/*
Theme Name: Snipaste Theme
Theme URI: https://example.com/snipaste-theme
Author: Your Name
Author URI: https://example.com
Description: 一个简洁现代的软件产品展示主题，灵感来自 Snipaste 官网。支持自定义链接和多平台下载按钮。
Version: 1.0.0
Requires at least: 5.0
Tested up to: 6.4
Requires PHP: 7.4
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: snipaste-theme
Tags: one-column, custom-colors, custom-menu, featured-images, translation-ready
*/

/* ========================================
   CSS Variables / Design Tokens
   ======================================== */
:root {
    --color-primary: #0ea5e9;
    --color-primary-hover: #0284c7;
    --color-secondary: #64748b;
    --color-background: #ffffff;
    --color-foreground: #0f172a;
    --color-muted: #f1f5f9;
    --color-muted-foreground: #64748b;
    --color-border: #e2e8f0;
    --color-card: #ffffff;
    --color-card-foreground: #0f172a;
    --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --radius: 0.5rem;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background-color: var(--color-background);
    color: var(--color-foreground);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

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

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

/* ========================================
   Layout Utilities
   ======================================== */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

@media (min-width: 640px) {
    .container {
        padding: 0 1.5rem;
    }
}

/* ========================================
   Header / Navigation
   ======================================== */
.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--color-border);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 4rem;
}

.site-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
}

.site-logo svg {
    width: 2rem;
    height: 2rem;
}

/* Desktop Navigation */
.main-nav {
    display: none;
}

@media (min-width: 768px) {
    .main-nav {
        display: flex;
        align-items: center;
        gap: 2rem;
    }
}

.nav-link {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-muted-foreground);
    transition: color 0.2s;
}

.nav-link:hover {
    color: var(--color-primary);
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: flex;
    padding: 0.5rem;
    background: none;
    border: none;
    cursor: pointer;
}

@media (min-width: 768px) {
    .mobile-menu-toggle {
        display: none;
    }
}

/* Mobile Navigation */
.mobile-nav {
    display: none;
    padding: 1rem;
    border-top: 1px solid var(--color-border);
    background-color: var(--color-background);
}

.mobile-nav.active {
    display: block;
}

.mobile-nav-link {
    display: block;
    padding: 0.75rem 0;
    font-size: 0.875rem;
    color: var(--color-muted-foreground);
    border-bottom: 1px solid var(--color-border);
}

.mobile-nav-link:hover {
    color: var(--color-primary);
}

/* ========================================
   Hero Section
   ======================================== */
.hero-section {
    padding: 5rem 0;
    text-align: center;
    background: linear-gradient(to bottom, var(--color-muted), var(--color-background));
}

@media (min-width: 768px) {
    .hero-section {
        padding: 7rem 0;
    }
}

.hero-title {
    font-size: 2.5rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    color: var(--color-foreground);
}

@media (min-width: 768px) {
    .hero-title {
        font-size: 3.5rem;
    }
}

.hero-description {
    font-size: 1.125rem;
    color: var(--color-muted-foreground);
    max-width: 600px;
    margin: 0 auto 2.5rem;
    line-height: 1.7;
}

/* Download Buttons */
.download-buttons {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    justify-content: center;
    align-items: center;
}

@media (min-width: 640px) {
    .download-buttons {
        flex-direction: row;
    }
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.875rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius);
    cursor: pointer;
    transition: all 0.2s;
    border: none;
}

.btn-primary {
    background-color: var(--color-primary);
    color: #ffffff;
}

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

.btn-outline {
    background-color: transparent;
    color: var(--color-foreground);
    border: 2px solid var(--color-border);
}

.btn-outline:hover {
    background-color: var(--color-muted);
    border-color: var(--color-primary);
}

/* Dropdown */
.dropdown {
    position: relative;
}

.dropdown-content {
    display: none;
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    min-width: 200px;
    margin-top: 0.5rem;
    padding: 0.5rem;
    background-color: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
    z-index: 10;
}

.dropdown:hover .dropdown-content,
.dropdown.active .dropdown-content {
    display: block;
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    font-size: 0.875rem;
    color: var(--color-foreground);
    border-radius: calc(var(--radius) - 2px);
    transition: background-color 0.2s;
}

.dropdown-item:hover {
    background-color: var(--color-muted);
}

.dropdown-item small {
    color: var(--color-muted-foreground);
    margin-left: auto;
}

/* Hero Shortcut */
.hero-shortcut {
    margin-top: 2rem;
    font-size: 0.875rem;
    color: var(--color-muted-foreground);
}

.hero-shortcut kbd {
    display: inline-block;
    padding: 0.25rem 0.5rem;
    margin: 0 0.25rem;
    font-family: monospace;
    font-size: 0.75rem;
    background-color: var(--color-muted);
    border: 1px solid var(--color-border);
    border-radius: 4px;
}

/* ========================================
   Features Section
   ======================================== */
.features-section {
    padding: 5rem 0;
}

.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.section-description {
    font-size: 1.125rem;
    color: var(--color-muted-foreground);
    max-width: 600px;
    margin: 0 auto;
}

.features-grid {
    display: grid;
    gap: 2rem;
}

@media (min-width: 768px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.feature-card {
    padding: 2rem;
    background-color: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    transition: all 0.3s;
}

.feature-card:hover {
    border-color: var(--color-primary);
    box-shadow: 0 10px 40px rgba(14, 165, 233, 0.1);
    transform: translateY(-4px);
}

.feature-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 3rem;
    height: 3rem;
    margin-bottom: 1rem;
    background-color: rgba(14, 165, 233, 0.1);
    border-radius: var(--radius);
    color: var(--color-primary);
}

.feature-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.feature-description {
    font-size: 0.9375rem;
    color: var(--color-muted-foreground);
    line-height: 1.7;
}

/* ========================================
   Support Section
   ======================================== */
.support-section {
    padding: 5rem 0;
    background-color: var(--color-muted);
}

.support-grid {
    display: grid;
    gap: 2rem;
}

@media (min-width: 768px) {
    .support-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.support-card {
    padding: 2rem;
    text-align: center;
    background-color: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    transition: all 0.3s;
}

.support-card:hover {
    border-color: var(--color-primary);
    box-shadow: 0 10px 40px rgba(14, 165, 233, 0.1);
}

.support-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 4rem;
    height: 4rem;
    margin: 0 auto 1rem;
    background-color: rgba(14, 165, 233, 0.1);
    border-radius: 50%;
    color: var(--color-primary);
}

.support-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.support-description {
    font-size: 0.9375rem;
    color: var(--color-muted-foreground);
    margin-bottom: 1rem;
}

.support-link {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-primary);
}

.support-link:hover {
    text-decoration: underline;
}

/* ========================================
   Footer
   ======================================== */
.site-footer {
    padding: 3rem 0;
    border-top: 1px solid var(--color-border);
}

.footer-inner {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    align-items: center;
    text-align: center;
}

@media (min-width: 768px) {
    .footer-inner {
        flex-direction: row;
        justify-content: space-between;
        text-align: left;
    }
}

.footer-copyright {
    font-size: 0.875rem;
    color: var(--color-muted-foreground);
}

.footer-links {
    display: flex;
    gap: 1.5rem;
}

.footer-link {
    font-size: 0.875rem;
    color: var(--color-muted-foreground);
    transition: color 0.2s;
}

.footer-link:hover {
    color: var(--color-primary);
}

/* ========================================
   Utility Classes
   ======================================== */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.text-center {
    text-align: center;
}

.text-muted {
    color: var(--color-muted-foreground);
}