/* ============================================================
   Sean K. Friese — Personal Website
   Design System & Styles
   ============================================================ */

/* --- CSS Custom Properties --- */
:root {
    /* Primary palette */
    --color-navy:        #0f1b2d;
    --color-navy-mid:    #162338;
    --color-navy-light:  #1e2d45;
    --color-slate:       #2a3a52;
    --color-slate-light: #3d4f6a;

    /* Accent */
    --color-teal:        #38bdf8;
    --color-teal-dark:   #0ea5e9;
    --color-teal-glow:   rgba(56, 189, 248, 0.15);
    --color-accent-warm: #f59e0b;

    /* Neutrals */
    --color-white:       #ffffff;
    --color-offwhite:    #f1f5f9;
    --color-gray-100:    #e2e8f0;
    --color-gray-200:    #cbd5e1;
    --color-gray-400:    #94a3b8;
    --color-gray-500:    #64748b;
    --color-gray-700:    #334155;
    --color-gray-900:    #0f172a;

    /* Typography */
    --font-heading: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
    --font-body:    'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
    --font-mono:    'JetBrains Mono', 'Fira Code', monospace;

    /* Sizing */
    --max-width:     1200px;
    --max-width-sm:  900px;
    --section-pad:   120px;
    --section-pad-sm: 72px;

    /* Transitions */
    --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
    --transition-fast: 0.2s var(--ease-out);
    --transition-med:  0.4s var(--ease-out);
    --transition-slow: 0.6s var(--ease-out);

    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.10);
    --shadow-lg: 0 12px 40px rgba(0,0,0,0.16);
    --shadow-glow: 0 0 30px rgba(56, 189, 248, 0.12);

    /* Borders */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-full: 9999px;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-body);
    color: var(--color-gray-900);
    background-color: var(--color-offwhite);
    line-height: 1.7;
    overflow-x: hidden;
}

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

a {
    color: var(--color-teal-dark);
    text-decoration: none;
    transition: color var(--transition-fast);
}
a:hover { color: var(--color-teal); }

::selection {
    background: var(--color-teal);
    color: var(--color-white);
}

/* --- Utility --- */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 40px;
}

.container--narrow {
    max-width: var(--max-width-sm);
}

.sr-only {
    position: absolute;
    width: 1px; height: 1px;
    padding: 0; margin: -1px;
    overflow: hidden;
    clip: rect(0,0,0,0);
    border: 0;
}

/* ============================================================
   NAVIGATION
   ============================================================ */
.site-nav {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 1000;
    padding: 20px 0;
    transition: all var(--transition-med);
    background: transparent;
}

.site-nav.scrolled {
    padding: 12px 0;
    background: rgba(15, 27, 45, 0.92);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    box-shadow: 0 2px 20px rgba(0,0,0,0.15);
}

.site-nav .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-brand {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--color-white);
    letter-spacing: -0.02em;
    text-decoration: none;
    transition: opacity var(--transition-fast);
}
.nav-brand:hover { color: var(--color-white); opacity: 0.8; }

.nav-links {
    display: flex;
    align-items: center;
    gap: 36px;
    list-style: none;
}

.nav-links a {
    font-size: 0.875rem;
    font-weight: 500;
    color: rgba(255,255,255,0.7);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    text-decoration: none;
    position: relative;
    padding-bottom: 4px;
    transition: color var(--transition-fast);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0; left: 0;
    width: 0; height: 2px;
    background: var(--color-teal);
    transition: width var(--transition-med);
}

.nav-links a:hover {
    color: var(--color-white);
}
.nav-links a:hover::after { width: 100%; }

.nav-contact-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 24px;
    border: 1px solid rgba(255,255,255,0.25);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-white) !important;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    cursor: pointer;
    transition: all var(--transition-fast);
    background: transparent;
}

.nav-contact-btn:hover {
    background: var(--color-teal);
    border-color: var(--color-teal);
    color: var(--color-white) !important;
    box-shadow: var(--shadow-glow);
}

