/**
 * 北斗數位科技 - Enterprise Cloudflare/Vercel 風格主題
 * Inspired by: Cloudflare, Vercel, Modern SaaS Infrastructure
 * Version: 4.0
 * 
 * 設計原則：
 * 1. 深海軍藍/黑色背景
 * 2. 藍色和青色漸變
 * 3. 玻璃態卡片 (Glassmorphism)
 * 4. 柔和發光效果
 * 5. 極簡、乾淨、高級感
 * 6. 企業級信任感
 */

/* ============================================
   企業級配色系統
   ============================================ */
:root {
    /* 主色調 - Cloudflare 橙色 + 藍色 */
    --cf-orange: #f6821f;
    --cf-orange-light: #ff9f43;
    --cf-orange-dark: #e57312;
    
    /* 藍色系 - 企業級 */
    --ent-blue: #0051ff;
    --ent-blue-light: #4285f4;
    --ent-blue-dark: #003ecb;
    --ent-cyan: #00d4ff;
    --ent-cyan-light: #67e8f9;
    --ent-cyan-dark: #06b6d4;
    
    /* 深色背景 - 海軍藍/黑色 */
    --ent-bg-darkest: #000814;
    --ent-bg-darker: #001d3d;
    --ent-bg-dark: #003566;
    --ent-bg-card: rgba(0, 21, 61, 0.6);
    --ent-bg-card-hover: rgba(0, 33, 97, 0.7);
    
    /* 文字色 */
    --ent-text-white: #ffffff;
    --ent-text-light: #e0e7ff;
    --ent-text-muted: #94a3b8;
    --ent-text-dim: #64748b;
    
    /* 邊框 */
    --ent-border-subtle: rgba(255, 255, 255, 0.05);
    --ent-border-light: rgba(255, 255, 255, 0.1);
    --ent-border-blue: rgba(0, 81, 255, 0.3);
    --ent-border-cyan: rgba(0, 212, 255, 0.3);
    
    /* 發光效果 */
    --ent-glow-blue: 0 0 60px rgba(0, 81, 255, 0.3);
    --ent-glow-cyan: 0 0 60px rgba(0, 212, 255, 0.25);
    --ent-glow-orange: 0 0 60px rgba(246, 130, 31, 0.25);
    
    /* 漸變 */
    --ent-gradient-hero: linear-gradient(180deg, #000814 0%, #001d3d 50%, #000814 100%);
    --ent-gradient-blue: linear-gradient(135deg, #0051ff 0%, #00d4ff 100%);
    --ent-gradient-card: linear-gradient(135deg, rgba(0, 29, 61, 0.8) 0%, rgba(0, 8, 20, 0.9) 100%);
    --ent-gradient-glass: linear-gradient(135deg, rgba(255, 255, 255, 0.05) 0%, rgba(255, 255, 255, 0.02) 100%);
}

/* ============================================
   企業級 Hero Section
   ============================================ */
.ent-hero {
    position: relative;
    min-height: 100vh;
    background: var(--ent-gradient-hero);
    overflow: hidden;
}

.ent-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(ellipse 80% 50% at 50% -10%, rgba(0, 81, 255, 0.15) 0%, transparent 50%),
        radial-gradient(ellipse 60% 40% at 80% 20%, rgba(0, 212, 255, 0.1) 0%, transparent 50%),
        radial-gradient(ellipse 40% 30% at 20% 80%, rgba(246, 130, 31, 0.08) 0%, transparent 50%);
    pointer-events: none;
    z-index: 1;
}

/* 網格背景動畫 */
.ent-grid-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(rgba(0, 81, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 81, 255, 0.03) 1px, transparent 1px);
    background-size: 80px 80px;
    mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
    -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
    animation: gridPulse 20s ease-in-out infinite;
    z-index: 2;
}

@keyframes gridPulse {
    0%, 100% { opacity: 0.5; }
    50% { opacity: 0.8; }
}

