/* ==========================================================================
   Ryan Sansbury Portfolio - Linear.app Aesthetic
   Dark mode, precise, minimal, engineered
   ========================================================================== */

/* ==========================================================================
   1. CSS VARIABLES
   ========================================================================== */

:root {
    /* Colors */
    --color-bg: #0A0A0A;
    --color-surface: #141414;
    --color-border: #222222;
    --color-border-subtle: #1A1A1A;
    
    --color-text: #FFFFFF;
    --color-text-muted: rgba(255, 255, 255, 0.6);
    --color-text-subtle: rgba(255, 255, 255, 0.4);
    
    --color-primary: #0D9488;
    --color-primary-hover: #14B8A6;
    --color-success: #10B981;
    --color-warning: #F59E0B;
    
    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
    
    /* Spacing (8px grid) */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    --space-2xl: 48px;
    --space-3xl: 64px;
    --space-4xl: 96px;
    --space-5xl: 128px;
    
    /* Layout */
    --container-width: 1280px;
    --content-width: 920px;

    /* Safe Area Insets (for modern iPhones with notch/Dynamic Island) */
    --safe-area-inset-top: env(safe-area-inset-top, 0px);
    --safe-area-inset-bottom: env(safe-area-inset-bottom, 0px);
    --safe-area-inset-left: env(safe-area-inset-left, 0px);
    --safe-area-inset-right: env(safe-area-inset-right, 0px);
    
    /* Animation */
    --ease: cubic-bezier(0.16, 1, 0.3, 1);
    --transition-fast: 200ms var(--ease);
    --transition-base: 400ms var(--ease);
}

/* ==========================================================================
   2. RESET & BASE
   ========================================================================== */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

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

h1, h2, h3, h4, h5, h6 {
    color: var(--color-text);
    font-weight: 600;
    line-height: 1.2;
    letter-spacing: -0.01em;
    overflow-wrap: break-word;
    word-wrap: break-word;
}

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

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

a:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
    border-radius: 4px;
}

ul {
    list-style: none;
}

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

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

/* ==========================================================================
   3. TYPOGRAPHY
   ========================================================================== */

.section-title {
    font-size: 48px;
    font-weight: 600;
    letter-spacing: -0.02em;
    margin-bottom: var(--space-2xl);
    color: var(--color-text);
}

.section-intro {
    max-width: var(--container-width);
    margin-bottom: var(--space-2xl);
    font-size: 1.05rem;
    line-height: 1.7;
    color: var(--color-text-muted);
}

/* ==========================================================================
   4. NAVIGATION
   ========================================================================== */

.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background-color: rgba(10, 10, 10, 0.8);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border-subtle);
    padding-top: var(--safe-area-inset-top);
}

.nav-container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: var(--space-lg) var(--space-xl);
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: relative;
}

.nav-logo {
    font-size: 20px;
    font-weight: 700;
    color: var(--color-text);
    letter-spacing: -0.02em;
    transition: transform var(--transition-fast);
    flex-shrink: 0;
}

.nav-logo:hover {
    transform: translateY(-2px);
    color: var(--color-text);
}

.nav-links {
    display: flex;
    gap: var(--space-xl);
    align-items: center;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
}

.nav-link {
    font-size: 15px;
    font-weight: 500;
    color: var(--color-text-muted);
    transition: color var(--transition-fast);
}

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

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

.nav-link:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 4px;
    border-radius: 4px;
}

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

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

.nav-mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
}

.nav-mobile-toggle span {
    display: block;
    width: 20px;
    height: 2px;
    background-color: var(--color-text);
    transition: all var(--transition-fast);
}

.nav-mobile-menu {
    position: fixed;
    top: calc(73px + var(--safe-area-inset-top));
    left: 0;
    right: 0;
    background-color: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-xl);
    padding-bottom: calc(var(--space-xl) + var(--safe-area-inset-bottom));
    display: none;
    flex-direction: column;
    gap: var(--space-lg);
    z-index: 99;
}

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

.nav-mobile-link {
    font-size: 18px;
    font-weight: 500;
    color: var(--color-text-muted);
    padding: var(--space-md) 0;
    border-bottom: 1px solid var(--color-border-subtle);
}