.nav-contact-btn::after { display: none !important; }

/* Mobile Nav Toggle */
.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    flex-direction: column;
    gap: 5px;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-white);
    border-radius: 2px;
    transition: all var(--transition-fast);
}

/* ============================================================
   HERO SECTION
   ============================================================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(160deg, var(--color-navy) 0%, var(--color-navy-mid) 40%, var(--color-slate) 100%);
    overflow: hidden;
    padding: 120px 0 100px;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%; right: -30%;
    width: 900px; height: 900px;
    background: radial-gradient(circle, var(--color-teal-glow) 0%, transparent 70%);
    pointer-events: none;
    animation: heroGlow 8s ease-in-out infinite alternate;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -40%; left: -20%;
    width: 700px; height: 700px;
    background: radial-gradient(circle, rgba(245, 158, 11, 0.06) 0%, transparent 70%);
    pointer-events: none;
    animation: heroGlow 10s ease-in-out infinite alternate-reverse;
}

@keyframes heroGlow {
    from { transform: translate(0, 0) scale(1); opacity: 0.6; }
    to   { transform: translate(30px, -20px) scale(1.1); opacity: 1; }
}

/* Grid pattern overlay */
.hero-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
    background-size: 60px 60px;
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 780px;
}

.hero-avatar {
    width: 160px; height: 160px;
    border-radius: 50%;
    border: 4px solid rgba(255,255,255,0.15);
    margin: 0 auto 40px;
    box-shadow: 0 0 60px rgba(56, 189, 248, 0.15);
    transition: transform var(--transition-med), box-shadow var(--transition-med);
}

.hero-avatar:hover {
    transform: scale(1.05);
    box-shadow: 0 0 80px rgba(56, 189, 248, 0.25);
}

.hero-greeting {
    font-size: 1rem;
    font-weight: 500;
    color: var(--color-teal);
    text-transform: uppercase;
    letter-spacing: 0.15em;
    margin-bottom: 16px;
}

.hero h1 {
    font-family: var(--font-heading);
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    color: var(--color-white);
    letter-spacing: -0.03em;
    line-height: 1.15;
    margin-bottom: 24px;
}

.hero-tagline {
    font-size: clamp(1.05rem, 2vw, 1.25rem);
    color: rgba(255,255,255,0.6);
    line-height: 1.8;
    max-width: 600px;
    margin: 0 auto 40px;
}

.hero-socials {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    margin-bottom: 48px;
}

.hero-socials a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px; height: 44px;
    border: 1px solid rgba(255,255,255,0.15);
    border-radius: 50%;
    color: rgba(255,255,255,0.6);
    font-size: 1.1rem;
    transition: all var(--transition-fast);
}

.hero-socials a:hover {
    color: var(--color-white);
    border-color: var(--color-teal);
    background: rgba(56, 189, 248, 0.1);
    transform: translateY(-3px);
    box-shadow: 0 4px 16px rgba(56, 189, 248, 0.2);
}

.hero-cta {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    border-radius: var(--radius-full);
    font-family: var(--font-heading);
    font-size: 0.9rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    cursor: pointer;
    border: none;
    transition: all var(--transition-fast);
    text-decoration: none;
}

.btn--primary {
    background: var(--color-teal);
    color: var(--color-navy);
    box-shadow: 0 4px 20px rgba(56, 189, 248, 0.3);
}
.btn--primary:hover {
    background: var(--color-teal-dark);
    color: var(--color-white);
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(56, 189, 248, 0.4);
}

.btn--ghost {
    background: transparent;
    color: var(--color-white);
    border: 1px solid rgba(255,255,255,0.25);
}
.btn--ghost:hover {
    border-color: var(--color-white);
    color: var(--color-white);
    background: rgba(255,255,255,0.06);
    transform: translateY(-2px);
}

.hero-scroll-hint {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: rgba(255,255,255,0.3);
    font-size: 0.75rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    animation: scrollBounce 2s ease-in-out infinite;
}

@keyframes scrollBounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50%     { transform: translateX(-50%) translateY(8px); }
}

