/* ===================================
   涓滅�钃濇ˉ鍛ㄦ姤鍔╂墜 - 鏍峰紡琛?
   浣跨敤Inter瀛椾綋 + 钃濈传娓愬彉閰嶈壊
   =================================== */

/* 瀵煎叆瀛椾綋 - 浣跨敤鍥藉唴CDN鎴栫郴缁熷洖閫€ */
@import url('https://fonts.loli.net/css2?family=Inter:wght@400;500;600;700&family=Noto+Sans+SC:wght@400;500;600;700&display=swap');

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

:root {
    /* 钃濈传娓愬彉閰嶈壊鏂规� */
    --color-primary: #3b82f6;
    --color-primary-light: #60a5fa;
    --color-primary-dark: #2563eb;
    --color-secondary: #8b5cf6;
    --color-accent: #a78bfa;

    /* 鑳屾櫙鑹?*/
    --color-bg-primary: #0a0e1a;
    --color-bg-secondary: #12162b;
    --color-bg-tertiary: #1a1f3a;

    /* 鏂囧瓧鑹?*/
    --color-text-primary: #f0f0f5;
    --color-text-secondary: #b8b8c8;
    --color-text-muted: #7a7a8a;

    /* 鍔熻兘鑹?*/
    --color-success: #10b981;
    --color-error: #ef4444;
    --color-warning: #f59e0b;

    /* 鐜荤拑鎷熸€?*/
    --glass-bg: rgba(255, 255, 255, 0.08);
    --glass-border: rgba(255, 255, 255, 0.15);
    --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.5);

    /* 闂磋窛 */
    --spacing-xs: 0.5rem;
    --spacing-sm: 0.75rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;

    /* 鍦嗚� */
    --radius-sm: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;

    /* 杩囨浮 */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);

    /* 瀛椾綋 */
    --font-family: 'Inter', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Microsoft YaHei', sans-serif;
}

body {
    font-family: var(--font-family);
    color: var(--color-text-primary);
    line-height: 1.6;
    overflow: hidden;
    min-height: 100vh;
    position: relative;

    /* Bing姣忔棩澹佺焊 + 娣辫壊閬�僵 */
    background-image:
        linear-gradient(135deg, rgba(10, 14, 26, 0.70) 0%, rgba(26, 31, 58, 0.70) 100%),
        url('https://api.dujin.org/bing/1920.php');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    background-repeat: no-repeat;
}

/* 钃濈传鑹茶皟鑹插眰 */
body::after {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.08) 0%, rgba(139, 92, 246, 0.08) 100%);
    pointer-events: none;
    z-index: 0;
}

/* 鑳屾櫙瑁呴グ - 钃濈传鍏夌悆 */
.bg-decoration {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    z-index: 0;
    pointer-events: none;
}

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(120px);
    opacity: 0.25;
    animation: float 25s ease-in-out infinite;
}

.orb-1 {
    width: 600px;
    height: 600px;
    top: -300px;
    left: -300px;
    background: radial-gradient(circle, #3b82f6 0%, transparent 70%);
    animation-delay: 0s;
}

.orb-2 {
    width: 500px;
    height: 500px;
    bottom: -250px;
    right: -250px;
    background: radial-gradient(circle, #8b5cf6 0%, transparent 70%);
    animation-delay: 8s;
}

.orb-3 {
    width: 450px;
    height: 450px;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: radial-gradient(circle, #a78bfa 0%, transparent 70%);
    animation-delay: 16s;
}

@keyframes float {

    0%,
    100% {
        transform: translate(0, 0) scale(1);
    }

    25% {
        transform: translate(40px, -40px) scale(1.1);
    }

    50% {
        transform: translate(-20px, 30px) scale(0.9);
    }

    75% {
        transform: translate(30px, 20px) scale(1.05);
    }
}

/* 閫氱敤瀹瑰櫒 */
.container {
    position: relative;
    z-index: 1;
    width: 100%;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
}

