/* ============================================
   OneUp Design System · v1.0.0
   零一优创视觉规范 — 暖色基线（warm-baseline）
   ============================================
   用法：在 <head> 中引入本文件，
   然后给 <body> 加 class="oneup-body" 启用主题。
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=EB+Garamond:ital,wght@0,400;0,500;1,400;1,500&family=Noto+Sans+SC:wght@300;400;500;700&family=Noto+Serif+SC:wght@400;500;600;700&display=swap');

:root {
    /* 深咖系 */
    --brown-darkest: #2d1810;
    --brown-dark: #3d2817;
    --brown-light: #7a6553;
    /* 焦糖橙 */
    --orange: #c97f4a;
    --orange-light: #e0a070;
    --orange-deep: #a85d2c;
    --orange-tint: rgba(201, 127, 74, 0.1);
    --orange-line: rgba(201, 127, 74, 0.4);
    /* 米色背景 */
    --bg-primary: #fdfaf4;
    --bg-secondary: #f5efe4;
    --bg-card: #ffffff;
    /* 中性 */
    --border-soft: rgba(122, 101, 83, 0.18);
    --border-strong: rgba(122, 101, 83, 0.35);
    /* 状态色（保持克制，只在评分用） */
    --status-green: #5a8a5e;
    --status-blue: #5b7ba0;
    --status-amber: #b07c3a;
    --status-red: #a05050;
}

/* ===================================================
   Base
   =================================================== */
html { scroll-behavior: smooth; }

body.oneup-body {
    font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
    background: var(--bg-primary);
    color: var(--brown-darkest);
    line-height: 1.8;
    -webkit-font-smoothing: antialiased;
    margin: 0;
    min-height: 100vh;
}

body.oneup-body a { color: inherit; text-decoration: none; }

body.oneup-body * { box-sizing: border-box; }

/* ===================================================
   Top Navigation (一体化暗色 nav)
   =================================================== */
.oneup-nav {
    background: var(--brown-darkest);
    color: var(--bg-primary);
    padding: 18px 48px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid rgba(201, 127, 74, 0.18);
    position: relative;
    z-index: 50;
}

.oneup-nav-brand {
    display: flex;
    align-items: center;
    gap: 14px;
    color: var(--bg-primary);
}

.oneup-nav-brand img {
    height: 32px;
    filter: brightness(0) invert(1) opacity(0.92);
}

.oneup-nav-brand-name {
    font-family: 'Noto Serif SC', serif;
    font-size: 1.05rem;
    letter-spacing: 4px;
    font-weight: 500;
}

.oneup-nav-brand-sub {
    font-family: 'EB Garamond', serif;
    font-style: italic;
    color: rgba(253, 250, 244, 0.5);
    font-size: 0.85rem;
    letter-spacing: 2px;
    margin-left: 4px;
}

.oneup-nav-links {
    display: flex;
    gap: 28px;
    list-style: none;
    margin: 0;
    padding: 0;
    align-items: center;
}

.oneup-nav-link {
    color: rgba(253, 250, 244, 0.78);
    font-size: 0.88rem;
    letter-spacing: 2px;
    position: relative;
    padding-bottom: 4px;
    transition: color 0.3s;
}

.oneup-nav-link::after {
    content: '';
    position: absolute;
    bottom: 0; left: 50%;
    width: 0;
    height: 1px;
    background: var(--orange);
    transition: width 0.3s, left 0.3s;
}

.oneup-nav-link:hover { color: var(--orange-light); }
.oneup-nav-link:hover::after { left: 0; width: 100%; }

.oneup-nav-user {
    font-family: 'EB Garamond', serif;
    font-style: italic;
    color: rgba(253, 250, 244, 0.6);
    font-size: 0.9rem;
    letter-spacing: 1px;
}

/* ===================================================
   Buttons
   =================================================== */
.btn-oneup {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    background: var(--orange);
    color: white !important;
    padding: 14px 36px;
    font-family: 'Noto Sans SC', sans-serif;
    font-size: 0.95rem;
    letter-spacing: 3px;
    cursor: pointer;
    transition: background 0.3s, transform 0.3s;
    border: none;
    border-radius: 0;
    text-decoration: none;
    line-height: 1;
}

.btn-oneup:hover {
    background: var(--orange-deep);
    transform: translateY(-2px);
}

.btn-oneup:disabled {
    background: var(--brown-light);
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

.btn-oneup-outline {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    background: transparent;
    color: var(--orange) !important;
    padding: 12px 30px;
    border: 1px solid var(--orange);
    font-family: 'Noto Sans SC', sans-serif;
    font-size: 0.9rem;
    letter-spacing: 2px;
    cursor: pointer;
    transition: all 0.3s;
    text-decoration: none;
    line-height: 1;
    border-radius: 0;
}