/* ============================================================
   SECTION COMMON
   ============================================================ */
.section {
    padding: var(--section-pad) 0;
}

.section--dark {
    background: var(--color-navy);
    color: var(--color-white);
}

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

.section-header {
    text-align: center;
    margin-bottom: 80px;
}

.section-label {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--color-teal);
    text-transform: uppercase;
    letter-spacing: 0.15em;
    margin-bottom: 16px;
}

.section-label i {
    font-size: 0.7rem;
}

.section-title {
    font-family: var(--font-heading);
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    letter-spacing: -0.03em;
    line-height: 1.2;
    margin-bottom: 20px;
}

.section--dark .section-title { color: var(--color-white); }

.section-subtitle {
    font-size: 1.05rem;
    color: var(--color-gray-500);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.8;
}

.section--dark .section-subtitle { color: rgba(255,255,255,0.5); }

/* ============================================================
   ABOUT SECTION
   ============================================================ */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: start;
}

.about-text p {
    font-size: 1.05rem;
    line-height: 1.85;
    color: var(--color-gray-700);
    margin-bottom: 24px;
}

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

.about-highlights {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.highlight-card {
    background: var(--color-white);
    border: 1px solid var(--color-gray-100);
    border-radius: var(--radius-md);
    padding: 28px;
    transition: all var(--transition-fast);
}

.highlight-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--color-teal);
}

.highlight-card .highlight-number {
    font-family: var(--font-heading);
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--color-teal);
    line-height: 1;
    margin-bottom: 8px;
}

.highlight-card .highlight-label {
    font-size: 0.85rem;
    color: var(--color-gray-500);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

/* ============================================================
   SKILLS SECTION
   ============================================================ */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 32px;
}

.skill-category {
    background: var(--color-navy-light);
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: var(--radius-md);
    padding: 36px;
    transition: all var(--transition-fast);
}

.skill-category:hover {
    border-color: rgba(56, 189, 248, 0.2);
    box-shadow: var(--shadow-glow);
    transform: translateY(-4px);
}

.skill-category-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 48px; height: 48px;
    border-radius: var(--radius-sm);
    background: var(--color-teal-glow);
    color: var(--color-teal);
    font-size: 1.2rem;
    margin-bottom: 20px;
}

.skill-category h3 {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: 20px;
    letter-spacing: -0.01em;
}

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

.skill-tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: var(--radius-full);
    font-size: 0.82rem;
    color: rgba(255,255,255,0.7);
    transition: all var(--transition-fast);
}

.skill-tag:hover {
    background: rgba(56, 189, 248, 0.1);
    border-color: rgba(56, 189, 248, 0.3);
    color: var(--color-teal);
}

.skill-tag i {
    font-size: 0.7rem;
    color: var(--color-teal);
}

/* ============================================================
   TIMELINE / EXPERIENCE SECTION
   ============================================================ */
.timeline {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
    padding: 0 0 0 60px;
}

/* Vertical line */
.timeline::before {
    content: '';
    position: absolute;
    top: 0;
    left: 23px;
    width: 2px;
    height: 100%;
    background: linear-gradient(
        to bottom,
        var(--color-teal) 0%,
        var(--color-gray-200) 30%,
        var(--color-gray-200) 70%,
        transparent 100%
    );
}

.timeline-item {
    position: relative;
    margin-bottom: 56px;
    opacity: 0;
    transform: translateY(30px);
    transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.timeline-item.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Dot on timeline */
.timeline-item::before {
    content: '';
    position: absolute;
    left: -45px;
    top: 8px;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--color-offwhite);
    border: 3px solid var(--color-teal);
    z-index: 2;
    transition: all var(--transition-fast);
}

.timeline-item:hover::before {
    background: var(--color-teal);
    box-shadow: 0 0 16px rgba(56, 189, 248, 0.4);
}

/* First item larger dot */
.timeline-item:first-child::before {
    width: 18px;
    height: 18px;
    left: -47px;
    top: 5px;
    background: var(--color-teal);
    box-shadow: 0 0 20px rgba(56, 189, 248, 0.3);
}

