:root {
    /*  Color Palette */
    --bg-primary: #121212;
    --bg-secondary: #181818;
    --bg-tertiary: #1f1f1f;
    --bg-surface: #161616;
    --text-primary: #f3efe7;
    --text-secondary: #c1b9ad;
    --text-muted: #9a9085;
    --accent-gold: #bfa16c;
    --accent-gold-hover: #d4b777;
    --border-subtle: #2c2c2c;
    --error-border: rgba(255, 99, 99, 0.45);
    --error-background: rgba(255, 99, 99, 0.08);
    --error-text: #f4d6d6;
    
    /* Typography */
    --font-primary: 'Inter', sans-serif;
    --font-secondary: 'Plus Jakarta Sans', sans-serif;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 2.5rem;
    --spacing-2xl: 3.5rem;
    --spacing-3xl: 5rem;
    
    /* Transitions */
    --transition-smooth: all 0.32s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: all 0.2s ease;
}
 
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}


h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-secondary);
    font-weight: 600;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

h1 {
    font-size: clamp(2.5rem, 6vw, 4rem);
}

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

h3 {
    font-size: clamp(1.25rem, 2.5vw, 1.5rem);
}

p {
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: 1.8;
}

a {
    color: var(--accent-gold);
    text-decoration: none;
    transition: var(--transition-base);
}

a:hover {
    color: var(--accent-gold-hover);
}



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

.section-title {
    font-size: clamp(2rem, 5vw, 2.5rem);
    color: var(--text-primary);
    margin-bottom: var(--spacing-3xl);
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -0.5rem;
    left: 0;
    width: 4rem;
    height: 0.125rem;
    background-color: var(--accent-gold);
}



.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(18, 18, 18, 0.9);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    padding: 0.9rem 0;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-md);
}

.logo {
    font-family: var(--font-secondary);
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.03em;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-xl);
    align-items: center;
}

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

.nav-link {
    font-size: 0.95rem;
    color: var(--text-secondary);
    font-weight: 500;
    transition: color 0.24s ease, opacity 0.24s ease;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -0.33rem;
    left: 0;
    width: 0;
    height: 0.1rem;
    background-color: var(--accent-gold);
    transition: width 0.28s ease;
}

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

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

.cta-link {
    border: 1px solid var(--accent-gold);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: 0.25rem;
    color: var(--accent-gold);
    transition: var(--transition-base);
}

.cta-link:hover {
    background-color: var(--accent-gold);
    color: var(--bg-primary);
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 0.3rem;
    padding: 0.4rem;
}

.hamburger span {
    width: 1.5rem;
    height: 0.16rem;
    background-color: var(--text-primary);
    border-radius: 999px;
    transition: transform 0.25s ease, background 0.25s ease;
}

.hamburger:hover span {
    background-color: var(--accent-gold);
}



.hero {
    min-height: calc(100vh - 5rem);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    margin-top: 5rem;
    padding: var(--spacing-3xl) 0;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 34% 42%, rgba(191, 161, 108, 0.09) 0%, transparent 32%),
                radial-gradient(circle at 68% 54%, rgba(191, 161, 108, 0.06) 0%, transparent 35%);
    z-index: -1;
}

.hero-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    z-index: 1;
}

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

.hero-title {
    color: var(--text-primary);
    font-size: clamp(3rem, 5vw, 4.5rem);
    letter-spacing: -0.06em;
    line-height: 0.95;
}

.hero-subtitle {
    font-size: 1.15rem;
    color: var(--accent-gold);
    font-weight: 500;
    letter-spacing: -0.01em;
}

.hero-description {
    font-size: 1.05rem;
    color: var(--text-secondary);
    max-width: 520px;
    line-height: 1.9;
}

.hero-cta {
    display: flex;
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
    flex-wrap: wrap;
}

.btn {
    padding: 0.95rem 2.4rem;
    border-radius: 0.5rem;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition-smooth);
    border: none;
    text-decoration: none;
    display: inline-block;
    text-align: center;
    font-family: var(--font-primary);
    letter-spacing: 0.4px;
}

.btn-primary {
    background-color: var(--accent-gold);
    color: var(--bg-primary);
    border: 1px solid transparent;
    box-shadow: 0 16px 40px rgba(191, 161, 108, 0.12);
}

