/* Core Design System & Tokens */
:root {
    --font-primary: 'Noto Sans TC', sans-serif;
    --font-english: 'Outfit', sans-serif;
    
    /* Dark Theme (Default) Colors */
    --bg-color: #0d0f14;
    --card-bg: rgba(22, 28, 38, 0.7);
    --card-border: rgba(255, 255, 255, 0.08);
    --text-primary: #f3f4f6;
    --text-secondary: #9ca3af;
    --primary-color: #ff3366; /* Neon Pink */
    --primary-hover: #ff5e84;
    --secondary-color: #00ffff; /* Neon Cyan */
    --accent-color: #ffaa00; /* Golden Yellow */
    --border-color: #000000;
    --shadow-color: rgba(0, 0, 0, 0.5);
    --manga-bg: #181d26;
    --manga-panel-bg: #0f1218;
    --btn-bg: rgba(255, 255, 255, 0.05);
    --btn-hover: rgba(255, 255, 255, 0.12);
    --glass-blur: 16px;
    --highlight-glow: 0 0 20px rgba(0, 255, 255, 0.6);
}

.light-theme {
    /* Light Theme Colors */
    --bg-color: #f5f6f8;
    --card-bg: rgba(255, 255, 255, 0.85);
    --card-border: rgba(0, 0, 0, 0.06);
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --primary-color: #e11d48; /* Warm Red-Pink */
    --primary-hover: #f43f5e;
    --secondary-color: #0ea5e9; /* Light Blue */
    --accent-color: #d97706; /* Amber */
    --border-color: #1e293b;
    --shadow-color: rgba(30, 41, 59, 0.15);
    --manga-bg: #ffffff;
    --manga-panel-bg: #fafafa;
    --btn-bg: rgba(0, 0, 0, 0.04);
    --btn-hover: rgba(0, 0, 0, 0.08);
    --highlight-glow: 0 0 20px rgba(14, 165, 233, 0.5);
}

/* Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    transition: background-color 0.3s ease, border-color 0.3s ease, color 0.3s ease;
}

body {
    font-family: var(--font-primary);
    background-color: var(--bg-color);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
    position: relative;
}

/* Background Gradients & Glow Effects */
.glow-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 10% 20%, rgba(255, 51, 102, 0.05) 0%, transparent 40%),
                radial-gradient(circle at 90% 80%, rgba(0, 255, 255, 0.05) 0%, transparent 40%);
    z-index: -1;
    pointer-events: none;
}

/* Header Styles */
.app-header {
    height: 70px;
    background-color: rgba(13, 15, 20, 0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--card-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 2rem;
    position: sticky;
    top: 0;
    z-index: 100;
}

.light-theme .app-header {
    background-color: rgba(245, 246, 248, 0.8);
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-family: var(--font-english);
    font-weight: 800;
    font-size: 1.4rem;
    color: var(--primary-color);
    letter-spacing: 1px;
}

.header-title {
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: 1px;
}

.header-controls {
    display: flex;
    gap: 0.75rem;
}

/* Buttons Styling */
.icon-btn {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    border: 1px solid var(--card-border);
    background-color: var(--btn-bg);
    color: var(--text-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 1.1rem;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.icon-btn:hover {
    background-color: var(--btn-hover);
    transform: translateY(-2px);
    border-color: var(--primary-color);
    color: var(--primary-color);
}

/* Ebook Main Layout Container */
.ebook-container {
    flex: 1;
    max-width: 1200px;
    width: 90%;
    margin: 1.5rem auto 7rem auto;
    position: relative;
    display: flex;
    flex-direction: column;
}

/* Pages Transition Logic */
.book-page {
    display: none;
    opacity: 0;
    transform: scale(0.98) translateY(10px);
    transition: opacity 0.4s ease, transform 0.4s ease;
    width: 100%;
}

.book-page.active {
    display: block;
    opacity: 1;
    transform: scale(1) translateY(0);
}

/* PAGE 0: Cover / Landing Styling */
.cover-layout {
    display: grid;
    grid-template-columns: 1.2fr 1.8fr;
    gap: 2rem;
    align-items: stretch;
}

