:root {
    --color-paper: #fbfaf7;
    --color-mist: #eef3ef;
    --color-clay: #b95c43;
    --color-honey: #caa86a;
    --color-sage: #5f7c6f;
    --color-ink: #2f3432;
    --color-stone: #6c716e;
    --color-line: #ded9cf;

    
    --bg-primary: var(--color-paper);
    --bg-secondary: var(--color-mist);
    --text-primary: var(--color-ink);
    --text-secondary: var(--color-stone);
    --accent-primary: var(--color-clay);
    --accent-secondary: var(--color-sage);
    --accent-warm: var(--color-honey);

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

    
    --font-display: 'Playfair Display', serif;
    --font-body: 'Inter', sans-serif;

    
    --radius-sm: 6px;
    --radius-md: 8px;
    --shadow-sm: 0 2px 10px rgba(47, 52, 50, 0.07);
    --shadow-md: 0 8px 24px rgba(47, 52, 50, 0.1);
    --shadow-lg: 0 18px 45px rgba(47, 52, 50, 0.14);

    
    --ease-out: cubic-bezier(0.23, 1, 0.32, 1);
    --ease-in-out: cubic-bezier(0.77, 0, 0.175, 1);
}



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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    background:
        linear-gradient(180deg, rgba(238, 243, 239, 0.65) 0%, rgba(251, 250, 247, 0) 34rem),
        var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
}



h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: 0;
}

h1 {
    font-size: clamp(2rem, 5vw, 3.5rem);
}

h2 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
}

h3 {
    font-size: 1.5rem;
}

p {
    font-size: 1rem;
    color: var(--text-secondary);
}



.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

@media (max-width: 768px) {
    .container {
        padding: 0 var(--spacing-md);
    }
}



.header {
    position: sticky;
    top: 0;
    background-color: rgba(251, 250, 247, 0.92);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(95, 124, 111, 0.18);
    z-index: 100;
    box-shadow: var(--shadow-sm);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md) 0;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
}

.logo-link {
    text-decoration: none;
    color: var(--accent-primary);
    font-family: var(--font-display);
    transition: color 200ms var(--ease-out);
}

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

.logo-link:focus-visible,
.nav-link:focus-visible,
.btn:focus-visible,
.expand-btn:focus-visible,
.close-btn:focus-visible,
.info-text a:focus-visible {
    outline: 3px solid rgba(95, 124, 111, 0.32);
    outline-offset: 4px;
}

.nav-list {
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-end;
    list-style: none;
    gap: var(--spacing-lg);
}

.nav-link {
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 500;
    font-size: 0.95rem;
    position: relative;
    transition: color 200ms var(--ease-out);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--accent-primary), var(--accent-warm));
    transition: width 200ms var(--ease-out);
}

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

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

@media (max-width: 768px) {
    .header-content {
        align-items: flex-start;
        flex-direction: column;
    }

    .nav-list {
        justify-content: flex-start;
        gap: var(--spacing-sm);
        font-size: 0.9rem;
    }
}



.main {
    min-height: calc(100vh - 80px);
}

.section {
    padding: var(--spacing-2xl) 0;
    opacity: 0;
    animation: fadeInUp 600ms var(--ease-out) forwards;
}

.section.active {
    display: block;
}

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



.section-about {
    background:
        linear-gradient(135deg, rgba(251, 250, 247, 0.96) 0%, rgba(238, 243, 239, 0.88) 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.section-about::before {
    content: '';
    position: absolute;
    inset: auto 0 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(185, 92, 67, 0.24), transparent);
    pointer-events: none;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
    position: relative;
    z-index: 1;
}

.about-text h1 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    line-height: 1.1;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
    line-height: 1.6;
}

.cta-buttons {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
    align-items: center;
}

.btn {
    padding: 0.8rem 1.25rem;
    border: 1px solid transparent;
    border-radius: 999px;
    font-family: var(--font-body);
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all 200ms var(--ease-out);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    line-height: 1.2;
    width: fit-content;
}

.btn-primary {
    background: var(--accent-primary);
    color: #fff;
    border-color: var(--accent-primary);
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
    background: #9f4934;
    border-color: #9f4934;
    color: #fff;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-primary:active {
    transform: scale(0.98);
}

.btn-secondary {
    background-color: transparent;
    color: var(--accent-primary);
    border-color: rgba(185, 92, 67, 0.42);
}

.btn-secondary:hover {
    background-color: rgba(185, 92, 67, 0.08);
    border-color: var(--accent-primary);
    color: var(--accent-primary);
    transform: translateY(-2px);
}