/* AS 徽章 */
.ent-as-badge {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 12px 24px;
    background: linear-gradient(135deg, rgba(0, 81, 255, 0.15) 0%, rgba(0, 212, 255, 0.1) 100%);
    border: 1px solid rgba(0, 212, 255, 0.3);
    border-radius: 50px;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 4px 30px rgba(0, 212, 255, 0.15);
    transition: all 0.3s ease;
}

.ent-as-badge:hover {
    border-color: rgba(0, 212, 255, 0.5);
    box-shadow: var(--ent-glow-cyan);
    transform: translateY(-2px);
}

.ent-as-badge .as-number {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--ent-cyan);
    letter-spacing: 0.05em;
}

.ent-as-badge .as-label {
    font-size: 0.8rem;
    color: var(--ent-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

/* 企業級標題 */
.ent-headline {
    font-family: 'Inter', -apple-system, sans-serif;
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.02em;
    color: var(--ent-text-white);
}

.ent-headline-gradient {
    background: linear-gradient(135deg, #00d4ff 0%, #0051ff 50%, #00d4ff 100%);
    background-size: 200% auto;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradientFlow 4s ease-in-out infinite;
}

@keyframes gradientFlow {
    0% { background-position: 0% center; }
    50% { background-position: 100% center; }
    100% { background-position: 0% center; }
}

.ent-subtitle {
    font-size: 1.25rem;
    line-height: 1.7;
    color: var(--ent-text-muted);
    max-width: 600px;
}

/* ============================================
   企業級卡片系統
   ============================================ */
.ent-card {
    position: relative;
    background: var(--ent-gradient-card);
    border: 1px solid var(--ent-border-light);
    border-radius: 20px;
    padding: 32px;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    overflow: hidden;
}

.ent-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(0, 212, 255, 0.5), transparent);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.ent-card:hover {
    border-color: var(--ent-border-cyan);
    transform: translateY(-8px);
    box-shadow: var(--ent-glow-cyan);
}

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

/* 卡片圖標 */
.ent-card-icon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(0, 81, 255, 0.2) 0%, rgba(0, 212, 255, 0.1) 100%);
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: 16px;
    margin-bottom: 24px;
    transition: all 0.3s ease;
}

.ent-card:hover .ent-card-icon {
    background: linear-gradient(135deg, rgba(0, 81, 255, 0.3) 0%, rgba(0, 212, 255, 0.2) 100%);
    border-color: rgba(0, 212, 255, 0.4);
    box-shadow: 0 0 30px rgba(0, 212, 255, 0.2);
}

.ent-card-icon i {
    font-size: 1.75rem;
    color: var(--ent-cyan);
}

.ent-card-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--ent-text-white);
    margin-bottom: 12px;
}

.ent-card-desc {
    font-size: 0.95rem;
    color: var(--ent-text-muted);
    line-height: 1.6;
}

/* ============================================
   KPI 統計卡片
   ============================================ */
.ent-stat-card {
    position: relative;
    background: linear-gradient(135deg, rgba(0, 29, 61, 0.6) 0%, rgba(0, 8, 20, 0.8) 100%);
    border: 1px solid var(--ent-border-light);
    border-radius: 16px;
    padding: 28px;
    text-align: center;
    backdrop-filter: blur(20px);
    transition: all 0.3s ease;
}

.ent-stat-card:hover {
    border-color: var(--ent-border-blue);
    box-shadow: var(--ent-glow-blue);
    transform: translateY(-4px);
}

.ent-stat-value {
    font-family: 'JetBrains Mono', monospace;
    font-size: 2rem;
    font-weight: 700;
    color: var(--ent-cyan);
    margin-bottom: 8px;
}

.ent-stat-label {
    font-size: 0.85rem;
    color: var(--ent-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

