:root {
    --primary-light: #a7c7e7;
    --primary-medium: #7ba7d8;
    --primary-dark: #5a8cca;
    --text-primary: #2c3e50;
    --text-secondary: #546e7a;
    --card-bg: rgba(255, 255, 255, 0.85);
    --bg-blur: rgba(167, 199, 231, 0.5);
    --app-bg: #e3f2fd;
    --error-color: #f44336;
    --warning-color: #ff9800;
    --success-color: #4caf50;
    --console-bg: #1e1e1e;
    --console-text: #d4d4d4;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Noto Sans SC', sans-serif;
}

body {
    background-color: var(--app-bg);
    background-image: linear-gradient(120deg, #e0f2ff 0%, #c5e3ff 50%, #e8def8 100%);
    background-attachment: fixed;
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.top-app-bar {
    background-color: var(--bg-blur);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    color: var(--text-primary);
    padding: 12px 28px;
    border-radius: 24px;
    box-shadow: 0 8px 20px rgba(123, 167, 216, 0.15);
    display: flex;
    align-items: center;
    margin: 16px;
    position: sticky;
    top: 16px;
    z-index: 100;
    height: 65px;
    border: 1px solid rgba(255, 255, 255, 0.5);
}

.top-app-bar h1 {
    font-size: 1.4rem;
    font-weight: 600;
    color: var(--text-primary);
    letter-spacing: 1px;
}

.toolbar {
    display: flex;
    align-items: center;
    padding: 12px 16px;
    background-color: var(--bg-blur);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    gap: 8px;
    flex-wrap: wrap;
    margin: 0 16px;
    border-radius: 24px;
    box-shadow: 0 8px 20px rgba(123, 167, 216, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.5);
}

.nav-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background: rgba(255, 255, 255, 0.5);
    border: none;
    border-radius: 16px;
    color: var(--text-primary);
    cursor: pointer;
    transition: all 0.3s ease;
}

.nav-btn:hover:not(:disabled) {
    background: rgba(255, 255, 255, 0.8);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(123, 167, 216, 0.3);
}

.nav-btn:disabled {
    opacity: 0.38;
    cursor: not-allowed;
}

.nav-btn .material-icons {
    font-size: 24px;
    color: var(--primary-dark);
}

.address-bar {
    flex: 1;
    display: flex;
    align-items: center;
    background: rgba(255, 255, 255, 0.7);
    border: 1px solid var(--primary-light);
    border-radius: 28px;
    padding: 0 16px;
    min-height: 56px;
    transition: all 0.3s ease;
}

.address-bar:focus-within {
    border-color: var(--primary-medium);
    box-shadow: 0 0 0 3px rgba(123, 167, 216, 0.2);
    background: rgba(255, 255, 255, 0.9);
}

.security-icon {
    font-size: 20px;
    margin-right: 8px;
    color: var(--primary-dark);
}

.address-input {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-size: 16px;
    font-family: inherit;
    padding: 12px 0;
    outline: none;
}

.address-input::placeholder {
    color: var(--text-secondary);
}

.go-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--primary-medium);
    color: white;
    border: none;
    border-radius: 20px;
    padding: 12px 24px;
    font-size: 14px;
    font-weight: 500;
    font-family: inherit;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(123, 167, 216, 0.3);
}

.go-btn:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(123, 167, 216, 0.4);
}

.status {
    display: flex;
    align-items: center;
    padding: 8px 14px;
    font-size: 12px;
    color: var(--text-secondary);
    background: rgba(255, 255, 255, 0.5);
    border-radius: 12px;
}

.status.error {
    background: rgba(244, 67, 54, 0.15);
    color: var(--error-color);
    border: 1px solid var(--error-color);
}

.status.success {
    background: rgba(76, 175, 80, 0.15);
    color: var(--success-color);
    border: 1px solid var(--success-color);
}

.main-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    margin: 16px;
    gap: 0;
}

.browser-area {
    flex: 1;
    display: flex;
    flex-direction: column;
    background-color: var(--card-bg);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border-radius: 28px;
    box-shadow: 0 15px 30px rgba(123, 167, 216, 0.18);
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.6);
    min-height: 300px;
}

.loading-bar-container {
    height: 4px;
    background: rgba(167, 199, 231, 0.3);
    position: relative;
    overflow: hidden;
    flex-shrink: 0;
}

.loading-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-light), var(--primary-medium), var(--primary-dark));
    background-size: 200% 100%;
    width: 0;
    transition: width 0.3s ease-out;
}

.loading-bar.active {
    animation: loading 1.5s ease-in-out infinite;
}

@keyframes loading {
    0% { width: 0; background-position: 200% 0; }
    50% { width: 70%; }
    100% { width: 100%; background-position: -200% 0; }
}

iframe {
    flex: 1;
    border: none;
    background: #fff;
    min-height: 200px;
}

.welcome-screen {
    flex: 1;
    display: flex;
    flex-direction: column;
    color: var(--text-primary);
    text-align: center;
    padding: 0;
    overflow-y: auto;
}

.welcome-screen.hidden {
    display: none;
}

.hero-section {
    padding: 40px 40px 20px;
}

.hero-icon {
    width: 140px;
    height: 140px;
    background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary-dark) 100%);
    border-radius: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
    box-shadow: 0 16px 40px rgba(123, 167, 216, 0.4);
}

.hero-icon .material-icons {
    font-size: 72px;
    color: white;
}

.hero-section h2 {
    font-size: 32px;
    font-weight: 600;
    color: var(--primary-dark);
    margin-bottom: 12px;
}

.hero-section p {
    font-size: 16px;
    color: var(--text-secondary);
    max-width: 500px;
    margin: 0 auto;
    line-height: 1.6;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    padding: 20px 40px;
}

