/**
 * 北斗數位科技 - 現代視覺效果樣式
 * 參考 LETWEBS.com / IMCloud.tw 設計風格
 * Version: 2.0
 */

/* ============================================
   CSS 變數定義
   ============================================ */
:root {
    /* 主色調 */
    --primary-gradient: linear-gradient(135deg, #ffc107 0%, #ff9800 100%);
    --secondary-gradient: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);
    --success-gradient: linear-gradient(135deg, #22c55e 0%, #16a34a 100%);
    --danger-gradient: linear-gradient(135deg, #ef4444 0%, #b91c1c 100%);
    --purple-gradient: linear-gradient(135deg, #8b5cf6 0%, #7c3aed 100%);
    
    /* 背景色 */
    --bg-dark-1: #0f172a;
    --bg-dark-2: #1e293b;
    --bg-dark-3: #1f2937;
    --bg-card: rgba(30, 41, 59, 0.8);
    
    /* 玻璃態效果 */
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-blur: blur(10px);
    
    /* 陰影 */
    --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 10px 25px -5px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 20px 50px -12px rgba(0, 0, 0, 0.3);
    --shadow-glow-warning: 0 8px 30px rgba(255, 193, 7, 0.35);
    --shadow-glow-primary: 0 8px 30px rgba(59, 130, 246, 0.35);
    --shadow-glow-success: 0 8px 30px rgba(34, 197, 94, 0.35);
    --shadow-glow-danger: 0 8px 30px rgba(239, 68, 68, 0.35);
    
    /* 動畫時間 */
    --transition-fast: 0.15s;
    --transition-normal: 0.3s;
    --transition-slow: 0.5s;
    --transition-slower: 0.8s;
    
    /* 緩動函數 */
    --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-out-back: cubic-bezier(0.34, 1.56, 0.64, 1);
    --ease-in-out-cubic: cubic-bezier(0.65, 0, 0.35, 1);
}

/* ============================================
   全域動畫定義
   ============================================ */

/* 淡入上移 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 淡入下移 */
@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 淡入左移 */
@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-40px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* 淡入右移 */
@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(40px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* 縮放彈入 */
@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* 浮動動畫 */
@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-15px);
    }
}

/* 脈衝光暈 */
@keyframes pulseGlow {
    0%, 100% {
        box-shadow: 0 0 20px rgba(255, 193, 7, 0.3);
    }
    50% {
        box-shadow: 0 0 40px rgba(255, 193, 7, 0.6);
    }
}

/* 旋轉 */
@keyframes rotate {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

/* 打字機閃爍游標 */
@keyframes blink {
    0%, 50% {
        border-color: #ffc107;
    }
    51%, 100% {
        border-color: transparent;
    }
}

/* 波浪動畫 */
@keyframes wave {
    0% {
        transform: translateX(0) translateZ(0) scaleY(1);
    }
    50% {
        transform: translateX(-25%) translateZ(0) scaleY(0.55);
    }
    100% {
        transform: translateX(-50%) translateZ(0) scaleY(1);
    }
}

/* 閃爍效果 */
@keyframes shimmer {
    0% {
        background-position: -1000px 0;
    }
    100% {
        background-position: 1000px 0;
    }
}

/* 漸變背景動畫 */
@keyframes gradientShift {
    0% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
    100% {
        background-position: 0% 50%;
    }
}

/* 粒子上浮 */
@keyframes particleFloat {
    0% {
        opacity: 0;
        transform: translateY(100px) scale(0);
    }
    50% {
        opacity: 1;
    }
    100% {
        opacity: 0;
        transform: translateY(-100px) scale(1);
    }
}

/* ============================================
   滾動觸發動畫類別
   ============================================ */

/* 初始狀態 - 等待進入視窗 */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity var(--transition-slow) var(--ease-out-expo),
                transform var(--transition-slow) var(--ease-out-expo);
}

.animate-on-scroll.animate-fade-left {
    transform: translateX(-40px);
}

.animate-on-scroll.animate-fade-right {
    transform: translateX(40px);
}

.animate-on-scroll.animate-scale {
    transform: scale(0.9);
}

/* 進入視窗後的狀態 */
.animate-on-scroll.animated {
    opacity: 1;
    transform: translateY(0) translateX(0) scale(1);
}

/* 延遲動畫 */
.animate-delay-100 { transition-delay: 0.1s; }
.animate-delay-200 { transition-delay: 0.2s; }
.animate-delay-300 { transition-delay: 0.3s; }
.animate-delay-400 { transition-delay: 0.4s; }
.animate-delay-500 { transition-delay: 0.5s; }
.animate-delay-600 { transition-delay: 0.6s; }
.animate-delay-700 { transition-delay: 0.7s; }
.animate-delay-800 { transition-delay: 0.8s; }

/* 交錯動畫 - 用於卡片列表 */
.stagger-animation > * {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.5s var(--ease-out-expo),
                transform 0.5s var(--ease-out-expo);
}