.glass-panel {
    background: var(--glass-bg);
    backdrop-filter: blur(24px) saturate(180%);
    -webkit-backdrop-filter: blur(24px) saturate(180%);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    box-shadow: var(--glass-shadow);
}

.hidden {
    display: none !important;
}

/* 鐧诲綍鐣岄潰 */
.login-box {
    width: 100%;
    max-width: 460px;
    padding: var(--spacing-2xl);
    animation: fadeInUp 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.logo-section {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.logo-icon {
    display: inline-block;
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
    animation: pulseGlow 2.5s ease-in-out infinite;
    filter: drop-shadow(0 0 20px rgba(59, 130, 246, 0.6));
}

@keyframes pulseGlow {

    0%,
    100% {
        opacity: 1;
        transform: scale(1);
        filter: drop-shadow(0 0 20px rgba(59, 130, 246, 0.6));
    }

    50% {
        opacity: 0.8;
        transform: scale(1.05);
        filter: drop-shadow(0 0 30px rgba(59, 130, 246, 0.9));
    }
}

.logo-title {
    font-size: 2.25rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-xs);
    letter-spacing: -0.02em;
}

.logo-subtitle {
    color: var(--color-text-secondary);
    font-size: 1rem;
    font-weight: 500;
}

.login-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.form-label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text-secondary);
    letter-spacing: 0.02em;
}

.form-input {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-lg);
    background: rgba(255, 255, 255, 0.06);
    border: 1.5px solid rgba(255, 255, 255, 0.12);
    border-radius: var(--radius-md);
    color: var(--color-text-primary);
    font-size: 0.95rem;
    font-family: var(--font-family);
    transition: all var(--transition-base);
}

.form-input:focus {
    outline: none;
    border-color: var(--color-primary);
    background: rgba(255, 255, 255, 0.1);
    box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.15), 0 4px 12px rgba(0, 0, 0, 0.3);
    transform: translateY(-1px);
}

.form-input::placeholder {
    color: var(--color-text-muted);
}

.error-message {
    padding: var(--spacing-sm) var(--spacing-md);
    background: rgba(239, 68, 68, 0.15);
    border: 1px solid rgba(239, 68, 68, 0.4);
    border-radius: var(--radius-sm);
    color: var(--color-error);
    font-size: 0.875rem;
    animation: shake 0.4s ease;
}

@keyframes shake {

    0%,
    100% {
        transform: translateX(0);
    }

    25% {
        transform: translateX(-8px);
    }

    75% {
        transform: translateX(8px);
    }
}

.btn {
    padding: var(--spacing-md) var(--spacing-xl);
    border: none;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    font-family: var(--font-family);
    cursor: pointer;
    transition: all var(--transition-base);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    color: white;
    box-shadow: 0 4px 20px rgba(59, 130, 246, 0.4);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 25px rgba(59, 130, 246, 0.6);
}

.btn-primary:active {
    transform: translateY(-1px);
}

.btn-primary:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.login-hint {
    text-align: center;
    font-size: 0.875rem;
    color: var(--color-text-muted);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
}

/* 鑱婂ぉ鐣岄潰 */
.chat-box {
    width: 100%;
    max-width: 1200px;
    height: 90vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    animation: fadeInUp 0.5s ease;
}

.chat-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-lg) var(--spacing-xl);
    border-bottom: 1px solid var(--glass-border);
    background: rgba(255, 255, 255, 0.03);
}

.header-left {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.header-icon {
    width: 52px;
    height: 52px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    border-radius: var(--radius-lg);
    color: white;
    box-shadow: 0 4px 16px rgba(59, 130, 246, 0.4);
}

.header-info {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.header-title {
    font-size: 1.375rem;
    font-weight: 700;
    letter-spacing: -0.01em;
}