/* ============================================
   企業級按鈕
   ============================================ */
.ent-btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 16px 32px;
    background: var(--ent-gradient-blue);
    color: #fff;
    font-size: 1rem;
    font-weight: 600;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 20px rgba(0, 81, 255, 0.3);
}

.ent-btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(0, 81, 255, 0.4);
}

.ent-btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 16px 32px;
    background: transparent;
    color: var(--ent-text-white);
    font-size: 1rem;
    font-weight: 600;
    border: 1px solid var(--ent-border-light);
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.ent-btn-secondary:hover {
    border-color: var(--ent-cyan);
    background: rgba(0, 212, 255, 0.1);
    color: var(--ent-cyan);
}

/* ============================================
   台灣網路地圖區塊
   ============================================ */
.ent-network-map {
    position: relative;
    padding: 100px 0;
    background: linear-gradient(180deg, var(--ent-bg-darkest) 0%, var(--ent-bg-darker) 100%);
}

.ent-network-map .map-container {
    position: relative;
    max-width: 600px;
    margin: 0 auto;
}

.ent-network-node {
    position: absolute;
    width: 16px;
    height: 16px;
    background: var(--ent-cyan);
    border-radius: 50%;
    box-shadow: 0 0 20px var(--ent-cyan), 0 0 40px rgba(0, 212, 255, 0.3);
    animation: nodePulse 2s ease-in-out infinite;
}

@keyframes nodePulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.3); opacity: 0.7; }
}

.ent-network-label {
    position: absolute;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.75rem;
    color: var(--ent-text-light);
    background: rgba(0, 29, 61, 0.9);
    padding: 6px 12px;
    border-radius: 6px;
    border: 1px solid var(--ent-border-light);
    white-space: nowrap;
}

/* ============================================
   DDoS 防禦展示區塊
   ============================================ */
.ent-ddos-section {
    position: relative;
    padding: 100px 0;
    background: linear-gradient(180deg, var(--ent-bg-darker) 0%, var(--ent-bg-darkest) 100%);
}

.ent-ddos-card {
    position: relative;
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.1) 0%, rgba(0, 8, 20, 0.9) 100%);
    border: 1px solid rgba(239, 68, 68, 0.2);
    border-radius: 20px;
    padding: 32px;
    transition: all 0.3s ease;
}

.ent-ddos-card:hover {
    border-color: rgba(239, 68, 68, 0.4);
    box-shadow: 0 0 40px rgba(239, 68, 68, 0.15);
}

.ent-ddos-card .protection-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    border-radius: 50px;
    font-size: 0.85rem;
    color: #f87171;
    margin-bottom: 20px;
}

/* ============================================
   信任區塊
   ============================================ */
.ent-trust-section {
    padding: 100px 0;
    background: var(--ent-bg-darkest);
}

.ent-trust-card {
    background: var(--ent-gradient-card);
    border: 1px solid var(--ent-border-light);
    border-radius: 20px;
    padding: 40px;
    text-align: center;
    transition: all 0.3s ease;
}

.ent-trust-card:hover {
    border-color: var(--ent-border-cyan);
    transform: translateY(-4px);
}

.ent-trust-icon {
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(34, 197, 94, 0.2) 0%, rgba(0, 8, 20, 0.5) 100%);
    border-radius: 50%;
    margin: 0 auto 24px;
}

.ent-trust-icon i {
    font-size: 2rem;
    color: #4ade80;
}

/* ============================================
   CTA 區塊
   ============================================ */
.ent-cta-section {
    position: relative;
    padding: 120px 0;
    background: linear-gradient(135deg, var(--ent-bg-darker) 0%, #001233 50%, var(--ent-bg-darker) 100%);
    overflow: hidden;
}

.ent-cta-section::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(0, 81, 255, 0.15) 0%, transparent 60%);
    pointer-events: none;
}

.ent-cta-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    color: var(--ent-text-white);
    margin-bottom: 20px;
}

