/* ===== CSS Variables ===== */
:root {
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-tertiary: #1a1a24;
    --bg-card: rgba(26, 26, 36, 0.8);
    --bg-glass: rgba(255, 255, 255, 0.03);
    
    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.7);
    --text-muted: rgba(255, 255, 255, 0.4);
    
    --accent-blue: #3b82f6;
    --accent-blue-glow: rgba(59, 130, 246, 0.4);
    --accent-green: #10b981;
    --accent-green-glow: rgba(16, 185, 129, 0.4);
    --accent-purple: #8b5cf6;
    --accent-orange: #f59e0b;
    --accent-red: #ef4444;
    
    --border-color: rgba(255, 255, 255, 0.08);
    --border-glow: rgba(255, 255, 255, 0.15);
    
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 16px 64px rgba(0, 0, 0, 0.5);
    
    --font-sans: 'Noto Sans JP', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-serif: 'Noto Serif JP', 'Georgia', serif;
    --font-mono: 'JetBrains Mono', monospace;
}

/* ===== Light Theme Variables ===== */
[data-theme="light"] {
    --bg-primary: #f5f7fa;
    --bg-secondary: #ffffff;
    --bg-tertiary: #e8ecf1;
    --bg-card: rgba(255, 255, 255, 0.9);
    --bg-glass: rgba(0, 0, 0, 0.03);
    
    --text-primary: #1a1a2e;
    --text-secondary: rgba(26, 26, 46, 0.7);
    --text-muted: rgba(26, 26, 46, 0.5);
    
    --border-color: rgba(0, 0, 0, 0.08);
    --border-glow: rgba(0, 0, 0, 0.15);
    
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 16px 64px rgba(0, 0, 0, 0.16);
}

/* ===== Reset & Base ===== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
    transition: background 0.3s ease, color 0.3s ease;
}

/* ===== Background Animation ===== */
.bg-animation {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    overflow: hidden;
    z-index: 0;
}

.orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.5;
    animation: float 20s infinite ease-in-out;
}

[data-theme="light"] .orb {
    opacity: 0.3;
}

.orb-1 {
    width: 600px;
    height: 600px;
    background: var(--accent-blue);
    top: -200px;
    left: -200px;
    animation-delay: 0s;
}

.orb-2 {
    width: 500px;
    height: 500px;
    background: var(--accent-purple);
    bottom: -150px;
    right: -150px;
    animation-delay: -7s;
}

.orb-3 {
    width: 400px;
    height: 400px;
    background: var(--accent-green);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation-delay: -14s;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    25% { transform: translate(50px, -30px) scale(1.05); }
    50% { transform: translate(-20px, 40px) scale(0.95); }
    75% { transform: translate(-40px, -20px) scale(1.02); }
}

/* ===== Container ===== */
.container {
    position: relative;
    z-index: 1;
    max-width: 1400px;
    margin: 0 auto;
    padding: 24px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* ===== Header ===== */
header {
    text-align: center;
    padding: 24px 0;
}

.logo {
    margin-bottom: 12px;
}

.logo-icon {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    font-family: var(--font-mono);
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 8px;
}

.robot-left {
    padding: 6px 12px;
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
    border-radius: var(--radius-sm);
    color: white;
}

.vs {
    color: var(--text-muted);
    font-size: 12px;
}

.robot-right {
    padding: 6px 12px;
    background: linear-gradient(135deg, var(--accent-green), var(--accent-blue));
    border-radius: var(--radius-sm);
    color: white;
}

header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--text-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.subtitle {
    color: var(--text-secondary);
    font-size: 1rem;
    font-weight: 400;
    margin-top: 8px;
}

/* ===== Header Controls ===== */
.header-controls {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    margin-top: 16px;
}

.status-indicator {
    display: inline-flex;
    align-items: center;
    gap: 16px;
    padding: 8px 16px;
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    border-radius: 999px;
}

.status-item {
    display: flex;
    align-items: center;
    gap: 8px;
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--accent-orange);
    animation: pulse-dot 2s infinite;
}

.status-dot.online {
    background: var(--accent-green);
}

.status-dot.offline {
    background: var(--accent-red);
    animation: none;
}

@keyframes pulse-dot {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(0.8); }
}