.header-status {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.status-dot {
    width: 8px;
    height: 8px;
    background: var(--color-success);
    border-radius: 50%;
    animation: statusPulse 2s ease-in-out infinite;
    box-shadow: 0 0 8px var(--color-success);
}

@keyframes statusPulse {

    0%,
    100% {
        opacity: 1;
        transform: scale(1);
    }

    50% {
        opacity: 0.6;
        transform: scale(1.2);
    }
}

.header-actions {
    display: flex;
    gap: var(--spacing-sm);
}

.icon-btn {
    width: 42px;
    height: 42px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: all var(--transition-base);
}

.icon-btn:hover {
    background: rgba(255, 255, 255, 0.12);
    color: var(--color-text-primary);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

/* 娑堟伅鍖哄煙 */
.messages-container {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-xl);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    scroll-behavior: smooth;
}

.messages-container::-webkit-scrollbar {
    width: 10px;
}

.messages-container::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.02);
    border-radius: var(--radius-sm);
    margin: 8px 0;
}

.messages-container::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, var(--color-primary), var(--color-secondary));
    border-radius: var(--radius-sm);
    border: 2px solid rgba(255, 255, 255, 0.05);
}

.messages-container::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(180deg, var(--color-primary-light), var(--color-secondary));
}

/* 娆㈣繋娑堟伅 */
.welcome-message {
    text-align: left;
    padding: var(--spacing-2xl);
    color: var(--color-text-secondary);
    max-width: 900px;
    margin: 0 auto;
    background: rgba(59, 130, 246, 0.08);
    border: 1px solid rgba(59, 130, 246, 0.25);
    border-radius: var(--radius-lg);
    animation: fadeInScale 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes fadeInScale {
    from {
        opacity: 0;
        transform: scale(0.95);
    }

    to {
        opacity: 1;
        transform: scale(1);
    }
}

.welcome-icon {
    font-size: 3.5rem;
    margin-bottom: var(--spacing-md);
    text-align: center;
    animation: bounce 2s ease-in-out infinite;
}

@keyframes bounce {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-10px);
    }
}

.welcome-message h3 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-md);
    text-align: center;
    background: linear-gradient(135deg, var(--color-primary-light), var(--color-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.welcome-content {
    line-height: 1.8;
}

.welcome-content p {
    font-size: 1rem;
    margin-bottom: var(--spacing-md);
}

.welcome-content .warning {
    color: var(--color-warning);
    background: rgba(245, 158, 11, 0.12);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--color-warning);
    margin: var(--spacing-lg) 0;
    box-shadow: 0 2px 8px rgba(245, 158, 11, 0.2);
}

.welcome-content .tip {
    color: var(--color-primary-light);
    margin-bottom: var(--spacing-lg);
}

.welcome-content .commands {
    background: rgba(255, 255, 255, 0.04);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    margin: var(--spacing-xl) 0;
    border: 1px solid rgba(255, 255, 255, 0.08);
}

.welcome-content .commands>p {
    font-weight: 600;
    font-size: 1.1rem;
    text-align: center;
    margin-bottom: var(--spacing-lg);
    color: var(--color-text-primary);
}

.command-item {
    margin: var(--spacing-lg) 0;
    padding: var(--spacing-lg);
    background: rgba(59, 130, 246, 0.1);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--color-primary);
    transition: all var(--transition-base);
}

.command-item:hover {
    background: rgba(59, 130, 246, 0.18);
    transform: translateX(4px);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.25);
}

.command-title {
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-sm);
}

.command-desc {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    margin-bottom: var(--spacing-xs);
}

.command-example {
    color: var(--color-accent);
    font-size: 0.95rem;
    font-style: italic;
    padding: var(--spacing-sm) var(--spacing-md);
    background: rgba(139, 92, 246, 0.12);
    border-radius: var(--radius-sm);
    margin-top: var(--spacing-sm);
}