.timeline-date {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--color-teal-dark);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 8px;
}

.timeline-date i {
    font-size: 0.7rem;
}

.timeline-card {
    background: var(--color-white);
    border: 1px solid var(--color-gray-100);
    border-radius: var(--radius-md);
    padding: 32px;
    transition: all var(--transition-fast);
}

.timeline-card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--color-teal);
    transform: translateX(4px);
}

.timeline-card h3 {
    font-family: var(--font-heading);
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--color-gray-900);
    letter-spacing: -0.01em;
    margin-bottom: 4px;
}

.timeline-card .timeline-role {
    font-size: 0.95rem;
    color: var(--color-teal-dark);
    font-weight: 600;
    margin-bottom: 4px;
}

.timeline-card .timeline-url {
    font-size: 0.82rem;
    color: var(--color-gray-400);
    margin-bottom: 16px;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.timeline-card .timeline-url i {
    font-size: 0.7rem;
}

.timeline-card p {
    font-size: 0.95rem;
    line-height: 1.8;
    color: var(--color-gray-700);
    margin-bottom: 20px;
}

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

/* Project sub-cards */
.timeline-projects {
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid var(--color-gray-100);
}

.timeline-projects h4 {
    font-family: var(--font-heading);
    font-size: 0.82rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-gray-500);
    margin-bottom: 16px;
}

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

.project-chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    background: var(--color-offwhite);
    border-radius: var(--radius-full);
    font-size: 0.82rem;
    color: var(--color-gray-700);
    font-weight: 500;
    transition: all var(--transition-fast);
}

.project-chip:hover {
    background: var(--color-teal-glow);
    color: var(--color-teal-dark);
}

.project-chip i {
    color: var(--color-teal);
    font-size: 0.65rem;
}

/* Clients list */
.client-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 12px;
}

.client-tag {
    padding: 4px 12px;
    background: var(--color-offwhite);
    border-radius: var(--radius-full);
    font-size: 0.78rem;
    color: var(--color-gray-500);
    font-weight: 500;
}

/* ============================================================
   FREELANCE / OPEN SOURCE SECTION
   ============================================================ */
.freelance-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 28px;
}

.freelance-card {
    background: var(--color-navy-light);
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: var(--radius-md);
    padding: 32px;
    transition: all var(--transition-fast);
}

.freelance-card:hover {
    border-color: rgba(56, 189, 248, 0.2);
    transform: translateY(-4px);
    box-shadow: var(--shadow-glow);
}

.freelance-card h3 {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: 16px;
}

.freelance-card ul {
    list-style: none;
    padding: 0;
}

.freelance-card li {
    position: relative;
    padding-left: 20px;
    margin-bottom: 10px;
    font-size: 0.9rem;
    color: rgba(255,255,255,0.65);
    line-height: 1.6;
}

.freelance-card li::before {
    content: '\f054';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    position: absolute;
    left: 0;
    top: 2px;
    font-size: 0.55rem;
    color: var(--color-teal);
}

.freelance-card .card-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-top: 12px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-teal);
}

.freelance-card .card-link:hover {
    color: var(--color-white);
}

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer {
    background: var(--color-navy);
    border-top: 1px solid rgba(255,255,255,0.06);
    padding: 80px 0 40px;
    color: rgba(255,255,255,0.5);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 60px;
    margin-bottom: 60px;
}

.footer-brand h3 {
    font-family: var(--font-heading);
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: 16px;
}

.footer-brand p {
    font-size: 0.95rem;
    line-height: 1.8;
    max-width: 360px;
    color: rgba(255,255,255,0.5);
}

.footer-column h4 {
    font-family: var(--font-heading);
    font-size: 0.82rem;
    font-weight: 700;
    color: var(--color-white);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 20px;
}

.footer-links {
    list-style: none;
}

.footer-links li { margin-bottom: 12px; }

.footer-links a {
    font-size: 0.9rem;
    color: rgba(255,255,255,0.5);
    transition: color var(--transition-fast);
}

