/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --bg-color: #f7f5f2;
    --text-color: #3a3835;
    --secondary-text: #6f6d68;
    --border-color: #e8e4dd;
    --accent-color: #5c6d8a;
    --accent-soft: rgba(92, 109, 138, 0.12);
    --hover-bg: #f0ece6;
    --card-bg: #fdfcfa;
    --shadow: 0 2px 12px rgba(58, 56, 53, 0.06), 0 1px 3px rgba(58, 56, 53, 0.04);
    --radius-sm: 10px;
    --radius-md: 14px;
    /* Sticky nav (70px) + small gap so section titles clear the bar */
    --nav-scroll-margin: calc(70px + 1rem);
}

/* Dark theme — soft contrast, warm neutrals */
[data-theme="dark"] {
    --bg-color: #1c1b19;
    --text-color: #ebe9e4;
    --secondary-text: #a8a6a0;
    --border-color: #3d3b37;
    --accent-color: #9dafc4;
    --accent-soft: rgba(157, 175, 196, 0.15);
    --hover-bg: #2a2825;
    --card-bg: #23211e;
    --shadow: 0 4px 24px rgba(0, 0, 0, 0.25), 0 2px 8px rgba(0, 0, 0, 0.15);
}

/* Auto dark mode based on system preference (only when no manual preference is set) */
@media (prefers-color-scheme: dark) {
    :root:not([data-theme]) {
        --bg-color: #1c1b19;
        --text-color: #ebe9e4;
        --secondary-text: #a8a6a0;
        --border-color: #3d3b37;
        --accent-color: #9dafc4;
        --accent-soft: rgba(157, 175, 196, 0.15);
        --hover-bg: #2a2825;
        --card-bg: #23211e;
        --shadow: 0 4px 24px rgba(0, 0, 0, 0.25), 0 2px 8px rgba(0, 0, 0, 0.15);
    }
}

html {
    scroll-padding-top: var(--nav-scroll-margin);
}

body {
    font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.65;
    font-size: 16px;
    font-weight: 400;
    letter-spacing: 0.01em;
    transition: background-color 0.35s ease, color 0.35s ease;
}

/* Navigation Header */
.nav-header {
    position: sticky;
    top: 0;
    background-color: var(--bg-color);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    transition: background-color 0.35s ease, border-color 0.35s ease;
    backdrop-filter: blur(14px) saturate(1.1);
    background-color: rgba(247, 245, 242, 0.88);
}

[data-theme="dark"] .nav-header {
    background-color: rgba(28, 27, 25, 0.88);
    border-bottom-color: var(--border-color);
}

@media (prefers-color-scheme: dark) {
    :root:not([data-theme]) .nav-header {
        background-color: rgba(28, 27, 25, 0.88);
        border-bottom-color: var(--border-color);
    }
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.2rem;
    font-weight: 600;
    letter-spacing: -0.02em;
    color: var(--text-color);
    text-decoration: none;
    transition: all 0.3s ease;
}

.nav-logo:hover {
    color: var(--accent-color);
}

.nav-logo:hover .logo-svg {
    transform: scale(1.05);
    filter: drop-shadow(0 2px 10px var(--accent-soft));
}

.logo-svg {
    flex-shrink: 0;
    transition: all 0.3s ease;
    color: var(--accent-color);
}

[data-theme="dark"] .logo-svg {
    color: var(--accent-color);
}

@media (prefers-color-scheme: dark) {
    :root:not([data-theme]) .logo-svg {
        color: var(--accent-color);
    }
}

.logo-text {
    white-space: nowrap;
}

@media (max-width: 640px) {
    .logo-text {
        display: none;
    }
    
    .logo-svg {
        width: 32px;
        height: 36px;
    }
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 30px;
    margin: 0;
    padding: 0;
    align-items: center;
}

.nav-link {
    color: var(--secondary-text);
    text-decoration: none;
    font-size: 0.9375rem;
    font-weight: 500;
    transition: color 0.25s ease;
    position: relative;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--accent-color);
    transition: width 0.3s ease;
}

.nav-link:hover::after {
    width: 100%;
}

.nav-link.active {
    color: var(--accent-color);
}

.nav-link.active::after {
    width: 100%;
}

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.hamburger {
    display: block;
    width: 25px;
    height: 2px;
    background-color: var(--text-color);
    position: relative;
    transition: background-color 0.3s ease;
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    width: 25px;
    height: 2px;
    background-color: var(--text-color);
    transition: all 0.3s ease;
}

