/* Apple-style portfolio — light theme (matches Stitch “Apple Style Portfolio” screen) */

:root {
    --surface: #fbfbfd;
    --surface-low: #f5f5f7;
    --surface-container: #ffffff;
    --surface-high: #e8e8ed;
    --surface-highest: #ffffff;
    --on-surface: #1d1d1f;
    --on-surface-variant: #6e6e73;
    --primary: #0071e3;
    --primary-strong: #0077ed;
    --on-primary: #ffffff;
    --border-subtle: rgba(0, 0, 0, 0.08);
    --border-strong: rgba(0, 0, 0, 0.12);
    --nav-h: 4.6rem;
    --radius-md: 0.625rem;
    --radius-lg: 1rem;
    --transition: 0.28s cubic-bezier(0.25, 0.1, 0.25, 1);
    --shadow-soft: 0 2px 16px rgba(0, 0, 0, 0.06);
    --shadow-lift: 0 12px 40px rgba(0, 0, 0, 0.1);
    --hero-image-scale: 1.01;
    --hero-image-x: 50%;
    --hero-image-y: 46%;
    --hero-image-offset-y: 1.2%;
    --font-display: "Manrope", -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
    --font-body: "Inter", -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    color: var(--on-surface);
    line-height: 1.65;
    background-color: #ffffff;
    -webkit-font-smoothing: antialiased;
}

.container {
    width: min(92%, 1120px);
    margin: 0 auto;
    padding: 0 1rem;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-display);
    font-weight: 700;
    line-height: 1.12;
    letter-spacing: -0.02em;
    margin-bottom: 1rem;
    color: var(--on-surface);
}

h1 {
    font-size: clamp(2.25rem, 5vw, 3.75rem);
}

h2 {
    font-size: clamp(1.75rem, 3.2vw, 2.5rem);
}

h3 {
    font-size: clamp(1.25rem, 2vw, 1.5rem);
}

p {
    margin-bottom: 1.25rem;
    color: var(--on-surface-variant);
}

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

a:hover {
    color: #0077ed;
}

ul {
    list-style: none;
}

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

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.85rem 1.65rem;
    border-radius: var(--radius-md);
    font-family: var(--font-body);
    font-weight: 600;
    font-size: 0.9375rem;
    text-align: center;
    cursor: pointer;
    transition: transform var(--transition), box-shadow var(--transition),
        background var(--transition), border-color var(--transition);
    border: none;
}

.primary-btn {
    background: linear-gradient(180deg, #0077ed 0%, var(--primary) 100%);
    color: var(--on-primary);
    box-shadow: var(--shadow-soft);
}

.primary-btn:hover {
    color: var(--on-primary);
    transform: translateY(-1px);
    filter: brightness(1.03);
}

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

.secondary-btn:hover {
    background: var(--surface-low);
    color: var(--primary);
    border-color: rgba(0, 0, 0, 0.18);
}

/* Section titles — no decorative rules; typographic only */
.section-title {
    text-align: center;
    margin-bottom: clamp(2rem, 4vw, 3rem);
    position: relative;
}

.section-title::after {
    display: none;
}

.section-description {
    text-align: center;
    max-width: 42rem;
    margin: 0 auto clamp(2rem, 4vw, 3rem);
    color: var(--on-surface-variant);
    font-size: 1.0625rem;
    line-height: 1.7;
}

/* —— Navigation (glass, design reference) —— */
nav {
    position: fixed;
    width: 100%;
    top: 0;
    left: 0;
    z-index: 1000;
    padding: 1rem 0;
    background: rgba(255, 255, 255, 0.78);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--border-subtle);
    transition: padding var(--transition), background var(--transition);
}

nav.scrolled {
    padding: 0.7rem 0;
    background: rgba(255, 255, 255, 0.94);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.nav-brand {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: auto;
    height: auto;
    padding: 0.2rem 0.1rem;
    border-radius: 0;
    color: var(--on-surface);
    background: transparent;
    border: none;
    flex-shrink: 0;
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 700;
    letter-spacing: -0.01em;
    line-height: 1;
    transition: color var(--transition), background var(--transition),
        border-color var(--transition), transform var(--transition);
}