.welcome-content .action-hint {
    text-align: center;
    font-size: 1.15rem;
    color: var(--color-primary-light);
    margin-top: var(--spacing-xl);
    font-weight: 600;
    animation: pulse 2s ease-in-out infinite;
}

/* 娑堟伅姘旀场 */
.message {
    display: flex;
    animation: messageSlideIn 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.user-message {
    justify-content: flex-end;
}

.assistant-message {
    justify-content: flex-start;
}

.message-content {
    max-width: 70%;
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-lg);
    font-size: 0.95rem;
    line-height: 1.7;
    word-wrap: break-word;
    white-space: pre-wrap;
    overflow-wrap: break-word;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.user-message .message-content {
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    color: white;
    border-bottom-right-radius: 0.375rem;
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.4);
}

.assistant-message .message-content {
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid var(--glass-border);
    color: var(--color-text-primary);
    border-bottom-left-radius: 0.375rem;
}

.streaming .message-content {
    position: relative;
}

.streaming .message-content::after {
    content: '▋';
    animation: blink 1s step-end infinite;
    margin-left: 3px;
    color: var(--color-primary);
}

/* 鎵撳瓧鎸囩ず鍣?*/
.typing-indicator .message-content {
    display: flex;
    gap: 0.5rem;
    padding: var(--spacing-md) var(--spacing-xl);
}

.typing-indicator .dot {
    width: 10px;
    height: 10px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    border-radius: 50%;
    animation: typingBounce 1.4s ease-in-out infinite;
    box-shadow: 0 0 8px rgba(59, 130, 246, 0.5);
}

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

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

@keyframes typingBounce {

    0%,
    60%,
    100% {
        transform: translateY(0);
    }

    30% {
        transform: translateY(-12px);
    }
}

/* 杈撳叆鍖哄煙 */
.input-area {
    padding: var(--spacing-lg) var(--spacing-xl);
    border-top: 1px solid var(--glass-border);
    background: rgba(255, 255, 255, 0.02);
}

.input-wrapper {
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-end;
}

.message-input {
    flex: 1;
    min-height: 52px;
    max-height: 150px;
    padding: var(--spacing-md) var(--spacing-lg);
    background: rgba(255, 255, 255, 0.06);
    border: 1.5px solid rgba(255, 255, 255, 0.12);
    border-radius: var(--radius-lg);
    color: var(--color-text-primary);
    font-size: 0.95rem;
    font-family: var(--font-family);
    line-height: 1.6;
    resize: none;
    transition: all var(--transition-base);
}

.message-input:focus {
    outline: none;
    border-color: var(--color-primary);
    background: rgba(255, 255, 255, 0.1);
    box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.15), 0 4px 16px rgba(0, 0, 0, 0.3);
}

.message-input::placeholder {
    color: var(--color-text-muted);
}

.input-actions {
    display: flex;
    gap: var(--spacing-sm);
}

.btn-send,
.btn-stop {
    padding: var(--spacing-md) var(--spacing-xl);
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    color: white;
    box-shadow: 0 4px 16px rgba(59, 130, 246, 0.4);
}

.btn-send:hover,
.btn-stop:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(59, 130, 246, 0.5);
}

.btn-stop {
    background: linear-gradient(135deg, var(--color-error), #dc2626);
    box-shadow: 0 4px 16px rgba(239, 68, 68, 0.4);
}

.btn-stop:hover {
    box-shadow: 0 6px 20px rgba(239, 68, 68, 0.5);
}

/* 閿欒�鎻愮ず */
.error-toast {
    position: fixed;
    top: var(--spacing-xl);
    right: var(--spacing-xl);
    padding: var(--spacing-lg) var(--spacing-xl);
    background: rgba(239, 68, 68, 0.95);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-lg);
    color: white;
    font-size: 0.95rem;
    font-weight: 500;
    box-shadow: 0 8px 32px rgba(239, 68, 68, 0.4);
    z-index: 1000;
    opacity: 0;
    transform: translateY(-30px) scale(0.9);
    transition: all var(--transition-base);
}