.hamburger::before {
    top: -8px;
}

.hamburger::after {
    top: 8px;
}

.mobile-menu-toggle.active .hamburger {
    background-color: transparent;
}

.mobile-menu-toggle.active .hamburger::before {
    top: 0;
    transform: rotate(45deg);
}

.mobile-menu-toggle.active .hamburger::after {
    top: 0;
    transform: rotate(-45deg);
}

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 40px 20px;
}

/* Theme Toggle Button */
.theme-toggle {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    border: 1px solid var(--border-color);
    background-color: var(--card-bg);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    box-shadow: var(--shadow);
}

.theme-toggle:hover {
    transform: scale(1.1);
    background-color: var(--hover-bg);
}

.theme-toggle:active {
    transform: scale(0.95);
}

.theme-toggle svg {
    position: absolute;
    transition: all 0.3s ease;
    color: var(--text-color);
}

.theme-toggle .sun-icon {
    opacity: 1;
    transform: rotate(0deg);
    color: #f59e0b;
}

.theme-toggle .moon-icon {
    opacity: 0;
    transform: rotate(180deg);
}

[data-theme="dark"] .theme-toggle {
    background-color: var(--hover-bg);
    border-color: var(--border-color);
}

[data-theme="dark"] .theme-toggle:hover {
    background-color: var(--card-bg);
    box-shadow: 0 4px 20px var(--accent-soft);
}

[data-theme="dark"] .theme-toggle .sun-icon {
    opacity: 0;
    transform: rotate(180deg);
}

[data-theme="dark"] .theme-toggle .moon-icon {
    opacity: 1;
    transform: rotate(0deg);
    color: #fbbf24;
    filter: brightness(1.3);
}

/* Auto dark mode icon states */
@media (prefers-color-scheme: dark) {
    :root:not([data-theme]) .theme-toggle {
        background-color: var(--hover-bg);
        border-color: var(--border-color);
    }
    
    :root:not([data-theme]) .theme-toggle:hover {
        background-color: var(--card-bg);
        box-shadow: 0 4px 20px var(--accent-soft);
    }
    
    :root:not([data-theme]) .theme-toggle .sun-icon {
        opacity: 0;
        transform: rotate(180deg);
    }
    
    :root:not([data-theme]) .theme-toggle .moon-icon {
        opacity: 1;
        transform: rotate(0deg);
        color: #fbbf24;
        filter: brightness(1.3);
    }
}

/* Hero — avatar left, name & contact right (portfolio-style) */
.hero {
    display: grid;
    grid-template-columns: minmax(152px, 200px) 1fr;
    gap: 2rem 2.75rem;
    align-items: start;
    margin-bottom: 52px;
}

.hero-visual {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.hero-avatar-ring {
    width: min(200px, 46vw);
    max-width: 200px;
    aspect-ratio: 1;
    border-radius: 50%;
    padding: 4px;
    background: linear-gradient(150deg, var(--border-color), var(--accent-soft));
    box-shadow: var(--shadow);
}

.hero-avatar {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    object-fit: cover;
    display: block;
    background: var(--card-bg);
}

.hero-status {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--secondary-text);
    text-align: center;
    line-height: 1.35;
    max-width: 12rem;
    margin: 0;
}

.hero-status-dot {
    flex-shrink: 0;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: #3d9a6a;
    box-shadow: 0 0 0 2px rgba(61, 154, 106, 0.22);
}

[data-theme="dark"] .hero-status-dot {
    background-color: #4ade80;
    box-shadow: 0 0 0 2px rgba(74, 222, 128, 0.18);
}

@media (prefers-color-scheme: dark) {
    :root:not([data-theme]) .hero-status-dot {
        background-color: #4ade80;
        box-shadow: 0 0 0 2px rgba(74, 222, 128, 0.18);
    }
}

.hero-content {
    min-width: 0;
    padding-top: 0.15rem;
}

.name {
    font-size: 2.5rem;
    font-weight: 600;
    letter-spacing: -0.03em;
    line-height: 1.15;
    margin-bottom: 10px;
    color: var(--text-color);
}

.tagline {
    font-size: 1.2rem;
    font-weight: 400;
    color: var(--secondary-text);
    margin-bottom: 20px;
    letter-spacing: 0;
    line-height: 1.55;
}

.social-links {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    font-size: 0.95rem;
}

.hero-social {
    justify-content: flex-start;
}

.social-links a {
    color: var(--accent-color);
    text-decoration: none;
    transition: opacity 0.2s ease;
}

