@import url('https://fonts.googleapis.com/css2?family=Noto+Serif+TC:wght@300;400;700&display=swap');

:root {
    --moss-green: #4A5D23;
    --ink-black: #1A1A1B;
    --porcelain-white: #F9F4F0;
    --amber: #D2691E;
}

body {
    background-color: var(--porcelain-white);
    color: var(--ink-black);
    font-family: 'Noto Serif TC', serif;
    margin: 0;
    padding: 0;
    line-height: 1.8;
}

h1, h2, h3, h4, .brush-font {
    font-weight: 700;
    color: var(--ink-black);
}

.bg-moss-green { background-color: var(--moss-green); color: var(--porcelain-white); }
.text-moss-green { color: var(--moss-green); }
.text-amber { color: var(--amber); }

/* 水墨暈染效果 */
.ink-wash-btn {
    position: relative;
    overflow: hidden;
    background: transparent;
    border: 1px solid var(--ink-black);
    padding: 10px 25px;
    transition: color 0.4s ease;
    z-index: 1;
}

.ink-wash-btn:before {
    content: "";
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: var(--ink-black);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.6s ease, height 0.6s ease;
    z-index: -1;
    opacity: 0;
}

.ink-wash-btn:hover:before {
    width: 300%;
    height: 300%;
    opacity: 0.8;
}

.ink-wash-btn:hover {
    color: var(--porcelain-white);
}

/* 雲霧背景效果 */
.mist-bg {
    background: linear-gradient(rgba(249, 244, 240, 0.8), rgba(249, 244, 240, 0.8)), url('https://images.unsplash.com/photo-1544911845-1f34a3eb46b1?auto=format&fit=crop&q=80&w=2070');
    background-size: cover;
    background-attachment: fixed;
}

.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background-color: var(--moss-green);
    color: var(--porcelain-white);
    position: relative;
    overflow: hidden;
}

.navbar-custom {
    background-color: rgba(26, 26, 27, 0.9);
    padding: 15px 0;
}

.navbar-custom .nav-link {
    color: var(--porcelain-white) !important;
    margin: 0 15px;
    font-size: 1.1rem;
    position: relative;
}

.navbar-custom .nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 1px;
    background-color: var(--porcelain-white);
    transition: width 0.3s ease;
}

.navbar-custom .nav-link:hover::after {
    width: 100%;
}

.footer {
    background-color: var(--ink-black);
    color: var(--porcelain-white);
    padding: 60px 0 30px;
}

/* 卡片與內容區塊 */
.tea-card {
    background: white;
    border: none;
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
    transition: transform 0.3s ease;
    border-radius: 0;
    margin-bottom: 30px;
}

.tea-card:hover {
    transform: translateY(-5px);
}

.wabi-sabi-border {
    border: 1px solid rgba(74, 93, 35, 0.2);
    padding: 40px;
    position: relative;
}

/* 動態圖表與計算器樣式 */
.lab-container {
    background: #fff;
    padding: 30px;
    border-radius: 4px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.05);
}

.flavor-wheel-container {
    width: 300px;
    height: 300px;
    margin: 0 auto;
    position: relative;
}

canvas#flavorChart {
    width: 100% !important;
    height: 100% !important;
}

.tea-color-preview {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    margin: 20px auto;
    border: 5px solid #fff;
    box-shadow: 0 0 15px rgba(0,0,0,0.1);
    transition: background-color 0.5s ease;
}