.cover-main {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    backdrop-filter: blur(var(--glass-blur));
    border-radius: 20px;
    padding: 3rem 2.5rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: flex-start;
    box-shadow: 0 10px 30px rgba(0,0,0,0.15);
}

.manga-badge {
    background: linear-gradient(135deg, var(--primary-color), #ff00ff);
    color: white;
    font-weight: 700;
    font-size: 0.8rem;
    padding: 0.35rem 0.85rem;
    border-radius: 50px;
    margin-bottom: 1.5rem;
    letter-spacing: 1px;
}

.book-title {
    font-size: 2.8rem;
    font-weight: 900;
    line-height: 1.2;
    margin-bottom: 1rem;
    background: linear-gradient(45deg, var(--text-primary) 60%, var(--primary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.book-subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    line-height: 1.6;
}

.cover-illustration {
    position: relative;
    align-self: center;
    margin-bottom: 2.5rem;
    width: 100%;
    max-width: 250px;
    border-radius: 16px;
    overflow: hidden;
    border: 3px solid var(--border-color);
    box-shadow: 8px 8px 0px var(--border-color);
    background-color: var(--manga-panel-bg);
    cursor: pointer;
}

.cover-hero-img {
    width: 100%;
    height: auto;
    display: block;
    object-fit: cover;
}

.hero-label {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(0,0,0,0.8);
    color: white;
    font-size: 0.85rem;
    text-align: center;
    padding: 0.4rem;
    font-weight: bold;
}

.start-btn {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 1rem 2rem;
    border-radius: 50px;
    font-size: 1.1rem;
    font-weight: 700;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    box-shadow: 0 4px 15px rgba(255, 51, 102, 0.4);
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.start-btn:hover {
    background: var(--primary-hover);
    transform: scale(1.05) translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 51, 102, 0.6);
}

.character-intro-panel {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    backdrop-filter: blur(var(--glass-blur));
    border-radius: 20px;
    padding: 2.5rem;
    display: flex;
    flex-direction: column;
}

.section-title {
    font-size: 1.5rem;
    font-weight: 800;
    margin-bottom: 2rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    border-left: 5px solid var(--primary-color);
    padding-left: 0.75rem;
}

.characters-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    flex: 1;
}

.char-card {
    background: rgba(0,0,0,0.15);
    border: 1px solid var(--card-border);
    border-radius: 12px;
    padding: 1rem;
    display: flex;
    gap: 1rem;
    align-items: center;
    transition: all 0.25s ease;
    cursor: pointer;
}

.light-theme .char-card {
    background: rgba(255,255,255,0.6);
}

.char-card:hover {
    transform: translateY(-3px) scale(1.02);
    border-color: var(--secondary-color);
    box-shadow: 0 4px 15px rgba(0, 255, 255, 0.15);
}

.char-img-wrapper {
    width: 75px;
    height: 75px;
    border-radius: 50%;
    overflow: hidden;
    border: 2px solid var(--border-color);
    background-color: white;
    flex-shrink: 0;
}

.char-img-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.char-info {
    flex: 1;
}

.char-name {
    font-size: 1.05rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.char-tag {
    font-size: 0.7rem;
    background: var(--primary-color);
    color: white;
    padding: 0.1rem 0.4rem;
    border-radius: 4px;
}

.char-role {
    font-size: 0.8rem;
    color: var(--secondary-color);
    font-weight: 500;
    margin: 0.1rem 0 0.4rem 0;
}

.char-desc {
    font-size: 0.8rem;
    line-height: 1.5;
    color: var(--text-secondary);
}

/* PAGE 1-3: Manga Page Styles */
.manga-page-layout {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.manga-page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 0.5rem;
    border-bottom: 2px dashed var(--card-border);
    padding-bottom: 1rem;
}

.manga-page-title {
    font-size: 1.8rem;
    font-weight: 900;
    background: linear-gradient(to right, var(--text-primary), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.page-controls-top {
    display: flex;
    gap: 0.75rem;
}