.nav-brand:hover {
    color: var(--on-surface);
    opacity: 0.8;
    transform: none;
}

.nav-brand:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

.nav-menu {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.15rem;
}

.nav-menu li {
    margin-left: 0;
}

.nav-menu-utility {
    display: none;
}

.nav-menu a {
    font-weight: 500;
    font-size: 0.95rem;
    color: var(--on-surface-variant);
    padding: 0.5rem 0.95rem;
    border-radius: 0.25rem;
    position: relative;
}

.nav-menu a:hover {
    color: var(--on-surface);
    background: transparent;
}

.nav-menu a.active {
    color: var(--on-surface);
    background: transparent;
    box-shadow: inset 0 -2px 0 0 var(--primary);
}

.nav-end {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-shrink: 0;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 0.1rem;
}

.nav-action-link {
    font-weight: 500;
    font-size: 0.95rem;
    color: var(--on-surface-variant);
    padding: 0.5rem 0.75rem;
    border-radius: 0.35rem;
}

.nav-action-link:hover {
    color: var(--on-surface);
    background: var(--surface-low);
}

.hamburger {
    display: none;
    cursor: pointer;
    padding: 0.55rem;
    margin: 0;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-subtle);
    background: var(--surface-container);
}

.bar {
    display: block;
    width: 22px;
    height: 2px;
    margin: 5px auto;
    background-color: var(--on-surface);
    border-radius: 2px;
    transition: var(--transition);
}

/* —— Hero —— */
header#home {
    position: relative;
}

.hero {
    min-height: 100svh;
    padding: calc(var(--nav-h) + 1rem) 0 2.6rem;
    position: relative;
    overflow: hidden;
    background: #ffffff;
    display: flex;
    align-items: center;
}

.hero .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 2.5rem;
    width: min(94%, 1180px);
    transform: translateY(-0.85rem);
}

.hero-content {
    flex: 1 1 320px;
    min-width: 280px;
    max-width: 39rem;
    padding-right: 1rem;
}

.hero-eyebrow {
    display: inline-block;
    font-size: 0.6875rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--primary);
    margin-bottom: 1.1rem;
    padding: 0.45rem 0.85rem;
    border-radius: 999px;
    background: rgba(0, 113, 227, 0.1);
}

.hero-headline {
    font-size: clamp(2.7rem, 6.25vw, 4.25rem);
    font-weight: 800;
    letter-spacing: -0.035em;
    margin-bottom: 1.35rem;
    line-height: 1.05;
    max-width: 100%;
    color: var(--on-surface);
}

.hero-headline-accent {
    color: var(--primary);
}

.hero-lede {
    font-size: clamp(1.0625rem, 1.65vw, 1.25rem);
    line-height: 1.6;
    color: var(--on-surface-variant);
    margin-bottom: 0.5rem;
    max-width: 38rem;
    font-weight: 400;
}

.cta-buttons {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 1.25rem 1.75rem;
    margin-top: 2rem;
}

.hero-cta-link {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    font-size: 1.0625rem;
    font-weight: 600;
    color: var(--primary);
    padding: 0.25rem 0;
    border: none;
    background: none;
    cursor: pointer;
    font-family: inherit;
}

.hero-cta-link:hover {
    color: #0077ed;
}

.hero-cta-arrow {
    display: inline-block;
    transition: transform var(--transition);
}

.hero-cta-link:hover .hero-cta-arrow {
    transform: translateX(3px);
}

/* Squircle frame + equal white mat (same padding on all sides); photo centered in crop */
.hero-image {
    flex: 1 1 280px;
    min-width: 260px;
    max-width: min(470px, 100%);
    margin-left: auto;
    margin-right: auto;
    display: grid;
    place-items: stretch;
    aspect-ratio: 1;
    box-sizing: border-box;
    /* No inner mat: image fills frame more like reference */
    padding: 0;
    overflow: hidden;
    border-radius: 28%;
    background: #ffffff;
    box-shadow: var(--shadow-lift);
    border: 1px solid var(--border-subtle);
}