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

/* ==========================================================================
   5. HERO SECTION
   ========================================================================== */

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-5xl) var(--space-xl);
    position: relative;
    overflow: hidden;
    background-color: var(--color-bg);
}

.hero-dots {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.hero-container {
    max-width: var(--content-width);
    width: 100%;
    text-align: center;
    position: relative;
    z-index: 1;
}

.hero-title {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    margin-bottom: var(--space-xl);
}

.hero-title-main {
    font-size: 72px;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--color-text);
    background: linear-gradient(135deg, #FFFFFF 0%, rgba(255, 255, 255, 0.7) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-title-sub {
    font-size: 32px;
    font-weight: 600;
    letter-spacing: -0.01em;
    color: var(--color-text-muted);
}

.hero-description {
    font-size: 18px;
    line-height: 1.8;
    color: var(--color-text-muted);
    margin-bottom: var(--space-3xl);
}

.hero-cta {
    display: flex;
    gap: var(--space-lg);
    justify-content: center;
    margin-bottom: var(--space-2xl);
}

.hero-cta .btn {
    min-width: 160px;
}

.hero-meta {
    display: flex;
    gap: var(--space-md);
    justify-content: center;
    flex-wrap: wrap;
    font-size: 14px;
    color: var(--color-text-subtle);
}

.hero-meta-sep {
    color: var(--color-border);
}

/* ==========================================================================
   6. BUTTONS
   ========================================================================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    font-size: 15px;
    font-weight: 500;
    border-radius: 8px;
    transition: all var(--transition-fast);
    cursor: pointer;
    white-space: nowrap;
}

.btn-primary {
    background-color: var(--color-primary);
    color: var(--color-text);
    border: 1px solid transparent;
}

.btn-primary:hover {
    background-color: var(--color-primary);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(13, 148, 136, 0.4);
    color: var(--color-text);
}

.btn-primary:focus-visible {
    outline: 2px solid var(--color-text);
    outline-offset: 2px;
}

.btn-secondary {
    background-color: var(--color-surface);
    color: var(--color-text-muted);
    border: 1px solid var(--color-primary);
}

.btn-secondary:hover {
    background-color: var(--color-surface);
    border-color: var(--color-primary);
    color: var(--color-text);
    transform: translateY(-2px);
}

.btn-secondary:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* ==========================================================================
   7. ABOUT SECTION
   ========================================================================== */

.about {
    padding: var(--space-4xl) var(--space-xl);
    background-color: var(--color-surface);
}

.about-container {
    max-width: var(--container-width);
    margin: 0 auto;
}

.about-content {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.about-content p {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--color-text);
}

/* About Facts Cards */
.about-facts {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-lg);
    margin-top: var(--space-2xl);
}

.about-fact-card {
    background-color: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: var(--space-lg);
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
    transition: all var(--transition-fast);
}

.about-fact-card:hover {
    transform: translateY(-4px);
    border-color: rgba(13, 148, 136, 0.6);
}

.about-fact-icon {
    color: var(--color-primary);
    margin-bottom: var(--space-sm);
}

.about-fact-label {
    font-size: 12px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-subtle);
}

.about-fact-value {
    font-size: 18px;
    font-weight: 600;
    color: var(--color-text);
    line-height: 1.3;
}

.about-fact-detail {
    font-size: 14px;
    color: var(--color-text-muted);
}

@media (max-width: 1024px) {
    .about-facts {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 600px) {
    .about-facts {
        grid-template-columns: 1fr;
    }
}

/* About Tags */
.about-tags {
    margin-top: var(--space-2xl);
}

.about-tags-title {
    font-size: 14px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-muted);
    margin-bottom: var(--space-md);
}

.about-tags-list {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.about-tag {
    font-size: 14px;
    font-weight: 500;
    padding: 8px 16px;
    border-radius: 8px;
    background-color: rgba(13, 148, 136, 0.1);
    color: var(--color-primary);
    border: 1px solid rgba(13, 148, 136, 0.2);
    transition: all var(--transition-fast);
}

.about-tag:hover {
    background-color: rgba(13, 148, 136, 0.2);
    transform: translateY(-2px);
}

/* ==========================================================================
   8. EXPERIENCE SECTION
   ========================================================================== */

