/* 字體引入 */
@import url('https://fonts.googleapis.com/css2?family=Black+Ops+One&family=Inter:wght@400;700;900&display=swap');

:root {
    --rust-orange: #f97316;
    --rust-dark: #0a0a0b;
}

body {
    background-color: var(--rust-dark);
    color: #e2e8f0;
    font-family: 'Inter', sans-serif;
    overflow-x: hidden;
}

.heading-font { font-family: 'Black Ops One', system-ui; }

/* 沉浸式背景 */
.hero-section {
    position: relative;
    background: linear-gradient(rgba(10, 10, 11, 0.7), rgba(10, 10, 11, 0.95)), 
                url('background.webp'); 
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
}

/* 導航列狀態控制 */
#main-nav { transition: all 0.4s ease-in-out; }
.nav-scrolled {
    background-color: rgba(0, 0, 0, 0.9) !important;
    padding-top: 0.75rem !important;
    padding-bottom: 0.75rem !important;
    border-bottom: 1px solid rgba(249, 115, 22, 0.3);
}

/* 毛玻璃與發光效果 */
.glass-card {
    background: rgba(255, 255, 255, 0.02);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 16px;
}

.btn-glow:hover { box-shadow: 0 0 20px rgba(249, 115, 22, 0.5); }
.text-glow { text-shadow: 0 0 10px rgba(255, 255, 255, 0.3); }

/* 倒數計時器 */
.countdown-item {
    background: rgba(0, 0, 0, 0.4);
    border: 1px solid rgba(255, 255, 255, 0.1);
    min-width: 80px;
}

/* 圖標方框置中修復 */
.icon-box {
    width: 80px;
    height: 80px;
    background: rgba(249, 115, 22, 0.1);
    border-radius: 16px;
    border: 1px solid rgba(249, 115, 22, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
}

/* 自定義滾動條 */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: #0a0a0b; }
::-webkit-scrollbar-thumb { background: #334155; border-radius: 10px; }
::-webkit-scrollbar-thumb:hover { background: var(--rust-orange); }