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

.footer-socials {
    display: flex;
    gap: 12px;
    margin-top: 24px;
}

.footer-socials a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px; height: 40px;
    border: 1px solid rgba(255,255,255,0.12);
    border-radius: 50%;
    color: rgba(255,255,255,0.5);
    font-size: 1rem;
    transition: all var(--transition-fast);
}

.footer-socials a:hover {
    color: var(--color-white);
    border-color: var(--color-teal);
    background: rgba(56, 189, 248, 0.1);
}

.footer-bottom {
    padding-top: 32px;
    border-top: 1px solid rgba(255,255,255,0.06);
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.82rem;
}

.footer-download {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--color-teal);
    font-weight: 600;
    font-size: 0.85rem;
}

.footer-download:hover { color: var(--color-white); }

/* ============================================================
   CONTACT DIALOG (Modal)
   ============================================================ */
.contact-overlay {
    position: fixed;
    inset: 0;
    z-index: 9998;
    background: rgba(15, 27, 45, 0.7);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-med);
}

.contact-overlay.active {
    opacity: 1;
    visibility: visible;
}

.contact-dialog {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.95);
    z-index: 9999;
    width: 95%;
    max-width: 560px;
    max-height: 90vh;
    overflow-y: auto;
    background: var(--color-white);
    border-radius: var(--radius-lg);
    box-shadow: 0 24px 80px rgba(0,0,0,0.3);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-med);
}

.contact-dialog.active {
    opacity: 1;
    visibility: visible;
    transform: translate(-50%, -50%) scale(1);
}

.contact-dialog-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 32px 36px 0;
}

.contact-dialog-header h2 {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--color-gray-900);
    letter-spacing: -0.02em;
}

.contact-close {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border: none;
    background: var(--color-offwhite);
    border-radius: 50%;
    font-size: 1.1rem;
    color: var(--color-gray-500);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.contact-close:hover {
    background: var(--color-gray-100);
    color: var(--color-gray-900);
}

.contact-dialog-body {
    padding: 32px 36px 36px;
}

.contact-dialog-body p {
    font-size: 0.95rem;
    color: var(--color-gray-500);
    margin-bottom: 28px;
    line-height: 1.7;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--color-gray-700);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: 8px;
}

.form-group input,
.form-group textarea {
    display: block;
    width: 100%;
    padding: 14px 16px;
    border: 2px solid var(--color-gray-100);
    border-radius: var(--radius-sm);
    font-family: var(--font-body);
    font-size: 0.95rem;
    color: var(--color-gray-900);
    background: var(--color-offwhite);
    transition: all var(--transition-fast);
    outline: none;
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--color-teal);
    background: var(--color-white);
    box-shadow: 0 0 0 4px var(--color-teal-glow);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--color-gray-400);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.contact-submit {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    width: 100%;
    justify-content: center;
    padding: 16px 32px;
    background: var(--color-navy);
    color: var(--color-white);
    border: none;
    border-radius: var(--radius-sm);
    font-family: var(--font-heading);
    font-size: 0.9rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.contact-submit:hover {
    background: var(--color-teal);
    color: var(--color-navy);
    box-shadow: 0 4px 20px rgba(56, 189, 248, 0.3);
}

.contact-submit:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.form-status {
    margin-top: 16px;
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    font-size: 0.88rem;
    font-weight: 500;
    display: none;
}

.form-status.success {
    display: block;
    background: rgba(16, 185, 129, 0.1);
    color: #059669;
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.form-status.error {
    display: block;
    background: rgba(239, 68, 68, 0.1);
    color: #dc2626;
    border: 1px solid rgba(239, 68, 68, 0.2);
}

/* ============================================================
   SCROLL TO TOP
   ============================================================ */
.scroll-top-btn {
    position: fixed;
    bottom: 32px;
    right: 32px;
    z-index: 900;
    width: 48px; height: 48px;
    border: none;
    border-radius: 50%;
    background: var(--color-navy);
    color: var(--color-white);
    font-size: 1rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all var(--transition-fast);
    box-shadow: var(--shadow-md);
}

