:root {
    --accent: #10b981;
    --accent-light: #34d399;
    --accent-dark: #059669;
    --secondary: #3b82f6;
    --secondary-light: #60a5fa;
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --border: #334155;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-feature-settings: "cv02", "cv03", "cv04", "cv11";
}

::selection {
    background-color: var(--accent);
    color: var(--bg-primary);
}

html:focus-within {
    scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
    html:focus-within {
        scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }

    [data-aos] {
        opacity: 1 !important;
        transform: none !important;
        transition: none !important;
    }
}

#header {
    background: transparent;
    border-bottom: 1px solid transparent;
}

#header.scrolled {
    background: rgba(15, 23, 42, 0.9);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom-color: rgba(51, 65, 85, 0.5);
}

.nav-link {
    position: relative;
    color: var(--text-secondary);
    font-weight: 500;
    padding: 0.5rem 0;
    transition: color 0.2s ease;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent);
    transition: width 0.3s ease;
}

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

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

.nav-link:focus-visible {
    outline: none;
}

.nav-link-cta {
    color: var(--accent);
    font-weight: 600;
    padding: 0.5rem 1.25rem;
    border: 1px solid var(--accent);
    border-radius: 0.5rem;
    transition: all 0.3s ease;
}

.nav-link-cta:hover,
.nav-link-cta:focus-visible {
    background: var(--accent);
    color: var(--bg-primary);
}

.nav-link-cta:focus-visible {
    outline: 2px solid var(--accent-light);
    outline-offset: 2px;
}

.mobile-nav-link {
    display: block;
    padding: 0.75rem 0;
    color: var(--text-secondary);
    font-size: 1.125rem;
    font-weight: 500;
    transition: color 0.2s ease;
}

.mobile-nav-link:hover,
.mobile-nav-link:focus-visible {
    color: var(--accent);
}

#menu-toggle[aria-expanded="true"] .menu-icon {
    display: none;
}

#menu-toggle[aria-expanded="true"] .close-icon {
    display: block;
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 1rem 2rem;
    background: linear-gradient(135deg, var(--accent) 0%, var(--secondary) 100%);
    color: white;
    font-weight: 600;
    border-radius: 0.75rem;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    touch-action: manipulation;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 40px rgba(16, 185, 129, 0.3);
}

.btn-primary:focus-visible {
    outline: none;
    box-shadow: 0 0 0 3px var(--bg-primary), 0 0 0 5px var(--accent);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 1rem 2rem;
    border: 1px solid var(--border);
    color: var(--text-secondary);
    font-weight: 600;
    border-radius: 0.75rem;
    transition: all 0.3s ease;
    touch-action: manipulation;
}

.btn-secondary:hover {
    border-color: var(--accent);
    color: var(--accent);
    background: rgba(16, 185, 129, 0.05);
}

.btn-secondary:focus-visible {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--bg-primary), 0 0 0 5px var(--accent);
}

@media (max-width: 1023px) {
    .about-image-col {
        display: flex;
        justify-content: center;
        width: 100%;
    }

    .about-image-wrapper {
        max-width: 440px;
        width: 100%;
    }

    .about-image-container {
        width: 100%;
    }

    .about-image {
        width: 100%;
        height: auto;
        max-width: 100%;
    }
}

@media (max-width: 767px) {
    .about-image-col {
        padding: 0 15%;
    }
}

@media (min-width: 1024px) {
    .about-image-container {
        overflow: hidden;
        border-radius: 1rem;
        max-height: 420px;
    }

    .about-image {
        width: 100%;
        height: 100%;
        object-fit: cover;
        object-position: top center;
    }
}

@media (min-width: 1280px) {
    .about-image-container {
        max-height: 440px;
    }
}

@media (min-width: 1536px) {
    .about-image-container {
        max-height: 550px;
    }
}

.section-title {
    font-size: 1.875rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 3rem;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.section-title::after {
    content: '';
    flex: 1;
    height: 1px;
    background: linear-gradient(90deg, var(--border), transparent);
    max-width: 300px;
}

@media (min-width: 768px) {
    .section-title {
        font-size: 2.25rem;
    }
}

.card {
    background: rgba(30, 41, 59, 0.5);
    border: 1px solid rgba(51, 65, 85, 0.5);
    border-radius: 1rem;
    padding: 1.5rem;
    transition: all 0.3s ease;
}