.btn-primary:hover {
    background-color: rgba(191, 161, 108, 0.9);
    border-color: rgba(191, 161, 108, 0.18);
    box-shadow: 0 18px 36px rgba(0, 0, 0, 0.16);
    transform: translateY(-2px);
}

.btn-secondary {
    background-color: transparent;
    color: var(--accent-gold);
    border: 1.2px solid rgba(191, 161, 108, 0.75);
}

.btn-secondary:hover {
    background-color: rgba(191, 161, 108, 0.12);
    border-color: var(--accent-gold-hover);
    color: var(--accent-gold-hover);
}

.btn-muted {
    background-color: rgba(18, 18, 18, 0.96);
    color: var(--text-primary);
    border: 1.2px solid rgba(191, 161, 108, 0.9);
    box-shadow: 0 14px 28px rgba(0, 0, 0, 0.18);
}

.btn-muted:hover {
    background-color: rgba(255, 255, 255, 0.05);
    border-color: rgba(191, 161, 108, 1);
    transform: translateY(-1px);
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.image-frame {
    position: relative;
    width: 100%;
    max-width: 430px;
    aspect-ratio: 1;
    background: linear-gradient(135deg, var(--bg-surface) 0%, var(--bg-tertiary) 100%);
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: 0.75rem;
    overflow: hidden;
    box-shadow: 0 26px 72px rgba(0, 0, 0, 0.35);
}

.profile-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.image-frame::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(191, 161, 108, 0.08) 0%, transparent 50%);
    pointer-events: none;
}

/*   
   ABOUT SECTION
    */

.about {
    padding: var(--spacing-3xl) 0;
    background-color: #131313;
    border-top: 1px solid rgba(255,255,255,0.05);
    border-bottom: 1px solid rgba(255,255,255,0.05);
}

.about-content {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: var(--spacing-3xl);
    align-items: start;
}

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

.about-text p {
    font-size: 1.05rem;
    line-height: 1.95;
    color: var(--text-secondary);
    max-width: 720px;
}

.about-stats {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
}

.stat {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    padding: 1.5rem;
    background-color: var(--bg-surface);
    border: 1px solid rgba(255,255,255,0.05);
    border-radius: 0.75rem;
    box-shadow: 0 14px 40px rgba(0, 0, 0, 0.2);
}

.stat-number {
    font-size: 2.4rem;
    color: var(--accent-gold);
    font-weight: 700;
}

.stat-label {
    font-size: 0.95rem;
    color: var(--text-muted);
    font-weight: 500;
}

/* 
   EXPERIENCE TIMELINE
    */

.experience {
    padding: var(--spacing-3xl) 0;
    background-color: #111111;
    border-top: 1px solid rgba(255,255,255,0.05);
    border-bottom: 1px solid rgba(255,255,255,0.05);
}

.timeline {
    max-width: 800px;
    position: relative;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--accent-gold), transparent);
}

.timeline-item {
    margin-bottom: var(--spacing-3xl);
    padding-left: var(--spacing-3xl);
    position: relative;
}

.timeline-marker {
    position: absolute;
    left: -0.5rem;
    top: 0.5rem;
    width: 1rem;
    height: 1rem;
    background-color: var(--accent-gold);
    border: 3px solid var(--bg-primary);
    border-radius: 50%;
    transition: var(--transition-base);
}

.timeline-item:hover .timeline-marker {
    transform: scale(1.3);
    box-shadow: 0 0 20px rgba(212, 165, 116, 0.5);
}

.timeline-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.timeline-title {
    font-size: 1.25rem;
    color: var(--text-primary);
}

.timeline-subtitle {
    font-size: 0.95rem;
    color: var(--accent-gold);
    font-weight: 500;
}

.timeline-date {
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.timeline-description {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-top: var(--spacing-sm);
    line-height: 1.8;
}

/*  
   SKILLS SECTION
    */

.skills {
    padding: var(--spacing-3xl) 0;
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border-subtle);
    border-bottom: 1px solid var(--border-subtle);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-2xl);
}

.skill-category {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.category-title {
    font-size: 1.1rem;
    color: var(--text-primary);
    font-weight: 600;
    border-bottom: 1px solid var(--border-subtle);
    padding-bottom: var(--spacing-md);
}