.page-play-btn {
    background: var(--btn-bg);
    color: var(--text-primary);
    border: 1px solid var(--card-border);
    padding: 0.6rem 1.2rem;
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 700;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.2s ease;
}

.page-play-btn:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(255, 51, 102, 0.3);
}

.page-play-btn.playing {
    background: var(--secondary-color);
    color: #000;
    border-color: var(--secondary-color);
    box-shadow: 0 4px 12px rgba(0, 255, 255, 0.4);
}

/* 4-Panel Manga Grid Layout - Webtoon Style Vertical Layout */
.manga-grid {
    display: flex;
    flex-direction: column;
    gap: 2.5rem;
    background-color: var(--manga-bg);
    padding: 2rem;
    border-radius: 16px;
    border: 4px solid var(--border-color);
    box-shadow: 12px 12px 0px var(--border-color);
}

.manga-panel {
    background-color: var(--manga-panel-bg);
    border: 3px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
    position: relative;
    display: flex;
    flex-direction: row;
    align-items: stretch;
    transition: transform 0.3s cubic-bezier(0.25, 0.8, 0.25, 1), box-shadow 0.3s ease;
    box-shadow: 6px 6px 0px var(--border-color);
}

.manga-panel:hover {
    transform: translateY(-3px);
    box-shadow: 9px 9px 0px var(--border-color);
}

/* Active Highlight when dialogue is speaking */
.manga-panel.active {
    border-color: var(--secondary-color);
    box-shadow: 0 0 25px rgba(0, 255, 255, 0.4), 9px 9px 0px var(--secondary-color);
}

.panel-header-badge {
    position: absolute;
    top: 10px;
    left: 10px;
    background: var(--border-color);
    color: white;
    font-weight: 800;
    font-size: 0.75rem;
    padding: 0.25rem 0.65rem;
    border-radius: 4px;
    z-index: 10;
    font-family: var(--font-english);
    letter-spacing: 0.5px;
}

/* Panel Image wrapper - Left Side */
.panel-img-container {
    width: 55%;
    aspect-ratio: 16 / 10;
    position: relative;
    overflow: hidden;
    background-color: #000;
    border-right: 3px solid var(--border-color);
    flex-shrink: 0;
}

.panel-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.5s ease;
}

.manga-panel:hover .panel-img {
    transform: scale(1.02);
}

/* Panel Dialogues Box styling - Right Side */
.panel-dialogue-box {
    padding: 1.5rem;
    background: rgba(0, 0, 0, 0.02);
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    justify-content: center;
}

.light-theme .panel-dialogue-box {
    background: #ffffff;
}

/* Dialogue Box Header containing Play Button */
.panel-dialogue-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-bottom: 0.5rem;
    border-bottom: 1px dashed var(--card-border);
    margin-bottom: 0.25rem;
}

.panel-play-title {
    font-size: 0.9rem;
    font-weight: 800;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.panel-play-btn {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 0.5rem 1.1rem;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 700;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    box-shadow: 0 4px 10px rgba(255, 51, 102, 0.35);
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.panel-play-btn:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 15px rgba(255, 51, 102, 0.5);
}

.panel-play-btn.playing {
    background: var(--secondary-color);
    color: #000;
    box-shadow: 0 4px 10px rgba(0, 255, 255, 0.4);
}

.dialogue-item {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    border-radius: 8px;
    background-color: var(--btn-bg);
    border: 1px solid var(--card-border);
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

.dialogue-item:hover {
    border-color: var(--secondary-color);
    background-color: var(--btn-hover);
}

/* Highlight specifically active dialog */
.dialogue-item.active {
    background-color: rgba(0, 255, 255, 0.08);
    border-color: var(--secondary-color);
    transform: translateX(4px);
    box-shadow: 0 0 15px rgba(0, 255, 255, 0.15);
}

.light-theme .dialogue-item.active {
    background-color: rgba(14, 165, 233, 0.08);
}

.dialogue-speaker {
    font-size: 0.85rem;
    font-weight: 800;
    color: var(--primary-color);
    padding: 0.15rem 0.5rem;
    border-radius: 4px;
    background-color: rgba(255, 51, 102, 0.1);
    white-space: nowrap;
    text-transform: uppercase;
}