.experience {
    padding: var(--space-4xl) var(--space-xl);
    background-color: var(--color-bg);
}

.experience-container {
    max-width: var(--container-width);
    margin: 0 auto;
}

.experience-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-lg);
}

.project-card {
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: var(--space-xl);
    transition: all var(--transition-fast);
}

.project-card:hover {
    transform: translateY(-4px);
    border-color: rgba(13, 148, 136, 0.6);
}

.project-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--space-md);
    gap: var(--space-md);
}

.project-card-header h3 {
    font-size: 20px;
    color: var(--color-text);
    flex: 1;
}

.project-tag {
    font-size: 12px;
    font-weight: 500;
    padding: 4px 12px;
    border-radius: 6px;
    background-color: rgba(13, 148, 136, 0.15);
    color: var(--color-primary);
    white-space: nowrap;
}

.project-card-description {
    font-size: 15px;
    line-height: 1.6;
    color: var(--color-text-muted);
    margin-bottom: var(--space-md);
}

.project-card-details {
    font-size: 14px;
    line-height: 1.6;
    color: var(--color-text-muted);
    margin-bottom: var(--space-sm);
}

.project-card-details strong {
    color: var(--color-text);
    font-weight: 600;
}

.project-card-tech {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    margin-top: var(--space-md);
}

.tech-tag-small {
    font-size: 12px;
    font-weight: 500;
    padding: 4px 10px;
    border-radius: 6px;
    background-color: rgba(13, 148, 136, 0.1);
    color: var(--color-primary);
    transition: all var(--transition-fast);
    overflow-wrap: break-word;
    word-wrap: break-word;
}

@media (hover: hover) {
    .tech-tag-small:hover {
        background-color: rgba(13, 148, 136, 0.2);
        transform: translateY(-2px);
    }
}

/* ==========================================================================
   8. PROJECTS SECTION
   ========================================================================== */

.projects {
    padding: var(--space-4xl) var(--space-xl);
    background-color: var(--color-bg);
}

.projects-container {
    max-width: var(--container-width);
    margin: 0 auto;
}

.project-featured {
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 16px;
    padding: var(--space-2xl);
    transition: all var(--transition-fast);
}

.project-featured:hover {
    transform: translateY(-4px);
    border-color: rgba(13, 148, 136, 0.4);
}

.project-header-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-md);
    gap: var(--space-lg);
}

.project-header-row .project-title {
    margin-bottom: 0;
    flex: 1;
}

.project-header-row .project-badge-container {
    margin-bottom: 0;
    flex-shrink: 0;
}

.project-badge-container {
    display: flex;
    gap: var(--space-sm);
}

.project-badge {
    font-size: 12px;
    font-weight: 500;
    padding: 6px 14px;
    border-radius: 6px;
    background-color: rgba(13, 148, 136, 0.15);
    color: var(--color-primary);
}

.project-badge-active {
    background-color: rgba(16, 185, 129, 0.15);
    color: var(--color-success);
}

.project-title {
    font-size: 36px;
    font-weight: 600;
    margin-bottom: var(--space-md);
    color: var(--color-text);
}

.project-subtitle {
    font-size: 18px;
    line-height: 1.6;
    color: var(--color-text-muted);
    margin-bottom: var(--space-xl);
}

.project-content {
    margin-bottom: var(--space-xl);
}

.project-description {
    font-size: 16px;
    line-height: 1.7;
    color: var(--color-text-muted);
}

.project-description p {
    margin-bottom: var(--space-lg);
}

.project-description h4 {
    font-size: 20px;
    color: var(--color-text);
    margin-top: var(--space-xl);
    margin-bottom: var(--space-md);
}

.feature-list {
    margin-bottom: var(--space-xl);
}

.feature-list li {
    font-size: 15px;
    line-height: 1.7;
    color: var(--color-text-muted);
    margin-bottom: var(--space-md);
    padding-left: var(--space-lg);
    position: relative;
}

.feature-list li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--color-primary);
    font-weight: bold;
}

.feature-list strong {
    color: var(--color-text);
    font-weight: 600;
}

.project-metrics {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-md);
    margin-top: var(--space-lg);
}

.project-metric {
    background-color: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: var(--space-md);
    transition: all var(--transition-fast);
    display: flex;
    flex-direction: column;
    justify-content: center;
    height: 90px;
}

