/* ============================================
   AttackFlow — Linear Aesthetic Design System
   暗黑 / 明亮双主题 · 玻璃拟态 · 微光 · 呼吸动画
   ============================================ */

/* ---------- 主题变量 ---------- */
:root[data-theme="dark"] {
    --bg-canvas: #08080a;
    --bg-surface: #0d0d10;
    --bg-elevated: #141418;
    --text-primary: #ededf0;
    --text-secondary: #8a8f98;
    --text-muted: #5c5c66;
    --border-subtle: rgba(255, 255, 255, 0.06);
    --border-default: rgba(255, 255, 255, 0.1);
    --border-strong: rgba(255, 255, 255, 0.16);
    --accent: #6366f1;
    --accent-hover: #7c7ff5;
    --accent-glow: rgba(99, 102, 241, 0.18);
    --danger: #f87171;
    --danger-glow: rgba(248, 113, 113, 0.15);
    --success: #34d399;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.5);
    --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.6);
    --glass-bg: rgba(13, 13, 16, 0.65);
    --grid-color: rgba(255, 255, 255, 0.025);
    --scan-color: rgba(99, 102, 241, 0.04);
    --chart-bg: #08080a;
    --chart-area: #1a1a22;
    --chart-border: #2a2a35;
    --chart-text: #8a8f98;
}

:root[data-theme="light"] {
    --bg-canvas: #f6f6f8;
    --bg-surface: #ffffff;
    --bg-elevated: #fafafb;
    --text-primary: #18181b;
    --text-secondary: #6b7280;
    --text-muted: #9ca3af;
    --border-subtle: rgba(0, 0, 0, 0.05);
    --border-default: rgba(0, 0, 0, 0.08);
    --border-strong: rgba(0, 0, 0, 0.14);
    --accent: #5b5fe8;
    --accent-hover: #4f46e5;
    --accent-glow: rgba(91, 95, 232, 0.1);
    --danger: #e5484d;
    --danger-glow: rgba(229, 72, 77, 0.08);
    --success: #2f9e44;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.08);
    --glass-bg: rgba(255, 255, 255, 0.72);
    --grid-color: rgba(0, 0, 0, 0.025);
    --scan-color: rgba(91, 95, 232, 0.03);
    --chart-bg: #ffffff;
    --chart-area: #eceef1;
    --chart-border: #d8dce3;
    --chart-text: #6b7280;
}

/* ---------- 基础重置 ---------- */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 15px;
}

body {
    font-family: 'Inter', -apple-system, 'Segoe UI', sans-serif;
    background-color: var(--bg-canvas);
    color: var(--text-primary);
    letter-spacing: -0.01em;
    transition: background-color 0.3s ease, color 0.3s ease;
    overflow-x: hidden;
}

/* ---------- 科技感网格背景 ---------- */
.tech-grid-bg {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    background-image:
        linear-gradient(var(--grid-color) 1px, transparent 1px),
        linear-gradient(90deg, var(--grid-color) 1px, transparent 1px);
    background-size: 48px 48px;
    mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, black 30%, transparent 80%);
    -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, black 30%, transparent 80%);
}

/* 顶部环境光晕 */
.ambient-glow {
    position: fixed;
    top: -200px;
    left: 50%;
    transform: translateX(-50%);
    width: 800px;
    height: 400px;
    z-index: 0;
    pointer-events: none;
    background: radial-gradient(ellipse, var(--accent-glow) 0%, transparent 70%);
    filter: blur(40px);
}

/* ---------- 导航栏 ---------- */
.nav-bar {
    position: sticky;
    top: 0;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 28px;
    height: 60px;
    background: var(--glass-bg);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid var(--border-subtle);
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.05rem;
    font-weight: 600;
    letter-spacing: -0.02em;
    color: var(--text-primary);
}

.nav-brand .brand-icon {
    width: 32px;
    height: 32px;
    display: grid;
    place-items: center;
    border-radius: 8px;
    background: linear-gradient(135deg, var(--accent), #a855f7);
    box-shadow: 0 0 20px var(--accent-glow);
    color: #fff;
    font-size: 0.9rem;
}

.nav-brand .brand-sub {
    font-size: 0.7rem;
    font-weight: 400;
    color: var(--text-muted);
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

/* ---------- 主题切换按钮 ---------- */
.theme-toggle {
    width: 38px;
    height: 38px;
    display: grid;
    place-items: center;
    border-radius: 10px;
    border: 1px solid var(--border-subtle);
    background: var(--bg-elevated);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 0.95rem;
}

.theme-toggle:hover {
    border-color: var(--border-strong);
    color: var(--text-primary);
    box-shadow: 0 0 16px var(--accent-glow);
}