.ent-cta-subtitle {
    font-size: 1.1rem;
    color: var(--ent-text-muted);
    max-width: 600px;
    margin: 0 auto 40px;
}

/* ============================================
   服務頁面通用樣式
   ============================================ */
.ent-service-hero {
    position: relative;
    min-height: 60vh;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.ent-service-hero.blue {
    background: linear-gradient(135deg, #000814 0%, #001d3d 50%, #003566 100%);
}

.ent-service-hero.cyan {
    background: linear-gradient(135deg, #000814 0%, #003d4d 50%, #005566 100%);
}

.ent-service-hero.orange {
    background: linear-gradient(135deg, #000814 0%, #3d1d00 50%, #662e00 100%);
}

.ent-service-hero.purple {
    background: linear-gradient(135deg, #000814 0%, #1d003d 50%, #2e0066 100%);
}

.ent-service-hero.red {
    background: linear-gradient(135deg, #000814 0%, #3d0000 50%, #660000 100%);
}

.ent-service-hero.green {
    background: linear-gradient(135deg, #000814 0%, #003d1d 50%, #00662e 100%);
}

/* ============================================
   響應式調整
   ============================================ */
@media (max-width: 991.98px) {
    .ent-headline {
        font-size: clamp(2rem, 5vw, 3rem);
    }
    
    .ent-card {
        padding: 24px;
    }
    
    .ent-stat-value {
        font-size: 1.5rem;
    }
}

@media (max-width: 767.98px) {
    .ent-hero {
        min-height: auto;
        padding: 80px 0;
    }
    
    .ent-headline {
        font-size: 2rem;
    }
    
    .ent-subtitle {
        font-size: 1rem;
    }
    
    .ent-btn-primary,
    .ent-btn-secondary {
        padding: 14px 24px;
        font-size: 0.9rem;
    }
    
    .ent-network-map {
        padding: 60px 0;
    }
}

/* ============================================
   企業級服務卡片 - Cloudflare 風格
   ============================================ */
.ent-service-card {
    position: relative;
    background: linear-gradient(145deg, rgba(0, 21, 61, 0.5) 0%, rgba(0, 8, 20, 0.9) 100%);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 20px;
    padding: 28px;
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    overflow: hidden;
}

.ent-service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--card-accent, linear-gradient(90deg, #0051ff, #00d4ff));
    opacity: 0.6;
    transition: opacity 0.3s ease;
}

.ent-service-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 100px;
    background: radial-gradient(circle, var(--card-glow, rgba(0, 212, 255, 0.1)) 0%, transparent 70%);
    opacity: 0;
    transition: opacity 0.4s ease;
    pointer-events: none;
}

.ent-service-card:hover {
    transform: translateY(-8px);
    border-color: rgba(0, 212, 255, 0.3);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4), 0 0 40px var(--card-glow, rgba(0, 212, 255, 0.1));
}

.ent-service-card:hover::before {
    opacity: 1;
}

.ent-service-card:hover::after {
    opacity: 1;
}

/* 服務卡片顏色變體 */
.ent-service-card.blue {
    --card-accent: linear-gradient(90deg, #0051ff, #00d4ff);
    --card-glow: rgba(0, 212, 255, 0.15);
}

.ent-service-card.red {
    --card-accent: linear-gradient(90deg, #ef4444, #f87171);
    --card-glow: rgba(239, 68, 68, 0.15);
}

.ent-service-card.purple {
    --card-accent: linear-gradient(90deg, #8b5cf6, #a78bfa);
    --card-glow: rgba(139, 92, 246, 0.15);
}

.ent-service-card.green {
    --card-accent: linear-gradient(90deg, #22c55e, #4ade80);
    --card-glow: rgba(34, 197, 94, 0.15);
}

.ent-service-card.orange {
    --card-accent: linear-gradient(90deg, #f6821f, #fb923c);
    --card-glow: rgba(246, 130, 31, 0.15);
}