.error-toast.show {
    opacity: 1;
    transform: translateY(0) scale(1);
}

/* 鍔ㄧ敾 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes messageSlideIn {
    from {
        opacity: 0;
        transform: translateX(-20px) scale(0.95);
    }

    to {
        opacity: 1;
        transform: translateX(0) scale(1);
    }
}

@keyframes pulse {

    0%,
    100% {
        opacity: 1;
        transform: scale(1);
    }

    50% {
        opacity: 0.7;
        transform: scale(1.05);
    }
}

@keyframes blink {

    0%,
    50% {
        opacity: 1;
    }

    51%,
    100% {
        opacity: 0;
    }
}

/* 鍝嶅簲寮忚�璁?*/
@media (max-width: 768px) {
    .container {
        padding: var(--spacing-md);
    }

    .login-box {
        padding: var(--spacing-xl);
    }

    .chat-box {
        height: 95vh;
        border-radius: var(--radius-lg);
    }

    .chat-header {
        padding: var(--spacing-md) var(--spacing-lg);
    }

    .header-icon {
        width: 44px;
        height: 44px;
    }

    .header-title {
        font-size: 1.2rem;
    }

    .messages-container {
        padding: var(--spacing-lg);
    }

    .message-content {
        max-width: 85%;
    }

    .welcome-message {
        padding: var(--spacing-lg);
    }

    .command-item {
        padding: var(--spacing-md);
    }

    .input-area {
        padding: var(--spacing-md) var(--spacing-lg);
    }

    .input-wrapper {
        flex-direction: column;
        align-items: stretch;
    }

    .btn-send,
    .btn-stop {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .logo-title {
        font-size: 1.75rem;
    }

    .message-content {
        max-width: 90%;
        font-size: 0.9rem;
    }

    .error-toast {
        right: var(--spacing-md);
        left: var(--spacing-md);
    }
}

/* 开场白弹窗样式 */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal.hidden {
    display: none;
}

.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.75);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    z-index: 2001;
}

.modal-content {
    position: relative;
    z-index: 2002;
    width: 90%;
    max-width: 700px;
    max-height: 85vh;
    overflow-y: auto;
    animation: modalSlideIn 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-50px) scale(0.9);
    }

    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.modal-header {
    padding: var(--spacing-xl);
    border-bottom: 1px solid var(--glass-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-header h2 {
    font-size: 1.75rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--color-primary-light), var(--color-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin: 0;
}

.modal-close {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
    font-size: 1.75rem;
    cursor: pointer;
    transition: all var(--transition-base);
}

.modal-close:hover {
    background: rgba(255, 255, 255, 0.12);
    color: var(--color-text-primary);
    transform: rotate(90deg);
}

.modal-body {
    padding: var(--spacing-xl);
    color: var(--color-text-secondary);
    line-height: 1.8;
}

.modal-body p {
    margin-bottom: var(--spacing-md);
}

.modal-warning {
    color: var(--color-warning) !important;
    background: rgba(245, 158, 11, 0.12);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--color-warning);
    margin: var(--spacing-lg) 0;
}

.modal-tip {
    color: var(--color-primary-light) !important;
    margin-bottom: var(--spacing-lg);
}

.modal-commands {
    background: rgba(255, 255, 255, 0.04);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    margin: var(--spacing-lg) 0;
    border: 1px solid rgba(255, 255, 255, 0.08);
}

.modal-commands>p {
    font-weight: 600;
    font-size: 1.05rem;
    text-align: center;
    margin-bottom: var(--spacing-lg);
    color: var(--color-text-primary);
}

.modal-command-item {
    margin: var(--spacing-md) 0;
    padding: var(--spacing-md);
    background: rgba(59, 130, 246, 0.1);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--color-primary);
    transition: all var(--transition-base);
}

.modal-command-item:hover {
    background: rgba(59, 130, 246, 0.18);
    transform: translateX(4px);
}