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

/* ---------- 通用按钮 ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    border-radius: 10px;
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.18s ease;
    border: 1px solid transparent;
    white-space: nowrap;
}

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
    border-color: var(--border-subtle);
}
.btn-ghost:hover {
    color: var(--text-primary);
    border-color: var(--border-default);
    background: var(--bg-elevated);
}

.btn-danger {
    background: transparent;
    color: var(--danger);
    border-color: var(--danger-glow);
}
.btn-danger:hover {
    background: var(--danger-glow);
    border-color: var(--danger);
    box-shadow: 0 0 16px var(--danger-glow);
}

.btn-accent {
    background: var(--accent);
    color: #fff;
    border-color: var(--accent);
    box-shadow: 0 0 20px var(--accent-glow);
}
.btn-accent:hover {
    background: var(--accent-hover);
    box-shadow: 0 0 28px var(--accent-glow);
    transform: translateY(-1px);
}

/* ---------- 主布局 ---------- */
.main-layout {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1fr 380px;
    gap: 16px;
    padding: 16px 28px 28px;
    height: calc(100vh - 60px);
}

@media (max-width: 1024px) {
    .main-layout {
        grid-template-columns: 1fr;
        height: auto;
    }
}

/* ---------- 卡片基础 ---------- */
.card {
    background: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    border-radius: 16px;
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: border-color 0.2s ease;
}
.card:hover {
    border-color: var(--border-default);
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 18px;
    border-bottom: 1px solid var(--border-subtle);
}

.card-title {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-primary);
    letter-spacing: -0.01em;
}

.card-title .title-icon {
    color: var(--accent);
    font-size: 0.9rem;
}

.card-body {
    padding: 16px 18px;
}

/* ---------- 地图区域 ---------- */
.map-card {
    display: flex;
    flex-direction: column;
    min-height: 400px;
}

.map-container {
    flex: 1;
    position: relative;
    background: var(--chart-bg);
}

.map-container::after {
    content: '';
    position: absolute;
    inset: 0;
    pointer-events: none;
    background: linear-gradient(180deg, transparent 0%, var(--scan-color) 50%, transparent 100%);
    background-size: 100% 200%;
    animation: scanline 6s linear infinite;
    z-index: 1;
}

@keyframes scanline {
    0% { background-position: 0 -100%; }
    100% { background-position: 0 100%; }
}

/* 地图角标 */
.map-badge {
    position: absolute;
    z-index: 2;
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    border-radius: 8px;
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border-subtle);
    font-size: 0.72rem;
    font-weight: 500;
    color: var(--text-secondary);
    letter-spacing: 0.02em;
}

.map-badge.top-left { top: 14px; left: 14px; }
.map-badge.top-right { top: 14px; right: 14px; }

.live-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--danger);
    box-shadow: 0 0 8px var(--danger);
    animation: pulse-dot 1.6s ease-in-out infinite;
}

@keyframes pulse-dot {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.4; transform: scale(0.7); }
}

/* ---------- 右侧面板 ---------- */
.side-panel {
    display: flex;
    flex-direction: column;
    gap: 16px;
    overflow-y: auto;
    scrollbar-width: thin;
    scrollbar-color: var(--border-default) transparent;
}

.side-panel::-webkit-scrollbar { width: 6px; }
.side-panel::-webkit-scrollbar-thumb {
    background: var(--border-default);
    border-radius: 3px;
}

/* ---------- 攻击列表 ---------- */
.attack-list-wrapper {
    height: 360px;
    overflow: hidden;
    position: relative;
    mask-image: linear-gradient(180deg, transparent 0%, black 8%, black 92%, transparent 100%);
    -webkit-mask-image: linear-gradient(180deg, transparent 0%, black 8%, black 92%, transparent 100%);
}

.attack-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding: 4px 0;
    animation: scroll-up 30s linear infinite;
}

.attack-list:hover {
    animation-play-state: paused;
}

@keyframes scroll-up {
    0% { transform: translateY(0); }
    100% { transform: translateY(-50%); }
}

.attack-item {
    position: relative;
    padding: 12px 14px;
    border-radius: 12px;
    background: var(--bg-elevated);
    border: 1px solid var(--border-subtle);
    transition: all 0.2s ease;
    overflow: hidden;
}

.attack-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: var(--danger);
    box-shadow: 0 0 12px var(--danger-glow);
}

/* 微光扫过 */
.attack-item::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(110deg, transparent 30%, var(--accent-glow) 50%, transparent 70%);
    transform: translateX(-100%);
    transition: transform 0.6s ease;
    pointer-events: none;
}

.attack-item:hover {
    border-color: var(--border-strong);
    transform: translateX(2px);
}
.attack-item:hover::after {
    transform: translateX(100%);
}