.project-metric:hover {
    transform: translateY(-2px);
    border-color: rgba(13, 148, 136, 0.4);
}

/* Capability cards - top row */
.capability-card {
    background-color: rgba(13, 148, 136, 0.05);
}

.capability-card .metric-label {
    font-size: 14px;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 4px;
}

.capability-card .metric-detail {
    font-size: 13px;
    color: var(--color-text-muted);
    line-height: 1.45;
}

/* Metric cards - bottom row */
.metric-card {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: var(--space-md);
}

.metric-card .metric-value {
    font-size: 32px;
    font-weight: 700;
    color: var(--color-primary);
    font-family: var(--font-mono);
    line-height: 1;
}

.metric-card .metric-text {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.metric-card .metric-label {
    font-size: 14px;
    font-weight: 600;
    color: var(--color-text);
}

.metric-card .metric-detail {
    font-size: 11px;
    color: var(--color-text-muted);
}

.project-tech {
    padding-top: var(--space-xl);
    border-top: 1px solid var(--color-border);
}

.project-tech h5 {
    font-size: 16px;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: var(--space-md);
}

.tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.tech-tag {
    font-size: 13px;
    font-weight: 500;
    padding: 6px 14px;
    border-radius: 6px;
    background-color: rgba(13, 148, 136, 0.1);
    color: var(--color-primary);
    border: 1px solid rgba(13, 148, 136, 0.2);
    transition: all var(--transition-fast);
    overflow-wrap: break-word;
    word-wrap: break-word;
}

@media (hover: hover) {
    .tech-tag:hover {
        background-color: rgba(13, 148, 136, 0.2);
        transform: translateY(-2px);
    }
}

/* ==========================================================================
   9. CONNECT SECTION
   ========================================================================== */

.connect {
    padding: var(--space-4xl) var(--space-xl);
    background-color: var(--color-surface);
}

.connect-container {
    max-width: var(--container-width);
    margin: 0 auto;
}

.connect .section-title {
    text-align: center;
}

.connect-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-lg);
    align-items: stretch;
}

.connect-card {
    display: flex;
    flex-direction: column;
    background-color: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: var(--space-4xl);
    transition: border-color var(--transition-fast);
}

.connect-card .connect-links {
    margin-top: auto;
}

.connect-card:hover {
    border-color: rgba(13, 148, 136, 0.6);
}

.connect-card h3 {
    font-size: 24px;
    margin-bottom: var(--space-lg);
    color: var(--color-text);
}

.connect-card p {
    font-size: 16px;
    line-height: 1.7;
    color: var(--color-text-muted);
    margin-bottom: var(--space-lg);
}

.connect-card ul {
    margin-bottom: var(--space-xl);
}

.connect-card li {
    font-size: 15px;
    color: var(--color-text-muted);
    margin-bottom: var(--space-sm);
    padding-left: var(--space-lg);
    position: relative;
}

.connect-card li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--color-primary);
    font-weight: bold;
}

.connect-links {
    display: flex;
}

.connect-links .btn {
    min-width: 200px;
    text-align: center;
}

/* ==========================================================================
   10. FOOTER
   ========================================================================== */

.footer {
    padding: var(--space-lg) var(--space-xl);
    border-top: 1px solid var(--color-border-subtle);
    background-color: var(--color-bg);
}

.footer-container {
    max-width: var(--container-width);
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: relative;
}

.footer-brand {
    font-size: 20px;
    font-weight: 700;
    color: var(--color-text);
    letter-spacing: -0.02em;
}

.footer-links {
    display: flex;
    gap: var(--space-xl);
}

.footer-links a {
    font-size: 15px;
    font-weight: 500;
    color: var(--color-text-muted);
    transition: color var(--transition-fast);
}

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

.footer-copyright {
    font-size: 14px;
    color: var(--color-text-subtle);
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
}

/* ==========================================================================
   11. ANIMATIONS
   ========================================================================== */

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn var(--transition-base) var(--ease) forwards;
}

/* ==========================================================================
   12. RESPONSIVE
   ========================================================================== */

@media (max-width: 1024px) {
    .experience-grid {
        grid-template-columns: 1fr;
    }
    
