/*
Theme Name: Bruce Resume
Theme URI: https://cvbrucenascloud.com
Author: Bruce Yuan
Author URI: https://cvbrucenascloud.com
Description: A clean, modern resume and portfolio WordPress theme. Designed for professionals who want to showcase their experience, skills, and projects with elegance. Fully responsive, print-friendly, and optimized for performance.
Version: 1.0.0
License: GPL v2 or later
License URI: https://www.gnu.org/licenses/gpl-2.0.html
Text Domain: bruce-resume
Tags: one-column, custom-colors, custom-logo, custom-menu, featured-images, full-width-template, theme-options, threaded-comments, translation-ready, blog, portfolio
*/

/* ============================================
   CSS Custom Properties (Design Tokens)
   ============================================ */
:root {
    --color-primary: #2563eb;
    --color-primary-dark: #1d4ed8;
    --color-primary-light: #dbeafe;
    --color-text: #1e293b;
    --color-text-secondary: #64748b;
    --color-text-light: #94a3b8;
    --color-bg: #ffffff;
    --color-bg-alt: #f8fafc;
    --color-bg-card: #ffffff;
    --color-border: #e2e8f0;
    --color-border-light: #f1f5f9;
    --color-success: #10b981;
    --color-warning: #f59e0b;
    --color-danger: #ef4444;

    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', Consolas, monospace;

    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    --spacing-4xl: 6rem;

    --max-width: 960px;
    --border-radius: 8px;
    --border-radius-lg: 12px;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 10px 25px -5px rgba(0, 0, 0, 0.08), 0 4px 10px -6px rgba(0, 0, 0, 0.04);

    --transition: 0.2s ease;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family);
    font-size: 16px;
    line-height: 1.7;
    color: var(--color-text);
    background-color: var(--color-bg);
    overflow-x: hidden;
}

/* ============================================
   Typography
   ============================================ */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.3;
    color: var(--color-text);
    margin-bottom: var(--spacing-md);
}

h1 { font-size: 2.5rem; letter-spacing: -0.02em; }
h2 { font-size: 1.875rem; letter-spacing: -0.01em; }
h3 { font-size: 1.25rem; }
h4 { font-size: 1.125rem; }

p {
    margin-bottom: var(--spacing-md);
}

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

a:hover {
    color: var(--color-primary-dark);
}

ul, ol {
    padding-left: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

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

code {
    font-family: var(--font-mono);
    background: var(--color-bg-alt);
    padding: 0.15em 0.4em;
    border-radius: 4px;
    font-size: 0.875em;
    color: var(--color-primary);
}

::selection {
    background: var(--color-primary-light);
    color: var(--color-primary-dark);
}

/* ============================================
   Header & Navigation
   ============================================ */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
    transition: box-shadow var(--transition);
}

.site-header.scrolled {
    box-shadow: var(--shadow-sm);
}

.header-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-xl);
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.site-branding {
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.01em;
}

.site-branding a {
    color: var(--color-text);
    text-decoration: none;
}

.site-branding a:hover {
    color: var(--color-primary);
}

.main-navigation ul {
    list-style: none;
    display: flex;
    gap: var(--spacing-xl);
    padding: 0;
    margin: 0;
}

.main-navigation a {
    color: var(--color-text-secondary);
    font-size: 0.9375rem;
    font-weight: 500;
    text-decoration: none;
    transition: color var(--transition);
    position: relative;
}

.main-navigation a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-primary);
    transition: width var(--transition);
}

.main-navigation a:hover,
.main-navigation a.active {
    color: var(--color-text);
}

.main-navigation a:hover::after,
.main-navigation a.active::after {
    width: 100%;
}

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-sm);
    color: var(--color-text);
}

.mobile-menu-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: currentColor;
    margin: 5px 0;
    transition: transform 0.3s ease, opacity 0.3s ease;
    border-radius: 1px;
}

/* ============================================
   Hero / About Section
   ============================================ */
.hero-section {
    padding: var(--spacing-4xl) var(--spacing-xl) var(--spacing-3xl);
    margin-top: 64px;
    text-align: center;
    background: linear-gradient(180deg, var(--color-bg-alt) 0%, var(--color-bg) 100%);
}

