/**
 * Site Tomograph - 雙主題樣式
 * E1 深淵版 (Dark) / E3 淺色版 (Light)
 */

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

/* ============================
   深色主題 (E1 Deep - 預設)
   ============================ */
:root {
    --bg-deep: #020205;
    --bg-panel: rgba(5, 8, 15, 0.95);
    --bg-input: rgba(0, 0, 0, 0.6);
    --border: rgba(0, 238, 255, 0.15);
    --border-hover: rgba(0, 238, 255, 0.4);

    /* 狀態色彩 */
    --healthy: #00eeff;
    --healthy-glow: rgba(0, 238, 255, 0.3);
    --blockage: #ff6600;
    --blockage-glow: rgba(255, 102, 0, 0.25);
    --necrosis: #3a3a4a;

    --accent: #0088ff;

    /* 文字 */
    --text-primary: rgba(200, 220, 255, 0.9);
    --text-secondary: rgba(150, 170, 200, 0.5);

    /* 字體 */
    --font-mono: 'SF Mono', 'Fira Code', 'Consolas', monospace;

    /* 按鈕 */
    --btn-text: var(--bg-deep);

    /* 過渡 */
    --transition: 0.3s ease;
}

/* ============================
   淺色主題 (E3 Light)
   ============================ */
[data-theme="light"] {
    --bg-deep: #f8f9fc;
    --bg-panel: rgba(255, 255, 255, 0.95);
    --bg-input: #eef1f5;
    --border: rgba(0, 0, 0, 0.08);
    --border-hover: rgba(5, 150, 105, 0.4);

    /* 狀態色彩 */
    --healthy: #059669;
    --healthy-glow: rgba(5, 150, 105, 0.15);
    --blockage: #d97706;
    --blockage-glow: rgba(217, 119, 6, 0.15);
    --necrosis: #9ca3af;

    --accent: #2563eb;

    /* 文字 */
    --text-primary: #1f2937;
    --text-secondary: #6b7280;

    /* 按鈕 */
    --btn-text: white;
}

body {
    font-family: var(--font-mono);
    background: var(--bg-deep);
    color: var(--text-primary);
    min-height: 100vh;
    overflow: hidden;
    transition: background var(--transition), color var(--transition);
}

/* 動態背景 - 深色 */
body::before {
    content: '';
    position: fixed;
    top: 35%;
    left: 50%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, var(--healthy-glow) 0%, transparent 70%);
    transform: translate(-50%, -50%);
    animation: abyss-pulse 6s ease-in-out infinite;
    pointer-events: none;
    opacity: 0.4;
    z-index: 0;
    transition: opacity var(--transition);
}

[data-theme="light"] body::before {
    opacity: 0.6;
}

@keyframes abyss-pulse {
    0%, 100% { transform: translate(-50%, -50%) scale(0.9); opacity: 0.3; }
    50% { transform: translate(-50%, -50%) scale(1.1); opacity: 0.5; }
}

/* ============================
   主題切換按鈕
   ============================ */
#theme-toggle {
    position: fixed;
    top: 20px;
    right: 20px;
    width: 44px;
    height: 44px;
    background: var(--bg-panel);
    border: 1px solid var(--border);
    border-radius: 12px;
    cursor: pointer;
    z-index: 150;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition);
    backdrop-filter: blur(10px);
}

#theme-toggle:hover {
    border-color: var(--healthy);
    box-shadow: 0 0 20px var(--healthy-glow);
    transform: scale(1.05);
}

#theme-toggle svg {
    width: 20px;
    height: 20px;
    fill: var(--text-primary);
    transition: fill var(--transition);
}

#theme-toggle .icon-sun { display: none; }
#theme-toggle .icon-moon { display: block; }

[data-theme="light"] #theme-toggle .icon-sun { display: block; }
[data-theme="light"] #theme-toggle .icon-moon { display: none; }

/* ============================
   控制面板
   ============================ */
#control-panel {
    position: fixed;
    top: 20px;
    left: 20px;
    width: 300px;
    background: var(--bg-panel);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 22px;
    z-index: 100;
    backdrop-filter: blur(16px);
    transition: all var(--transition);
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.2);
}

[data-theme="light"] #control-panel {
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
}

#control-panel:hover {
    border-color: var(--border-hover);
}

.title-row {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-icon {
    width: 32px;
    height: 32px;
    color: var(--healthy);
    flex-shrink: 0;
    transition: color var(--transition);
}

