/* ============================================
   Internet Download Manager 繁體中文官網 - 公共樣式
   主題色: #383838 #01FF01
   深色主題
   ============================================ */

/* CSS 變數 */
:root {
    --color-primary: #1FB393;
    --color-primary-dark: #1FB393;
    --color-primary-glow: rgba(1, 255, 1, 0.3);
    --color-bg-dark: #0a0a0a;
    --color-bg-section: #111111;
    --color-bg-card: #1a1a1a;
    --color-bg-card-hover: #222222;
    --color-text-primary: #383838;
    --color-text-white: #ffffff;
    --color-text-light: #e0e0e0;
    --color-text-muted: #999999;
    --color-text-dim: #666666;
    --color-border: #2a2a2a;
    --color-border-light: #333333;
    --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
    --max-width: 1200px;
    --nav-height: 72px;
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* 重置樣式 */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family);
    background-color: var(--color-bg-dark);
    color: var(--color-text-light);
    line-height: 1.8;
    font-size: 16px;
    overflow-x: hidden;
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-primary-dark);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* 容器 */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

/* 按鈕基礎樣式 */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal);
    border: none;
    outline: none;
    text-decoration: none;
    white-space: nowrap;
}

.btn svg {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
}

.btn-primary {
    background: var(--color-primary);
    color: #000000;
    box-shadow: 0 0 20px var(--color-primary-glow);
}

.btn-primary:hover {
    background: var(--color-primary-dark);
    color: #000000;
    box-shadow: 0 0 30px var(--color-primary-glow);
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    color: var(--color-text-muted);
    border: 1px solid var(--color-border-light);
}

.btn-outline:hover {
    color: var(--color-text-white);
    border-color: var(--color-text-muted);
    background: rgba(255, 255, 255, 0.05);
}

.btn-large {
    padding: 16px 36px;
    font-size: 17px;
    border-radius: 10px;
}

/* 區塊標題 */
.section-title {
    font-size: 36px;
    font-weight: 700;
    color: var(--color-text-white);
    margin-bottom: 20px;
    line-height: 1.3;
}

.section-subtitle {
    font-size: 18px;
    color: var(--color-text-muted);
    line-height: 1.8;
    max-width: 800px;
}

/* 漸變文字 */
.gradient-text {
    background: linear-gradient(135deg, var(--color-primary), #00cc88);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* 發光效果 */
.glow-line {
    width: 60px;
    height: 3px;
    background: var(--color-primary);
    border-radius: 2px;
    box-shadow: 0 0 10px var(--color-primary-glow);
}

/* 卡片樣式 */
.card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 16px;
    padding: 32px;
    transition: all var(--transition-normal);
}

.card:hover {
    border-color: var(--color-border-light);
    background: var(--color-bg-card-hover);
    transform: translateY(-4px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

/* 圖片容器 */
.img-showcase {
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--color-border);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.4);
}

.img-showcase img {
    width: 100%;
    display: block;
}

/* 捲軸樣式 */
::-webkit-scrollbar {
    width: 8px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--color-border-light);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-text-dim);
}

/* 動畫 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

@keyframes pulse-glow {
    0%, 100% {
        box-shadow: 0 0 20px var(--color-primary-glow);
    }
    50% {
        box-shadow: 0 0 40px var(--color-primary-glow), 0 0 60px rgba(1, 255, 1, 0.15);
    }
}

.animate-fade-in-up {
    animation: fadeInUp 0.6s ease forwards;
}

.animate-fade-in {
    animation: fadeIn 0.6s ease forwards;
}

/* 響應式斷點 */
@media (max-width: 768px) {
    .section-title {
        font-size: 28px;
    }
    
    .section-subtitle {
        font-size: 16px;
    }

    .container {
        padding: 0 16px;
    }

    .btn-large {
        padding: 14px 28px;
        font-size: 15px;
    }
}

@media (max-width: 480px) {
    .section-title {
        font-size: 24px;
    }

    body {
        font-size: 15px;
    }
}