.dialogue-text {
    flex: 1;
    font-size: 0.95rem;
    line-height: 1.5;
    font-weight: 500;
}

/* Floating Footer Navigation Bar */
.navigation-bar {
    position: fixed;
    bottom: 1.5rem;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(13, 15, 20, 0.8);
    backdrop-filter: blur(12px);
    border: 1px solid var(--card-border);
    padding: 0.75rem 1.5rem;
    border-radius: 100px;
    display: flex;
    align-items: center;
    gap: 2rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    z-index: 99;
    max-width: 500px;
    width: 90%;
    justify-content: space-between;
}

.light-theme .navigation-bar {
    background: rgba(255, 255, 255, 0.85);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
}

.nav-btn {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 0.6rem 1.4rem;
    border-radius: 50px;
    font-size: 0.95rem;
    font-weight: 700;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-btn:hover:not(:disabled) {
    background: var(--primary-hover);
    transform: scale(1.05);
}

.nav-btn:disabled {
    background: var(--btn-bg);
    color: var(--text-secondary);
    border: 1px solid var(--card-border);
    cursor: not-allowed;
    opacity: 0.5;
}

.page-indicator {
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--text-secondary);
    opacity: 0.4;
    cursor: pointer;
    transition: all 0.3s ease;
}

.dot.active {
    background-color: var(--primary-color);
    opacity: 1;
    transform: scale(1.2);
}

#page-text {
    font-size: 0.85rem;
    font-weight: 700;
    margin-left: 0.5rem;
    color: var(--text-primary);
    white-space: nowrap;
}

/* Modal Window styles */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(8px);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex;
}

.modal-content {
    background-color: var(--bg-color);
    border: 2px solid var(--primary-color);
    padding: 2.5rem;
    border-radius: 20px;
    max-width: 500px;
    width: 90%;
    position: relative;
    box-shadow: 0 10px 40px rgba(255, 51, 102, 0.25);
    animation: modalFadeIn 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* Character zoom modal specific styling */
.char-modal-content {
    max-width: 550px;
    border-color: var(--secondary-color);
    box-shadow: 0 10px 40px rgba(0, 255, 255, 0.2);
}

.char-modal-img-wrapper {
    width: 100%;
    max-height: 380px;
    overflow: hidden;
    border-radius: 12px;
    border: 3px solid var(--border-color);
    box-shadow: 6px 6px 0 var(--border-color);
    margin-bottom: 1.5rem;
    background-color: white;
}

.char-modal-img-wrapper img {
    width: 100%;
    height: auto;
    display: block;
    object-fit: contain;
}

#char-modal-name {
    font-size: 1.6rem;
    font-weight: 900;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

#char-modal-role {
    font-size: 0.95rem;
    color: var(--secondary-color);
    font-weight: 700;
    margin-bottom: 0.75rem;
}

#char-modal-desc {
    font-size: 0.95rem;
    line-height: 1.6;
    color: var(--text-secondary);
}

.close-modal, .close-char-modal, .close-settings-modal {
    position: absolute;
    top: 1rem;
    right: 1.25rem;
    font-size: 1.8rem;
    cursor: pointer;
    color: var(--text-secondary);
    transition: color 0.2s ease;
    z-index: 20;
}

.close-modal:hover, .close-char-modal:hover, .close-settings-modal:hover {
    color: var(--primary-color);
}

.modal-content h2 {
    font-size: 1.5rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    color: var(--primary-color);
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.modal-content ul {
    list-style: none;
}

.modal-content li {
    margin-bottom: 1rem;
    font-size: 0.95rem;
    line-height: 1.6;
    color: var(--text-primary);
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
}

.modal-content li i {
    color: var(--secondary-color);
    margin-top: 0.25rem;
    flex-shrink: 0;
}

/* Voice Settings specific styling */
.settings-modal-content {
    max-width: 500px;
    border-color: var(--secondary-color);
    box-shadow: 0 10px 40px rgba(0, 255, 255, 0.2);
}

