/**
 * Reading Controls Styles
 * Floating control panel for lesson customization
 */

.reading-controls {
    position: fixed;
    right: 2rem;
    bottom: 6rem;
    z-index: 999;
}

.control-toggle {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-purple-500), var(--color-blue-500));
    border: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 20px rgba(147, 51, 234, 0.3);
    transition: all 0.3s ease;
}

.control-toggle:hover {
    transform: scale(1.1) rotate(45deg);
    box-shadow: 0 6px 30px rgba(147, 51, 234, 0.5);
}

.control-panel {
    position: absolute;
    bottom: 70px;
    right: 0;
    width: 320px;
    background: rgba(15, 15, 25, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: 16px;
    padding: 0;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(147, 51, 234, 0.1);
    border: 1px solid rgba(147, 51, 234, 0.2);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px) scale(0.9);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.control-panel.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0) scale(1);
}

.control-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    background: linear-gradient(135deg, rgba(147, 51, 234, 0.15), rgba(59, 130, 246, 0.15));
}

.control-header span {
    font-weight: 600;
    font-size: 1rem;
    color: #ffffff;
}

.control-close {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    background: transparent;
    border: none;
    color: rgba(255, 255, 255, 0.6);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
}

.control-close:hover {
    background: rgba(255, 255, 255, 0.15);
    color: #ffffff;
}

.control-section {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.control-section:last-child {
    border-bottom: none;
}

.control-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 0.75rem;
}

.control-label i {
    font-size: 1.1rem;
    color: #a78bfa;
}

.control-buttons {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.control-btn {
    padding: 0.5rem 1rem;
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: #e0e0e0;
    cursor: pointer;
    font-size: 0.875rem;
    font-weight: 500;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    white-space: nowrap;
}

.control-btn:hover {
    background: rgba(147, 51, 234, 0.2);
    border-color: rgba(147, 51, 234, 0.5);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(147, 51, 234, 0.2);
}

.control-btn i {
    font-size: 1rem;
}

.control-value {
    padding: 0.5rem 1rem;
    border-radius: 8px;
    background: rgba(147, 51, 234, 0.1);
    border: 1px solid rgba(147, 51, 234, 0.2);
    color: var(--color-purple-300);
    font-size: 0.875rem;
    font-weight: 600;
    min-width: 60px;
    text-align: center;
}

.control-reset {
    background: rgba(255, 152, 0, 0.1);
    border-color: rgba(255, 152, 0, 0.2);
    color: #ff9800;
}

.control-reset:hover {
    background: rgba(255, 152, 0, 0.2);
    border-color: #ff9800;
}

.width-buttons {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.5rem;
}

.width-btn {
    justify-content: center;
}

.width-btn.active {
    background: linear-gradient(135deg, var(--color-purple-500), var(--color-blue-500));
    border-color: var(--color-purple-400);
    color: white;
}

.action-btn {
    flex: 1;
}

.control-footer {
    padding: 1rem 1.5rem;
    background: rgba(147, 51, 234, 0.08);
    border-radius: 0 0 16px 16px;
}

.reset-all {
    width: 100%;
    justify-content: center;
    background: rgba(244, 67, 54, 0.1);
    border-color: rgba(244, 67, 54, 0.2);
    color: #f44336;
    font-weight: 600;
}

.reset-all:hover {
    background: rgba(244, 67, 54, 0.2);
    border-color: #f44336;
}

/* Content width adjustments */
.tutorial-container.width-narrow {
    max-width: 700px;
}

.tutorial-container.width-medium {
    max-width: 900px;
}

.tutorial-container.width-wide {
    max-width: 1200px;
}

/* Focus mode styles */
.hidden-focus {
    display: none !important;
}

body.focus-mode-active {
    padding-top: 2rem;
}

body.focus-mode-active .tutorial-content {
    padding-top: 2rem;
}

/* Responsive design */
@media (max-width: 768px) {
    .reading-controls {
        right: 1rem;
        bottom: 5rem;
    }

    .control-toggle {
        width: 48px;
        height: 48px;
        font-size: 1.25rem;
    }

    .control-panel {
        width: calc(100vw - 2rem);
        right: -1rem;
    }

    .control-section {
        padding: 1rem;
    }

    .control-header {
        padding: 1rem;
    }

    .width-buttons {
        grid-template-columns: 1fr;
    }
}

/* Print styles */
@media print {
    .reading-controls {
        display: none !important;
    }
    
    .tutorial-body {
        font-size: 12pt !important;
        line-height: 1.6 !important;
    }
}

/* Smooth transitions for content adjustments */
.tutorial-body {
    transition: font-size 0.3s ease, line-height 0.3s ease;
}