.modal-command-title {
    font-weight: 700;
    font-size: 1rem;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-xs);
}

.modal-command-desc {
    color: var(--color-text-secondary);
    font-size: 0.9rem;
    margin-bottom: var(--spacing-xs);
}

.modal-command-example {
    color: var(--color-accent);
    font-size: 0.9rem;
    font-style: italic;
    padding: var(--spacing-sm);
    background: rgba(139, 92, 246, 0.12);
    border-radius: var(--radius-sm);
    margin-top: var(--spacing-xs);
}

.modal-action-hint {
    text-align: center;
    font-size: 1.1rem;
    color: var(--color-primary-light) !important;
    margin-top: var(--spacing-lg);
    font-weight: 600;
}

.modal-footer {
    padding: var(--spacing-lg) var(--spacing-xl);
    border-top: 1px solid var(--glass-border);
    display: flex;
    justify-content: center;
}

.modal-footer .btn {
    min-width: 150px;
}


/* 开场白弹窗样式 */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.75);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    z-index: 2001;
}

.modal-content {
    position: relative;
    z-index: 2002;
    width: 90%;
    max-width: 700px;
    max-height: 85vh;
    overflow-y: auto;
    animation: modalSlideIn 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-50px) scale(0.9);
    }

    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.modal-header {
    padding: var(--spacing-xl);
    border-bottom: 1px solid var(--glass-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-header h2 {
    font-size: 1.75rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--color-primary-light), var(--color-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin: 0;
}

.modal-close {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
    font-size: 1.75rem;
    line-height: 1;
    cursor: pointer;
    transition: all var(--transition-base);
}

.modal-close:hover {
    background: rgba(255, 255, 255, 0.12);
    color: var(--color-text-primary);
    transform: rotate(90deg);
}

.modal-body {
    padding: var(--spacing-xl);
    color: var(--color-text-secondary);
    line-height: 1.8;
}

.modal-body p {
    margin-bottom: var(--spacing-md);
}

.modal-warning {
    color: var(--color-warning) !important;
    background: rgba(245, 158, 11, 0.12);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--color-warning);
    margin: var(--spacing-lg) 0 !important;
}

.modal-tip {
    color: var(--color-primary-light) !important;
    margin-bottom: var(--spacing-lg) !important;
}

.modal-commands {
    background: rgba(255, 255, 255, 0.04);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    margin: var(--spacing-lg) 0;
    border: 1px solid rgba(255, 255, 255, 0.08);
}

.modal-commands>p {
    font-weight: 600;
    font-size: 1.05rem;
    text-align: center;
    margin-bottom: var(--spacing-lg) !important;
    color: var(--color-text-primary);
}

.modal-command-item {
    margin: var(--spacing-md) 0;
    padding: var(--spacing-md);
    background: rgba(59, 130, 246, 0.1);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--color-primary);
    transition: all var(--transition-base);
}

.modal-command-item:hover {
    background: rgba(59, 130, 246, 0.18);
    transform: translateX(4px);
}

.modal-command-title {
    font-weight: 700;
    font-size: 1rem;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-xs);
}

.modal-command-desc {
    color: var(--color-text-secondary);
    font-size: 0.9rem;
    margin-bottom: var(--spacing-xs);
}

.modal-command-example {
    color: var(--color-accent);
    font-size: 0.9rem;
    font-style: italic;
    padding: var(--spacing-sm);
    background: rgba(139, 92, 246, 0.12);
    border-radius: var(--radius-sm);
    margin-top: var(--spacing-xs);
}

.modal-action-hint {
    text-align: center;
    font-size: 1.1rem;
    color: var(--color-primary-light) !important;
    margin-top: var(--spacing-lg) !important;
    font-weight: 600;
}

.modal-footer {
    padding: var(--spacing-lg) var(--spacing-xl);
    border-top: 1px solid var(--glass-border);
    display: flex;
    justify-content: center;
}