.social-links a:hover {
    opacity: 0.85;
    text-decoration: underline;
    text-underline-offset: 3px;
}

/* Intro / About copy */
.intro {
    font-size: calc(1.05rem - 2pt);
    line-height: 1.75;
    padding-top: 1.15rem;
    margin-top: 0.35rem;
    margin-bottom: 0;
    border-top: 1px solid var(--border-color);
}

.intro p {
    margin-bottom: 12px;
}

.intro p:last-child {
    margin-bottom: 0;
}

.intro--hero {
    max-width: 42rem;
}

@media (max-width: 768px) {
    .hero .intro--hero {
        text-align: left;
    }
}

/* Section */
.section {
    margin-bottom: 60px;
}

.section-title {
    font-size: 1.75rem;
    font-weight: 600;
    letter-spacing: -0.025em;
    line-height: 1.25;
    margin-bottom: 25px;
    color: var(--text-color);
}

/* Items Container */
.items-container {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.item {
    padding: 22px 24px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    background-color: var(--card-bg);
    transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}

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

[data-theme="dark"] .item {
    background-color: var(--card-bg);
    border-color: var(--border-color);
}

[data-theme="dark"] .item:hover {
    border-color: var(--secondary-text);
    box-shadow: var(--shadow);
}

@media (prefers-color-scheme: dark) {
    :root:not([data-theme]) .item {
        background-color: var(--card-bg);
        border-color: var(--border-color);
    }
    
    :root:not([data-theme]) .item:hover {
        border-color: var(--secondary-text);
        box-shadow: var(--shadow);
    }
}

.item-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 10px;
    gap: 15px;
}

.item-title {
    font-size: 1.2rem;
    font-weight: 600;
    letter-spacing: -0.02em;
    color: var(--text-color);
    margin: 0;
}

.item-subtitle {
    font-size: 0.95rem;
    color: var(--secondary-text);
    margin: 5px 0;
}

.item-role {
    font-size: 0.9rem;
    color: var(--accent-color);
    font-weight: 500;
}

.item-period {
    font-size: 0.85rem;
    color: var(--secondary-text);
    white-space: nowrap;
}

.item-description {
    margin-top: 12px;
    color: var(--text-color);
    line-height: 1.7;
}

.item-link {
    display: inline-block;
    margin-top: 10px;
    color: var(--accent-color);
    text-decoration: none;
    font-size: 0.9rem;
}

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

/* Skills Grid */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 25px;
}

.skill-category {
    padding: 22px 24px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    background-color: var(--card-bg);
}

[data-theme="dark"] .skill-category {
    background-color: var(--card-bg);
    border-color: var(--border-color);
}

@media (prefers-color-scheme: dark) {
    :root:not([data-theme]) .skill-category {
        background-color: var(--card-bg);
        border-color: var(--border-color);
    }
}

.skill-category h3 {
    font-size: 1.0625rem;
    font-weight: 600;
    letter-spacing: -0.02em;
    margin-bottom: 15px;
    color: var(--text-color);
}

.tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.tag {
    display: inline-block;
    padding: 6px 14px;
    background-color: var(--accent-soft);
    border: 1px solid transparent;
    border-radius: 999px;
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--text-color);
    transition: background-color 0.25s ease, border-color 0.25s ease;
}

.tag:hover {
    background-color: var(--hover-bg);
    border-color: var(--border-color);
}

[data-theme="dark"] .tag {
    background-color: var(--accent-soft);
    border-color: transparent;
}

[data-theme="dark"] .tag:hover {
    background-color: var(--hover-bg);
    border-color: var(--border-color);
}

@media (prefers-color-scheme: dark) {
    :root:not([data-theme]) .tag {
        background-color: var(--accent-soft);
        border-color: transparent;
    }
    
    :root:not([data-theme]) .tag:hover {
        background-color: var(--hover-bg);
        border-color: var(--border-color);
    }
}

/* Skills lifecycle flow (code → build → test → release → deploy → operate → monitor → loop) */
.skills-lifecycle-section .skills-lifecycle-lede {
    font-size: 0.975rem;
    color: var(--secondary-text);
    max-width: 42rem;
    line-height: 1.65;
    margin-bottom: 1.75rem;
}

.lifecycle-flow {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

/* 11-column grid: top row uses 1–7; ↓ under Release (7); Deploy→Operate→Monitor in 7–11 */
.lifecycle-layout {
    display: grid;
    grid-template-columns: repeat(11, minmax(0, 1fr));
    column-gap: 0.2rem;
    row-gap: 0.35rem;
    align-items: stretch;
    width: 100%;
}