.btn-secondary:active {
    transform: scale(0.98);
}

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

.profile-photo {
    width: 300px;
    height: 300px;
    border-radius: 50%;
    object-fit: cover;
    box-shadow: var(--shadow-lg);
    animation: float 4s ease-in-out infinite;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-20px);
    }
}

@media (max-width: 768px) {
    .about-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }

    .section-about {
        min-height: auto;
        padding: var(--spacing-xl) 0;
    }

    .gradient-box {
        width: 200px;
        height: 200px;
    }

    .cta-buttons {
        align-items: flex-start;
    }
}



.section-title {
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    text-align: center;
}

.section-subtitle {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-2xl);
    font-size: 1.1rem;
    max-width: 42rem;
    margin-left: auto;
    margin-right: auto;
}



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

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

.project-card {
    background-color: white;
    border: 1px solid rgba(222, 217, 207, 0.76);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all 300ms var(--ease-out);
    animation: staggerFadeIn 600ms var(--ease-out) forwards;
    cursor: pointer;
    position: relative;
}

.project-card:nth-child(1) { animation-delay: 0ms; }
.project-card:nth-child(2) { animation-delay: 100ms; }
.project-card:nth-child(3) { animation-delay: 200ms; }

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

.project-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}


.project-card.expanded {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 90%;
    max-width: 700px;
    max-height: 85vh;
    z-index: 1000;
    overflow-y: auto;
    border-radius: var(--radius-md);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    animation: expandCard 300ms var(--ease-out) forwards;
}

@keyframes expandCard {
    from {
        opacity: 0;
        transform: translate(-50%, -50%) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translate(-50%, -50%) scale(1);
    }
}


body.modal-open {
    overflow: hidden;
}

.project-card.expanded::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 999;
    animation: fadeInBackdrop 300ms var(--ease-out) forwards;
}

@keyframes fadeInBackdrop {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.project-image {
    width: 100%;
    height: 200px;
    background: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-secondary) 100%);
    background-size: cover;
    background-position: center;
    position: relative;
    overflow: hidden;
}

.project-image::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(180deg, rgba(47, 52, 50, 0) 35%, rgba(47, 52, 50, 0.16) 100%);
}

.project-content {
    padding: var(--spacing-lg);
}

.project-card.expanded .project-content {
    display: none;
}

.project-title {
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.project-description {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    font-size: 0.95rem;
}

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

.tag {
    display: inline-block;
    background-color: var(--bg-secondary);
    color: var(--accent-primary);
    padding: 4px 12px;
    border-radius: 999px;
    font-size: 0.85rem;
    font-weight: 500;
}


.expand-btn {
    margin-top: var(--spacing-md);
    padding: 8px 16px;
    background-color: var(--accent-primary);
    color: white;
    border: none;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 200ms var(--ease-out);
    width: 100%;
}

.expand-btn:hover {
    background-color: var(--accent-secondary);
    transform: translateY(-2px);
}

.expand-btn:active {
    transform: scale(0.98);
}


.project-details {
    display: none;
    padding: var(--spacing-lg);
    background-color: white;
}

.project-card.expanded .project-details {
    display: block;
}

.project-details-content {
    color: var(--text-primary);
    line-height: 1.8;
    font-size: 0.95rem;
}

.project-details-content h1 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    font-size: 1.8rem;
    font-family: var(--font-display);
}

.project-details-content h2 {
    color: var(--accent-primary);
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
    font-size: 1.3rem;
    font-family: var(--font-display);
}

.project-details-content ul {
    margin-left: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    list-style: none;
}

.project-details-content li {
    margin-bottom: var(--spacing-sm);
    color: var(--text-secondary);
    padding-left: var(--spacing-md);
    position: relative;
}

.project-details-content li::before {
    content: '-';
    position: absolute;
    left: 0;
    color: var(--accent-primary);
    font-weight: bold;
}

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

.project-details-content em {
    color: var(--accent-secondary);
    font-style: italic;
}


.close-btn {
    margin-top: var(--spacing-lg);
    padding: 10px 20px;
    background-color: var(--bg-secondary);
    color: var(--accent-primary);
    border: 2px solid var(--accent-primary);
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all 200ms var(--ease-out);
    width: 100%;
}

.close-btn:hover {
    background-color: var(--accent-primary);
    color: white;
    transform: translateY(-2px);
}