.attack-item-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
}

.attack-location {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--text-primary);
}

.attack-location .loc-icon {
    color: var(--danger);
    font-size: 0.8rem;
}

.attack-ip {
    font-size: 0.72rem;
    color: var(--text-muted);
    font-family: 'JetBrains Mono', 'Consolas', monospace;
    letter-spacing: 0;
}

.attack-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: 8px;
}

.tag {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 3px 8px;
    border-radius: 6px;
    font-size: 0.68rem;
    font-weight: 500;
    background: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    color: var(--text-secondary);
}

.tag-mono {
    font-family: 'JetBrains Mono', 'Consolas', monospace;
    letter-spacing: 0;
}

.attack-time {
    font-size: 0.68rem;
    color: var(--text-muted);
    margin-top: 6px;
}

/* ---------- 统计卡片 ---------- */
.stats-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

.stat-box {
    padding: 14px;
    border-radius: 12px;
    background: var(--bg-elevated);
    border: 1px solid var(--border-subtle);
    transition: all 0.2s ease;
}

.stat-box:hover {
    border-color: var(--border-default);
    box-shadow: var(--shadow-md);
}

.stat-label {
    font-size: 0.7rem;
    font-weight: 500;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.stat-value {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-top: 4px;
    letter-spacing: -0.03em;
    font-variant-numeric: tabular-nums;
}

.stat-value.danger { color: var(--danger); }
.stat-value.accent { color: var(--accent); }

.stat-trend {
    font-size: 0.68rem;
    color: var(--text-muted);
    margin-top: 2px;
}

/* ---------- 登录页 ---------- */
.login-page {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 24px;
    position: relative;
}

.login-card {
    width: 100%;
    max-width: 420px;
    background: var(--glass-bg);
    backdrop-filter: blur(24px) saturate(180%);
    -webkit-backdrop-filter: blur(24px) saturate(180%);
    border: 1px solid var(--border-default);
    border-radius: 20px;
    box-shadow: var(--shadow-lg);
    padding: 36px 32px;
    position: relative;
    z-index: 1;
}

/* 卡片顶部光带 */
.login-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 20%;
    right: 20%;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--accent), transparent);
    box-shadow: 0 0 12px var(--accent);
}

.login-header {
    text-align: center;
    margin-bottom: 28px;
}

.login-logo {
    width: 48px;
    height: 48px;
    margin: 0 auto 16px;
    display: grid;
    place-items: center;
    border-radius: 14px;
    background: linear-gradient(135deg, var(--accent), #a855f7);
    box-shadow: 0 8px 24px var(--accent-glow);
    color: #fff;
    font-size: 1.3rem;
}

.login-title {
    font-size: 1.3rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--text-primary);
}

.login-subtitle {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 6px;
    letter-spacing: 0.02em;
}

/* 表单 */
.form-group {
    margin-bottom: 18px;
}

.form-input-wrap {
    position: relative;
    display: flex;
    align-items: center;
}

.form-input-wrap .input-icon {
    position: absolute;
    left: 14px;
    color: var(--text-muted);
    font-size: 0.9rem;
    pointer-events: none;
}

.form-input {
    width: 100%;
    padding: 12px 14px 12px 42px;
    border-radius: 12px;
    background: var(--bg-elevated);
    border: 1px solid var(--border-subtle);
    color: var(--text-primary);
    font-size: 0.88rem;
    transition: all 0.18s ease;
    outline: none;
}

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

.form-input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
    background: var(--bg-surface);
}

/* 验证码行 */
.captcha-row {
    display: flex;
    gap: 10px;
    align-items: stretch;
}

.captcha-row .form-input-wrap {
    flex: 1;
}

.captcha-img-btn {
    width: 120px;
    height: 46px;
    border-radius: 12px;
    background: var(--bg-elevated);
    border: 1px solid var(--border-subtle);
    cursor: pointer;
    overflow: hidden;
    display: grid;
    place-items: center;
    transition: all 0.2s ease;
    padding: 0;
}

.captcha-img-btn:hover {
    border-color: var(--border-strong);
    box-shadow: var(--shadow-md);
}

.captcha-img-btn img {
    max-width: 100%;
    max-height: 100%;
}

.captcha-refresh {
    width: 46px;
    height: 46px;
    border-radius: 12px;
    background: var(--bg-elevated);
    border: 1px solid var(--border-subtle);
    color: var(--text-secondary);
    cursor: pointer;
    display: grid;
    place-items: center;
    transition: all 0.2s ease;
    flex-shrink: 0;
}

.captcha-refresh:hover {
    color: var(--accent);
    border-color: var(--accent);
    box-shadow: 0 0 16px var(--accent-glow);
}