.lifecycle-track--top {
    display: contents;
}

.lifecycle-track--top > :nth-child(1) {
    grid-column: 1;
}

.lifecycle-track--top > :nth-child(2) {
    grid-column: 2;
}

.lifecycle-track--top > :nth-child(3) {
    grid-column: 3;
}

.lifecycle-track--top > :nth-child(4) {
    grid-column: 4;
}

.lifecycle-track--top > :nth-child(5) {
    grid-column: 5;
}

.lifecycle-track--top > :nth-child(6) {
    grid-column: 6;
}

.lifecycle-track--top > :nth-child(7) {
    grid-column: 7;
}

.lifecycle-bridge {
    display: contents;
}

.lifecycle-bridge-spacer {
    grid-column: 1 / 7;
    min-height: 0;
}

.lifecycle-bridge-arrow {
    grid-column: 7;
    justify-self: center;
    align-self: center;
    font-size: 1.2rem;
    line-height: 1;
    color: var(--accent-color);
    opacity: 0.75;
    font-weight: 600;
}

.lifecycle-track--bottom {
    display: contents;
}

.lifecycle-bottom-spacer {
    grid-column: 1 / 7;
    min-height: 0;
}

.lifecycle-track--bottom > article:nth-child(2) {
    grid-column: 7;
}

.lifecycle-track--bottom > .lifecycle-connector:nth-child(3) {
    grid-column: 8;
}

.lifecycle-track--bottom > article:nth-child(4) {
    grid-column: 9;
}

.lifecycle-track--bottom > .lifecycle-connector:nth-child(5) {
    grid-column: 10;
}

.lifecycle-track--bottom > article:nth-child(6) {
    grid-column: 11;
}

.lifecycle-track--bottom .lifecycle-connector {
    width: auto;
    min-width: 0.75rem;
}

.lifecycle-stage {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 14px 12px 16px;
    box-shadow: var(--shadow);
    transition: border-color 0.25s ease, box-shadow 0.25s ease;
}

.lifecycle-stage:hover {
    border-color: var(--accent-color);
    box-shadow: var(--shadow);
}

.lifecycle-phase {
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--accent-color);
    margin: 0 0 10px;
}

.lifecycle-skills {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.lifecycle-skills li {
    font-size: 0.6875rem;
    font-weight: 500;
    padding: 4px 9px;
    border-radius: 999px;
    background-color: var(--accent-soft);
    color: var(--text-color);
    line-height: 1.35;
}

.lifecycle-connector {
    display: flex;
    align-items: center;
    justify-content: center;
    flex: 0 0 auto;
    width: 1.1rem;
    color: var(--secondary-text);
    opacity: 0.9;
    align-self: center;
}

.lifecycle-connector--arrow::before {
    content: '→';
    font-size: 0.95rem;
    font-weight: 600;
}

.lifecycle-loop-label {
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--secondary-text);
    font-style: italic;
    line-height: 1.5;
    margin-top: 1.1rem;
    max-width: 38rem;
}

.lifecycle-loop-icon {
    flex-shrink: 0;
    font-size: 1.2rem;
    font-style: normal;
    color: var(--accent-color);
    line-height: 1.3;
}

@media (max-width: 767px) {
    .lifecycle-layout {
        display: flex;
        flex-direction: column;
        gap: 0.35rem;
    }

    .lifecycle-track--top,
    .lifecycle-track--bottom {
        display: flex;
        flex-direction: column;
        align-items: stretch;
    }

    .lifecycle-track--top .lifecycle-stage,
    .lifecycle-track--bottom .lifecycle-stage {
        max-width: none;
        width: 100%;
    }

    .lifecycle-connector {
        width: 100%;
        min-height: 0.75rem;
    }

    .lifecycle-connector--arrow::before {
        content: '↓';
    }

    .lifecycle-bridge {
        display: flex;
        justify-content: center;
        align-items: center;
        min-height: 1.25rem;
    }

    .lifecycle-bridge-spacer {
        display: none;
    }

    .lifecycle-bottom-spacer {
        display: none;
    }
}

/* Contact Section */
.contact-section {
    margin-bottom: 24px;
}

.contact-description {
    font-size: 1.05rem;
    color: var(--text-color);
    line-height: 1.8;
    margin-bottom: 20px;
    text-align: center;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-top: 16px;
}

