/* =============================================
   Base Styles - 現代中式奢華基礎
   全平台支援：iOS / Android / Desktop
   ============================================= */

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    -webkit-tap-highlight-color: transparent;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    background-color: var(--bg-base);
    color: var(--text-main);
    line-height: 1.7;
    overflow-x: hidden;
    min-height: 100vh;
    position: relative;
}

/* === 祥雲紋理背景 === */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: var(--pattern-cloud);
    opacity: 0.5;
    pointer-events: none;
    z-index: -2;
}

/* === 金色光暈效果 === */
body::after {
    content: '';
    position: fixed;
    top: -50%;
    left: -50%;
    right: -50%;
    bottom: -50%;
    background:
        radial-gradient(ellipse at 20% 0%, rgba(212, 175, 55, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 100%, rgba(196, 30, 58, 0.06) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 50%, rgba(212, 175, 55, 0.03) 0%, transparent 70%);
    pointer-events: none;
    z-index: -1;
    animation: subtleGlow 20s ease-in-out infinite alternate;
}

@keyframes subtleGlow {
    0% { opacity: 0.8; transform: scale(1); }
    100% { opacity: 1; transform: scale(1.1); }
}

/* === 選取文字樣式 === */
::selection {
    background: var(--gold);
    color: var(--bg-base);
}

::-moz-selection {
    background: var(--gold);
    color: var(--bg-base);
}

/* === 滾動條樣式（桌面版） === */
::-webkit-scrollbar {
    width: 8px;
}

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

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

::-webkit-scrollbar-thumb:hover {
    background: var(--gold);
}

/* === 工具類別 === */
.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* === 金色分隔線 === */
.gold-divider {
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--gold), transparent);
    margin: 2rem 0;
}

/* === Error Toast === */
.error-toast {
    position: fixed;
    bottom: 100px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: var(--status-hot-bg);
    color: var(--status-hot);
    border: 1px solid var(--status-hot-border);
    padding: 12px 24px;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-weight: 500;
    opacity: 0;
    transition: all var(--transition-normal) var(--ease-smooth);
    z-index: 2000;
    pointer-events: none;
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
}

.error-toast.visible {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

/* === 連結基礎樣式 === */
a {
    color: var(--gold);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--gold-light);
}

/* === 圖片基礎 === */
img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* === 安全區域（iPhone 瀏海/底部） === */
@supports (padding: max(0px)) {
    body {
        padding-left: max(0px, env(safe-area-inset-left));
        padding-right: max(0px, env(safe-area-inset-right));
    }
}