.status-label {
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
}

.status-text {
    font-size: 12px;
    color: var(--text-muted);
    font-family: var(--font-mono);
}

/* ===== Theme Toggle ===== */
.theme-toggle {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s;
}

.theme-toggle:hover {
    background: var(--bg-tertiary);
    border-color: var(--accent-purple);
    color: var(--accent-purple);
}

/* ===== Main Content ===== */
.main-content {
    flex: 1;
    display: grid;
    grid-template-columns: 400px 1fr;
    gap: 24px;
    min-height: 0;
}

/* ===== Config Panel ===== */
.config-panel {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.agents-wrapper {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.agent-card {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    padding: 20px;
    transition: all 0.3s ease;
}

.agent-card.agent-a {
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    border-bottom: none;
}

.agent-card.agent-b {
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
    border-top: none;
}

.agent-card:hover {
    border-color: var(--border-glow);
}

.agent-card.agent-a:hover {
    box-shadow: 0 -4px 30px var(--accent-blue-glow);
}

.agent-card.agent-b:hover {
    box-shadow: 0 4px 30px var(--accent-green-glow);
}

.agent-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}

.agent-avatar {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 18px;
    color: white;
}

.agent-a .agent-avatar {
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
}

.agent-b .agent-avatar {
    background: linear-gradient(135deg, var(--accent-green), var(--accent-blue));
}

.agent-title {
    flex: 1;
}

.agent-title h3 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 4px;
}

.model-select {
    width: 100%;
    padding: 6px 10px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 12px;
    font-family: var(--font-mono);
    cursor: pointer;
    transition: all 0.2s;
}

.model-select:hover {
    border-color: var(--border-glow);
}

.model-select:focus {
    outline: none;
    border-color: var(--accent-blue);
}

.agent-fields {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.field-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.field-group label {
    font-size: 11px;
    font-weight: 500;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.field-group input,
.field-group select {
    padding: 10px 12px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 14px;
    transition: all 0.2s;
}

.field-group input:hover,
.field-group select:hover {
    border-color: var(--border-glow);
}

.field-group input:focus,
.field-group select:focus {
    outline: none;
    border-color: var(--accent-blue);
    background: var(--bg-secondary);
}

.field-group input:disabled,
.field-group select:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* ===== Versus Divider ===== */
.versus-divider {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 0 20px;
    background: var(--bg-card);
    border-left: 1px solid var(--border-color);
    border-right: 1px solid var(--border-color);
}

.versus-line {
    flex: 1;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border-glow), transparent);
}

.versus-badge {
    padding: 4px 12px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 999px;
    font-size: 11px;
    font-weight: 700;
    color: var(--text-muted);
    letter-spacing: 0.1em;
}

/* ===== Dialog Settings ===== */
.dialog-settings {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 20px;
}

.preset-group {
    margin-bottom: 12px;
}

.preset-group select {
    width: 100%;
    padding: 10px 12px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 14px;
    cursor: pointer;
    transition: all 0.2s;
}

.preset-group select:hover {
    border-color: var(--border-glow);
}

.preset-group select:focus {
    outline: none;
    border-color: var(--accent-purple);
}

.topic-group {
    margin-bottom: 16px;
}

.topic-group input {
    width: 100%;
    padding: 12px 14px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 14px;
    transition: all 0.2s;
}

.topic-group input:focus {
    outline: none;
    border-color: var(--accent-purple);
}

.setting-group label {
    display: block;
    font-size: 11px;
    font-weight: 500;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 6px;
}

.settings-row {
    display: flex;
    gap: 12px;
    align-items: flex-end;
}

.settings-row .setting-group {
    flex: 1;
}

.settings-row input {
    width: 100%;
    padding: 10px 12px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 14px;
    font-family: var(--font-mono);
    transition: all 0.2s;
}

.settings-row input:focus {
    outline: none;
    border-color: var(--accent-blue);
}

.btn-icon {
    width: 42px;
    height: 42px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s;
}

.btn-icon:hover {
    background: var(--bg-secondary);
    border-color: var(--accent-purple);
    color: var(--accent-purple);
}

/* ===== Control Buttons ===== */
.control-buttons {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 10px 16px;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 13px;
    font-weight: 600;
    font-family: var(--font-sans);
    cursor: pointer;
    transition: all 0.2s;
}

.btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
    transform: none !important;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-green), #059669);
    color: white;
    flex: 1;
}

.btn-primary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px var(--accent-green-glow);
}

.btn-warning {
    background: linear-gradient(135deg, var(--accent-orange), #d97706);
    color: white;
}

.btn-warning:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(245, 158, 11, 0.3);
}

.btn-info {
    background: linear-gradient(135deg, var(--accent-blue), #2563eb);
    color: white;
}

.btn-info:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px var(--accent-blue-glow);
}

.btn-danger {
    background: linear-gradient(135deg, var(--accent-red), #dc2626);
    color: white;
}

.btn-danger:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(239, 68, 68, 0.3);
}

.btn-ghost {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
}

.btn-ghost:hover:not(:disabled) {
    background: var(--bg-glass);
    border-color: var(--border-glow);
}

.btn-secondary {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
}

.btn-secondary:hover:not(:disabled) {
    background: var(--bg-secondary);
    border-color: var(--accent-purple);
    color: var(--accent-purple);
}

/* ===== Chat Panel ===== */
.chat-panel {
    display: flex;
    flex-direction: column;
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    min-height: 0;
}

.chat-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
    gap: 12px;
}

.chat-header h2 {
    font-size: 16px;
    font-weight: 600;
}

.chat-header-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

.turn-badge {
    padding: 6px 12px;
    background: var(--bg-tertiary);
    border-radius: 999px;
    font-size: 12px;
    font-weight: 500;
    font-family: var(--font-mono);
    color: var(--text-secondary);
}

/* ===== Statistics ===== */
#statistics {
    display: flex;
    gap: 16px;
    font-size: 11px;
}

.stat-item {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.stat-label {
    color: var(--text-muted);
    font-weight: 500;
    text-transform: uppercase;
}

.stat-value {
    color: var(--text-secondary);
    font-family: var(--font-mono);
}

.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.message {
    max-width: 85%;
    animation: messageIn 0.3s ease;
}

@keyframes messageIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.message.agent-a,
.message.character-a {
    align-self: flex-start;
}

.message.agent-b,
.message.character-b {
    align-self: flex-end;
}

.message.system-message,
.message.system {
    align-self: center;
    max-width: 90%;
}

.message-content {
    padding: 14px 18px;
    border-radius: var(--radius-md);
    line-height: 1.6;
    font-size: 14px;
}

.message.agent-a .message-content,
.message.character-a .message-content {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.15), rgba(139, 92, 246, 0.1));
    border: 1px solid rgba(59, 130, 246, 0.2);
    border-radius: var(--radius-md) var(--radius-md) var(--radius-md) 4px;
}

.message.agent-b .message-content,
.message.character-b .message-content {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.15), rgba(59, 130, 246, 0.1));
    border: 1px solid rgba(16, 185, 129, 0.2);
    border-radius: var(--radius-md) var(--radius-md) 4px var(--radius-md);
}

/* ===== Story-specific Styles ===== */
.message.narrator .message-content {
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.1), rgba(245, 158, 11, 0.1));
    border: 1px solid rgba(139, 92, 246, 0.2);
    text-align: center;
    font-style: italic;
    color: var(--text-secondary);
}

.message.narrator {
    align-self: center;
    max-width: 90%;
}

.story-messages .message-content {
    font-family: var(--font-serif);
    line-height: 1.8;
}

.narration {
    color: var(--text-muted);
    font-style: italic;
}

.message.system-message .message-content,
.message.system .message-content {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    text-align: center;
    color: var(--text-secondary);
    font-size: 13px;
}

.message.error .message-content {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: var(--accent-red);
}

/* ===== Character Labels ===== */
.agent-label,
.character-label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 10px;
}

.agent-a .agent-label,
.character-a .character-label {
    color: var(--accent-blue);
}

.agent-b .agent-label,
.character-b .character-label {
    color: var(--accent-green);
}

.agent-label::before,
.character-label::before {
    content: '';
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.agent-a .agent-label::before,
.character-a .character-label::before {
    background: var(--accent-blue);
}

.agent-b .agent-label::before,
.character-b .character-label::before {
    background: var(--accent-green);
}