.btn-oneup-outline:hover {
    background: var(--orange);
    color: white !important;
}

.btn-oneup-ghost {
    background: transparent;
    color: var(--brown-light) !important;
    padding: 10px 18px;
    border: 1px solid transparent;
    font-size: 0.88rem;
    letter-spacing: 1px;
    transition: all 0.3s;
    text-decoration: none;
    border-radius: 0;
    cursor: pointer;
}

.btn-oneup-ghost:hover {
    color: var(--brown-darkest) !important;
    border-color: var(--border-soft);
}

.btn-oneup-dark {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    background: var(--brown-darkest);
    color: white !important;
    padding: 14px 36px;
    font-family: 'Noto Sans SC', sans-serif;
    font-size: 0.95rem;
    letter-spacing: 3px;
    cursor: pointer;
    transition: background 0.3s, transform 0.3s;
    border: none;
    border-radius: 0;
    text-decoration: none;
    line-height: 1;
}

.btn-oneup-dark:hover {
    background: var(--brown-dark);
    transform: translateY(-2px);
}

/* ===================================================
   Cards
   =================================================== */
.oneup-card {
    background: var(--bg-card);
    border: 1px solid var(--border-soft);
    padding: 32px;
    transition: all 0.3s;
    border-radius: 0;
}

.oneup-card.hoverable:hover {
    border-color: var(--orange);
    transform: translateY(-3px);
    box-shadow: 0 12px 32px rgba(45, 24, 16, 0.07);
}

.oneup-card-secondary {
    background: var(--bg-secondary);
    padding: 32px;
    border-radius: 0;
}

/* ===================================================
   Forms
   =================================================== */
.oneup-input,
.oneup-select,
.oneup-textarea {
    width: 100%;
    background: var(--bg-card);
    border: 1px solid var(--border-soft);
    padding: 14px 16px;
    font-family: 'Noto Sans SC', sans-serif;
    font-size: 0.95rem;
    color: var(--brown-darkest);
    transition: border-color 0.3s, box-shadow 0.3s;
    border-radius: 0;
    line-height: 1.5;
}

.oneup-input:focus,
.oneup-select:focus,
.oneup-textarea:focus {
    outline: none;
    border-color: var(--orange);
    box-shadow: 0 0 0 3px var(--orange-tint);
}

.oneup-label {
    display: block;
    font-size: 0.85rem;
    color: var(--brown-light);
    letter-spacing: 1px;
    margin-bottom: 8px;
}

.oneup-form-group {
    margin-bottom: 20px;
}

.oneup-select {
    appearance: none;
    -webkit-appearance: none;
    background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23c97f4a' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 14px center;
    padding-right: 38px;
}

/* ===================================================
   Section
   =================================================== */
.oneup-section {
    padding: 80px 48px;
}

.oneup-section.bg-secondary {
    background: var(--bg-secondary);
}

.oneup-section-inner {
    max-width: 1100px;
    margin: 0 auto;
}

.oneup-section-header {
    text-align: center;
    margin-bottom: 48px;
}

.oneup-eyebrow {
    font-family: 'EB Garamond', serif;
    font-style: italic;
    color: var(--orange);
    font-size: 1rem;
    letter-spacing: 4px;
    margin-bottom: 16px;
    display: block;
}

.oneup-title-serif {
    font-family: 'Noto Serif SC', serif;
}

.oneup-title-italic {
    font-family: 'EB Garamond', serif;
    font-style: italic;
}

.oneup-h1 {
    font-family: 'Noto Serif SC', serif;
    font-weight: 500;
    font-size: clamp(2rem, 4vw, 3rem);
    letter-spacing: 4px;
    color: var(--brown-darkest);
    margin: 0 0 20px;
    line-height: 1.4;
}

.oneup-h2 {
    font-family: 'Noto Serif SC', serif;
    font-weight: 500;
    font-size: clamp(1.6rem, 3vw, 2.2rem);
    letter-spacing: 3px;
    color: var(--brown-darkest);
    margin: 0 0 16px;
}

.oneup-h3 {
    font-family: 'Noto Serif SC', serif;
    font-weight: 500;
    font-size: 1.3rem;
    letter-spacing: 2px;
    color: var(--brown-darkest);
    margin: 0 0 12px;
}

.oneup-divider {
    width: 60px;
    height: 1px;
    background: var(--orange);
    margin: 24px auto;
    border: none;
}

.oneup-divider-left {
    width: 60px;
    height: 1px;
    background: var(--orange);
    margin: 18px 0;
    border: none;
}

.oneup-section-desc {
    font-size: 1rem;
    line-height: 2;
    color: var(--brown-light);
    max-width: 640px;
    margin: 0 auto;
}

