/**
 * 北斗數位科技 - 頂級圖標系統
 * Premium Icon System
 * Version: 1.0
 * 
 * 專業設計圖標，避免 AI 生成風格
 * - 使用 SVG 漸層
 * - 3D 立體效果
 * - 精緻動畫
 * - 統一視覺語言
 */

/* ============================================
   基礎圖標容器
   ============================================ */

/* 標準圖標盒子 */
.icon-box {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.icon-box i,
.icon-box svg {
    position: relative;
    z-index: 2;
}

/* ============================================
   頂級圖標 - 發光 3D 效果
   ============================================ */

/* 金色主題 */
.icon-luxury-gold {
    width: 72px;
    height: 72px;
    background: linear-gradient(145deg, #1f2937 0%, #111827 100%);
    border: 1px solid rgba(212, 168, 83, 0.25);
    border-radius: 20px;
    position: relative;
    overflow: hidden;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.icon-luxury-gold::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(212, 168, 83, 0.15) 0%, transparent 60%);
    border-radius: inherit;
    z-index: 1;
}

.icon-luxury-gold::after {
    content: '';
    position: absolute;
    inset: -2px;
    background: linear-gradient(135deg, rgba(212, 168, 83, 0.3) 0%, transparent 50%);
    border-radius: inherit;
    filter: blur(12px);
    opacity: 0;
    z-index: 0;
    transition: opacity 0.4s ease;
}

.icon-luxury-gold:hover::after {
    opacity: 1;
}

.icon-luxury-gold i {
    font-size: 1.75rem;
    color: #d4a853;
    filter: drop-shadow(0 2px 8px rgba(212, 168, 83, 0.4));
    transition: all 0.4s ease;
}

.icon-luxury-gold:hover i {
    transform: scale(1.15);
    filter: drop-shadow(0 4px 16px rgba(212, 168, 83, 0.6));
}

/* 藍色主題 */
.icon-luxury-blue {
    width: 72px;
    height: 72px;
    background: linear-gradient(145deg, #0c1929 0%, #0a1220 100%);
    border: 1px solid rgba(14, 165, 233, 0.25);
    border-radius: 20px;
    position: relative;
    overflow: hidden;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.icon-luxury-blue::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(14, 165, 233, 0.12) 0%, transparent 60%);
    border-radius: inherit;
    z-index: 1;
}

.icon-luxury-blue::after {
    content: '';
    position: absolute;
    inset: -2px;
    background: linear-gradient(135deg, rgba(14, 165, 233, 0.25) 0%, transparent 50%);
    border-radius: inherit;
    filter: blur(12px);
    opacity: 0;
    z-index: 0;
    transition: opacity 0.4s ease;
}

.icon-luxury-blue:hover::after {
    opacity: 1;
}

.icon-luxury-blue i {
    font-size: 1.75rem;
    color: #0ea5e9;
    filter: drop-shadow(0 2px 8px rgba(14, 165, 233, 0.4));
    transition: all 0.4s ease;
}

.icon-luxury-blue:hover i {
    transform: scale(1.15);
    filter: drop-shadow(0 4px 16px rgba(14, 165, 233, 0.6));
}

/* 紅色主題 */
.icon-luxury-red {
    width: 72px;
    height: 72px;
    background: linear-gradient(145deg, #1f0a0a 0%, #150505 100%);
    border: 1px solid rgba(239, 68, 68, 0.25);
    border-radius: 20px;
    position: relative;
    overflow: hidden;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.icon-luxury-red::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.12) 0%, transparent 60%);
    border-radius: inherit;
    z-index: 1;
}

.icon-luxury-red::after {
    content: '';
    position: absolute;
    inset: -2px;
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.25) 0%, transparent 50%);
    border-radius: inherit;
    filter: blur(12px);
    opacity: 0;
    z-index: 0;
    transition: opacity 0.4s ease;
}

.icon-luxury-red:hover::after {
    opacity: 1;
}

.icon-luxury-red i {
    font-size: 1.75rem;
    color: #ef4444;
    filter: drop-shadow(0 2px 8px rgba(239, 68, 68, 0.4));
    transition: all 0.4s ease;
}

.icon-luxury-red:hover i {
    transform: scale(1.15);
    filter: drop-shadow(0 4px 16px rgba(239, 68, 68, 0.6));
}

/* 綠色主題 */
.icon-luxury-green {
    width: 72px;
    height: 72px;
    background: linear-gradient(145deg, #0a1f12 0%, #051209 100%);
    border: 1px solid rgba(16, 185, 129, 0.25);
    border-radius: 20px;
    position: relative;
    overflow: hidden;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.icon-luxury-green::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.12) 0%, transparent 60%);
    border-radius: inherit;
    z-index: 1;
}