.hero-image img {
    width: 100%;
    height: 100%;
    max-width: none;
    object-fit: cover;
    object-position: var(--hero-image-x) var(--hero-image-y);
    transform: translateY(var(--hero-image-offset-y)) scale(var(--hero-image-scale));
    transform-origin: center center;
    border-radius: inherit;
    display: block;
    min-height: 0;
    min-width: 0;
}

/* —— About —— */
.about-section {
    padding: clamp(4rem, 10vw, 7rem) 0;
    background: var(--surface-low);
}

.about-content {
    display: flex;
    justify-content: center;
}

.about-text {
    max-width: 44rem;
}

.about-text h3 {
    font-size: clamp(1.2rem, 2vw, 1.45rem);
    font-weight: 600;
    color: var(--on-surface-variant);
    margin-bottom: 1.75rem;
    line-height: 1.45;
}

.highlight-text {
    background: var(--surface-container);
    padding: 1.5rem 1.75rem;
    border-radius: var(--radius-lg);
    margin: 2rem 0;
    border: 1px solid var(--border-subtle);
    box-shadow: var(--shadow-soft);
}

.highlight-text h4 {
    font-size: 1.15rem;
    margin: 0;
    color: var(--primary);
    font-weight: 600;
}

.about-text .location {
    margin-top: 1.5rem;
    font-style: normal;
    color: var(--on-surface);
}

.about-text .location strong {
    font-weight: 600;
}

/* —— Services —— */
.services-section {
    padding: clamp(4rem, 10vw, 7rem) 0;
    background: var(--surface);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.25rem;
}

.service-card {
    background: var(--surface-container);
    padding: 2rem 1.75rem;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-subtle);
    transition: background var(--transition), transform var(--transition),
        border-color var(--transition), box-shadow var(--transition);
}

.service-card:hover {
    background: var(--surface-container);
    transform: translateY(-3px);
    border-color: var(--border-strong);
    box-shadow: var(--shadow-soft);
}

.service-icon {
    margin-bottom: 1.25rem;
    color: var(--primary);
}

.service-card h3 {
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    margin-bottom: 0.85rem;
    color: var(--on-surface);
}

.service-card p {
    font-size: 0.95rem;
    margin: 0;
    line-height: 1.65;
}

/* —— Projects —— */
.projects-section {
    padding: clamp(4rem, 10vw, 7rem) 0;
    background: var(--surface-low);
}

.project-card {
    display: flex;
    flex-wrap: wrap;
    gap: clamp(1.5rem, 3vw, 2.5rem);
    align-items: center;
    background: var(--surface-container);
    border-radius: var(--radius-lg);
    padding: clamp(1.75rem, 3vw, 2.5rem);
    margin-top: 2.5rem;
    border: 1px solid var(--border-subtle);
    box-shadow: var(--shadow-soft);
    transition: background var(--transition), border-color var(--transition),
        box-shadow var(--transition);
}

.project-card:hover {
    background: var(--surface-container);
    border-color: var(--border-strong);
    box-shadow: var(--shadow-lift);
}

.project-content {
    flex: 1 1 280px;
    min-width: 260px;
}

.project-content h3 {
    font-size: clamp(1.5rem, 2.5vw, 1.85rem);
    margin-bottom: 1rem;
    color: var(--on-surface);
}

.project-content p {
    font-size: 1rem;
    margin-bottom: 1.5rem;
}

.project-features {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem 0.65rem;
    margin-bottom: 1.5rem;
}

.project-features span {
    background: var(--surface-low);
    padding: 0.4rem 0.85rem;
    border-radius: 999px;
    font-size: 0.8rem;
    color: var(--on-surface-variant);
    border: 1px solid var(--border-subtle);
}

.project-cta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.project-image {
    flex: 1 1 260px;
    min-width: 220px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.project-image img {
    border-radius: var(--radius-md);
    border: 1px solid var(--border-subtle);
    box-shadow: var(--shadow-soft);
}

/* —— Experience (dot timeline, no heavy line) —— */
.experience-section {
    padding: clamp(4rem, 10vw, 7rem) 0;
    background: var(--surface);
}