.modal-footer .btn {
    min-width: 150px;
}

/* ========================================
   指令按钮和抽屉式输入框
   ======================================== */

/* 指令按钮区域 */
.action-buttons {
    padding: var(--spacing-xl);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    border-top: 1px solid var(--glass-border);
    background: rgba(255, 255, 255, 0.02);
}

/* 单个指令按钮 */
.action-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    padding: var(--spacing-lg) var(--spacing-xl);
    background: rgba(255, 255, 255, 0.06);
    border: 1.5px solid var(--glass-border);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-base);
    text-align: left;
    color: var(--color-text-primary);
}

.action-btn:hover {
    background: rgba(255, 255, 255, 0.12);
    border-color: var(--color-primary);
    transform: translateX(8px);
    box-shadow: 0 4px 16px rgba(59, 130, 246, 0.3);
}

/* 按钮图标 */
.action-btn-icon {
    font-size: 2.5rem;
    flex-shrink: 0;
    line-height: 1;
}

/* 按钮内容 */
.action-btn-content {
    flex: 1;
}

.action-btn-title {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-xs);
}

.action-btn-desc {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
}

/* 特殊按钮样式 */
.action-btn-fast {
    border-left: 4px solid #ff6b6b;
}

.action-btn-fast:hover {
    border-color: #ff6b6b;
    box-shadow: 0 4px 16px rgba(255, 107, 107, 0.3);
}

.action-btn-normal {
    border-left: 4px solid var(--color-primary);
}

.action-btn-update {
    border-left: 4px solid var(--color-accent);
}

/* 抽屉式输入框 */
.input-drawer {
    position: fixed;
    bottom: 0;
    right: 0;
    width: 100%;
    max-width: 600px;
    transform: translateX(100%);
    transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
    box-shadow: -4px 0 16px rgba(0, 0, 0, 0.3);
    z-index: 100;
}

.input-drawer.open {
    transform: translateX(0);
}

.input-drawer.hidden {
    display: none;
}

/* 关闭按钮 */
.drawer-close {
    position: absolute;
    top: var(--spacing-sm);
    left: var(--spacing-sm);
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    border: none;
    border-radius: 50%;
    color: var(--color-text-secondary);
    font-size: 1.75rem;
    line-height: 1;
    cursor: pointer;
    transition: all var(--transition-base);
    z-index: 10;
}

.drawer-close:hover {
    background: rgba(255, 255, 255, 0.2);
    color: var(--color-text-primary);
    transform: rotate(90deg);
}

/* 抽屉中的输入区域调整 */
.input-drawer .input-area {
    border-top: none;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .input-drawer {
        max-width: 100%;
    }

    .action-btn {
        padding: var(--spacing-md) var(--spacing-lg);
        gap: var(--spacing-md);
    }

    .action-btn-icon {
        font-size: 2rem;
    }

    .action-btn-title {
        font-size: 1rem;
    }

    .action-btn-desc {
        font-size: 0.8rem;
    }
}

/* ========================================
   视图切换与卡片选择样式
   ======================================== */

/* 应用容器 */
#app-container {
    position: relative;
    width: 100%;
    max-width: 1200px;
    height: 90vh;
    margin: 0 auto;
    overflow: hidden;
    /* 隐藏溢出部分，实现滑动效果 */
}

/* 视图面板通用样式 */
.view-panel {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.5s ease;
    padding: var(--spacing-md);
    display: flex;
    justify-content: center;
    align-items: center;
}

/* 视图状态 */
.view-panel.active {
    transform: translateX(0);
    opacity: 1;
    z-index: 10;
    pointer-events: auto;
}

.view-panel.hidden-right {
    transform: translateX(100%);
    opacity: 0;
    z-index: 0;
    pointer-events: none;
}

.view-panel.hidden-left {
    transform: translateX(-100%);
    opacity: 0;
    z-index: 0;
    pointer-events: none;
}

