/* CSS Variables for theming */
:root {
    /* Light theme colors */
    --bg-primary: #f8fafc;
    --bg-secondary: #ffffff;
    --bg-tertiary: #f1f5f9;
    --text-primary: #1e293b;    /* Darker for better contrast */
    --text-secondary: #475569;  /* Slightly darker gray-blue */
    --text-muted: #64748b;      /* Keep this tone for subtle info */
    --border-color: #cbd5e1;    /* Slightly darker for separation */
    --border-light: #f1f5f9;
    --shadow: rgba(0, 0, 0, 0.1);
    --shadow-hover: rgba(0, 0, 0, 0.15);
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-secondary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    
    /* Magical theme colors */
    --arcane-purple: #756AA2;
    --arcane-glow: rgba(117, 106, 162, 0.1);
    --arcane-shimmer: rgba(117, 106, 162, 0.2);
    --magical-gradient: radial-gradient(circle at top center, rgba(117, 106, 162, 0.15) 0%, transparent 70%);
    --accent: #7c3aed;
}

[data-theme="dark"] {
    /* Dark theme colors - lightened for less fatigue */
    --bg-primary: #1a2433;
    --bg-secondary: #253447;
    --bg-tertiary: #334155;
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-muted: #64748b;
    --border-color: #475569;
    --border-light: #334155;
    --shadow: rgba(0, 0, 0, 0.3);
    --shadow-hover: rgba(0, 0, 0, 0.4);
    --gradient-primary: linear-gradient(135deg, #4c1d95 0%, #7c3aed 100%);
    --gradient-secondary: linear-gradient(135deg, #4c1d95 0%, #7c3aed 100%);
    
    /* Magical theme colors for dark mode */
    --arcane-purple: #9F7AEA;
    --arcane-glow: rgba(159, 122, 234, 0.15);
    --arcane-shimmer: rgba(159, 122, 234, 0.25);
    --magical-gradient: radial-gradient(circle at top center, rgba(159, 122, 234, 0.2) 0%, transparent 70%);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    background-image: var(--magical-gradient);
    transition: background-color 0.3s ease, color 0.3s ease;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

/* Header */
header {
    margin-bottom: 40px;
    padding: 40px 0;
    background: var(--gradient-primary);
    color: white;
    border-radius: 12px;
    box-shadow: 0 4px 6px var(--shadow);
    transition: background 0.3s ease, box-shadow 0.3s ease;
}

.header-content {
    display: flex;
    justify-content: center;
    align-items: center;
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 20px;
}

.header-text {
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
}

.header-title-row {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
    justify-content: center;
}

.header-version .version-info {
    font-size: 0.95rem;
    color: rgba(255, 255, 255, 0.95);
    font-weight: 600;
    background: rgba(0, 0, 0, 0.25);
    padding: 10px 22px;
    border-radius: 24px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.25);
    letter-spacing: 0.6px;
    text-decoration: none;
}

.header-version .version-info:hover {
    text-decoration: none;
}

.header-version .version-info[data-loading="true"] {
    visibility: hidden;
}


.version-info a {
    color: inherit;
    text-decoration: underline;
}

.version-info a:hover {
    text-decoration: none;
}

/* Better contrast for light mode */
[data-theme="light"] .header-version .version-info {
    background: rgba(0, 0, 0, 0.15);
    color: rgba(255, 255, 255, 1);
    border: 1px solid rgba(255, 255, 255, 0.3);
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

/* Update available indicator */
.version-info.update-available {
    color: #facc15 !important; /* warm gold shimmer - WCAG AA compliant on header background */
    font-weight: 600;
    transition: all 0.3s ease;
}

.version-info.update-available.pulse {
    animation: pulse 2s ease-in-out infinite;
    cursor: pointer;
}

@keyframes pulse {
    0%, 100% { 
        opacity: 1; 
    }
    50% { 
        opacity: 0.8; 
    }
}

header h1 {
    font-size: 2.5rem;
    margin-bottom: 10px;
    font-weight: 700;
}

header p {
    font-size: 1.1rem;
    opacity: 0.9;
}

/* Fixed theme toggle in bottom corner */
.theme-toggle-fixed {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 1000;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 14px;
}