.stagger-animation.animated > *:nth-child(1) { transition-delay: 0.05s; }
.stagger-animation.animated > *:nth-child(2) { transition-delay: 0.1s; }
.stagger-animation.animated > *:nth-child(3) { transition-delay: 0.15s; }
.stagger-animation.animated > *:nth-child(4) { transition-delay: 0.2s; }
.stagger-animation.animated > *:nth-child(5) { transition-delay: 0.25s; }
.stagger-animation.animated > *:nth-child(6) { transition-delay: 0.3s; }

.stagger-animation.animated > * {
    opacity: 1;
    transform: translateY(0);
}

/* ============================================
   Hero 區塊特效
   ============================================ */

/* 打字機效果容器 */
.typewriter {
    overflow: hidden;
    border-right: 3px solid #ffc107;
    white-space: nowrap;
    animation: blink 0.75s step-end infinite;
}

/* 漸變文字效果 */
.gradient-text {
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.gradient-text-blue {
    background: var(--secondary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.gradient-text-animated {
    background: linear-gradient(90deg, #ffc107, #ff9800, #f59e0b, #ffc107);
    background-size: 300% 100%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradientShift 3s ease infinite;
}

/* 浮動裝飾元素 */
.floating-element {
    animation: float 6s ease-in-out infinite;
}

.floating-element-delayed {
    animation: float 6s ease-in-out infinite;
    animation-delay: -3s;
}

/* 光暈背景裝飾 */
.glow-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(60px);
    opacity: 0.5;
    pointer-events: none;
}

.glow-orb-warning {
    background: radial-gradient(circle, rgba(255, 193, 7, 0.4) 0%, transparent 70%);
}

.glow-orb-primary {
    background: radial-gradient(circle, rgba(59, 130, 246, 0.4) 0%, transparent 70%);
}

.glow-orb-purple {
    background: radial-gradient(circle, rgba(139, 92, 246, 0.3) 0%, transparent 70%);
}

/* 粒子背景 */
.particles-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    pointer-events: none;
}

.particle {
    position: absolute;
    width: 6px;
    height: 6px;
    background: rgba(255, 193, 7, 0.6);
    border-radius: 50%;
    animation: particleFloat 8s infinite;
}

/* ============================================
   卡片效果
   ============================================ */

/* 玻璃態卡片 */
.glass-card {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    transition: all var(--transition-normal) var(--ease-out-expo);
}

.glass-card:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.2);
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

/* 漸層邊框卡片 */
.gradient-border-card {
    position: relative;
    background: var(--bg-dark-2);
    border-radius: 16px;
    overflow: hidden;
}

.gradient-border-card::before {
    content: '';
    position: absolute;
    inset: 0;
    padding: 2px;
    border-radius: 16px;
    background: linear-gradient(135deg, #ffc107, #ff9800, #ef4444, #8b5cf6);
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    opacity: 0.5;
    transition: opacity var(--transition-normal);
}

.gradient-border-card:hover::before {
    opacity: 1;
}

/* 3D 傾斜卡片 */
.tilt-card {
    transform-style: preserve-3d;
    transition: transform var(--transition-normal) var(--ease-out-expo);
}

.tilt-card:hover {
    transform: perspective(1000px) rotateX(5deg) rotateY(-5deg) translateZ(20px);
}

/* 服務卡片增強 */
.service-card-modern {
    position: relative;
    background: linear-gradient(135deg, var(--bg-dark-2) 0%, var(--bg-dark-1) 100%);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    overflow: hidden;
    transition: all var(--transition-normal) var(--ease-out-expo);
}

.service-card-modern::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--primary-gradient);
    transform: scaleX(0);
    transition: transform var(--transition-normal) var(--ease-out-expo);
}

.service-card-modern:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(255, 193, 7, 0.3);
}

.service-card-modern:hover::before {
    transform: scaleX(1);
}

/* 圖標容器 - 懸浮效果 */
.icon-box {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 70px;
    height: 70px;
    border-radius: 16px;
    transition: all var(--transition-normal) var(--ease-out-back);
}

.icon-box:hover {
    transform: scale(1.1) rotate(5deg);
}

.icon-box-glow {
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

/* ============================================
   按鈕效果
   ============================================ */

/* 發光按鈕 */
.btn-glow {
    position: relative;
    overflow: hidden;
    transition: all var(--transition-normal) var(--ease-out-expo);
}

.btn-glow::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn-glow:hover::before {
    width: 300px;
    height: 300px;
}

.btn-glow:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-glow-warning);
}

/* 閃光按鈕 */
.btn-shimmer {
    position: relative;
    overflow: hidden;
}

.btn-shimmer::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(
        to right,
        transparent 0%,
        rgba(255, 255, 255, 0.3) 50%,
        transparent 100%
    );
    transform: rotate(30deg);
    animation: shimmer 3s infinite;
}

/* 磁吸按鈕效果 */
.btn-magnetic {
    transition: transform var(--transition-fast);
}

/* 漣漪效果 */
.ripple {
    position: relative;
    overflow: hidden;
}

.ripple::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    pointer-events: none;
    background-image: radial-gradient(circle, rgba(255, 255, 255, 0.3) 10%, transparent 10.01%);
    background-repeat: no-repeat;
    background-position: 50%;
    transform: scale(10, 10);
    opacity: 0;
    transition: transform 0.5s, opacity 1s;
}

