/**
 * Theme Name: Dennis 6.0
 * Theme URI: https://www.zhaojiulong.com
 * Author: 杨过（前端工程师）
 * Author URI: https://www.zhaojiulong.com
 * Description: Dennis 6.0 完全自研 WordPress 主题 —— 基于 P0-04 A 案架构裁定，1:1 复刻 pc528.net 目标站布局
 * Version: 6.0.0
 * License: GPL-2.0+
 * License URI: http://www.gnu.org/licenses/gpl-2.0.html
 * Text Domain: dennis-6-0
 * Domain Path: /languages
 * Requires at least: 6.0
 * Requires PHP: 8.0
 */

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: "Microsoft YaHei", "PingFang SC", Helvetica, Arial, sans-serif;
  font-size: 14px;
  line-height: 1.8;
  color: var(--color-text-primary);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  text-decoration: underline;
}

ul, ol {
  list-style: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

input, textarea, select {
  font-family: inherit;
  font-size: inherit;
}

/* ============================================================
   1. Design Token — CSS Variables
   ============================================================ */
:root {
  /* ---- Color Tokens ---- */
  --color-primary:        #2563eb;
  --color-secondary:      #1d4ed8;
  --color-accent:         #f59e0b;
  --color-bg:             #f1f5f9;
  --color-card:           #ffffff;
  --color-nav-bg:         #ffffff;
  --color-topbar-bg:      #f1f5f9;
  --color-text-primary:   #0f172a;
  --color-text-secondary: #475569;
  --color-text-tertiary:  #94a3b8;
  --color-border:         #e2e8f0;
  --color-footer-bg:      #0f172a;
  --color-footer-text:    #94a3b8;
  --color-success:        #22c55e;
  --color-error:          #ef4444;
  --color-warning:        #f59e0b;

  /* ---- Spacing Tokens (8px grid) ---- */
  --space-xs:   4px;
  --space-sm:   8px;
  --space-md:   16px;
  --space-lg:   24px;
  --space-xl:   32px;
  --space-2xl:  48px;

  /* ---- Radius Tokens ---- */
  --radius-sm:   4px;
  --radius-md:   5px;
  --radius-lg:   8px;
  --radius-full: 50%;

  /* ---- Shadow Tokens ---- */
  --shadow-card:       inset 0 0 0 1px rgba(0,0,0,0.05);
  --shadow-nav:        0 3px 30px rgba(0,0,0,0.056);
  --shadow-dropdown:   inset 0 0 0 1px rgba(0,0,0,0.05), 0 2px 3px 1px rgba(0,0,0,0.073);
  --shadow-card-hover: 0 4px 12px rgba(0,0,0,0.08);

  /* ---- Layout Tokens ---- */
  --container-max:      1200px;
  --nav-max:            1300px;
  --topbar-height:      34px;
  --nav-height:         70px;
  --main-ratio:         70%;
  --sidebar-ratio:      30%;
  --gap-main-sidebar:   24px;

  /* ---- Typography Tokens ---- */
  --font-h1:    700 24px/1.4  var(--font-stack);
  --font-h2:    700 20px/1.5  var(--font-stack);
  --font-h3:    700 16px/1.5  var(--font-stack);
  --font-body:  400 14px/1.8  var(--font-stack);
  --font-caption: 400 12px/1.5 var(--font-stack);
  --font-nav:   400 15px/1.5  var(--font-stack);
  --font-topnav: 400 14px/1.5 var(--font-stack);
  --font-tag:   500 12px/1.4  var(--font-stack);

  --font-stack: "Microsoft YaHei", "PingFang SC", Helvetica, Arial, sans-serif;

  /* ---- Z-Index ---- */
  --z-dropdown:  100;
  --z-sticky:    1000;
  --z-modal:     2000;
  --z-toast:     3000;
}

/* ---- Dark Mode Tokens ---- */
[data-theme="dark"] {
  --color-primary:        #3b82f6;
  --color-secondary:      #60a5fa;
  --color-accent:         #fbbf24;
  --color-bg:             #0f172a;
  --color-card:           #1e293b;
  --color-nav-bg:         #1e293b;
  --color-topbar-bg:      #0b1120;
  --color-text-primary:   #f1f5f9;
  --color-text-secondary: #94a3b8;
  --color-text-tertiary:  #64748b;
  --color-border:         #334155;
  --color-footer-bg:      #0b1120;
  --color-footer-text:    #64748b;
  --color-success:        #4ade80;
  --color-error:          #f87171;
  --color-warning:        #fbbf24;

  --shadow-card:       inset 0 0 0 1px rgba(255,255,255,0.06);
  --shadow-nav:        0 3px 30px rgba(0,0,0,0.2);
  --shadow-dropdown:   inset 0 0 0 1px rgba(255,255,255,0.06), 0 2px 3px 1px rgba(0,0,0,0.2);
  --shadow-card-hover: 0 0 0 1px #3b82f6;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --color-primary:        #3b82f6;
    --color-secondary:      #60a5fa;
    --color-accent:         #fbbf24;
    --color-bg:             #0f172a;
    --color-card:           #1e293b;
    --color-nav-bg:         #1e293b;
    --color-topbar-bg:      #0b1120;
    --color-text-primary:   #f1f5f9;
    --color-text-secondary: #94a3b8;
    --color-text-tertiary:  #64748b;
    --color-border:         #334155;
    --color-footer-bg:      #0b1120;
    --color-footer-text:    #64748b;
    --color-success:        #4ade80;
    --color-error:          #f87171;
    --color-warning:        #fbbf24;

    --shadow-card:       inset 0 0 0 1px rgba(255,255,255,0.06);
    --shadow-nav:        0 3px 30px rgba(0,0,0,0.2);
    --shadow-dropdown:   inset 0 0 0 1px rgba(255,255,255,0.06), 0 2px 3px 1px rgba(0,0,0,0.2);
    --shadow-card-hover: 0 0 0 1px #3b82f6;
  }
}