.contact-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    padding: 32px 24px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background-color: var(--card-bg);
    text-decoration: none;
    color: var(--text-color);
    transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
    text-align: center;
}

.contact-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow);
    border-color: var(--accent-color);
}

[data-theme="dark"] .contact-card {
    background-color: var(--card-bg);
    border-color: var(--border-color);
}

[data-theme="dark"] .contact-card:hover {
    border-color: var(--accent-color);
    box-shadow: var(--shadow);
}

@media (prefers-color-scheme: dark) {
    :root:not([data-theme]) .contact-card {
        background-color: var(--card-bg);
        border-color: var(--border-color);
    }
    
    :root:not([data-theme]) .contact-card:hover {
        border-color: var(--accent-color);
        box-shadow: var(--shadow);
    }
}

.contact-card svg {
    color: var(--accent-color);
    margin-bottom: 5px;
}

.contact-card span {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-color);
}

.contact-card small {
    font-size: 0.9rem;
    color: var(--secondary-text);
}

/* Footer */
.footer {
    background-color: var(--hover-bg);
    border-top: 1px solid var(--border-color);
    margin-top: 28px;
    padding: 28px 0 20px;
}

[data-theme="dark"] .footer {
    background-color: #161514;
    border-top-color: var(--border-color);
}

@media (prefers-color-scheme: dark) {
    :root:not([data-theme]) .footer {
        background-color: #161514;
        border-top-color: var(--border-color);
    }
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-logo {
    margin-bottom: 15px;
}

.footer-logo .logo-svg {
    color: var(--accent-color);
    opacity: 0.9;
}

.footer-section h3 {
    font-size: 1.3rem;
    color: var(--text-color);
    margin-bottom: 15px;
}

.footer-section h4 {
    font-size: 1.1rem;
    color: var(--text-color);
    margin-bottom: 10px;
}

.footer-section p {
    color: var(--secondary-text);
    line-height: 1.6;
    margin-bottom: 10px;
}

.footer-location {
    color: var(--accent-color);
    font-weight: 500;
}

.footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-links li {
    margin-bottom: 6px;
}

.footer-links a {
    color: var(--secondary-text);
    text-decoration: none;
    transition: color 0.2s ease;
}

.footer-links a:hover {
    color: var(--accent-color);
}

.footer-bottom {
    border-top: 1px solid var(--border-color);
    padding-top: 18px;
    text-align: center;
    color: var(--secondary-text);
    font-size: 0.9rem;
}

.footer-bottom p {
    margin: 5px 0;
}

.footer-tech {
    color: var(--secondary-text);
    font-size: 0.85rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    :root {
        --nav-scroll-margin: calc(60px + 1rem);
    }

    .nav-container {
        height: 60px;
    }

    .nav-menu {
        position: absolute;
        top: 60px;
        left: 0;
        right: 0;
        background-color: var(--bg-color);
        border-bottom: 1px solid var(--border-color);
        flex-direction: column;
        gap: 0;
        padding: 20px;
        display: none;
        box-shadow: var(--shadow);
    }

    .nav-menu.active {
        display: flex;
    }

    .nav-menu li {
        width: 100%;
        text-align: center;
        padding: 10px 0;
        border-bottom: 1px solid var(--border-color);
    }

    .nav-menu li:last-child {
        border-bottom: none;
    }

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

    .hero {
        grid-template-columns: 1fr;
        justify-items: center;
        text-align: center;
        gap: 1.5rem;
        margin-bottom: 40px;
    }

    .hero-content {
        text-align: center;
        padding-top: 0;
    }

    .hero-social {
        justify-content: center;
    }

    .name {
        font-size: 2rem;
    }

    .tagline {
        font-size: 1.1rem;
    }

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

    .item-header {
        flex-direction: column;
    }

    .item-period {
        white-space: normal;
    }

    .skills-grid {
        grid-template-columns: 1fr;
    }

    .social-links {
        flex-direction: column;
        gap: 8px;
    }

    .contact-grid {
        grid-template-columns: 1fr;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 20px;
    }
}

/* Smooth scrolling */
html {
    scroll-behavior: smooth;
}

/* Selection */
::selection {
    background-color: rgba(92, 109, 138, 0.22);
    color: var(--text-color);
}

[data-theme="dark"] ::selection {
    background-color: rgba(157, 175, 196, 0.28);
    color: var(--text-color);
}

@media (prefers-color-scheme: dark) {
    :root:not([data-theme]) ::selection {
        background-color: rgba(157, 175, 196, 0.28);
        color: var(--text-color);
    }
}