.ripple:active::after {
    transform: scale(0, 0);
    opacity: 0.3;
    transition: 0s;
}

/* ============================================
   導航列效果
   ============================================ */

/* 導航連結動態底線 */
.nav-link-animated {
    position: relative;
}

.nav-link-animated::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--primary-gradient);
    transition: all var(--transition-normal) var(--ease-out-expo);
    transform: translateX(-50%);
}

.nav-link-animated:hover::after,
.nav-link-animated.active::after {
    width: 80%;
}

/* 下拉選單動畫 */
.dropdown-menu-animated {
    opacity: 0;
    transform: translateY(10px);
    transition: all var(--transition-normal) var(--ease-out-expo);
    display: block !important;
    visibility: hidden;
}

.dropdown:hover .dropdown-menu-animated,
.dropdown.show .dropdown-menu-animated {
    opacity: 1;
    transform: translateY(0);
    visibility: visible;
}

/* ============================================
   滾動進度條
   ============================================ */

.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 0%;
    height: 3px;
    background: var(--primary-gradient);
    z-index: 9999;
    transition: width 0.1s linear;
}

/* ============================================
   載入動畫
   ============================================ */

.page-loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-dark-1);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 99999;
    transition: opacity 0.5s, visibility 0.5s;
}

.page-loader.loaded {
    opacity: 0;
    visibility: hidden;
}

.loader-spinner {
    width: 50px;
    height: 50px;
    border: 3px solid rgba(255, 193, 7, 0.2);
    border-top-color: #ffc107;
    border-radius: 50%;
    animation: rotate 1s linear infinite;
}

/* ============================================
   數字計數動畫
   ============================================ */

.counter {
    display: inline-block;
    font-variant-numeric: tabular-nums;
}

/* ============================================
   圖片效果
   ============================================ */

/* 圖片懸浮縮放 */
.img-hover-zoom {
    overflow: hidden;
    border-radius: 16px;
}

.img-hover-zoom img {
    transition: transform var(--transition-slow) var(--ease-out-expo);
}

.img-hover-zoom:hover img {
    transform: scale(1.1);
}

/* 圖片遮罩效果 */
.img-overlay {
    position: relative;
    overflow: hidden;
}

.img-overlay::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8) 0%, transparent 50%);
    opacity: 0.7;
    transition: opacity var(--transition-normal);
}

.img-overlay:hover::after {
    opacity: 0.5;
}

/* ============================================
   文字效果
   ============================================ */

/* 文字發光 */
.text-glow {
    text-shadow: 0 0 10px currentColor, 0 0 20px currentColor, 0 0 30px currentColor;
}

/* 文字描邊 */
.text-stroke {
    -webkit-text-stroke: 1px currentColor;
    -webkit-text-fill-color: transparent;
}

/* 文字漸顯 */
.text-reveal {
    background: linear-gradient(90deg, var(--bg-dark-1), var(--bg-dark-1)) no-repeat;
    background-size: 100% 100%;
    -webkit-background-clip: text;
    transition: background-size 0.5s;
}

.text-reveal.revealed {
    background-size: 0% 100%;
}

/* ============================================
   分隔線效果
   ============================================ */

.divider-gradient {
    height: 2px;
    background: linear-gradient(90deg, transparent, rgba(255, 193, 7, 0.5), transparent);
    border: none;
}

.divider-animated {
    height: 2px;
    background: linear-gradient(90deg, transparent 0%, #ffc107 50%, transparent 100%);
    background-size: 200% 100%;
    animation: gradientShift 3s ease infinite;
    border: none;
}

/* ============================================
   工具提示效果
   ============================================ */

.tooltip-modern {
    position: relative;
}

.tooltip-modern::before {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(-5px);
    padding: 8px 12px;
    background: var(--bg-dark-1);
    color: white;
    font-size: 12px;
    border-radius: 8px;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
    z-index: 1000;
}

.tooltip-modern:hover::before {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

/* ============================================
   響應式調整
   ============================================ */

@media (max-width: 768px) {
    .animate-on-scroll {
        transform: translateY(20px);
    }
    
    .floating-element {
        animation: none;
    }
    
    .glow-orb {
        display: none;
    }
    
    .tilt-card:hover {
        transform: none;
    }
    
    .service-card-modern:hover {
        transform: translateY(-4px);
    }
}

/* 減少動畫偏好 */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .floating-element,
    .floating-element-delayed {
        animation: none;
    }
}

/* ============================================
   滾動條美化
   ============================================ */

::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-dark-1);
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, #ffc107, #ff9800);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(180deg, #ffca2c, #ffa726);
}

/* Firefox 滾動條 */
* {
    scrollbar-width: thin;
    scrollbar-color: #ffc107 var(--bg-dark-1);
}

/* ============================================
   選取效果
   ============================================ */

::selection {
    background: rgba(255, 193, 7, 0.3);
    color: #fff;
}

::-moz-selection {
    background: rgba(255, 193, 7, 0.3);
    color: #fff;
}