
    
    --danger: #ef4444;
    --danger-hover: #dc2626;
    --danger-dim: rgba(239, 68, 68, 0.15);
    
    --tag-bg: #293548;
    --tag-text: #7dd3fc;
    
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
    --radius-full: 9999px;
    
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -2px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4), 0 4px 6px -4px rgba(0, 0, 0, 0.4);
    
    --font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    --transition: all 0.18s ease-in-out;
    
    --sat: env(safe-area-inset-top, 0px);
    --sar: env(safe-area-inset-right, 0px);
    --sab: env(safe-area-inset-bottom, 0px);
    --sal: env(safe-area-inset-left, 0px);
    --navbar-height: 60px;
}

[data-theme="light"] {
    --bg-main: #f1f5f9;
    --bg-surface: #ffffff;
    --bg-surface-hover: #f8fafc;
    --bg-card: #ffffff;
    --bg-input: #f8fafc;
    --border-color: #cbd5e1;
    --border-focus: #0284c7;
    
    --text-main: #0f172a;
    --text-muted: #475569;
    --text-dim: #94a3b8;
    
    --primary: #0284c7;
    --primary-hover: #0369a1;
    --primary-dim: rgba(2, 132, 199, 0.1);
    
    --success: #059669;
    --success-hover: #047857;
    --success-dim: rgba(5, 150, 105, 0.1);
    
    --tag-bg: #e2e8f0;
    --tag-text: #0369a1;
    
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

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

html, body {
    overflow-x: clip;
    -webkit-tap-highlight-color: transparent;
}

body {
    background-color: var(--bg-main);
    color: var(--text-main);
    font-family: var(--font-family);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    min-height: 100vh;
    min-height: 100dvh;
}

.hidden {
    display: none !important;
}


/* Main Content */
.main-content {
    max-width: 900px;
    width: 100%;
    margin: 0 auto;
    padding: 32px 20px;
    display: flex;
    flex-direction: column;
    gap: 36px;
}


/* --- Responsive Mobile Overrides (max-width: 768px) --- */
@media (max-width: 768px) {
    /* 1. iOS Safari Auto-Zoom Fix (< 16px triggers zoom) */
    input, select, textarea,
    .input-styled, .search-input-box input, .form-group input,
    .search-mini-box input, .reader-select {
        font-size: 16px !important;
    }

    /* 2. Global Mobile App Container & Safe Areas */
    html, body {
        overflow-x: hidden;
        -webkit-overflow-scrolling: touch;
        min-height: 100dvh;
    }

    .app-shell {
        min-height: 100dvh;
        overflow-x: hidden;
    }

    .main-content,
    .srs-view,
    .reader-view {
        padding-bottom: calc(74px + env(safe-area-inset-bottom, 0px)) !important;
    }


}