.settings-group {
    margin-top: 1rem;
    margin-bottom: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.settings-group label {
    font-size: 0.95rem;
    font-weight: 800;
    color: var(--text-primary);
}

.settings-hint {
    font-size: 0.75rem;
    color: var(--text-secondary);
    line-height: 1.5;
    margin-top: 0.25rem;
}

.settings-subgroup {
    background: rgba(0,0,0,0.18);
    border: 1px solid var(--card-border);
    border-radius: 12px;
    padding: 1.25rem;
    margin-top: 0.5rem;
    display: flex;
    flex-direction: column;
    gap: 0.85rem;
}

.light-theme .settings-subgroup {
    background: rgba(0,0,0,0.03);
}

.subgroup-title {
    font-size: 0.9rem;
    font-weight: 800;
    color: var(--secondary-color);
    border-bottom: 1px solid var(--card-border);
    padding-bottom: 0.4rem;
    margin-bottom: 0.25rem;
}

.voice-picker-row {
    display: grid;
    grid-template-columns: 1.3fr 2.7fr;
    align-items: center;
    gap: 0.75rem;
}

.voice-picker-row label {
    font-size: 0.85rem;
    font-weight: 700;
}

.form-select {
    width: 100%;
    padding: 0.45rem 0.75rem;
    border-radius: 6px;
    border: 1px solid var(--card-border);
    background-color: rgba(13, 15, 20, 0.5);
    color: var(--text-primary);
    font-family: var(--font-primary);
    font-size: 0.85rem;
    cursor: pointer;
    outline: none;
    transition: all 0.2s ease;
}

.light-theme .form-select {
    background-color: white;
}

.form-select:focus {
    border-color: var(--secondary-color);
    box-shadow: 0 0 8px rgba(0,255,255,0.2);
}

.slider-row {
    grid-template-columns: 1.3fr 2.2fr 0.5fr;
    text-align: right;
}

.slider-row input[type="range"] {
    width: 100%;
    cursor: pointer;
    accent-color: var(--primary-color);
}

.preview-voice-btn {
    padding: 0.55rem 0.85rem;
    border-radius: 8px;
    border: 1px solid var(--card-border);
    background-color: var(--btn-bg);
    color: var(--text-primary);
    cursor: pointer;
    font-size: 0.8rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.preview-voice-btn:hover {
    background-color: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(255, 51, 102, 0.3);
}

.preview-voice-btn i {
    color: var(--secondary-color);
    transition: color 0.2s ease;
}

.preview-voice-btn:hover i {
    color: white;
}

/* Keyframes Animations */
@keyframes pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(255, 51, 102, 0.7);
    }
    70% {
        box-shadow: 0 0 0 10px rgba(255, 51, 102, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(255, 51, 102, 0);
    }
}

@keyframes modalFadeIn {
    from {
        opacity: 0;
        transform: scale(0.9) translateY(20px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

/* Responsive Adaptation (Desktop to Tablet to Phone) */
@media (max-width: 1024px) {
    .cover-layout {
        grid-template-columns: 1fr;
    }
    .cover-main {
        padding: 2.5rem 2rem;
        align-items: center;
        text-align: center;
    }
    .cover-illustration {
        margin-bottom: 2rem;
    }
}

@media (max-width: 768px) {
    .app-header {
        padding: 0 1rem;
    }
    .header-title {
        display: none; /* Hide mid-title on mobile */
    }
    .manga-grid {
        padding: 1rem;
        gap: 1.5rem;
    }
    .manga-panel {
        flex-direction: column;
    }
    .panel-img-container {
        width: 100%;
        border-right: none;
        border-bottom: 3px solid var(--border-color);
        aspect-ratio: 16 / 10;
    }
    .panel-dialogue-box {
        width: 100%;
        padding: 1.25rem;
    }
    .characters-grid {
        grid-template-columns: 1fr;
    }
    .voice-picker-row {
        grid-template-columns: 1fr;
        gap: 0.25rem;
    }
    .slider-row {
        grid-template-columns: 1fr 4fr 1fr;
    }
}