/* 错误提示 */
.alert-error {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 14px;
    border-radius: 12px;
    background: var(--danger-glow);
    border: 1px solid var(--danger);
    color: var(--danger);
    font-size: 0.82rem;
    margin-bottom: 20px;
}

.alert-error .alert-icon {
    font-size: 1rem;
    flex-shrink: 0;
}

/* 登录按钮 */
.btn-login {
    width: 100%;
    padding: 13px;
    border-radius: 12px;
    font-size: 0.9rem;
    font-weight: 600;
    margin-top: 8px;
}

/* 主题切换浮钮（登录页） */
.theme-toggle-floating {
    position: fixed;
    top: 24px;
    right: 24px;
    z-index: 10;
}

/* ---------- 呼吸光晕（装饰） ---------- */
.breathing-glow {
    position: fixed;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
    filter: blur(30px);
    pointer-events: none;
    z-index: 0;
    animation: breathe 5s ease-in-out infinite;
}

.breathing-glow.bl-1 { bottom: -100px; left: -80px; }
.breathing-glow.bl-2 {
    top: 30%;
    right: -120px;
    background: radial-gradient(circle, var(--danger-glow) 0%, transparent 70%);
    animation-delay: 2.5s;
}

@keyframes breathe {
    0%, 100% { opacity: 0.5; transform: scale(1); }
    50% { opacity: 0.9; transform: scale(1.15); }
}

/* ---------- 空状态 ---------- */
/* ---------- 时间范围切换器 ---------- */
.range-switcher {
    display: flex;
    align-items: center;
    gap: 6px;
}

.range-btn {
    font-size: 0.72rem;
    font-weight: 500;
    padding: 3px 10px;
    border-radius: 6px;
    border: 1px solid var(--border-subtle);
    background: var(--bg-elevated);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.15s ease;
    font-family: inherit;
}

.range-btn:hover {
    border-color: var(--border-default);
    color: var(--text-primary);
}

.range-btn.active {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
}

/* ---------- 服务器列表 ---------- */
.server-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
    max-height: 240px;
    overflow-y: auto;
}

.server-count-badge {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-secondary);
    background: var(--bg-elevated);
    border: 1px solid var(--border-subtle);
    border-radius: 8px;
    padding: 2px 8px;
    min-width: 24px;
    text-align: center;
}

.server-item {
    position: relative;
    padding: 10px 12px 10px 15px;
    border-radius: 10px;
    background: var(--bg-elevated);
    border: 1px solid var(--border-subtle);
    transition: all 0.2s ease;
    overflow: hidden;
}

.server-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: var(--success);
    box-shadow: 0 0 10px rgba(52, 211, 153, 0.3);
}

.server-item:hover {
    border-color: var(--border-strong);
    transform: translateX(2px);
}

.server-item-head {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 4px;
}

.server-status-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--success);
    box-shadow: 0 0 8px var(--success);
    flex-shrink: 0;
}

.server-name {
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--text-primary);
    font-family: 'JetBrains Mono', monospace;
    word-break: break-all;
}

.server-coords {
    font-size: 0.72rem;
    color: var(--text-secondary);
    font-family: 'JetBrains Mono', monospace;
    padding-left: 15px;
}

.server-coords i {
    color: var(--accent);
    font-size: 0.7rem;
    margin-right: 2px;
}

.empty-state {
    padding: 40px 16px;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.82rem;
}

.empty-state .empty-icon {
    font-size: 1.8rem;
    margin-bottom: 10px;
    opacity: 0.4;
}

/* ---------- 模态框 ---------- */
.modal-overlay {
    position: fixed;
    inset: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s ease, visibility 0.2s ease;
}

.modal-overlay.show {
    opacity: 1;
    visibility: visible;
}

.modal-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-default);
    border-radius: 16px;
    box-shadow: var(--shadow-lg);
    padding: 28px 32px 24px;
    width: 360px;
    max-width: 90vw;
    text-align: center;
    transform: scale(0.95);
    transition: transform 0.2s ease;
}

.modal-overlay.show .modal-card {
    transform: scale(1);
}

.modal-icon {
    font-size: 2rem;
    color: var(--danger);
    margin-bottom: 14px;
}

.modal-title {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.modal-desc {
    font-size: 0.82rem;
    color: var(--text-secondary);
    margin-bottom: 22px;
    line-height: 1.5;
}

.modal-actions {
    display: flex;
    gap: 10px;
    justify-content: center;
}

/* ---------- 响应式 ---------- */
@media (max-width: 768px) {
    .nav-bar { padding: 0 16px; }
    .main-layout { padding: 12px 16px 20px; }
    .nav-brand .brand-sub { display: none; }
    .stats-grid { grid-template-columns: 1fr; }
}

/* ---------- 减少动画偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}