.skills-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.skill-tag {
    padding: var(--spacing-xs) var(--spacing-md);
    background-color: var(--bg-primary);
    border: 1px solid var(--border-subtle);
    border-radius: 0.25rem;
    font-size: 0.9rem;
    color: var(--text-secondary);
    transition: var(--transition-base);
    cursor: pointer;
}

.skill-tag:hover {
    background-color: rgba(212, 165, 116, 0.1);
    border-color: var(--accent-gold);
    color: var(--accent-gold);
    transform: translateY(-2px);
}

/* 
   WORK SECTION
    */

.work {
    padding: var(--spacing-3xl) 0;
    background-color: #121212;
    border-top: 1px solid rgba(255,255,255,0.05);
    border-bottom: 1px solid rgba(255,255,255,0.05);
}

.work-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-2xl);
}

.work-card {
    background-color: #151515;
    border: 1px solid rgba(255,255,255,0.05);
    border-radius: 0.85rem;
    overflow: hidden;
    transition: transform 0.32s ease, border-color 0.32s ease, box-shadow 0.32s ease;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    height: 100%;
}

.work-card:hover {
    border-color: var(--accent-gold);
    transform: translateY(-6px);
    box-shadow: 0 22px 48px rgba(0, 0, 0, 0.24);
}

.work-image {
    width: 100%;
    height: 260px;
    overflow: hidden;
    background-color: var(--bg-tertiary);
    position: relative;
}

.work-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.45s ease;
}

.work-card:hover .work-image img {
    transform: scale(1.04);
}

.work-info {
    padding: 2rem;
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.work-title {
    font-size: 1.3rem;
    color: var(--text-primary);
}

.work-description {
    font-size: 1rem;
    color: var(--text-secondary);
    flex: 1;
    line-height: 1.8;
}

.work-tags {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.tag {
    font-size: 0.8rem;
    padding: 0.375rem 0.75rem;
    background-color: rgba(212, 165, 116, 0.1);
    color: var(--accent-gold);
    border-radius: 0.25rem;
    font-weight: 500;
}

/*  
   ISVRA TECH SECTION
     */

.isvra {
    padding: var(--spacing-3xl) 0;
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
    border-top: 1px solid var(--border-subtle);
    border-bottom: 1px solid var(--border-subtle);
}

.isvra-content {
    max-width: 800px;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.isvra-header {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.isvra-title {
    font-size: 2.5rem;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

.isvra-tagline {
    font-size: 1.1rem;
    color: var(--accent-gold);
    font-weight: 500;
}

.isvra-description {
    font-size: 1.05rem;
    color: var(--text-secondary);
    line-height: 1.9;
}

.isvra-cta {
    margin-top: var(--spacing-md);
}

/*  
   CERTIFICATES SECTION
     */

.certificates {
    padding: var(--spacing-3xl) 0;
    background-color: #111111;
    border-top: 1px solid rgba(255,255,255,0.05);
    border-bottom: 1px solid rgba(255,255,255,0.05);
}

.certificates-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-2xl);
}

.certificate-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-subtle);
    border-radius: 0.375rem;
    overflow: hidden;
    aspect-ratio: 1;
    transition: var(--transition-smooth);
    cursor: pointer;
}

.certificate-card:hover {
    transform: scale(1.05);
    border-color: var(--accent-gold);
    box-shadow: 0 15px 35px rgba(212, 165, 116, 0.1);
}

.certificate-image {
    width: 100%;
    height: 100%;
    overflow: hidden;
    background-color: var(--bg-tertiary);
}

.certificate-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/*  
   CONTACT SECTION
     */

.contact {
    padding: var(--spacing-3xl) 0;
    background-color: #131313;
    border-top: 1px solid rgba(255,255,255,0.05);
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
}

.contact-form-section,
.contact-info-section {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.contact-subtitle {
    font-size: 1.25rem;
    color: var(--text-primary);
    font-weight: 600;
}

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

.form-group {
    display: flex;
    flex-direction: column;
}

.form-input {
    padding: var(--spacing-md);
    background-color: var(--bg-primary);
    border: 1px solid var(--border-subtle);
    border-radius: 0.375rem;
    color: var(--text-primary);
    font-family: var(--font-primary);
    font-size: 1rem;
    transition: var(--transition-base);
}