.close-btn:active {
    transform: scale(0.98);
}



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

.certifications-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-xl);
}

.cert-item {
    background-color: white;
    border: 1px solid rgba(222, 217, 207, 0.76);
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    display: flex;
    gap: var(--spacing-md);
    transition: all 300ms var(--ease-out);
    animation: staggerFadeIn 600ms var(--ease-out) forwards;
}

.cert-item:nth-child(1) { animation-delay: 0ms; }
.cert-item:nth-child(2) { animation-delay: 100ms; }
.cert-item:nth-child(3) { animation-delay: 200ms; }

.cert-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.cert-icon {
    font-size: 2rem;
    min-width: 50px;
    display: flex;
    align-items: center;
}

.cert-content h3 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.cert-issuer {
    color: var(--accent-primary);
    font-weight: 600;
    font-size: 0.9rem;
}

.cert-date {
    color: var(--text-secondary);
    font-size: 0.85rem;
    margin-top: var(--spacing-xs);
}



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

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

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

.extracurricular-item {
    border-left-color: var(--accent-secondary);
}

.competition-item {
    border-left-color: var(--accent-warm);
}

.experience-list {
    max-width: 800px;
    margin: 0 auto;
}

.experience-item {
    background-color: white;
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
    border-left: 4px solid var(--accent-primary);
    transition: all 300ms var(--ease-out);
    animation: staggerFadeIn 600ms var(--ease-out) forwards;
}

.experience-item:nth-child(1) { animation-delay: 0ms; }
.experience-item:nth-child(2) { animation-delay: 100ms; }
.experience-item:nth-child(3) { animation-delay: 200ms; }

.experience-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.experience-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    margin-bottom: var(--spacing-sm);
    gap: var(--spacing-md);
}

.experience-title {
    color: var(--text-primary);
    margin: 0;
}

.experience-date {
    color: var(--accent-warm);
    font-weight: 600;
    font-size: 0.9rem;
    white-space: nowrap;
}

.experience-company {
    color: var(--accent-primary);
    font-weight: 600;
    font-size: 0.95rem;
    margin-bottom: var(--spacing-sm);
}

.experience-description {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

@media (max-width: 768px) {
    .experience-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .experience-date {
        white-space: normal;
    }
}



.footer {
    background-color: var(--color-ink);
    color: white;
    padding: var(--spacing-lg) 0;
    text-align: center;
    margin-top: var(--spacing-2xl);
}

.footer p {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.95rem;
}



@media (max-width: 768px) {
    .section {
        padding: var(--spacing-xl) 0;
    }

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

    .certifications-list {
        grid-template-columns: 1fr;
    }

    h1 {
        font-size: 2rem;
    }

    h2 {
        font-size: 1.5rem;
    }

    .project-card.expanded {
        width: 95%;
        max-height: 90vh;
    }
}


@media (prefers-reduced-motion: no-preference) {
    html {
        scroll-behavior: smooth;
    }
}


@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}



.section-contact {
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: start;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.info-item {
    background-color: white;
    border: 1px solid rgba(222, 217, 207, 0.76);
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    display: flex;
    gap: var(--spacing-md);
    transition: all 300ms var(--ease-out);
    animation: staggerFadeIn 600ms var(--ease-out) forwards;
}

.info-item:nth-child(1) { animation-delay: 0ms; }
.info-item:nth-child(2) { animation-delay: 100ms; }
.info-item:nth-child(3) { animation-delay: 200ms; }

.info-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.info-icon {
    font-size: 2rem;
    min-width: 50px;
    display: flex;
    align-items: center;
}

.info-text h3 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
    font-size: 1.1rem;
}

.info-text p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.info-text a {
    color: var(--accent-primary);
    text-decoration: none;
    font-weight: 600;
    transition: color 200ms var(--ease-out);
}

.info-text a:hover {
    color: var(--accent-secondary);
}


.contact-form {
    background-color: white;
    border: 1px solid rgba(222, 217, 207, 0.76);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    animation: staggerFadeIn 600ms var(--ease-out) 150ms forwards;
    opacity: 0;
}

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-group label {
    display: block;
    color: var(--text-primary);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    font-size: 0.95rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-sm);
    border: 2px solid var(--bg-secondary);
    border-radius: var(--radius-md);
    font-family: var(--font-body);
    font-size: 0.95rem;
    color: var(--text-primary);
    transition: all 200ms var(--ease-out);
    box-sizing: border-box;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(185, 92, 67, 0.14);
}

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

.contact-form .btn {
    width: 100%;
    margin-top: var(--spacing-md);
}

@media (max-width: 768px) {
    .contact-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }

    .contact-form {
        padding: var(--spacing-lg);
    }
}