/* Modern CSS Reset & Variables */
:root {
    /* Dark Theme (Default) */
    --bg-color: #0a0a0a;
    --surface-color: #1a1a1a;
    --text-primary: #ffffff;
    --text-secondary: #a0a0a0;
    --accent-color: #646cff;
    --accent-hover: #747bff;
    --border-color: #333;
    --font-main: 'Inter', system-ui, -apple-system, sans-serif;
    --transition: all 0.3s ease;
    --container-width: 1200px;
    --hero-overlay: linear-gradient(180deg, rgba(10, 10, 10, 0) 0%, #0a0a0a 100%);
    /* Grid / boxed background variables (theme-aware) */
    --grid-bg: #0a0a0a;
    --grid-line: rgba(142, 115, 167, 0.12);
    --grid-size: 30px;
    --grid-line-width: 1.5px;
    --grid-opacity: 1;
}

[data-theme="light"] {
    --bg-color: #f0f2f5;
    --surface-color: #ffffff;
    --text-primary: #213547;
    --text-secondary: #4a4a4a;
    --accent-color: #646cff;
    --accent-hover: #535bf2;
    --border-color: #e0e0e0;
    --hero-overlay: linear-gradient(180deg, rgba(240, 242, 245, 0) 0%, #f0f2f5 100%);
    /* Lighter grid for light theme */
    --grid-bg: #ffffff;
    --grid-line: #8e73a7;
    --grid-size: 30px;
    --grid-line-width: 1.5px;
    --grid-opacity: 0.8;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-main);
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    cursor: none;
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* Background Pattern (updated per user request) */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    /* Theme-aware boxed background using variables */
    background-color: var(--grid-bg);
    background-image: linear-gradient(var(--grid-line) var(--grid-line-width), transparent var(--grid-line-width)),
        linear-gradient(to right, var(--grid-line) var(--grid-line-width), var(--grid-bg) var(--grid-line-width));
    background-size: var(--grid-size) var(--grid-size);
    opacity: var(--grid-opacity);
    z-index: -1;
    pointer-events: none;
}

@keyframes gridMove {
    0% {
        transform: translateY(0);
    }

    100% {
        transform: translateY(50px);
    }
}

/* Custom Cursor */
.cursor {
    width: 8px;
    height: 8px;
    background-color: var(--accent-color);
    border-radius: 50%;
    position: fixed;
    pointer-events: none;
    z-index: 9999;
    transition: transform 0.1s ease, width 0.3s ease, height 0.3s ease;
    transform: translate(-50%, -50%);
    box-shadow: 0 0 10px var(--accent-color);
}

.cursor::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 30px;
    height: 30px;
    border: 1px solid var(--accent-color);
    border-radius: 50%;
    opacity: 0.5;
    transition: width 0.3s ease, height 0.3s ease;
}

.cursor.hover {
    width: 20px;
    height: 20px;
    background-color: transparent;
    border: 2px solid var(--accent-color);
}

.cursor.hover::after {
    width: 50px;
    height: 50px;
    border-color: var(--accent-hover);
    background: rgba(100, 108, 255, 0.05);
}

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

ul {
    list-style: none;
}

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

/* Layout Utilities */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 2rem;
}

.section {
    padding: 5rem 0;
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 3rem;
    text-align: center;
    background: linear-gradient(to right, var(--accent-color), var(--accent-hover));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Header & Nav */
header {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(var(--bg-color), 0.8);
    /* Needs RGB conversion for true transparency, but this works if hex matches */
    background: var(--surface-color);
    /* Fallback/Solid for now */
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid var(--border-color);
    transition: background-color 0.3s ease, border-color 0.3s ease;
}

/* Fix for rgba with hex var (simplified) */
@supports (background: color-mix(in srgb, var(--bg-color), transparent 20%)) {
    header {
        background: color-mix(in srgb, var(--bg-color), transparent 20%);
    }
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

.nav-links {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-links a {
    color: var(--text-secondary);
    font-weight: 500;
    position: relative;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--text-primary);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-color);
    transition: width 0.3s ease;
}

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

/* Theme Toggle */
#theme-toggle {
    background: none;
    border: none;
    cursor: none;
    /* Use custom cursor */
    color: var(--text-primary);
    padding: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: background-color 0.3s ease;
}

#theme-toggle:hover {
    background-color: var(--surface-color);
}

.sun-icon {
    display: none;
}

.moon-icon {
    display: block;
}

[data-theme="light"] .sun-icon {
    display: block;
}

[data-theme="light"] .moon-icon {
    display: none;
}

/* Hero Section */
#hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding-top: 70px;
    position: relative;
    overflow: hidden;
}

.hero-wrapper {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 4rem;
    align-items: center;
}

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

.img-container {
    width: 450px;
    height: 65  0px;
    border-radius: 20px;
    overflow: hidden;
    position: relative;
    box-shadow: 20px 20px 0px var(--surface-color), 20px 20px 0px 2px var(--border-color);
    transition: transform 0.3s ease;
}

.img-container:hover {
    transform: translate(-5px, -5px);
    box-shadow: 25px 25px 0px var(--surface-color), 25px 25px 0px 2px var(--accent-color);
    
}

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

.hero-content {
    text-align: left;
}

.hero-content h1 {
    font-size: 4.5rem;
    margin-bottom: 1.5rem;
    line-height: 1.1;
    font-weight: 800;
}