.logo-icon.large {
    width: 40px;
    height: 40px;
}

#control-panel h1 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 4px;
    color: var(--healthy);
    transition: color var(--transition);
}

.subtitle {
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-bottom: 16px;
    transition: color var(--transition);
}

.input-group {
    display: flex;
    gap: 8px;
    margin-bottom: 16px;
}

#url-input {
    flex: 1;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 10px 14px;
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 0.85rem;
    transition: all var(--transition);
}

#url-input:focus {
    outline: none;
    border-color: var(--healthy);
    box-shadow: 0 0 0 3px var(--healthy-glow);
}

#url-input::placeholder {
    color: var(--text-secondary);
}

#scan-btn {
    background: var(--healthy);
    color: var(--btn-text);
    border: none;
    border-radius: 8px;
    padding: 10px 18px;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition);
}

#scan-btn:hover {
    filter: brightness(1.1);
    box-shadow: 0 4px 16px var(--healthy-glow);
    transform: translateY(-1px);
}

#scan-btn:disabled {
    background: var(--necrosis);
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

#stop-btn {
    background: #dc2626;
    color: white;
    border: none;
    border-radius: 8px;
    padding: 10px 14px;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition);
}

#stop-btn:hover {
    background: #b91c1c;
    box-shadow: 0 4px 16px rgba(220, 38, 38, 0.3);
}

/* ============================
   狀態面板
   ============================ */
#status-panel {
    border-top: 1px solid var(--border);
    padding-top: 12px;
    margin-bottom: 12px;
    transition: border-color var(--transition);
}

.status-item {
    display: flex;
    justify-content: space-between;
    margin-bottom: 6px;
    font-size: 0.75rem;
}

.status-item .label {
    color: var(--text-secondary);
    transition: color var(--transition);
}

.status-item .value {
    color: var(--healthy);
    font-weight: 500;
    transition: color var(--transition);
}

.status-item .value.error {
    color: var(--necrosis);
}

.status-item .value.warning {
    color: var(--blockage);
}

/* ============================
   圖例
   ============================ */
#legend {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    font-size: 0.7rem;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 5px;
    color: var(--text-secondary);
    transition: color var(--transition);
}

.dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    transition: all var(--transition);
}

.dot.healthy {
    background: var(--healthy);
    box-shadow: 0 0 8px var(--healthy-glow);
}

.dot.blockage {
    background: var(--blockage);
    box-shadow: 0 0 8px var(--blockage-glow);
}

.dot.necrosis {
    background: var(--necrosis);
}

/* ============================
   3D 圖容器
   ============================ */
#graph-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

/* ============================
   節點資訊面板
   ============================ */
#node-info {
    position: fixed;
    bottom: 20px;
    left: 20px;
    width: 300px;
    background: var(--bg-panel);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 16px;
    z-index: 100;
    backdrop-filter: blur(16px);
    transition: all var(--transition);
}

[data-theme="light"] #node-info {
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
}

#node-info h3 {
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 8px;
    color: var(--healthy);
    transition: color var(--transition);
}

#info-content {
    font-size: 0.75rem;
    line-height: 1.6;
}

#info-content .url {
    color: var(--text-secondary);
    word-break: break-all;
    margin-bottom: 8px;
    transition: color var(--transition);
}

#info-content .metric {
    display: flex;
    justify-content: space-between;
    padding: 4px 0;
    border-bottom: 1px solid var(--border);
    transition: border-color var(--transition);
}

/* ============================
   報告面板 - 右下角，不遮擋主視覺
   ============================ */
#report-panel {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 340px;
    max-height: 60vh;
    overflow-y: auto;
    background: var(--bg-panel);
    border: 1px solid var(--healthy);
    border-radius: 12px;
    padding: 18px;
    z-index: 100;
    backdrop-filter: blur(16px);
    transition: all var(--transition);
}

[data-theme="light"] #report-panel {
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.12);
}

#report-panel h2 {
    font-size: 0.95rem;
    margin-bottom: 12px;
    color: var(--healthy);
    transition: color var(--transition);
}

#report-content {
    font-size: 0.72rem;
    line-height: 1.5;
    margin-bottom: 12px;
}

#report-content h3 {
    font-size: 0.8rem;
    margin-top: 10px;
    margin-bottom: 6px;
}