.timeline {
    max-width: 900px;
    margin: 0 auto;
}

.timeline-item {
    display: grid;
    grid-template-columns: minmax(0, 7.5rem) 1.25rem 1fr;
    gap: 0 1rem;
    margin-bottom: 2.5rem;
    align-items: start;
}

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

.timeline::before,
.timeline-item::before {
    display: none;
}

.timeline-marker {
    grid-column: 2;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: linear-gradient(145deg, #42a1ff, var(--primary));
    margin-top: 0.35rem;
    box-shadow: 0 0 0 3px rgba(0, 113, 227, 0.15);
}

.timeline-date {
    position: static;
    grid-column: 1;
    text-align: right;
    padding-right: 0;
    color: var(--on-surface-variant);
    font-weight: 600;
    font-size: 0.8rem;
    line-height: 1.45;
}

.timeline-content {
    grid-column: 3;
    background: var(--surface-container);
    padding: 1.5rem 1.5rem 1.35rem;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-subtle);
    box-shadow: var(--shadow-soft);
}

.timeline-content h3 {
    margin-bottom: 0.35rem;
    font-size: 1.15rem;
}

.timeline-content h4 {
    color: var(--primary);
    margin-bottom: 1rem;
    font-size: 0.95rem;
    font-weight: 600;
    font-family: var(--font-body);
}

.timeline-content ul {
    padding-left: 0;
}

.timeline-content li {
    margin-bottom: 1rem;
    position: relative;
    padding-left: 0;
    color: var(--on-surface-variant);
    font-size: 0.95rem;
    line-height: 1.65;
}

.timeline-content li::before {
    display: none;
}

.timeline-content li strong {
    color: var(--on-surface);
    font-weight: 600;
}

/* —— Resume —— */
.resume-section {
    padding: clamp(4rem, 10vw, 7rem) 0;
    background: var(--surface-low);
    text-align: center;
}

.resume-section p {
    max-width: 36rem;
    margin-left: auto;
    margin-right: auto;
}

/* —— Contact —— */
.contact-section {
    padding: clamp(2.75rem, 7vw, 4.75rem) 0 clamp(4rem, 10vw, 7rem);
    background: var(--surface);
}

.contact-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: clamp(2rem, 4vw, 3rem);
    align-items: start;
}

.contact-info h3 {
    margin-bottom: 1rem;
}

.social-links {
    margin-top: 2rem;
}

.social-links h4 {
    margin-bottom: 0.75rem;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--on-surface-variant);
    font-weight: 600;
}

.social-links ul {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem 1.5rem;
}

.social-links a {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--on-surface-variant);
    font-size: 0.95rem;
}

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

.social-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--on-surface);
}

.social-icon svg {
    transition: transform 0.25s ease;
}

.social-links a:hover .social-icon svg {
    transform: scale(1.06);
}

.contact-form {
    background: var(--surface-container);
    padding: 2rem 1.75rem;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-subtle);
    box-shadow: var(--shadow-soft);
}

.form-group {
    margin-bottom: 1.35rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.45rem;
    font-weight: 600;
    font-size: 0.875rem;
    color: var(--on-surface-variant);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.85rem 1rem;
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-md);
    font-family: var(--font-body);
    font-size: 1rem;
    transition: border-color var(--transition), box-shadow var(--transition);
    background: var(--surface-highest);
    color: var(--on-surface);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: rgba(0, 0, 0, 0.35);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: rgba(0, 113, 227, 0.45);
    box-shadow: 0 0 0 3px rgba(0, 113, 227, 0.12);
}

.error-message {
    display: block;
    margin-top: 0.35rem;
    font-size: 0.8125rem;
    color: #b42318;
}

/* —— Footer —— */
footer {
    background: var(--surface-low);
    padding: 2.25rem 0;
    border-top: 1px solid var(--border-subtle);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

footer p {
    margin: 0;
    font-size: 0.875rem;
    color: var(--on-surface-variant);
}

.footer-links {
    display: flex;
    gap: 1.25rem;
}

.footer-links a {
    font-size: 0.875rem;
    color: var(--on-surface-variant);
}