.theme-toggle-fixed .quick-controls {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 10px;
    position: relative;
}

.theme-button {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 52px;
    height: 52px;
    padding: 0;
    border-radius: 50%;
    border: 2px solid var(--accent);
    background: rgba(255, 255, 255, 0.95);
    color: #1e293b;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(10px);
    cursor: pointer;
    transition: all 0.3s ease;
    overflow: hidden;
    font-weight: 600;
    gap: 0;
}

.theme-button .theme-emoji {
    font-size: 1.6rem;
    transition: transform 0.3s ease;
}

.theme-button .theme-label {
    font-size: 0.95rem;
    opacity: 0;
    max-width: 0;
    margin-left: 0;
    overflow: hidden;
    white-space: nowrap;
    transition: max-width 0.3s ease, opacity 0.3s ease, margin-left 0.3s ease, color 0.3s ease;
}

.theme-button:hover,
.theme-button:focus-visible {
    padding: 0 18px;
    border-radius: 28px;
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.4);
}

.theme-button:hover .theme-label,
.theme-button:focus-visible .theme-label {
    opacity: 1;
    max-width: 160px;
    margin-left: 12px;
}

[data-theme="light"] .theme-button {
    background: rgba(255, 255, 255, 0.95);
    color: #1e293b;
    border: 2px solid var(--accent);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

[data-theme="light"] .theme-button:hover,
[data-theme="light"] .theme-button:focus-visible {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #ffffff;
    border-color: #667eea;
}

[data-theme="dark"] .theme-button {
    background: rgba(30, 41, 59, 0.95);
    color: #f1f5f9;
    border: 2px solid var(--accent);
    box-shadow: 0 6px 20px rgba(124, 58, 237, 0.4), 0 0 30px rgba(124, 58, 237, 0.2);
}

[data-theme="dark"] .theme-button:hover,
[data-theme="dark"] .theme-button:focus-visible {
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    color: #1e293b;
    border-color: #f8fafc;
}

.grimoire-float-btn {
    width: 52px;
    height: 52px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.6rem;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    background: rgba(255, 255, 255, 0.95);
    color: #1e293b;
    border: 2px solid var(--accent);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(10px);
    padding: 0;
}

.grimoire-float-btn:hover,
.grimoire-float-btn:focus-visible {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.4);
}

[data-theme="light"] .grimoire-float-btn {
    background: rgba(255, 255, 255, 0.95);
    color: #1e293b;
    border: 2px solid var(--accent);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

[data-theme="light"] .grimoire-float-btn:hover,
[data-theme="light"] .grimoire-float-btn:focus-visible {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #ffffff;
    border-color: #667eea;
}

[data-theme="dark"] .grimoire-float-btn {
    background: rgba(30, 41, 59, 0.95);
    color: #f1f5f9;
    border: 2px solid var(--accent);
    box-shadow: 0 6px 20px rgba(124, 58, 237, 0.4), 0 0 30px rgba(124, 58, 237, 0.2);
}

[data-theme="dark"] .grimoire-float-btn:hover,
[data-theme="dark"] .grimoire-float-btn:focus-visible {
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    color: #1e293b;
    border-color: #f8fafc;
}

.grimoire-float-btn:focus-visible {
    outline: none;
    box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.35), 0 8px 25px rgba(0, 0, 0, 0.4);
}

.settings-button {
    width: 52px;
    height: 52px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.6rem;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    background: rgba(255, 255, 255, 0.95);
    color: #1e293b;
    border: 2px solid var(--accent);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(10px);
}

.settings-button .icon-close {
    display: none;
    font-size: 1.2rem;
}

.settings-button .icon-tome {
    display: inline;
    font-size: 1.6rem;
}

.settings-button:hover,
.settings-button[aria-expanded="true"] {
    background: var(--accent);
    color: var(--text-primary);
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.4);
    border: 2px solid var(--accent);
}

[data-theme="light"] .settings-button:hover {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #ffffff;
    border-color: #667eea;
}

[data-theme="light"] .settings-button[aria-expanded="true"] {
    background: #ffffff;
    border-color: rgba(102, 126, 234, 0.45);
    color: #1e293b;
    box-shadow: 0 8px 20px rgba(102, 126, 234, 0.25);
}