.hero-inner {
    max-width: var(--max-width);
    margin: 0 auto;
}

.hero-avatar {
    width: 140px;
    height: 140px;
    border-radius: 50%;
    object-fit: cover;
    border: 4px solid var(--color-bg);
    box-shadow: var(--shadow-lg);
    margin-bottom: var(--spacing-xl);
}

.hero-name {
    font-size: 3rem;
    font-weight: 800;
    letter-spacing: -0.03em;
    margin-bottom: var(--spacing-sm);
    background: linear-gradient(135deg, var(--color-text) 0%, var(--color-primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-title {
    font-size: 1.25rem;
    color: var(--color-text-secondary);
    font-weight: 400;
    margin-bottom: var(--spacing-lg);
}

.hero-bio {
    max-width: 640px;
    margin: 0 auto var(--spacing-xl);
    font-size: 1.0625rem;
    color: var(--color-text-secondary);
    line-height: 1.8;
}

.hero-links {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.hero-links .btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--border-radius);
    font-size: 0.9375rem;
    font-weight: 600;
    transition: all var(--transition);
    text-decoration: none;
}

.hero-links .btn-primary {
    background: var(--color-primary);
    color: #fff;
}

.hero-links .btn-primary:hover {
    background: var(--color-primary-dark);
    color: #fff;
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.hero-links .btn-outline {
    border: 2px solid var(--color-border);
    color: var(--color-text);
}

.hero-links .btn-outline:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    transform: translateY(-1px);
}

/* ============================================
   Section Common Styles
   ============================================ */
.section {
    padding: var(--spacing-3xl) var(--spacing-xl);
}

.section-alt {
    background: var(--color-bg-alt);
}

.section-inner {
    max-width: var(--max-width);
    margin: 0 auto;
}

.section-title {
    font-size: 1.75rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-3xl);
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 48px;
    height: 3px;
    background: var(--color-primary);
    margin: var(--spacing-md) auto 0;
    border-radius: 2px;
}

/* ============================================
   Experience Timeline
   ============================================ */
.timeline {
    position: relative;
    padding-left: var(--spacing-xl);
    border-left: 2px solid var(--color-border);
}

.timeline-item {
    position: relative;
    margin-bottom: var(--spacing-2xl);
    padding-left: var(--spacing-xl);
}

.timeline-item:last-child {
    margin-bottom: 0;
}

.timeline-dot {
    position: absolute;
    left: calc(-1 * var(--spacing-xl) - 8px);
    top: 4px;
    width: 14px;
    height: 14px;
    background: var(--color-primary);
    border: 3px solid var(--color-bg);
    border-radius: 50%;
    box-shadow: 0 0 0 3px var(--color-primary);
}

.timeline-date {
    display: inline-block;
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--color-primary);
    background: var(--color-primary-light);
    padding: 0.2em 0.75em;
    border-radius: 100px;
    margin-bottom: var(--spacing-sm);
}

.timeline-role {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0;
}

.timeline-company {
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-sm);
}

.timeline-desc {
    color: var(--color-text-secondary);
    font-size: 0.9375rem;
}

.timeline-desc ul {
    margin-bottom: 0;
}

.timeline-desc li {
    margin-bottom: var(--spacing-xs);
}

/* ============================================
   Education
   ============================================ */
.education-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-xl);
}

.education-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
    transition: box-shadow var(--transition), transform var(--transition);
}

.education-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.education-degree {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

.education-school {
    color: var(--color-primary);
    font-weight: 500;
    margin-bottom: var(--spacing-xs);
}

.education-year {
    font-size: 0.875rem;
    color: var(--color-text-light);
}

/* ============================================
   Skills
   ============================================ */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
}

.skill-category {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
}

.skill-category h3 {
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-primary);
    margin-bottom: var(--spacing-lg);
    font-weight: 600;
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.skill-tag {
    display: inline-block;
    padding: 0.3em 0.75em;
    background: var(--color-bg-alt);
    border: 1px solid var(--color-border);
    border-radius: 100px;
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    transition: all var(--transition);
}

.skill-tag:hover {
    background: var(--color-primary-light);
    border-color: var(--color-primary);
    color: var(--color-primary);
}

/* ============================================
   Projects
   ============================================ */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
}

.project-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    transition: box-shadow var(--transition), transform var(--transition);
}

.project-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-3px);
}

.project-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
    background: var(--color-bg-alt);
}