.card:hover {
    border-color: rgba(16, 185, 129, 0.3);
    background: rgba(30, 41, 59, 0.8);
    transform: translateY(-4px);
}

.tag {
    display: inline-flex;
    padding: 0.25rem 0.75rem;
    font-size: 0.75rem;
    font-weight: 600;
    font-family: 'JetBrains Mono', monospace;
    color: var(--accent);
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.2);
    border-radius: 9999px;
}

.skill-tag {
    display: inline-flex;
    padding: 0.25rem 0.625rem;
    font-size: 0.6875rem;
    font-weight: 500;
    color: var(--text-muted);
    background: rgba(51, 65, 85, 0.5);
    border-radius: 0.375rem;
}

.tech-tag {
    display: inline-flex;
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    background: rgba(30, 41, 59, 0.5);
    border: 1px solid var(--border);
    border-radius: 0.5rem;
    transition: all 0.2s ease;
}

.tech-tag:hover {
    border-color: var(--accent);
    color: var(--accent);
    background: rgba(16, 185, 129, 0.05);
}

.timeline-item {
    position: relative;
    padding-bottom: 2rem;
}

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

.timeline-content {
    margin-left: 3rem;
}

.timeline-dot {
    position: absolute;
    left: 0;
    top: 0;
    width: 1rem;
    height: 1rem;
    background: var(--accent);
    border-radius: 9999px;
    border: 4px solid var(--bg-primary);
    z-index: 10;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.timeline-item:hover .timeline-dot {
    transform: scale(1.25);
    box-shadow: 0 0 20px rgba(16, 185, 129, 0.5);
}

@media (min-width: 768px) {
    .timeline-dot {
        left: 50%;
        transform: translateX(-50%);
    }

    .timeline-item:hover .timeline-dot {
        transform: translateX(-50%) scale(1.25);
    }

    .timeline-content {
        width: calc(50% - 0.5rem);
        margin-left: 0;
    }

    .timeline-item:nth-child(odd) .timeline-content {
        margin-left: auto;
        margin-right: 0;
        padding-left: 1.5rem;
        padding-right: 0;
        text-align: left;
    }

    .timeline-item:nth-child(even) .timeline-content {
        margin-left: 0;
        margin-right: auto;
        padding-right: 1.5rem;
        padding-left: 0;
        text-align: right;
    }

    .timeline-item:nth-child(even) .card {
        text-align: right;
    }

    .timeline-item:nth-child(even) .flex-wrap,
    .timeline-item:nth-child(even) .flex {
        justify-content: flex-end;
    }

    .timeline-item:nth-child(even) ul {
        text-align: right;
    }

    .timeline-item:nth-child(odd) .flex-wrap,
    .timeline-item:nth-child(odd) .flex {
        justify-content: flex-start;
    }

    .timeline-item:nth-child(odd) ul {
        text-align: left;
    }
}

@media (min-width: 1280px) {
    .timeline-content {
        width: calc(50% - 0.25rem);
    }

    .timeline-item:nth-child(odd) .timeline-content {
        padding-left: 1.25rem;
    }

    .timeline-item:nth-child(even) .timeline-content {
        padding-right: 1.25rem;
    }
}

.skill-card {
    background: rgba(30, 41, 59, 0.3);
    border: 1px solid rgba(51, 65, 85, 0.5);
    border-radius: 1rem;
    padding: 2rem;
    transition: all 0.3s ease;
}

.skill-card:hover {
    border-color: rgba(16, 185, 129, 0.3);
    background: rgba(30, 41, 59, 0.5);
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(16, 185, 129, 0.1);
}

.skill-icon-wrapper {
    width: 3.5rem;
    height: 3.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(16, 185, 129, 0.1);
    border-radius: 0.75rem;
    color: var(--accent);
    margin-bottom: 1.5rem;
    transition: all 0.3s ease;
}

.skill-card:hover .skill-icon-wrapper {
    background: rgba(16, 185, 129, 0.2);
    transform: scale(1.1);
}

.skill-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem 0;
    border-bottom: 1px solid rgba(51, 65, 85, 0.3);
}