    .project-metrics {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    :root {
        --space-5xl: 64px;
        --space-4xl: 48px;
        --space-3xl: 32px;
    }
    
    .nav-links {
        display: none;
    }
    
    .nav-mobile-toggle {
        display: flex;
    }
    
    .hero {
        min-height: auto;
        /* Account for fixed nav (~73px) + safe area (Dynamic Island) + breathing room */
        padding: calc(80px + var(--safe-area-inset-top) + var(--space-3xl)) var(--space-lg) var(--space-3xl);
    }
    
    .hero-title-main {
        font-size: 48px;
    }
    
    .hero-title-sub {
        font-size: 24px;
    }
    
    .hero-description br {
        display: none;
    }
    
    .hero-cta {
        flex-direction: column;
        width: 100%;
        max-width: 320px;
        margin-left: auto;
        margin-right: auto;
    }

    .hero-cta .btn {
        width: 100%;
        padding: 16px 24px;
    }
    
    .hero-meta {
        flex-direction: column;
        gap: var(--space-sm);
    }
    
    .hero-meta-sep {
        display: none;
    }
    
    .section-title {
        font-size: 32px;
        margin-bottom: var(--space-2xl);
    }
    
    .experience {
        padding: var(--space-4xl) var(--space-lg);
    }
    
    .experience-grid {
        grid-template-columns: 1fr;
    }
    
    .projects {
        padding: var(--space-4xl) var(--space-lg);
    }
    
    .project-featured {
        padding: var(--space-xl);
    }
    
    .project-title {
        font-size: 28px;
    }
    
    .project-header-row {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-md);
    }
    
    .project-header-row .project-title {
        margin-bottom: 0;
    }
    
    .project-metrics {
        grid-template-columns: 1fr;
        gap: var(--space-sm);
    }
    
    .project-metric {
        display: flex;
        flex-direction: column;
        text-align: left;
        padding: var(--space-md);
        height: auto;
    }

    .metric-card {
        flex-direction: row;
    }

    .metric-card .metric-value {
        font-size: 24px;
    }
    
    .connect-grid {
        grid-template-columns: 1fr;
    }

    /* Footer Mobile Layout */
    .footer {
        padding: var(--space-xl) var(--space-lg);
        padding-bottom: calc(var(--space-xl) + var(--safe-area-inset-bottom));
    }

    .footer-container {
        flex-direction: column;
        gap: var(--space-lg);
        text-align: center;
    }

    .footer-copyright {
        position: static;
        left: auto;
        transform: none;
        order: 3;
    }

    .footer-brand {
        order: 1;
    }

    .footer-links {
        order: 2;
        flex-wrap: wrap;
        justify-content: center;
        gap: var(--space-md);
    }

    .footer-links a {
        padding: 12px 16px;
        min-height: 44px;
        display: inline-flex;
        align-items: center;
    }

    /* Section intro mobile sizing */
    .section-intro {
        font-size: 0.95rem;
    }

    /* About section mobile padding */
    .about {
        padding: var(--space-4xl) var(--space-lg);
    }

    /* Skills section mobile padding */
    .skills-container {
        padding: 0 var(--space-lg);
    }

    /* Remove fixed height on skill cards for mobile */
    .skill-category {
        height: auto;
        min-height: 0;
    }

    /* Connect card reduced padding on mobile */
    .connect-card {
        padding: var(--space-xl);
    }

    /* Connect links stack on mobile */
    .connect-links {
        flex-direction: column;
        gap: var(--space-sm);
    }

    .connect-links .btn {
        width: 100%;
        justify-content: center;
    }

    /* Improve touch targets for tech tags on mobile */
    .tech-tag-small {
        padding: 8px 12px;
        min-height: 36px;
        display: inline-flex;
        align-items: center;
    }

    .tech-tag {
        padding: 10px 16px;
        min-height: 40px;
        display: inline-flex;
        align-items: center;
    }

    /* Nav mobile link improved touch targets */
    .nav-mobile-link {
        padding: var(--space-md) 0;
        min-height: 48px;
        display: flex;
        align-items: center;
    }
}

@media (max-width: 480px) {
    .project-featured {
        padding: var(--space-lg);
        border-radius: 12px;
    }