.feature-card {
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 24px 20px;
    border: 1px solid rgba(255, 255, 255, 0.6);
    box-shadow: 0 8px 20px rgba(123, 167, 216, 0.12);
    transition: all 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 28px rgba(123, 167, 216, 0.2);
}

.feature-card .material-icons {
    font-size: 36px;
    color: var(--primary-medium);
    margin-bottom: 12px;
}

.feature-card h3 {
    font-size: 16px;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.feature-card p {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.5;
}

.tips-section {
    padding: 20px 40px 40px;
}

.tips-card {
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: 24px;
    padding: 24px 32px;
    border: 1px solid rgba(255, 255, 255, 0.6);
    box-shadow: 0 8px 20px rgba(123, 167, 216, 0.15);
    text-align: left;
}

.tips-card h3 {
    font-size: 16px;
    font-weight: 500;
    color: var(--primary-dark);
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.tips-card h3 .material-icons {
    font-size: 20px;
    color: var(--primary-medium);
}

.tips-card ul {
    list-style: none;
}

.tips-card li {
    font-size: 14px;
    color: var(--text-secondary);
    margin: 12px 0;
    padding-left: 24px;
    position: relative;
}

.tips-card li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 8px;
    height: 8px;
    background: var(--primary-medium);
    border-radius: 50%;
}

.home-toggle {
    position: fixed;
    bottom: 24px;
    right: 24px;
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--primary-medium), var(--primary-dark));
    border: none;
    border-radius: 50%;
    color: white;
    cursor: pointer;
    box-shadow: 0 8px 24px rgba(90, 140, 202, 0.4);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    z-index: 50;
}

.home-toggle:hover {
    transform: scale(1.1);
    box-shadow: 0 12px 32px rgba(90, 140, 202, 0.5);
}

.home-toggle .material-icons {
    font-size: 28px;
}

.console-panel {
    background: var(--console-bg);
    display: none;
    flex-direction: column;
    flex: 0 0 280px;
    height: 280px;
}

.console-panel.visible {
    display: flex;
}

.console-header {
    background: #2d2d2d;
    padding: 10px 16px;
    display: flex;
    align-items: center;
    border-bottom: 1px solid #3d3d3d;
    flex-shrink: 0;
}

.console-title {
    color: #6a9955;
    font-size: 12px;
    font-family: 'JetBrains Mono', monospace;
    display: flex;
    align-items: center;
    gap: 8px;
}

.console-title .material-icons {
    font-size: 16px;
}

.console-body {
    flex: 1;
    overflow-y: auto;
    padding: 12px 16px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 11px;
    line-height: 1.7;
}

.console-body::-webkit-scrollbar {
    width: 8px;
}

.console-body::-webkit-scrollbar-track {
    background: #1e1e1e;
}

.console-body::-webkit-scrollbar-thumb {
    background: #4d4d4d;
    border-radius: 4px;
}

.console-line {
    display: flex;
    gap: 12px;
    padding: 1px 0;
}

.console-time {
    color: #5a5a5a;
    flex-shrink: 0;
    width: 80px;
}

.console-prefix {
    flex-shrink: 0;
    width: 40px;
    text-align: right;
    padding-right: 8px;
}

.console-text {
    word-break: break-all;
    flex: 1;
}

.console-line.info .console-prefix { color: #569cd6; }
.console-line.info .console-text { color: #d4d4d4; }

.console-line.success .console-prefix { color: #4ec9b0; }
.console-line.success .console-text { color: #4ec9b0; }

.console-line.error .console-prefix { color: #f44747; }
.console-line.error .console-text { color: #f44747; }

.console-line.warning .console-prefix { color: #dcdcaa; }
.console-line.warning .console-text { color: #dcdcaa; }

.console-line.debug .console-prefix { color: #c586c0; }
.console-line.debug .console-text { color: #c586c0; }

.console-line.request .console-prefix { color: #ce9178; }
.console-line.request .console-text { color: #ce9178; }

.console-line.response .console-prefix { color: #6a9955; }
.console-line.response .console-text { color: #6a9955; }

.console-line.separator {
    color: #3d3d3d;
}

.console-line.separator .console-text {
    color: #3d3d3d;
}

.error-screen {
    flex: 1;
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--text-primary);
    text-align: center;
    padding: 40px;
}

.error-screen.visible {
    display: flex;
}

.error-icon {
    width: 100px;
    height: 100px;
    background: rgba(244, 67, 54, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
}

.error-icon .material-icons {
    font-size: 48px;
    color: var(--error-color);
}

.error-screen h2 {
    font-size: 24px;
    font-weight: 600;
    color: var(--error-color);
    margin-bottom: 12px;
}

.error-screen p {
    font-size: 14px;
    color: var(--text-secondary);
    max-width: 300px;
    line-height: 1.6;
}

@media (max-width: 600px) {
    .top-app-bar {
        margin: 8px;
        padding: 10px 20px;
        height: 56px;
    }

    .toolbar {
        margin: 0 8px;
        padding: 8px 12px;
        border-radius: 20px;
    }

    .main-container {
        margin: 8px;
    }

    .hero-section {
        padding: 30px 20px 15px;
    }

    .hero-icon {
        width: 100px;
        height: 100px;
        border-radius: 28px;
    }

    .hero-icon .material-icons {
        font-size: 48px;
    }

    .hero-section h2 {
        font-size: 24px;
    }

    .features-grid {
        padding: 15px 20px;
        grid-template-columns: 1fr;
    }

    .tips-section {
        padding: 15px 20px 30px;
    }

    .home-toggle {
        bottom: 16px;
        right: 16px;
        width: 48px;
        height: 48px;
    }

    .console-panel {
        flex: 0 0 200px;
        height: 200px;
    }
}