.skill-item:last-child {
    border-bottom: none;
}

.skill-name {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.skill-level {
    color: var(--accent);
    font-size: 0.75rem;
    font-weight: 600;
    font-family: 'JetBrains Mono', monospace;
}

.contact-link {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    gap: 1rem;
}

.contact-icon {
    width: 3rem;
    height: 3rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(30, 41, 59, 0.5);
    border: 1px solid var(--border);
    border-radius: 0.75rem;
    color: var(--accent);
    transition: all 0.3s ease;
}

.contact-link:hover .contact-icon {
    background: var(--accent);
    border-color: var(--accent);
    color: var(--bg-primary);
    transform: scale(1.1);
}

.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 3rem;
    height: 3rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--accent) 0%, var(--secondary) 100%);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(1rem);
    transition: opacity 0.3s ease, visibility 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease;
    z-index: 50;
    box-shadow: 0 4px 20px rgba(16, 185, 129, 0.3);
}

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

.back-to-top:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 30px rgba(16, 185, 129, 0.4);
}

.back-to-top:focus-visible {
    outline: none;
    box-shadow: 0 0 0 3px var(--bg-primary), 0 0 0 5px var(--accent);
}

.back-to-top:active {
    transform: translateY(-2px);
}

@media (max-width: 640px) {
    .back-to-top {
        bottom: 1.5rem;
        right: 1.5rem;
        width: 2.75rem;
        height: 2.75rem;
    }
}

#hero {
    position: relative;
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
    overflow: hidden;
}

.hero-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    opacity: 0.3;
    filter: saturate(0.8);
}

.hero-bg::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(
        180deg,
        rgba(15, 23, 42, 0.2) 0%,
        rgba(15, 23, 42, 0.5) 50%,
        rgba(15, 23, 42, 0.9) 85%,
        rgba(15, 23, 42, 1) 100%
    );
    z-index: 1;
}

.hero-light {
    position: absolute;
    inset: 0;
    z-index: 2;
    overflow: hidden;
    pointer-events: none;
}

.hero-light::after {
    content: '';
    position: absolute;
    top: 10%;
    right: 10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(
        ellipse at center,
        rgba(16, 185, 129, 0.15) 0%,
        transparent 60%
    );
    animation: hero-glow-pulse 8s ease-in-out infinite;
}

@keyframes hero-glow-pulse {
    0%, 100% {
        opacity: 0.6;
        transform: scale(1);
    }
    50% {
        opacity: 1;
        transform: scale(1.15);
    }
}

@keyframes float {
    0%, 100% {
        transform: translateY(0) translateX(0);
    }
    50% {
        transform: translateY(-20px) translateX(-10px);
    }
}

@keyframes float-delayed {
    0%, 100% {
        transform: translateY(0) translateX(0);
    }
    50% {
        transform: translateY(-15px) translateX(10px);
    }
}

.animate-float {
    animation: float 8s ease-in-out infinite;
}

.animate-float-delayed {
    animation: float-delayed 10s ease-in-out infinite;
    animation-delay: -5s;
}

.bg-gradient-radial {
    background: radial-gradient(circle, var(--tw-gradient-stops));
}

a:focus-visible,
button:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

* {
    scrollbar-width: thin;
    scrollbar-color: var(--border) var(--bg-primary);
}

.text-wrap-balance {
    text-wrap: balance;
}

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

.sr-only:focus {
    position: absolute;
    width: auto;
    height: auto;
    padding: 0;
    margin: 0;
    overflow: visible;
    clip: auto;
    white-space: normal;
}

/* Scroll animations - vanilla replacement for AOS */
[data-aos] {
    opacity: 0;
    transition-property: opacity, transform;
    transition-duration: 600ms;
    transition-timing-function: cubic-bezier(0.33, 1, 0.68, 1);
    pointer-events: none;
}

[data-aos="fade-up"] {
    transform: translateY(30px);
}

[data-aos="fade-left"] {
    transform: translateX(30px);
}

[data-aos="fade-right"] {
    transform: translateX(-30px);
}

[data-aos].aos-animate {
    opacity: 1;
    transform: none;
    pointer-events: auto;
}

@media print {
    header,
    .animate-float,
    .animate-float-delayed {
        display: none !important;
    }

    body {
        background: white;
        color: black;
    }

    .card {
        border: 1px solid #ccc;
        break-inside: avoid;
    }
}