/* ===================================================
   Tags & Badges
   =================================================== */
.oneup-tag {
    display: inline-block;
    padding: 4px 12px;
    background: var(--orange-tint);
    color: var(--orange-deep);
    font-size: 0.78rem;
    letter-spacing: 2px;
    border: 1px solid var(--orange-line);
    border-radius: 0;
}

.oneup-pill {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    background: var(--orange-tint);
    color: var(--orange-deep);
    font-size: 0.85rem;
    letter-spacing: 1.5px;
    border-radius: 999px;
}

/* ===================================================
   Footer
   =================================================== */
.oneup-footer {
    background: var(--brown-darkest);
    color: rgba(253, 250, 244, 0.5);
    padding: 36px 48px 28px;
    text-align: center;
    font-size: 0.85rem;
    letter-spacing: 1px;
}

.oneup-footer-brand {
    font-family: 'Noto Serif SC', serif;
    color: rgba(253, 250, 244, 0.85);
    font-size: 1rem;
    margin-bottom: 10px;
    letter-spacing: 4px;
}

.oneup-footer-meta {
    font-family: 'EB Garamond', serif;
    font-style: italic;
    letter-spacing: 2px;
    color: rgba(253, 250, 244, 0.4);
}

/* ===================================================
   Layout helpers
   =================================================== */
.oneup-container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 32px;
}

.oneup-container-narrow {
    max-width: 720px;
    margin: 0 auto;
    padding: 0 32px;
}

.oneup-page-content {
    padding: 56px 32px;
}

/* ===================================================
   Reveal on scroll
   =================================================== */
.oneup-reveal {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity 1s ease, transform 1s ease;
}
.oneup-reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ===================================================
   Utility classes
   =================================================== */
.oneup-text-orange { color: var(--orange); }
.oneup-text-brown { color: var(--brown-darkest); }
.oneup-text-light { color: var(--brown-light); }
.oneup-bg-secondary { background: var(--bg-secondary); }
.oneup-bg-card { background: var(--bg-card); }
.oneup-serif { font-family: 'Noto Serif SC', serif; }
.oneup-italic { font-family: 'EB Garamond', serif; font-style: italic; }
.oneup-mono { font-family: 'JetBrains Mono', Menlo, monospace; }

.oneup-letter-wide { letter-spacing: 3px; }
.oneup-letter-wider { letter-spacing: 5px; }

/* ===================================================
   Status colors（克制使用，仅评分场景）
   =================================================== */
.oneup-status-green { color: var(--status-green); }
.oneup-status-blue { color: var(--status-blue); }
.oneup-status-amber { color: var(--status-amber); }
.oneup-status-red { color: var(--status-red); }

.oneup-status-pill-green { background: rgba(90, 138, 94, 0.1); color: var(--status-green); padding: 4px 12px; border-radius: 0; border: 1px solid rgba(90, 138, 94, 0.3); font-size: 0.78rem; letter-spacing: 1.5px; }
.oneup-status-pill-blue { background: rgba(91, 123, 160, 0.1); color: var(--status-blue); padding: 4px 12px; border-radius: 0; border: 1px solid rgba(91, 123, 160, 0.3); font-size: 0.78rem; letter-spacing: 1.5px; }
.oneup-status-pill-amber { background: rgba(176, 124, 58, 0.1); color: var(--status-amber); padding: 4px 12px; border-radius: 0; border: 1px solid rgba(176, 124, 58, 0.3); font-size: 0.78rem; letter-spacing: 1.5px; }
.oneup-status-pill-red { background: rgba(160, 80, 80, 0.1); color: var(--status-red); padding: 4px 12px; border-radius: 0; border: 1px solid rgba(160, 80, 80, 0.3); font-size: 0.78rem; letter-spacing: 1.5px; }

/* ===================================================
   Responsive
   =================================================== */
@media (max-width: 900px) {
    .oneup-nav { padding: 14px 20px; flex-wrap: wrap; gap: 10px; }
    .oneup-nav-links { gap: 14px; font-size: 0.8rem; }
    .oneup-section { padding: 50px 20px; }
    .oneup-card { padding: 24px; }
    .oneup-page-content { padding: 40px 20px; }
    .oneup-footer { padding: 32px 20px 24px; }
}

@media (max-width: 480px) {
    .oneup-nav-brand-sub { display: none; }
    .oneup-h1 { letter-spacing: 2px; }
    .oneup-h2 { letter-spacing: 2px; }
}

/* ===================================================
   Print（隐藏导航与脚注，简化打印）
   =================================================== */
@media print {
    .oneup-nav, .oneup-footer, .no-print { display: none !important; }
    body.oneup-body { background: white; color: black; }
}