.icon-luxury-green::after {
    content: '';
    position: absolute;
    inset: -2px;
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.25) 0%, transparent 50%);
    border-radius: inherit;
    filter: blur(12px);
    opacity: 0;
    z-index: 0;
    transition: opacity 0.4s ease;
}

.icon-luxury-green:hover::after {
    opacity: 1;
}

.icon-luxury-green i {
    font-size: 1.75rem;
    color: #10b981;
    filter: drop-shadow(0 2px 8px rgba(16, 185, 129, 0.4));
    transition: all 0.4s ease;
}

.icon-luxury-green:hover i {
    transform: scale(1.15);
    filter: drop-shadow(0 4px 16px rgba(16, 185, 129, 0.6));
}

/* 紫色主題 */
.icon-luxury-purple {
    width: 72px;
    height: 72px;
    background: linear-gradient(145deg, #1a0f2e 0%, #100820 100%);
    border: 1px solid rgba(139, 92, 246, 0.25);
    border-radius: 20px;
    position: relative;
    overflow: hidden;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.icon-luxury-purple::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.12) 0%, transparent 60%);
    border-radius: inherit;
    z-index: 1;
}

.icon-luxury-purple::after {
    content: '';
    position: absolute;
    inset: -2px;
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.25) 0%, transparent 50%);
    border-radius: inherit;
    filter: blur(12px);
    opacity: 0;
    z-index: 0;
    transition: opacity 0.4s ease;
}

.icon-luxury-purple:hover::after {
    opacity: 1;
}

.icon-luxury-purple i {
    font-size: 1.75rem;
    color: #8b5cf6;
    filter: drop-shadow(0 2px 8px rgba(139, 92, 246, 0.4));
    transition: all 0.4s ease;
}

.icon-luxury-purple:hover i {
    transform: scale(1.15);
    filter: drop-shadow(0 4px 16px rgba(139, 92, 246, 0.6));
}

/* ============================================
   尺寸變體
   ============================================ */
.icon-luxury-sm {
    width: 52px !important;
    height: 52px !important;
    border-radius: 14px !important;
}
.icon-luxury-sm i { font-size: 1.25rem !important; }

.icon-luxury-lg {
    width: 96px !important;
    height: 96px !important;
    border-radius: 28px !important;
}
.icon-luxury-lg i { font-size: 2.5rem !important; }

.icon-luxury-xl {
    width: 120px !important;
    height: 120px !important;
    border-radius: 32px !important;
}
.icon-luxury-xl i { font-size: 3rem !important; }

/* ============================================
   漸層填充圖標
   ============================================ */
.icon-gradient {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 64px;
    height: 64px;
    border-radius: 18px;
    background: linear-gradient(135deg, #d4a853 0%, #a68a3a 100%);
    box-shadow: 0 8px 24px rgba(212, 168, 83, 0.3), inset 0 1px 0 rgba(255, 255, 255, 0.15);
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.icon-gradient::before {
    content: '';
    position: absolute;
    top: 2px;
    left: 2px;
    right: 2px;
    height: 50%;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.2) 0%, transparent 100%);
    border-radius: 16px 16px 0 0;
    pointer-events: none;
}

.icon-gradient i {
    font-size: 1.5rem;
    color: #000;
}

.icon-gradient:hover {
    transform: translateY(-4px) scale(1.05);
    box-shadow: 0 16px 40px rgba(212, 168, 83, 0.4), inset 0 1px 0 rgba(255, 255, 255, 0.2);
}

/* 藍色漸層 */
.icon-gradient-blue {
    background: linear-gradient(135deg, #0ea5e9 0%, #0369a1 100%);
    box-shadow: 0 8px 24px rgba(14, 165, 233, 0.3), inset 0 1px 0 rgba(255, 255, 255, 0.15);
}
.icon-gradient-blue i { color: #fff; }
.icon-gradient-blue:hover { box-shadow: 0 16px 40px rgba(14, 165, 233, 0.4), inset 0 1px 0 rgba(255, 255, 255, 0.2); }

/* 紅色漸層 */
.icon-gradient-red {
    background: linear-gradient(135deg, #ef4444 0%, #b91c1c 100%);
    box-shadow: 0 8px 24px rgba(239, 68, 68, 0.3), inset 0 1px 0 rgba(255, 255, 255, 0.15);
}
.icon-gradient-red i { color: #fff; }
.icon-gradient-red:hover { box-shadow: 0 16px 40px rgba(239, 68, 68, 0.4), inset 0 1px 0 rgba(255, 255, 255, 0.2); }