.message pre {
    background: var(--bg-primary);
    padding: 12px;
    border-radius: var(--radius-sm);
    overflow-x: auto;
    margin: 8px 0;
    font-family: var(--font-mono);
    font-size: 13px;
}

.message code {
    background: var(--bg-primary);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: var(--font-mono);
    font-size: 13px;
}

/* ===== Streaming Cursor ===== */
.streaming-cursor {
    display: inline-block;
    width: 2px;
    height: 1em;
    background: var(--accent-blue);
    margin-left: 2px;
    animation: blink 0.8s infinite;
    vertical-align: text-bottom;
}

.agent-b .streaming-cursor {
    background: var(--accent-green);
}

@keyframes blink {
    0%, 50% { opacity: 1; }
    51%, 100% { opacity: 0; }
}

.message.complete .streaming-cursor {
    display: none;
}

.loading .message-content::after {
    content: '';
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid var(--text-muted);
    border-top-color: transparent;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin-left: 8px;
    vertical-align: middle;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ===== Chat Footer ===== */
.chat-footer {
    padding: 12px 20px;
    border-top: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.status-indicator-footer {
    display: flex;
    align-items: center;
    gap: 10px;
}

.typing-indicator {
    display: none;
    gap: 4px;
}

.typing-indicator.active {
    display: flex;
}

.typing-indicator span {
    width: 6px;
    height: 6px;
    background: var(--text-muted);
    border-radius: 50%;
    animation: typing 1.4s infinite both;
}

.typing-indicator span:nth-child(2) { animation-delay: 0.2s; }
.typing-indicator span:nth-child(3) { animation-delay: 0.4s; }

@keyframes typing {
    0%, 60%, 100% { transform: translateY(0); }
    30% { transform: translateY(-4px); }
}

#status {
    font-size: 13px;
    color: var(--text-muted);
}

.keyboard-hint {
    font-size: 11px;
    color: var(--text-muted);
    display: flex;
    gap: 8px;
}

.keyboard-hint kbd {
    padding: 2px 6px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-family: var(--font-mono);
    font-size: 10px;
}

/* ===== Scrollbar ===== */
.chat-messages::-webkit-scrollbar {
    width: 6px;
}

.chat-messages::-webkit-scrollbar-track {
    background: transparent;
}

.chat-messages::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 3px;
}

.chat-messages::-webkit-scrollbar-thumb:hover {
    background: var(--border-glow);
}

/* ===== Status Badge Legacy Support ===== */
.status-badge {
    font-size: 12px;
    font-family: var(--font-mono);
}

.status-badge.online { color: var(--accent-green); }
.status-badge.offline { color: var(--accent-red); }
.status-badge.checking { color: var(--accent-orange); }

/* ===== Export Modal ===== */
.modal-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal-overlay.active {
    display: flex;
}

.modal {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 24px;
    max-width: 400px;
    width: 90%;
    box-shadow: var(--shadow-lg);
    animation: modalIn 0.2s ease;
}

@keyframes modalIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.modal h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.modal-buttons {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.modal-buttons .btn {
    width: 100%;
    justify-content: flex-start;
    padding: 14px 16px;
}

.modal-close {
    margin-top: 16px;
    width: 100%;
}

/* ===== Scenario & Scene Cards ===== */
.scenario-card,
.scene-card {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 16px;
}

.card-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
}

.card-icon {
    font-size: 20px;
}

.card-header h3 {
    font-size: 14px;
    font-weight: 600;
}

.scene-card textarea {
    width: 100%;
    padding: 10px 12px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 14px;
    font-family: var(--font-sans);
    resize: vertical;
    transition: all 0.2s;
}

.scene-card textarea:focus {
    outline: none;
    border-color: var(--accent-purple);
}

/* ===== Character Cards ===== */
.characters-wrapper {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.character-card {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    padding: 20px;
    transition: all 0.3s ease;
}

.character-card.character-a {
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    border-bottom: none;
}

.character-card.character-b {
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
    border-top: none;
}

.character-card:hover {
    border-color: var(--border-glow);
}

.character-card.character-a:hover {
    box-shadow: 0 -4px 30px var(--accent-blue-glow);
}

.character-card.character-b:hover {
    box-shadow: 0 4px 30px var(--accent-green-glow);
}