    .project-card {
        padding: var(--space-lg);
    }

    /* Smaller hero title on small phones */
    .hero-title-main {
        font-size: 40px;
    }

    .hero-title-sub {
        font-size: 20px;
    }

    /* Reduce section title further */
    .section-title {
        font-size: 28px;
    }

    /* Reduce project title */
    .project-title {
        font-size: 24px;
    }
}

/* Landscape safe areas (iPad, iPhone landscape) */
@media (orientation: landscape) and (max-width: 1024px) {
    .nav-container,
    .hero-container,
    .about-container,
    .experience-container,
    .skills-container,
    .projects-container,
    .connect-container,
    .footer-container {
        padding-left: max(var(--space-lg), var(--safe-area-inset-left));
        padding-right: max(var(--space-lg), var(--safe-area-inset-right));
    }
}

/* Very small phones (iPhone SE, etc.) */
@media (max-width: 380px) {
    .hero-title-main {
        font-size: 36px;
    }

    .hero-title-sub {
        font-size: 18px;
    }

    .hero-description {
        font-size: 15px;
    }

    .section-title {
        font-size: 26px;
    }

    .project-title {
        font-size: 22px;
    }

    /* Reduce button padding on very small screens */
    .hero-cta .btn {
        padding: 14px 20px;
        font-size: 14px;
    }

    /* Reduce connect card padding further */
    .connect-card {
        padding: var(--space-lg);
    }

    .connect-card h3 {
        font-size: 20px;
    }

    /* Smaller about fact cards */
    .about-fact-card {
        padding: var(--space-md);
    }

    .about-fact-value {
        font-size: 16px;
    }
}

/* ==========================================================================
   SKILLS SECTION
   ========================================================================== */

.skills {
    padding: var(--space-4xl) 0;
    background-color: var(--color-surface);
}

.skills-container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--space-xl);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
}

@media (max-width: 900px) {
    .skills-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    /* iPad portrait - connect grid to single column earlier */
    .connect-grid {
        grid-template-columns: 1fr;
    }

    /* iPad portrait - project metrics to single column */
    .project-metrics {
        grid-template-columns: 1fr;
    }

    /* Reduce hero height on iPad */
    .hero {
        min-height: 85vh;
    }
}

@media (max-width: 600px) {
    .skills-grid {
        grid-template-columns: 1fr;
    }
}

.skill-category {
    background-color: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: var(--space-lg);
    min-height: 196px;
    transition: border-color var(--transition-fast), transform var(--transition-fast);
}

.skill-category:hover {
    border-color: var(--color-border-subtle);
    transform: translateY(-2px);
}

.skill-category-title {
    font-size: 14px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-muted);
    margin-bottom: var(--space-md);
}

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

.skill-tag {
    font-size: 13px;
    font-weight: 500;
    color: var(--color-text);
    background-color: var(--color-bg);
    border: 1px solid var(--color-border);
    padding: 6px 12px;
    border-radius: 6px;
    transition: background-color var(--transition-fast), border-color var(--transition-fast);
}

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

/* ==========================================================================
   THEME TOGGLE
   ========================================================================== */

.theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 8px;
    color: var(--color-text-muted);
    background-color: transparent;
    border: 1px solid var(--color-border);
    cursor: pointer;
    transition: color var(--transition-fast), background-color var(--transition-fast), border-color var(--transition-fast);
    flex-shrink: 0;
}

.theme-toggle:hover {
    color: var(--color-text);
    background-color: var(--color-surface);
    border-color: var(--color-border-subtle);
}

.theme-toggle:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

.theme-icon-light {
    display: none;
}

.theme-icon-dark {
    display: block;
}

/* Light mode styles */
[data-theme="light"] {
    --color-bg: #FAFAFA;
    --color-surface: #FFFFFF;
    --color-border: #E5E5E5;
    --color-border-subtle: #EEEEEE;
    --color-text: #171717;
    --color-text-muted: rgba(23, 23, 23, 0.7);
    --color-text-subtle: rgba(23, 23, 23, 0.5);
}

[data-theme="light"] .nav {
    background-color: rgba(250, 250, 250, 0.8);
}

[data-theme="light"] .theme-icon-light {
    display: block;
}

[data-theme="light"] .theme-icon-dark {
    display: none;
}

[data-theme="light"] .hero-title-main {
    background: linear-gradient(135deg, #171717 0%, rgba(23, 23, 23, 0.8) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