/* 綠色漸層 */
.icon-gradient-green {
    background: linear-gradient(135deg, #10b981 0%, #047857 100%);
    box-shadow: 0 8px 24px rgba(16, 185, 129, 0.3), inset 0 1px 0 rgba(255, 255, 255, 0.15);
}
.icon-gradient-green i { color: #fff; }
.icon-gradient-green:hover { box-shadow: 0 16px 40px rgba(16, 185, 129, 0.4), inset 0 1px 0 rgba(255, 255, 255, 0.2); }

/* ============================================
   圓形圖標
   ============================================ */
.icon-circle {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(145deg, #1f2937 0%, #111827 100%);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.4s ease;
}

.icon-circle i {
    font-size: 1.25rem;
    color: #d4a853;
}

.icon-circle:hover {
    transform: scale(1.1);
    border-color: rgba(212, 168, 83, 0.3);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

/* ============================================
   懸浮動畫圖標
   ============================================ */
.icon-float {
    animation: iconFloat 4s ease-in-out infinite;
}

@keyframes iconFloat {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-8px); }
}

.icon-float:nth-child(2) { animation-delay: 0.5s; }
.icon-float:nth-child(3) { animation-delay: 1s; }
.icon-float:nth-child(4) { animation-delay: 1.5s; }

/* ============================================
   脈衝發光圖標
   ============================================ */
.icon-pulse {
    animation: iconPulse 2.5s ease-in-out infinite;
}

@keyframes iconPulse {
    0%, 100% {
        box-shadow: 0 4px 16px rgba(212, 168, 83, 0.2);
    }
    50% {
        box-shadow: 0 8px 32px rgba(212, 168, 83, 0.4), 0 0 60px rgba(212, 168, 83, 0.15);
    }
}

.icon-pulse-blue { animation-name: iconPulseBlue; }
@keyframes iconPulseBlue {
    0%, 100% { box-shadow: 0 4px 16px rgba(14, 165, 233, 0.2); }
    50% { box-shadow: 0 8px 32px rgba(14, 165, 233, 0.4), 0 0 60px rgba(14, 165, 233, 0.15); }
}

.icon-pulse-red { animation-name: iconPulseRed; }
@keyframes iconPulseRed {
    0%, 100% { box-shadow: 0 4px 16px rgba(239, 68, 68, 0.2); }
    50% { box-shadow: 0 8px 32px rgba(239, 68, 68, 0.4), 0 0 60px rgba(239, 68, 68, 0.15); }
}

.icon-pulse-green { animation-name: iconPulseGreen; }
@keyframes iconPulseGreen {
    0%, 100% { box-shadow: 0 4px 16px rgba(16, 185, 129, 0.2); }
    50% { box-shadow: 0 8px 32px rgba(16, 185, 129, 0.4), 0 0 60px rgba(16, 185, 129, 0.15); }
}

/* ============================================
   旋轉光環圖標
   ============================================ */
.icon-ring {
    position: relative;
}

.icon-ring::before {
    content: '';
    position: absolute;
    inset: -8px;
    border: 2px dashed rgba(212, 168, 83, 0.3);
    border-radius: inherit;
    animation: iconRingSpin 12s linear infinite;
}

@keyframes iconRingSpin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* ============================================
   數據圖標（帶數字徽章）
   ============================================ */
.icon-badge {
    position: relative;
}

.icon-badge .badge-count {
    position: absolute;
    top: -6px;
    right: -6px;
    min-width: 22px;
    height: 22px;
    padding: 0 6px;
    background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
    color: #fff;
    font-size: 0.7rem;
    font-weight: 700;
    border-radius: 11px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(239, 68, 68, 0.4);
    animation: badgePop 0.3s ease-out;
}

@keyframes badgePop {
    from { transform: scale(0); }
    to { transform: scale(1); }
}

/* ============================================
   響應式設計
   ============================================ */
@media (max-width: 768px) {
    .icon-luxury-gold,
    .icon-luxury-blue,
    .icon-luxury-red,
    .icon-luxury-green,
    .icon-luxury-purple {
        width: 60px;
        height: 60px;
        border-radius: 16px;
    }
    
    .icon-luxury-gold i,
    .icon-luxury-blue i,
    .icon-luxury-red i,
    .icon-luxury-green i,
    .icon-luxury-purple i {
        font-size: 1.5rem;
    }
    
    .icon-luxury-lg {
        width: 72px !important;
        height: 72px !important;
    }
    
    .icon-luxury-xl {
        width: 96px !important;
        height: 96px !important;
    }
}

/* ============================================
   減少動畫偏好
   ============================================ */
@media (prefers-reduced-motion: reduce) {
    .icon-float,
    .icon-pulse,
    .icon-ring::before {
        animation: none !important;
    }
    
    .icon-luxury-gold,
    .icon-luxury-blue,
    .icon-luxury-red,
    .icon-luxury-green,
    .icon-luxury-purple,
    .icon-gradient,
    .icon-circle {
        transition: none !important;
    }
}