.character-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}

.character-avatar {
    width: 50px;
    height: 50px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
}

.character-a .character-avatar {
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
}

.character-b .character-avatar {
    background: linear-gradient(135deg, var(--accent-green), var(--accent-blue));
}

.character-title {
    flex: 1;
}

.name-input {
    width: 100%;
    padding: 6px 10px;
    background: transparent;
    border: none;
    border-bottom: 2px solid var(--border-color);
    color: var(--text-primary);
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 6px;
    transition: all 0.2s;
}

.name-input:focus {
    outline: none;
    border-bottom-color: var(--accent-purple);
}

.character-a .name-input:focus {
    border-bottom-color: var(--accent-blue);
}

.character-b .name-input:focus {
    border-bottom-color: var(--accent-green);
}

.character-fields {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

/* ===== Story Panel ===== */
.story-panel .chat-header h2 {
    font-family: var(--font-serif);
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .main-content {
        grid-template-columns: 1fr;
    }
    
    .config-panel {
        order: 1;
    }
    
    .chat-panel {
        order: 2;
        min-height: 500px;
    }
    
    .keyboard-hint {
        display: none;
    }
}

@media (max-width: 640px) {
    .container {
        padding: 16px;
    }
    
    header h1 {
        font-size: 1.75rem;
    }
    
    .header-controls {
        flex-wrap: wrap;
    }
    
    .control-buttons {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
    }
    
    .settings-row {
        flex-direction: column;
    }
    
    .btn-icon {
        width: 100%;
    }
    
    .chat-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .chat-header-right {
        width: 100%;
        justify-content: space-between;
    }
    
    #statistics {
        flex-direction: column;
        gap: 8px;
    }
}

/* ===== Genre Badge ===== */
.genre-badge {
    background: linear-gradient(135deg, #ec4899, #f43f5e);
    color: white;
    font-size: 0.65rem;
    padding: 2px 8px;
    border-radius: 20px;
    font-weight: 600;
    letter-spacing: 0.5px;
    margin-left: auto;
    white-space: nowrap;
}

[data-theme="light"] .genre-badge {
    background: linear-gradient(135deg, #db2777, #e11d48);
}

.card-header {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

/* ===== Scenario Card Improvements ===== */
.scenario-card select optgroup {
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-weight: 600;
    padding: 8px 0;
}

.scenario-card select option {
    padding: 8px 12px;
    background: var(--bg-tertiary);
}

#genre-select {
    background: linear-gradient(135deg, rgba(236, 72, 153, 0.1), rgba(244, 63, 94, 0.1));
    border: 1px solid rgba(236, 72, 153, 0.3);
}

#genre-select:focus {
    border-color: #ec4899;
    box-shadow: 0 0 0 3px rgba(236, 72, 153, 0.2);
}

/* ===== Love Heart Divider ===== */
.versus-badge {
    font-size: 1.5rem;
    animation: heartbeat 1.5s ease-in-out infinite;
}

@keyframes heartbeat {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

/* ===== Visual Novel Style Messages ===== */
.message.character-a .message-content,
.message.character-b .message-content {
    font-family: var(--font-sans);
    line-height: 1.9;
    letter-spacing: 0.02em;
}

/* キャラ名を目立たせる */
.message .character-label {
    display: block;
    font-weight: 700;
    font-size: 0.9rem;
    margin-bottom: 8px;
    padding-bottom: 6px;
    border-bottom: 2px solid currentColor;
    opacity: 0.9;
}

.message.character-a .character-label {
    color: #f472b6;
    border-color: rgba(244, 114, 182, 0.3);
}

.message.character-b .character-label {
    color: #60a5fa;
    border-color: rgba(96, 165, 250, 0.3);
}

[data-theme="light"] .message.character-a .character-label {
    color: #db2777;
}

[data-theme="light"] .message.character-b .character-label {
    color: #2563eb;
}

/* 台詞部分のスタイリング */
.message .streaming-text {
    display: block;
    font-size: 1.05rem;
}

/* ナレーター（シーン説明） */
.message.narrator .message-content {
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.1), rgba(168, 85, 247, 0.05));
    border-left: 3px solid #8b5cf6;
    padding: 16px 20px;
    font-style: italic;
    color: var(--text-secondary);
}