#report-content ul {
    padding-left: 16px;
    margin: 0;
}

#report-content li {
    margin-bottom: 4px;
    word-break: break-all;
}

#report-content code {
    background: rgba(0, 0, 0, 0.2);
    padding: 1px 4px;
    border-radius: 3px;
    font-size: 0.68rem;
}

[data-theme="light"] #report-content code {
    background: rgba(0, 0, 0, 0.06);
}

#report-panel .btn-group {
    display: flex;
    gap: 8px;
}

#report-panel button {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-primary);
    padding: 6px 12px;
    border-radius: 6px;
    cursor: pointer;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    transition: all var(--transition);
    flex: 1;
}

#report-panel button:hover {
    border-color: var(--healthy);
    color: var(--healthy);
}

#download-report {
    background: var(--healthy) !important;
    color: var(--btn-text) !important;
    border-color: var(--healthy) !important;
}

/* ============================
   載入動畫
   ============================ */
#loading {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    z-index: 300;
}

.loader {
    width: 40px;
    height: 40px;
    border: 2px solid var(--border);
    border-top-color: var(--healthy);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 12px;
}

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

#loading p {
    font-size: 0.8rem;
    color: var(--text-secondary);
    transition: color var(--transition);
}

/* ============================
   工具類別
   ============================ */
.hidden {
    display: none !important;
}

/* 暖機動畫 */
@keyframes warmup {
    0% { opacity: 0; }
    100% { opacity: 1; }
}

.warmup {
    animation: warmup 1.5s ease-out forwards;
}

/* ============================
   控制面板標題列
   ============================ */
.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 4px;
}

#about-btn {
    width: 28px;
    height: 28px;
    background: transparent;
    border: 1px solid var(--border);
    border-radius: 50%;
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition);
    flex-shrink: 0;
}

#about-btn:hover {
    border-color: var(--healthy);
    color: var(--healthy);
    box-shadow: 0 0 12px var(--healthy-glow);
}

/* ============================
   說明面板
   ============================ */
#about-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(8px);
    z-index: 500;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: fadeIn 0.3s ease;
}

[data-theme="light"] #about-overlay {
    background: rgba(0, 0, 0, 0.4);
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

#about-panel {
    position: relative;
    width: 90%;
    max-width: 560px;
    max-height: 85vh;
    overflow-y: auto;
    background: var(--bg-panel);
    border: 1px solid var(--healthy);
    border-radius: 16px;
    padding: 32px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
    animation: slideUp 0.3s ease;
}

[data-theme="light"] #about-panel {
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
}

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

#close-about {
    position: absolute;
    top: 16px;
    right: 16px;
    width: 32px;
    height: 32px;
    background: transparent;
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text-secondary);
    font-size: 1.2rem;
    cursor: pointer;
    transition: all var(--transition);
}

#close-about:hover {
    border-color: var(--healthy);
    color: var(--healthy);
}

.about-title {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 4px;
}

#about-panel h2 {
    font-size: 1.4rem;
    color: var(--healthy);
    margin: 0;
}

.about-tagline {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border);
}

#about-panel section {
    margin-bottom: 20px;
}

#about-panel h3 {
    font-size: 0.9rem;
    color: var(--healthy);
    margin-bottom: 8px;
    font-weight: 600;
}

#about-panel section p {
    font-size: 0.8rem;
    line-height: 1.7;
    color: var(--text-primary);
}

#about-panel section strong {
    color: var(--healthy);
}

#about-panel ul,
#about-panel ol {
    font-size: 0.8rem;
    line-height: 1.8;
    padding-left: 20px;
    color: var(--text-primary);
}

#about-panel li {
    margin-bottom: 4px;
}

.indicator-grid {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.indicator {
    display: flex;
    align-items: center;
    gap: 12px;
}

.indicator .dot {
    width: 12px;
    height: 12px;
    flex-shrink: 0;
}

.indicator strong {
    display: block;
    font-size: 0.8rem;
    margin-bottom: 2px;
}

.indicator p {
    font-size: 0.72rem !important;
    color: var(--text-secondary) !important;
    margin: 0;
}

.about-footer {
    margin-top: 24px;
    padding-top: 16px;
    border-top: 1px solid var(--border);
    font-size: 0.7rem;
    color: var(--text-secondary);
    text-align: center;
}