/*
Theme Name: VOF Theme
Theme URI: https://vapeodmfactory.com
Author: VOF
Description: VOF 独立经典 PHP 主题
Version: 1.0.0
Requires at least: 6.0
Tested up to: 6.9
Requires PHP: 8.0
Text Domain: vof-theme
*/

/* ========================================
   全局 CSS 变量
   ======================================== */
:root {
    --bg:             #FAF8F5;
    --surface:        #FFFFFF;
    --surface-alt:    #F3F1EE;
    --ink:            #1A1D23;
    --ink-light:      #3A3D45;
    --accent:         #0057FF;
    --accent-light:   #E8F0FF;
    --accent-hover:   #0046CC;
    --muted:          #6B7280;
    --border:         #E5E3DF;
    --border-light:   #EEEDE9;
    --warning:        #B91C1C;
    --warning-bg:     #FEF2F2;

    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-xl: 32px;

    --nav-height: 72px;

    --font-heading: 'Barlow', sans-serif;
    --font-body:    'Source Sans 3', sans-serif;
    --font-mono:    'JetBrains Mono', monospace;
}

/* ========================================
   Reset & Base
   ======================================== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-body);
    background: var(--bg);
    color: var(--ink);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

a {
    color: inherit;
    text-decoration: none;
}

ul, ol {
    list-style: none;
    padding: 0;
}

/* ========================================
   排版
   ======================================== */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    color: var(--ink);
    line-height: 1.1;
}

h1 {
    font-size: 3.5rem;
    font-weight: 700;
    letter-spacing: -0.05em;
    line-height: 1.05;
    margin-bottom: 1.25rem;
}

h2 {
    font-size: 2.5rem;
    font-weight: 700;
    letter-spacing: -0.04em;
    line-height: 1.15;
    margin-bottom: 2rem;
}

h3 {
    font-size: 1.5rem;
    font-weight: 600;
    letter-spacing: -0.02em;
}

h4 {
    font-size: 1.125rem;
    font-weight: 600;
    letter-spacing: -0.01em;
}

h5 {
    font-size: 0.9375rem;
    font-weight: 700;
}

/* ========================================
   工具类
   ======================================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2.5rem;
}

.container-narrow {
    max-width: 820px;
    margin: 0 auto;
    padding: 0 2.5rem;
}

.label-caps {
    font-family: var(--font-mono);
    text-transform: uppercase;
    letter-spacing: 0.2em;
    font-size: 0.6875rem;
    font-weight: 500;
    color: var(--accent);
    display: block;
    margin-bottom: 1rem;
}

.btn-primary {
    background: var(--accent);
    color: #fff;
    padding: 1rem 2.25rem;
    border-radius: var(--radius-sm);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.875rem;
    display: inline-block;
    font-family: var(--font-body);
    transition: background 0.25s, transform 0.2s;
    border: none;
    cursor: pointer;
}

.btn-primary:hover {
    background: var(--accent-hover);
    transform: translateY(-1px);
}

.btn-secondary {
    border: 1.5px solid var(--ink);
    color: var(--ink);
    padding: 0.9375rem 2.25rem;
    border-radius: var(--radius-sm);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.875rem;
    display: inline-block;
    font-family: var(--font-body);
    transition: background 0.25s, color 0.25s;
    background: transparent;
    cursor: pointer;
}

.btn-secondary:hover {
    background: var(--ink);
    color: #fff;
}

/* Breadcrumb */
.vof-breadcrumb {
    list-style: none;
    padding: 0;
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.vof-breadcrumb li {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--muted);
}

.vof-breadcrumb li a {
    color: var(--muted);
    text-decoration: none;
    transition: color 0.2s;
}

.vof-breadcrumb li a:hover { color: var(--accent); }

.vof-breadcrumb li[aria-current="page"] {
    color: var(--ink);
    font-weight: 500;
}
/* Rank Math 面包屑 */
.rank-math-breadcrumb p {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--muted);
    margin: 0;
}

.rank-math-breadcrumb a {
    color: var(--muted);
    text-decoration: none;
    transition: color 0.2s;
}

.rank-math-breadcrumb a:hover { color: var(--accent); }

.rank-math-breadcrumb .separator { color: var(--border); }

.rank-math-breadcrumb .last {
    color: var(--ink);
    font-weight: 500;
}

/* ========================================
   响应式
   ======================================== */
@media (max-width: 1024px) {
    h1 { font-size: 2.625rem; }
    h2 { font-size: 2rem; }
    .container { padding: 0 1.5rem; }
    .container-narrow { padding: 0 1.5rem; }
}

@media (max-width: 768px) {
    h1 { font-size: 2.125rem; }
    h2 { font-size: 1.75rem; }
    .container { padding: 0 1.25rem; }
    .container-narrow { padding: 0 1.25rem; }
}

@media (max-width: 480px) {
    h1 { font-size: 1.875rem; }
    h2 { font-size: 1.5rem; }
}