.project-body {
    padding: var(--spacing-xl);
}

.project-title {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

.project-desc {
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
    line-height: 1.6;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-md);
}

.project-tech span {
    font-size: 0.75rem;
    font-weight: 500;
    background: var(--color-primary-light);
    color: var(--color-primary);
    padding: 0.15em 0.6em;
    border-radius: 100px;
}

.project-link {
    font-size: 0.875rem;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
}

/* ============================================
   Contact Section
   ============================================ */
.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-xl);
    text-align: center;
}

.contact-item {
    padding: var(--spacing-xl);
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-lg);
    transition: box-shadow var(--transition), transform var(--transition);
}

.contact-item:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.contact-icon {
    width: 48px;
    height: 48px;
    margin: 0 auto var(--spacing-md);
    background: var(--color-primary-light);
    color: var(--color-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
}

.contact-label {
    font-size: 0.8125rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-xs);
}

.contact-value {
    font-weight: 600;
    color: var(--color-text);
    word-break: break-all;
}

.contact-value a {
    color: var(--color-text);
}

.contact-value a:hover {
    color: var(--color-primary);
}

/* ============================================
   Footer
   ============================================ */
.site-footer {
    background: var(--color-bg-alt);
    border-top: 1px solid var(--color-border);
    padding: var(--spacing-xl);
    text-align: center;
    font-size: 0.875rem;
    color: var(--color-text-light);
}

.site-footer a {
    color: var(--color-text-secondary);
}

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

/* ============================================
   Blog / Page Templates
   ============================================ */
.page-content,
.single-content {
    max-width: 800px;
    margin: 80px auto 0;
    padding: var(--spacing-3xl) var(--spacing-xl);
}

.page-content h1,
.single-content h1 {
    font-size: 2.25rem;
    margin-bottom: var(--spacing-xl);
}

.single-meta {
    color: var(--color-text-light);
    font-size: 0.875rem;
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-xl);
    border-bottom: 1px solid var(--color-border);
}

/* ============================================
   404 Page
   ============================================ */
.error-404 {
    text-align: center;
    padding: var(--spacing-4xl) var(--spacing-xl);
    margin-top: 64px;
    min-height: 60vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.error-404 h1 {
    font-size: 6rem;
    font-weight: 800;
    color: var(--color-primary);
    margin-bottom: 0;
    line-height: 1;
}

.error-404 p {
    font-size: 1.25rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-xl);
}

/* ============================================
   Print Styles
   ============================================ */
@media print {
    .site-header,
    .site-footer,
    .hero-links,
    .mobile-menu-toggle {
        display: none !important;
    }

    .site-header {
        position: static;
    }

    .hero-section {
        margin-top: 0;
        padding-top: var(--spacing-xl);
    }

    .hero-name {
        -webkit-text-fill-color: var(--color-text);
        font-size: 2rem;
    }

    body {
        font-size: 13px;
        line-height: 1.5;
        color: #000;
    }

    .section {
        padding: var(--spacing-lg) 0;
        page-break-inside: avoid;
    }

    .timeline {
        border-left-color: #ccc;
    }

    .timeline-dot {
        box-shadow: 0 0 0 3px #000;
        background: #000;
    }

    .skill-tag,
    .project-tech span {
        border: 1px solid #999;
        background: none;
        color: #000;
    }

    .project-card,
    .education-card,
    .contact-item,
    .skill-category {
        box-shadow: none;
        border: 1px solid #ddd;
        page-break-inside: avoid;
    }

    a {
        color: #000;
        text-decoration: underline;
    }
}

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 768px) {
    html {
        scroll-padding-top: 60px;
    }

    .site-header {
        height: 60px;
    }

    .header-inner {
        height: 60px;
        padding: 0 var(--spacing-md);
    }

    .main-navigation {
        position: fixed;
        top: 60px;
        left: 0;
        right: 0;
        bottom: 0;
        background: var(--color-bg);
        display: none;
        flex-direction: column;
        padding: var(--spacing-xl);
        overflow-y: auto;
    }

    .main-navigation.active {
        display: flex;
    }

    .main-navigation ul {
        flex-direction: column;
        gap: 0;
    }

    .main-navigation li {
        border-bottom: 1px solid var(--color-border-light);
    }

    .main-navigation a {
        display: block;
        padding: var(--spacing-md) 0;
        font-size: 1.125rem;
    }