.ent-service-card.gold {
    --card-accent: linear-gradient(90deg, #ffc107, #fcd34d);
    --card-glow: rgba(255, 193, 7, 0.15);
}

/* 服務卡片圖標 */
.ent-service-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 14px;
    margin-bottom: 20px;
    transition: all 0.3s ease;
}

.ent-service-icon.blue {
    background: linear-gradient(135deg, rgba(0, 81, 255, 0.2) 0%, rgba(0, 212, 255, 0.1) 100%);
    border: 1px solid rgba(0, 212, 255, 0.25);
}

.ent-service-icon.red {
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.2) 0%, rgba(248, 113, 113, 0.1) 100%);
    border: 1px solid rgba(239, 68, 68, 0.25);
}

.ent-service-icon.purple {
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.2) 0%, rgba(167, 139, 250, 0.1) 100%);
    border: 1px solid rgba(139, 92, 246, 0.25);
}

.ent-service-icon.green {
    background: linear-gradient(135deg, rgba(34, 197, 94, 0.2) 0%, rgba(74, 222, 128, 0.1) 100%);
    border: 1px solid rgba(34, 197, 94, 0.25);
}

.ent-service-icon.orange {
    background: linear-gradient(135deg, rgba(246, 130, 31, 0.2) 0%, rgba(251, 146, 60, 0.1) 100%);
    border: 1px solid rgba(246, 130, 31, 0.25);
}

.ent-service-icon.gold {
    background: linear-gradient(135deg, rgba(255, 193, 7, 0.2) 0%, rgba(252, 211, 77, 0.1) 100%);
    border: 1px solid rgba(255, 193, 7, 0.25);
}

/* ============================================
   企業級徽章樣式
   ============================================ */
.ent-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.02em;
}

.ent-badge.blue {
    background: rgba(0, 212, 255, 0.1);
    border: 1px solid rgba(0, 212, 255, 0.25);
    color: #67e8f9;
}

.ent-badge.red {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.25);
    color: #fca5a5;
}

.ent-badge.purple {
    background: rgba(139, 92, 246, 0.1);
    border: 1px solid rgba(139, 92, 246, 0.25);
    color: #c4b5fd;
}

.ent-badge.green {
    background: rgba(34, 197, 94, 0.1);
    border: 1px solid rgba(34, 197, 94, 0.25);
    color: #86efac;
}

.ent-badge.orange {
    background: rgba(246, 130, 31, 0.1);
    border: 1px solid rgba(246, 130, 31, 0.25);
    color: #fed7aa;
}

/* ============================================
   動畫關鍵幀
   ============================================ */
@keyframes nodePulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.3); opacity: 0.7; }
}

@keyframes floatAnimation {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

@keyframes glowPulse {
    0%, 100% { opacity: 0.5; filter: blur(20px); }
    50% { opacity: 0.8; filter: blur(30px); }
}

/* ============================================
   深色區塊背景
   ============================================ */
.ent-section-dark {
    background: linear-gradient(180deg, var(--ent-bg-darkest) 0%, var(--ent-bg-darker) 100%);
    position: relative;
}

.ent-section-navy {
    background: linear-gradient(180deg, #000814 0%, #001d3d 50%, #000814 100%);
    position: relative;
}

/* ============================================
   首頁主機卡片修正：避免外層 + card-body 雙重內距
   讓內容有足夠寬度，文字不會擠成窄欄
   ============================================ */
#services .service-card-luxury {
    padding: 0 !important;
}

#services .service-card-luxury .card-body {
    padding: 1.75rem 1.25rem !important;
}

#services .service-card-luxury h5 {
    font-size: 1.05rem !important;
}

#services .service-card-luxury p.small {
    font-size: 0.85rem !important;
    line-height: 1.65 !important;
}

/* ============================================
   動畫減少偏好
   ============================================ */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}