.form-label {
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.95rem;
    font-weight: 500;
}

.form-input.invalid {
    border-color: var(--error-border);
    background-color: var(--error-background);
}

.form-input:focus {
    outline: none;
    border-color: var(--accent-gold);
    box-shadow: 0 0 0 3px rgba(212, 165, 116, 0.1);
}

.form-input.invalid:focus {
    border-color: var(--error-border);
    box-shadow: 0 0 0 3px rgba(255, 99, 99, 0.14);
}

.field-error {
    margin-top: 0.5rem;
    color: var(--error-text);
    font-size: 0.9rem;
    min-height: 1.25rem;
}

.form-input::placeholder {
    color: var(--text-secondary);
}

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

.contact-method h4 {
    font-size: 0.95rem;
    color: var(--accent-gold);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.contact-link {
    font-size: 1rem;
    color: var(--text-secondary);
    transition: var(--transition-base);
}

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

.social-links {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.social-link {
    width: fit-content;
    font-size: 0.95rem;
    padding: var(--spacing-xs) 0;
    border-bottom: 1px solid transparent;
    transition: var(--transition-base);
}

.social-link:hover {
    border-bottom-color: var(--accent-gold);
    padding-left: var(--spacing-xs);
}

/*  
   FOOTER
     */

.footer {
    padding: var(--spacing-xl) 0;
    background-color: var(--bg-primary);
    border-top: 1px solid var(--border-subtle);
    text-align: center;
}

.footer p {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.footer-credit {
    margin-top: var(--spacing-sm);
    font-size: 0.85rem !important;
    color: var(--text-secondary);
    opacity: 0.7;
}

/*  
   RESPONSIVE DESIGN
     */

@media (max-width: 768px) {
    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        flex-direction: column;
        background: rgba(24, 24, 24, 0.98);
        border-bottom: 1px solid rgba(255,255,255,0.06);
        padding: var(--spacing-md);
        gap: var(--spacing-md);
        z-index: 999;
    }

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

    .hamburger {
        display: flex;
    }

    .hero-container {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
    }

    .image-frame {
        max-width: 340px;
        margin: 0 auto;
    }

    .about-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
    }

    .about-stats {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-md);
    }

    .stat {
        flex: unset;
    }

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

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

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

    .certificates-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .nav-container {
        padding: 0 var(--spacing-md);
    }

    .container {
        padding: 0 var(--spacing-md);
    }

    .hero-cta {
        gap: var(--spacing-sm);
    }

    .btn {
        padding: var(--spacing-sm) var(--spacing-lg);
        width: 100%;
    }

    .timeline::before {
        left: -0.375rem;
    }

    .timeline-marker {
        left: -0.75rem;
    }

    .timeline-item {
        padding-left: var(--spacing-2xl);
    }
}

@media (max-width: 480px) {
    :root {
        --spacing-lg: 1.5rem;
        --spacing-xl: 2rem;
        --spacing-2xl: 2.5rem;
        --spacing-3xl: 3rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .hero-description {
        font-size: 1rem;
    }

    .nav-container {
        padding: 0 var(--spacing-sm);
    }

    .container {
        padding: 0 var(--spacing-sm);
    }

    .about-stats {
        flex-direction: column;
    }

    .stat {
        padding: var(--spacing-md);
    }

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

    .skill-tag {
        font-size: 0.85rem;
        padding: 0.375rem 0.625rem;
    }

    .work-image {
        height: 200px;
    }

    .hero {
        margin-top: 3rem;
        padding: var(--spacing-2xl) 0;
    }

    .about,
    .experience,
    .skills,
    .work,
    .isvra,
    .certificates,
    .contact {
        padding: var(--spacing-2xl) 0;
    }

    .section-title {
        margin-bottom: var(--spacing-2xl);
    }
}

/*  
   SCROLL ANIMATIONS
     */

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-fade-in {
    animation: fadeInUp 0.6s ease forwards;
}

/*  
   UTILITY ANIMATIONS
     */

@keyframes subtle-float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-10px);
    }
}

.float {
    animation: subtle-float 3s ease-in-out infinite;
}