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

/* —— Responsive —— */
@media (max-width: 992px) {
    .hero {
        padding-top: calc(var(--nav-h) + 1.25rem);
    }

    .hero .container {
        transform: translateY(-0.45rem);
    }

    .hero-content {
        padding-right: 0;
    }
}

@media (max-width: 768px) {
    :root {
        --nav-h: 3.75rem;
    }

    .hamburger {
        display: block;
    }

    .nav-brand {
        display: none;
    }

    .nav-actions {
        display: none;
    }

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

    .hamburger.active .bar:nth-child(2) {
        opacity: 0;
    }

    .hamburger.active .bar:nth-child(1) {
        transform: translateY(7px) rotate(45deg);
    }

    .hamburger.active .bar:nth-child(3) {
        transform: translateY(-7px) rotate(-45deg);
    }

    .nav-menu {
        position: fixed;
        left: 0;
        right: 0;
        top: var(--nav-h);
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        background: rgba(251, 251, 253, 0.97);
        backdrop-filter: blur(16px);
        -webkit-backdrop-filter: blur(16px);
        padding: 0.75rem 0 1.25rem;
        border-bottom: 1px solid var(--border-subtle);
        box-shadow: var(--shadow-lift);
        max-height: calc(100vh - var(--nav-h) - env(safe-area-inset-bottom, 0px));
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
        transform: translateY(-120%);
        opacity: 0;
        visibility: hidden;
        pointer-events: none;
        transition: transform 0.32s ease, opacity 0.32s ease, visibility 0.32s;
    }

    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
        pointer-events: all;
    }

    .nav-menu li {
        margin: 0;
    }

    .nav-menu-utility {
        display: block;
    }

    .nav-menu a {
        display: block;
        padding: 0.95rem 1.5rem;
        font-size: 1rem;
        border-radius: 0;
    }

    .nav-menu-utility a {
        color: var(--on-surface-variant);
        font-weight: 500;
    }

    .nav-menu a.active {
        box-shadow: none;
        border-left: 3px solid var(--primary);
        padding-left: calc(1.5rem - 3px);
    }

    .timeline-item {
        grid-template-columns: 1fr;
        gap: 0.5rem;
    }

    .timeline-date {
        text-align: left;
        font-size: 0.75rem;
        letter-spacing: 0.02em;
    }

    .timeline-marker {
        display: none;
    }

    .timeline-content {
        grid-column: 1;
    }

    .cta-buttons .btn.primary-btn {
        width: 100%;
    }

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

    .hero .hero-cta-link {
        justify-content: center;
    }

    .footer-content {
        flex-direction: column;
        text-align: center;
    }

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

    .project-image {
        order: -1;
    }

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

    .project-cta .btn {
        width: 100%;
    }
}

@media (max-width: 576px) {
    :root {
        --hero-image-scale: 1;
        --hero-image-x: 50%;
        --hero-image-y: 46%;
        --hero-image-offset-y: 1%;
    }

    .hero {
        min-height: auto;
        padding-bottom: 2.5rem;
    }

    .hero .container {
        flex-direction: column;
        transform: none;
    }

    .hero-content {
        order: 2;
        text-align: center;
    }

    .hero-headline {
        max-width: none;
        margin-left: auto;
        margin-right: auto;
    }

    .hero-image {
        order: 1;
        max-width: min(280px, 88vw);
        width: 100%;
    }

    .hero-lede {
        margin-left: auto;
        margin-right: auto;
    }

    .cta-buttons {
        justify-content: center;
    }

    .section-title {
        margin-bottom: 1.75rem;
    }

    .timeline-content {
        padding: 1.15rem;
    }

    .timeline-content li {
        font-size: 0.9rem;
    }
}

@media (max-width: 428px) {
    :root {
        --hero-image-scale: 0.98;
        --hero-image-x: 50%;
        --hero-image-y: 46%;
        --hero-image-offset-y: 0.8%;
    }

    .hero-image {
        max-width: 240px;
    }

    .container {
        width: 92%;
    }
}