[data-theme="dark"] .settings-button {
    background: rgba(30, 41, 59, 0.95);
    color: #f1f5f9;
    border: 2px solid var(--accent);
    box-shadow: 0 6px 20px rgba(124, 58, 237, 0.4), 0 0 30px rgba(124, 58, 237, 0.2);
}

[data-theme="dark"] .settings-button:hover,
[data-theme="dark"] .settings-button[aria-expanded="true"] {
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    color: #1e293b;
    box-shadow: 0 8px 25px rgba(248, 250, 252, 0.6), 0 0 30px rgba(248, 250, 252, 0.3);
    border: 2px solid #f8fafc;
}

.settings-button[aria-expanded="true"] .icon-close {
    display: inline;
    color: #ffffff !important;
}

.settings-button[aria-expanded="true"] .icon-tome {
    display: none;
}

.settings-panel {
    /* Keep positioning (bottom/right) */
    position: absolute;
    bottom: 120px;
    right: 0;
    width: 400px; /* Widen for better text spacing */
    height: auto; /* Let content drive height */
    background: rgba(15, 23, 42, 0.98); /* Deep dark blue */
    border: 1px solid rgba(139, 92, 246, 0.4); /* Purple border */
    border-radius: 12px;
    box-shadow: 
        0 10px 40px rgba(0, 0, 0, 0.5),
        0 0 20px rgba(139, 92, 246, 0.15); /* Subtle purple glow */
    padding: 0; /* Remove padding here, move to body/header */
    overflow: hidden; /* For header border radius */
    backdrop-filter: blur(12px);
    display: flex;
    flex-direction: column;
}

.settings-panel[hidden] {
    display: none;
}

/* Add a Gradient Header */
.settings-panel-header {
    background: linear-gradient(to right, rgba(139, 92, 246, 0.15), transparent);
    padding: 16px 20px;
    border-bottom: 1px solid rgba(139, 92, 246, 0.2);
    display: flex;
    align-items: center;
    gap: 8px;
}

.settings-panel-header h3 {
    margin: 0;
    font-size: 1rem;
    font-weight: 700;
    color: #f8fafc;
    letter-spacing: 0.02em;
}

/* Style the Body */
.settings-panel-body {
    padding: 24px; /* Increased padding for more spacious feel */
    display: flex;
    flex-direction: column;
    gap: 16px; /* Space out the options */
}

.settings-option {
    display: flex;
    align-items: flex-start; /* So toggle stays at top when text wraps */
    gap: 12px;
}

/* Hide default checkbox */
.settings-option input[type="checkbox"] {
    appearance: none;
    -webkit-appearance: none;
    width: 40px;
    height: 22px;
    background: #475569; /* Slate-600 (Off) */
    border-radius: 11px;
    position: relative;
    cursor: pointer;
    outline: none;
    transition: background 0.3s;
    flex-shrink: 0; /* Don't squish */
    margin: 0;
    margin-top: 2px; /* Align with first line of text */
}

/* Toggle Knob */
.settings-option input[type="checkbox"]::after {
    content: '';
    position: absolute;
    top: 2px;
    left: 2px;
    width: 18px;
    height: 18px;
    background: white;
    border-radius: 50%;
    transition: transform 0.3s;
    box-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

/* Checked State (On) */
.settings-option input[type="checkbox"]:checked {
    background: #9333ea; /* Purple-600 (On) */
}

.settings-option input[type="checkbox"]:checked::after {
    transform: translateX(18px);
}

/* Text Label */
.settings-option label {
    font-size: 0.9rem;
    color: #e2e8f0;
    cursor: pointer;
    margin: 0;
    flex: 1; /* Ensure it takes up all available space next to the toggle */
    white-space: normal; /* Allow wrapping */
    line-height: 1.4; /* Better readability for multi-line text */
}

/* Light Mode Overrides */
[data-theme="light"] .settings-panel {
    background: rgba(255, 255, 255, 0.98); /* Clean white background */
    border: 1px solid rgba(139, 92, 246, 0.25); /* Softer purple border */
    box-shadow: 
        0 10px 40px rgba(0, 0, 0, 0.15),
        0 0 20px rgba(139, 92, 246, 0.1); /* Lighter glow for light mode */
}