[data-theme="light"] .project-badge-active {
    background-color: rgba(16, 185, 129, 0.15);
}

[data-theme="light"] .btn-primary {
    color: #FFFFFF;
}

[data-theme="light"] .btn-primary:hover {
    color: #FFFFFF;
}

/* Mobile theme toggle */
.theme-toggle-mobile {
    width: 100%;
    justify-content: center;
    gap: var(--space-sm);
    margin-top: var(--space-lg);
    padding: var(--space-md);
}

.theme-toggle-label {
    font-size: 15px;
    font-weight: 500;
}

/* Hide desktop toggle on mobile, show mobile toggle only in menu */
@media (max-width: 768px) {
    .nav-container > .theme-toggle {
        display: none;
    }
}

/* ==========================================================================
   SCROLL ANIMATION FIX
   ========================================================================== */

.project-featured,
.project-card,
.project-metric,
.connect-card,
.skill-category {
    opacity: 1 !important;
    transform: translateY(0);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

/* ==========================================================================
   PROJECT TABS
   ========================================================================== */

.project-tabs {
    display: flex;
    gap: var(--space-sm);
    margin-bottom: var(--space-xl);
    border-bottom: 1px solid var(--color-border);
    padding-bottom: var(--space-md);
    flex-wrap: wrap;
}

.project-tab {
    font-size: 14px;
    font-weight: 500;
    padding: 8px 16px;
    border-radius: 6px;
    color: var(--color-text-muted);
    background-color: transparent;
    border: 1px solid transparent;
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.project-tab:hover {
    color: var(--color-text);
    background-color: rgba(13, 148, 136, 0.1);
}

.project-tab.active {
    color: var(--color-primary);
    background-color: rgba(13, 148, 136, 0.15);
    border-color: rgba(13, 148, 136, 0.3);
}

.project-tab.disabled {
    color: var(--color-text-subtle);
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

.project-panels {
    position: relative;
}

.project-panel {
    display: none;
    animation: fadeInPanel 0.3s ease forwards;
}

.project-panel.active {
    display: block;
}

@keyframes fadeInPanel {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Project Header Links */
.project-header-links {
    display: flex;
    gap: var(--space-sm);
    flex-shrink: 0;
}


/* Project Links (deprecated - keeping for backwards compatibility) */
.project-links {
    display: flex;
    gap: var(--space-md);
    margin-top: var(--space-xl);
    padding-top: var(--space-xl);
    border-top: 1px solid var(--color-border);
}

.project-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    font-size: 14px;
    font-weight: 500;
    padding: 10px 20px;
    min-width: 290px;
    border-radius: 8px;
    color: var(--color-text-muted);
    background-color: var(--color-bg);
    border: 1px solid var(--color-border);
    transition: all var(--transition-fast);
}

.project-link:hover {
    color: var(--color-text);
    border-color: var(--color-primary);
    transform: translateY(-2px);
}

.project-link-primary {
    background-color: var(--color-primary);
    color: var(--color-text);
    border-color: var(--color-primary);
}

.project-link-primary:hover {
    background-color: var(--color-primary-hover);
    border-color: var(--color-primary-hover);
    color: var(--color-text);
}

[data-theme="light"] .project-link-primary {
    color: #FFFFFF;
}

[data-theme="light"] .project-link-primary:hover {
    color: #FFFFFF;
}

/* Responsive tabs */
@media (max-width: 768px) {
    .project-tabs {
        gap: var(--space-xs);
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
        padding-bottom: var(--space-md);
        margin-bottom: var(--space-lg);
    }

    .project-tabs::-webkit-scrollbar {
        display: none;
    }

    .project-tab {
        font-size: 13px;
        padding: 8px 12px;
        flex-shrink: 0;
    }

    .project-header-links {
        flex-wrap: wrap;
        gap: var(--space-xs);
    }

    .project-header-links .project-link {
        font-size: 12px;
        padding: 6px 12px;
    }

    .project-links {
        flex-direction: column;
    }

    .project-link {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .project-tab {
        font-size: 12px;
        padding: 6px 10px;
    }
}