.scroll-top-btn.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.scroll-top-btn:hover {
    background: var(--color-teal);
    color: var(--color-navy);
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

/* ============================================================
   ANIMATIONS — Fade in on scroll
   ============================================================ */
.fade-in {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

.fade-in-delay-1 { transition-delay: 0.1s; }
.fade-in-delay-2 { transition-delay: 0.2s; }
.fade-in-delay-3 { transition-delay: 0.3s; }
.fade-in-delay-4 { transition-delay: 0.4s; }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
    .about-grid {
        grid-template-columns: 1fr;
        gap: 48px;
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 40px;
    }

    .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 768px) {
    :root {
        --section-pad: 80px;
    }

    .container { padding: 0 24px; }

    .nav-links { display: none; }
    .nav-toggle { display: flex; }

    /* When mobile menu is open: normalize the nav bar */
    .site-nav.nav-open {
        padding: 20px 0;
        background: rgba(15, 27, 45, 1);
        backdrop-filter: none;
        box-shadow: none;
    }

    /* Elevate the toggle above the overlay */
    .site-nav.nav-open .nav-toggle {
        position: relative;
        z-index: 1002;
    }

    /* Hamburger → X animation */
    .site-nav.nav-open .nav-toggle span:nth-child(1) {
        transform: translateY(7px) rotate(45deg);
    }
    .site-nav.nav-open .nav-toggle span:nth-child(2) {
        opacity: 0;
        transform: scaleX(0);
    }
    .site-nav.nav-open .nav-toggle span:nth-child(3) {
        transform: translateY(-7px) rotate(-45deg);
    }

    /* Full-screen overlay */
    .nav-links.open {
        display: flex;
        flex-direction: column;
        position: fixed;
        top: 0; left: 0; right: 0; bottom: 0;
        background: rgba(15, 27, 45, 0.98);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        justify-content: center;
        align-items: center;
        gap: 32px;
        z-index: 1001;
        padding-top: 80px;
    }

    .nav-links.open a {
        font-size: 1.3rem;
        color: var(--color-white);
        text-transform: uppercase;
        letter-spacing: 0.1em;
    }

    .nav-links.open a:hover {
        color: var(--color-teal);
    }

    .nav-links.open a::after {
        display: none;
    }

    /* Style the contact link as a button in mobile overlay */
    .nav-links.open .nav-contact-btn {
        margin-top: 16px;
        padding: 14px 36px;
        font-size: 1rem;
        border-color: var(--color-teal);
        color: var(--color-teal) !important;
    }
    .hero { padding: 100px 24px 80px; }

    .hero-avatar { width: 120px; height: 120px; }

    .hero-cta { flex-direction: column; }
    .hero-cta .btn { width: 100%; justify-content: center; }

    .about-highlights {
        grid-template-columns: 1fr 1fr;
    }

    .timeline { padding-left: 48px; }
    .timeline::before { left: 16px; }
    .timeline-item::before { left: -38px; }
    .timeline-item:first-child::before { left: -40px; }

    .form-row { grid-template-columns: 1fr; }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }

    .section-header { margin-bottom: 48px; }

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

    .freelance-grid > [style*="grid-column"] {
        grid-column: auto !important;
    }
}

@media (max-width: 480px) {
    .container { padding: 0 16px; }

    .hero { padding: 80px 16px 60px; }

    .hero h1 { font-size: 2rem; }

    .about-highlights { grid-template-columns: 1fr; }

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

    /* freelance-grid already handled at 768px */

    .timeline-card { padding: 24px; }

    .contact-dialog-body { padding: 24px; }
    .contact-dialog-header { padding: 24px 24px 0; }
}

/* ============================================================
   PRINT STYLES
   ============================================================ */
@media print {
    .site-nav,
    .contact-overlay,
    .contact-dialog,
    .scroll-top-btn,
    .hero-scroll-hint,
    .hero-cta,
    .hero-socials { display: none !important; }

    body { background: #fff; color: #000; }

    .section { padding: 40px 0; }

    .timeline-item { opacity: 1 !important; transform: none !important; }
}