.tutorial-container {
    transition: max-width 0.3s ease;
    margin-left: auto;
    margin-right: auto;
}

/* Light Theme Adjustments */
[data-theme="light"] .control-panel {
    background: rgba(255, 255, 255, 0.95);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1), 0 0 0 1px rgba(147, 51, 234, 0.1);
    border: 1px solid rgba(147, 51, 234, 0.2);
}

[data-theme="light"] .control-header {
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    background: linear-gradient(135deg, rgba(147, 51, 234, 0.08), rgba(59, 130, 246, 0.08));
}

[data-theme="light"] .control-header span {
    color: var(--text-primary);
}

[data-theme="light"] .control-close {
    color: var(--text-secondary);
}

[data-theme="light"] .control-close:hover {
    background: rgba(0, 0, 0, 0.05);
    color: var(--text-primary);
}

[data-theme="light"] .control-section {
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

[data-theme="light"] .control-label {
    color: var(--text-primary);
}

[data-theme="light"] .control-label i {
    color: var(--color-purple-500);
}

[data-theme="light"] .control-btn {
    background: rgba(0, 0, 0, 0.03);
    border: 1px solid rgba(0, 0, 0, 0.1);
    color: var(--text-primary);
}

[data-theme="light"] .control-btn:hover {
    background: rgba(147, 51, 234, 0.1);
    border-color: rgba(147, 51, 234, 0.3);
    box-shadow: 0 4px 12px rgba(147, 51, 234, 0.15);
}

[data-theme="light"] .control-value {
    background: rgba(147, 51, 234, 0.08);
    border: 1px solid rgba(147, 51, 234, 0.15);
    color: var(--color-purple-600);
}

[data-theme="light"] .control-reset {
    background: rgba(255, 152, 0, 0.08);
    border-color: rgba(255, 152, 0, 0.2);
    color: var(--color-orange-600);
}

[data-theme="light"] .control-reset:hover {
    background: rgba(255, 152, 0, 0.15);
    border-color: var(--color-orange-600);
}

[data-theme="light"] .width-btn.active {
    background: linear-gradient(135deg, var(--color-purple-500), var(--color-blue-500));
    border-color: var(--color-purple-400);
    color: white;
}

[data-theme="light"] .control-footer {
    background: rgba(147, 51, 234, 0.05);
}

[data-theme="light"] .reset-all {
    background: rgba(244, 67, 54, 0.08);
    border-color: rgba(244, 67, 54, 0.2);
    color: #d32f2f;
}

[data-theme="light"] .reset-all:hover {
    background: rgba(244, 67, 54, 0.15);
    border-color: #d32f2f;
}

/* ===== NIGHT READING MODE ===== */
/* Extra dark theme for comfortable late-night reading */
[data-reading-mode="night"] {
    --bg-primary: #000000;
    --bg-secondary: #0a0a0a;
    --bg-tertiary: #0f0f0f;
    
    --text-primary: rgba(255, 255, 255, 0.95);
    --text-secondary: rgba(255, 255, 255, 0.65);
    --text-tertiary: rgba(255, 255, 255, 0.45);
    
    --glass-bg: linear-gradient(135deg, rgba(255, 255, 255, 0.02) 0%, rgba(255, 255, 255, 0.04) 100%);
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.6);
}

[data-reading-mode="night"] .background-container {
    background: #000000;
}

[data-reading-mode="night"] .gradient-orb {
    opacity: 0.15;
}

[data-reading-mode="night"] .grid-pattern {
    opacity: 0.05;
}

[data-reading-mode="night"] .navbar {
    background: rgba(0, 0, 0, 0.98);
    border-bottom-color: rgba(255, 255, 255, 0.05);
}

[data-reading-mode="night"] .tutorial-body pre {
    background: rgba(0, 0, 0, 0.5);
    border-color: rgba(147, 51, 234, 0.15);
}

[data-reading-mode="night"] .tutorial-body code {
    background: rgba(147, 51, 234, 0.08);
}

[data-reading-mode="night"] .note-box {
    background: rgba(0, 0, 0, 0.3);
}

[data-reading-mode="night"] .example-box {
    background: rgba(147, 51, 234, 0.03);
    border-color: rgba(147, 51, 234, 0.15);
}

[data-reading-mode="night"] .output-box {
    background: rgba(0, 0, 0, 0.6);
}

[data-reading-mode="night"] .exercise-item {
    background: rgba(0, 0, 0, 0.3);
}

[data-reading-mode="night"] .control-panel {
    background: rgba(0, 0, 0, 0.98);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.8), 0 0 0 1px rgba(147, 51, 234, 0.1);
}