    .main-navigation a::after {
        display: none;
    }

    .mobile-menu-toggle {
        display: block;
    }

    .hero-section {
        padding: var(--spacing-3xl) var(--spacing-md) var(--spacing-2xl);
        margin-top: 60px;
    }

    .hero-name {
        font-size: 2rem;
    }

    .hero-title {
        font-size: 1.0625rem;
    }

    .section {
        padding: var(--spacing-2xl) var(--spacing-md);
    }

    .section-title {
        font-size: 1.5rem;
    }

    .timeline {
        padding-left: var(--spacing-md);
    }

    .timeline-item {
        padding-left: var(--spacing-lg);
    }

    .timeline-dot {
        left: calc(-1 * var(--spacing-md) - 8px);
    }

    .projects-grid,
    .skills-grid,
    .education-grid,
    .contact-grid {
        grid-template-columns: 1fr;
    }

    .h1 { font-size: 2rem; }
    .h2 { font-size: 1.5rem; }
}

@media (max-width: 480px) {
    .hero-name {
        font-size: 1.75rem;
    }

    .hero-links {
        flex-direction: column;
        align-items: stretch;
    }

    .hero-links .btn {
        justify-content: center;
    }

    .hero-avatar {
        width: 110px;
        height: 110px;
    }
}

/* ============================================
   Animations
   ============================================ */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(24px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-in {
    animation: fadeInUp 0.6s ease forwards;
}

/* ============================================
   WordPress Core Styles
   ============================================ */
.wp-caption {
    max-width: 100%;
    margin-bottom: var(--spacing-md);
}

.wp-caption-text {
    font-size: 0.875rem;
    color: var(--color-text-light);
    text-align: center;
    margin-top: var(--spacing-sm);
}

.screen-reader-text {
    clip: rect(1px, 1px, 1px, 1px);
    position: absolute !important;
    height: 1px;
    width: 1px;
    overflow: hidden;
    word-wrap: normal !important;
}

.alignleft { float: left; margin-right: var(--spacing-lg); margin-bottom: var(--spacing-md); }
.alignright { float: right; margin-left: var(--spacing-lg); margin-bottom: var(--spacing-md); }
.aligncenter { display: block; margin-left: auto; margin-right: auto; margin-bottom: var(--spacing-md); }
.alignwide { max-width: 1100px; margin-left: auto; margin-right: auto; }
.alignfull { max-width: 100vw; margin-left: calc(-50vw + 50%); margin-right: calc(-50vw + 50%); }

/* Block Editor Styles */
.has-text-align-left { text-align: left; }
.has-text-align-center { text-align: center; }
.has-text-align-right { text-align: right; }

.wp-block-image img { border-radius: var(--border-radius); }
.wp-block-quote {
    border-left: 4px solid var(--color-primary);
    padding: var(--spacing-md) var(--spacing-xl);
    margin: var(--spacing-xl) 0;
    background: var(--color-bg-alt);
    border-radius: 0 var(--border-radius) var(--border-radius) 0;
    font-style: italic;
}

.wp-block-quote cite {
    display: block;
    margin-top: var(--spacing-sm);
    font-size: 0.875rem;
    color: var(--color-text-light);
    font-style: normal;
}

/* Gallery */
.gallery {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.gallery-item img {
    border-radius: var(--border-radius);
    width: 100%;
}

/* Comments */
.comments-area {
    max-width: 800px;
    margin: 0 auto;
    padding: var(--spacing-2xl) var(--spacing-xl);
}

.comment-list {
    list-style: none;
    padding: 0;
}

.comment {
    border-bottom: 1px solid var(--color-border-light);
    padding: var(--spacing-lg) 0;
}

.comment-meta {
    font-size: 0.875rem;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-sm);
}

.comment-author {
    font-weight: 600;
    color: var(--color-text);
}

/* Search */
.search-form {
    display: flex;
    gap: var(--spacing-sm);
}

.search-form input[type="search"] {
    flex: 1;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    font-family: var(--font-family);
    font-size: 0.9375rem;
}

.search-form input[type="submit"] {
    background: var(--color-primary);
    color: #fff;
    border: none;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--border-radius);
    font-family: var(--font-family);
    font-weight: 600;
    cursor: pointer;
}

.search-form input[type="submit"]:hover {
    background: var(--color-primary-dark);
}