[data-theme="light"] .settings-panel-header {
    background: linear-gradient(to right, rgba(139, 92, 246, 0.08), transparent);
    border-bottom: 1px solid rgba(139, 92, 246, 0.15);
}

[data-theme="light"] .settings-panel-header h3 {
    color: #1e293b; /* Dark slate for good contrast */
}

[data-theme="light"] .settings-option label {
    color: #475569; /* Slate-600 for readable text in light mode */
}

[data-theme="light"] .settings-option input[type="checkbox"] {
    background: #cbd5e1; /* Lighter gray for off state in light mode */
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.1);
}

[data-theme="light"] .settings-option input[type="checkbox"]:checked {
    background: #9333ea; /* Keep purple for on state */
}

[data-theme="light"] .settings-option input[type="checkbox"]::after {
    background: #ffffff;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.15);
}

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.theme-toggle-fixed .btn::after,
.settings-button::after {
    content: "";
    position: absolute;
    bottom: -8px;
    left: 50%;
    width: 70%;
    height: 8px;
    transform: translateX(-50%);
    background: radial-gradient(ellipse at center, rgba(147, 51, 234, 0.25), transparent 70%);
    filter: blur(6px);
    pointer-events: none;
}

.theme-button,
.settings-button {
    outline: none;
}

.theme-button:focus-visible,
.settings-button:focus-visible {
    outline: none;
    box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.35), 0 8px 25px rgba(0, 0, 0, 0.4);
}

.settings-button[data-tooltip]::before {
    content: attr(data-tooltip);
    position: absolute;
    bottom: calc(100% + 12px);
    right: 0;
    background: rgba(15, 23, 42, 0.92);
    color: #f8fafc;
    padding: 6px 10px;
    border-radius: 8px;
    font-size: 0.8rem;
    white-space: nowrap;
    box-shadow: 0 6px 18px rgba(15, 23, 42, 0.45);
    opacity: 0;
    visibility: hidden;
    transform: translateY(4px);
    pointer-events: none;
    transition: opacity 0.18s ease, transform 0.18s ease, visibility 0.18s ease;
    z-index: 1001;
}

[data-theme="light"] .settings-button[data-tooltip]::before {
    background: rgba(79, 70, 229, 0.92);
    box-shadow: 0 6px 18px rgba(79, 70, 229, 0.35);
}

.settings-button[data-tooltip]:hover::before {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

/* =========================================
   CUSTOM SCROLLBARS
   ========================================= */

/* --- Default / Light Mode --- */
:root {
    --scrollbar-width: 8px;
    --scrollbar-track: transparent;
    --scrollbar-thumb: #cbd5e1;       /* Slate-300 */
    --scrollbar-thumb-hover: #94a3b8; /* Slate-400 */
}

/* --- Dark Mode Variables --- */
[data-theme="dark"] {
    --scrollbar-thumb: #334155;       /* Slate-700 */
    --scrollbar-thumb-hover: #7c3aed; /* Brand Purple (Magical glow on hover) */
}

/* --- Firefox Standard --- */
* {
    scrollbar-width: thin;
    scrollbar-color: var(--scrollbar-thumb) var(--scrollbar-track);
}

/* --- WebKit (Chrome, Edge, Safari) --- */
::-webkit-scrollbar {
    width: var(--scrollbar-width);
    height: var(--scrollbar-width);
}

::-webkit-scrollbar-track {
    background: var(--scrollbar-track);
}

::-webkit-scrollbar-thumb {
    background-color: var(--scrollbar-thumb);
    border-radius: 20px;       /* Fully rounded pill shape */
    border: 2px solid transparent; /* Creates padding effect so it doesn't touch edges */
    background-clip: content-box;
}

::-webkit-scrollbar-thumb:hover {
    background-color: var(--scrollbar-thumb-hover);
}

::-webkit-scrollbar-corner {
    background: transparent;
}

[data-theme="light"] .settings-button[aria-expanded="true"] .icon-close {
    color: #1e293b !important;
}