/* Global Variables */
:root {
    --color-bg: #0a0a0a;
    --color-surface: #121212;
    --color-surface-hover: #1e1e1e;

    --color-text: #e5e5e5;
    --color-text-muted: #a3a3a3;

    --color-primary: #3b82f6;
    /* Electric Blue */
    --color-primary-glow: rgba(59, 130, 246, 0.5);

    --color-accent: #8b5cf6;
    /* Purple */
    --color-accent-glow: rgba(139, 92, 246, 0.5);

    --font-main: 'Inter', sans-serif;

    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 8rem;

    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;

    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.1);
    --shadow-glow: 0 0 20px var(--color-primary-glow);

    --transition-fast: 0.2s ease;
    --transition-smooth: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

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

a {
    color: inherit;
    text-decoration: none;
    transition: var(--transition-fast);
}

ul {
    list-style: none;
}

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

button {
    font-family: inherit;
    border: none;
    background: none;
    cursor: pointer;
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
    line-height: 1.1;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: #fff;
}

h1 {
    font-size: 3.5rem;
}

h2 {
    font-size: 2.5rem;
}

h3 {
    font-size: 1.75rem;
}

p {
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-muted);
}

.text-gradient {
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
    /* Fallback */
}

/* Language Visibility */
.hidden {
    display: none !important;
}

/* Language Switcher */
.lang-switcher button {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--color-text-muted);
    font-weight: 500;
    transition: var(--transition-fast);
}

.lang-switcher button:hover {
    color: #fff;
}

.lang-icon {
    font-size: 1.2rem;
}

/* Utility Classes */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
    font-weight: 500;
    transition: var(--transition-fast);
}

.btn-primary {
    background: var(--color-primary);
    color: #fff;
    box-shadow: 0 4px 14px 0 rgba(59, 130, 246, 0.39);
}

.btn-primary:hover {
    background: #2563eb;
    box-shadow: 0 6px 20px rgba(59, 130, 246, 0.23);
    transform: translateY(-1px);
}

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

/* Ambient Glow Effect */
#cursor-glow {
    position: fixed;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, var(--color-primary-glow) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
    transform: translate(-50%, -50%);
    z-index: -1;
    opacity: 0.15;
    transition: opacity 0.5s ease;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: var(--spacing-sm) 0;
    background: rgba(10, 10, 10, 0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.header_inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: #fff;
    letter-spacing: -0.05em;
}

.nav-list {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
}

.nav-link {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-text-muted);
}

.nav-link:hover {
    color: #fff;
}

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
}

.menu-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background-color: #fff;
    transition: 0.3s;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px;
    /* offset fixed header */
    position: relative;
    overflow: hidden;
}

.hero_inner {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: var(--spacing-lg);
    align-items: center;
}

.eyebrow {
    display: inline-block;
    font-size: 0.875rem;
    color: var(--color-primary);
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    margin-bottom: var(--spacing-sm);
    padding: 0.5rem 1rem;
    background: rgba(59, 130, 246, 0.1);
    border-radius: 100px;
    border: 1px solid rgba(59, 130, 246, 0.2);
}

.hero_title {
    font-size: 4rem;
    line-height: 1.1;
    margin-bottom: var(--spacing-md);
    letter-spacing: -0.02em;
}

.hero_desc {
    font-size: 1.125rem;
    max-width: 540px;
    margin-bottom: var(--spacing-lg);
    color: var(--color-text-muted);
}

.hero_btns {
    display: flex;
    gap: var(--spacing-sm);
}

.btn-outline {
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: #fff;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
}

.btn-outline:hover {
    border-color: #fff;
    background: rgba(255, 255, 255, 0.05);
}

/* Hero Visual & Gravity Effects */
.hero_visual {
    position: relative;
    height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.gravity-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    z-index: -1;
}

.orb-1 {
    width: 300px;
    height: 300px;
    background: var(--color-primary);
    opacity: 0.2;
    top: -50px;
    right: -50px;
    animation: float 10s ease-in-out infinite;
}