/* 选择视图容器 */
.selection-container {
    width: 100%;
    max-width: 900px;
    padding: var(--spacing-2xl);
    display: flex;
    flex-direction: column;
    align-items: center;
}

.selection-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.header-icon-lg {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
    animation: wave 2s infinite;
    display: inline-block;
}

@keyframes wave {

    0%,
    100% {
        transform: rotate(0deg);
    }

    25% {
        transform: rotate(15deg);
    }

    75% {
        transform: rotate(-15deg);
    }
}

.selection-header h2 {
    font-size: 2rem;
    margin-bottom: var(--spacing-sm);
    background: linear-gradient(135deg, var(--color-primary-light), var(--color-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.selection-header p {
    color: var(--color-text-secondary);
    font-size: 1.1rem;
}

/* 卡片容器 */
.cards-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-xl);
    width: 100%;
    margin-bottom: var(--spacing-xl);
}

/* 选择卡片 */
.selection-card {
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 24px;
    /* 更大的 R 角 */
    padding: var(--spacing-xl);
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    min-height: 220px;
    backdrop-filter: blur(10px);
    /* 增强毛玻璃效果 */
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

.selection-card:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: var(--color-primary-light);
    transform: translateY(-5px);
    box-shadow: 0 20px 40px -5px rgba(0, 0, 0, 0.2), 0 10px 20px -5px rgba(59, 130, 246, 0.3);
}

.selection-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.1), transparent);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.selection-card:hover::before {
    opacity: 1;
}

.card-icon {
    margin-bottom: var(--spacing-lg);
    background: rgba(255, 255, 255, 0.1);
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 20px;
    /* 图标背景也用圆角矩形，呼应整体 */
    transition: transform 0.3s ease, background-color 0.3s ease;
    color: rgba(255, 255, 255, 0.9);
}

.selection-card:hover .card-icon {
    transform: scale(1.1) rotate(5deg);
    background: var(--color-primary);
    color: white;
    box-shadow: 0 0 20px rgba(59, 130, 246, 0.5);
}

.card-content h3 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-primary);
}

.card-content p {
    font-size: 0.95rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

.card-arrow {
    margin-top: auto;
    align-self: flex-end;
    color: var(--color-primary);
    opacity: 0;
    transform: translateX(-10px);
    transition: all 0.3s ease;
}

.selection-card:hover .card-arrow {
    opacity: 1;
    transform: translateX(0);
}

/* 底部按钮 */
.selection-footer {
    margin-top: var(--spacing-lg);
}

.text-btn {
    background: none;
    border: none;
    color: var(--color-text-muted);
    cursor: pointer;
    font-size: 0.9rem;
    padding: var(--spacing-sm) var(--spacing-md);
    transition: color 0.3s ease;
}

.text-btn:hover {
    color: var(--color-text-primary);
    text-decoration: underline;
}

/* 返回按钮 */
#back-to-selection {
    margin-right: var(--spacing-md);
    color: var(--color-text-secondary);
}

#back-to-selection:hover {
    color: var(--color-primary);
    background: rgba(255, 255, 255, 0.1);
}

/* 移动端适配 */
@media (max-width: 768px) {
    #app-container {
        height: 100vh;
        border-radius: 0;
    }

    .selection-container {
        padding: var(--spacing-lg);
        height: 100%;
        justify-content: center;
    }

    .cards-container {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }

    .selection-card {
        min-height: auto;
        flex-direction: row;
        align-items: center;
        padding: var(--spacing-lg);
    }

    .card-icon {
        margin-bottom: 0;
        margin-right: var(--spacing-lg);
        width: 48px;
        height: 48px;
        font-size: 1.5rem;
    }

    .card-arrow {
        margin-top: 0;
        margin-left: auto;
        opacity: 1;
        /* 移动端始终显示箭头 */
        transform: none;
    }
}