.orb-2 {
    width: 200px;
    height: 200px;
    background: var(--color-accent);
    opacity: 0.2;
    bottom: 0;
    left: 20px;
    animation: float 14s ease-in-out infinite reverse;
}

.code-card {
    background: rgba(18, 18, 18, 0.8);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
    transform: rotate(-5deg);
    animation: float-card 6s ease-in-out infinite;
}

pre {
    color: #a3a3a3;
    font-family: 'Fira Code', monospace;
    font-size: 0.9rem;
}

@keyframes float {

    0%,
    100% {
        transform: translate(0, 0);
    }

    50% {
        transform: translate(20px, -20px);
    }
}

@keyframes float-card {

    0%,
    100% {
        transform: rotate(-5deg) translateY(0);
    }

    50% {
        transform: rotate(-5deg) translateY(-20px);
    }
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .nav-list {
        display: none;
        /* Hide nav on mobile initially */
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: var(--color-bg);
        flex-direction: column;
        padding: var(--spacing-md);
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }

    .nav-list.active {
        display: flex;
    }

    .menu-toggle {
        display: flex;
    }

    .hero_inner {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero_visual {
        order: -1;
        /* Visual/Orb on top or maybe subtle */
        height: 300px;
    }

    .hero_title {
        font-size: 2.5rem;
    }

    .hero_btns {
        justify-content: center;
    }

    .eyebrow {
        margin: 0 auto var(--spacing-sm);
    }

    .hero_desc {
        margin: 0 auto var(--spacing-lg);
    }
}

/* Sections General */
.section {
    padding: var(--spacing-xl) 0;
}

.bg-surface {
    background-color: var(--color-surface);
}

.section_title {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-lg);
}

/* About Section */
.about_grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
}

.about_text p {
    font-size: 1.1rem;
    margin-bottom: var(--spacing-md);
}

.skills_grid {
    display: grid;
    gap: var(--spacing-sm);
}

.skill-card {
    background: var(--color-surface);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.skill-card h3 {
    font-size: 1rem;
    margin-bottom: 0.5rem;
}

.progress-bar {
    width: 100%;
    height: 6px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 3px;
    overflow: hidden;
}

.progress {
    height: 100%;
    background: var(--color-primary);
    border-radius: 3px;
    transition: width 1s ease-in-out;
}

/* Portfolio Section */
.projects_grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
}

.project-card {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: var(--transition-smooth);
    position: relative;
    top: 0;
}

.project-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-glow);
    border-color: var(--color-primary);
}

.project-image {
    height: 200px;
    overflow: hidden;
}

.img-placeholder {
    width: 100%;
    height: 100%;
    transition: transform 0.5s ease;
}

.project-card:hover .img-placeholder {
    transform: scale(1.05);
}

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

.project-tags {
    display: flex;
    gap: 0.5rem;
    margin-top: var(--spacing-sm);
}

.project-tags span {
    font-size: 0.75rem;
    padding: 0.25rem 0.5rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
    color: var(--color-text-muted);
}

/* Services Section */
.services_grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
}

.service-card {
    padding: var(--spacing-md);
    background: var(--color-bg);
    /* Contrast against surface bg */
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: var(--transition-fast);
}

.service-card:hover {
    border-color: var(--color-accent);
    transform: translateY(-5px);
}

.service-icon {
    font-size: 2rem;
    margin-bottom: var(--spacing-sm);
}

/* Contact Section */
.contact_inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
}

.contact-mail {
    display: inline-block;
    font-size: 1.5rem;
    font-weight: 700;
    color: #fff;
    margin-top: var(--spacing-sm);
    text-decoration: underline;
    text-decoration-color: var(--color-primary);
    text-underline-offset: 4px;
}

.contact_form {
    background: var(--color-surface);
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

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

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    background: var(--color-bg);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-sm);
    color: #fff;
    font-family: inherit;
    transition: var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.2);
}

/* Footer style update */
.footer {
    padding: var(--spacing-md) 0;
    text-align: center;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .section {
        padding: var(--spacing-lg) 0;
    }

    .section_title {
        font-size: 2rem;
    }

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

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