.wave {
    display: inline-block;
    animation: wave 2.5s infinite;
    transform-origin: 70% 70%;
}

@keyframes wave {
    0% {
        transform: rotate(0deg);
    }

    10% {
        transform: rotate(14deg);
    }

    20% {
        transform: rotate(-8deg);
    }

    30% {
        transform: rotate(14deg);
    }

    40% {
        transform: rotate(-4deg);
    }

    50% {
        transform: rotate(10deg);
    }

    60% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(0deg);
    }
}

.hero-content p {
    font-size: 1.5rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
}

.hero-description {
    background: rgba(255, 255, 255, 0.02);
    -webkit-backdrop-filter: blur(4px);
    backdrop-filter: blur(4px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    padding: 1.5rem 2rem;
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.1);
}

[data-theme="light"] .hero-description {
    background: rgba(255, 255, 255, 0.4);
    border: 1px solid rgba(0, 0, 0, 0.1);
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.05);
}

.hero-description .highlight-text {
    position: relative;
    transition: color 0.3s ease;
    border-bottom: 2px dotted var(--text-secondary);
}

.container:hover .hero-description .highlight-text {
    color: var(--accent-color);
    font-weight: 600;
    border-bottom: 2px dotted var(--accent-color);
}

.hero-description {
    max-width: 600px;
}

.hero-socials {
    justify-content: flex-start;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    margin-top: 1rem;
}

.cta-button {
    display: inline-block;
    padding: 1rem 2.5rem;
    background-color: var(--accent-color);
    color: white;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1.1rem;
    box-shadow: 0 4px 15px rgba(100, 108, 255, 0.3);
    text-decoration: none;
    transition: var(--transition);
}

.resume-button {
    background-color: #ff4757;
    box-shadow: 0 4px 15px rgba(255, 71, 87, 0.3);
}

.cta-button:hover {
    background-color: var(--accent-hover);
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(100, 108, 255, 0.4);
}

.resume-button:hover {
    background-color: #ff3838;
    box-shadow: 0 8px 25px rgba(255, 71, 87, 0.4);
}

/* Marquee */
.marquee-container {
    width: 100%;
    overflow: hidden;
    background: var(--surface-color);
    padding: 1.5rem 0;
    margin-top: 4rem;
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
    position: relative;
    transform: rotate(-2deg) scale(1.05);
}

.marquee-content {
    display: flex;
    white-space: nowrap;
    animation: marquee 20s linear infinite;
}

.marquee-content span {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-secondary);
    padding: 0 2rem;
    text-transform: uppercase;
    letter-spacing: 2px;
}

@keyframes marquee {
    0% {
        transform: translateX(0);
    }

    100% {
        transform: translateX(-50%);
    }
}

/* About Section */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

.about-card {
    background: var(--surface-color);
    padding: 2.5rem;
    border-radius: 16px;
    border: 1px solid var(--border-color);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.about-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    border-color: var(--accent-color);
}

.about-card h3 {
    margin-bottom: 2rem;
    color: var(--accent-color);
    font-size: 1.5rem;
}

.timeline-item {
    margin-bottom: 2rem;
    padding-left: 1.5rem;
    border-left: 2px solid var(--border-color);
    position: relative;
    transition: border-color 0.3s ease;
}

.timeline-item:hover {
    border-left-color: var(--accent-color);
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -6px;
    top: 0;
    width: 10px;
    height: 10px;
    background: var(--bg-color);
    border: 2px solid var(--accent-color);
    border-radius: 50%;
}

.timeline-date {
    font-size: 0.9rem;
    color: var(--accent-color);
    margin-bottom: 0.5rem;
    font-weight: 600;
}

/* Projects Section */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2.5rem;
}

.project-card {
    background: var(--surface-color);
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
    position: relative;
}

.project-img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    display: block;
    border-bottom: 1px solid var(--border-color);
}

.project-card:hover {
    transform: translateY(-10px);
    border-color: var(--accent-color);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.project-content {
    padding: 2rem;
}

.project-content h3 {
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.project-content p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    font-size: 1rem;
}

.tags {
    display: flex;
    gap: 0.8rem;
    flex-wrap: wrap;
    margin-bottom: 1.5rem;
}

.tag {
    font-size: 0.85rem;
    padding: 0.4rem 1rem;
    background: rgba(100, 108, 255, 0.1);
    color: var(--accent-color);
    border-radius: 100px;
    font-weight: 500;
}

.project-link {
    font-size: 1rem;
    font-weight: 600;
    color: var(--accent-color);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.project-link:hover {
    gap: 0.8rem;
}

/* Skills Section */
.skills-grid {
    display: flex;
    flex-direction: column;
    gap: 3rem;
    max-width: 900px;
    margin: 0 auto;
}

.skill-category h3 {
    font-size: 1.5rem;
    margin-bottom: 2rem;
    color: var(--accent-color);
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.5rem;
    display: inline-block;
}

.skills-list {
    display: flex;
    gap: 3rem;
    flex-wrap: wrap;
    justify-content: center;
}

.skill-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    cursor: pointer;
    transition: transform 0.3s ease;
}

.skill-item i {
    font-size: 4rem;
    width: auto;
    height: auto;
    min-width: 64px;
    /* Ensure minimum space */
    text-align: center;
    color: var(--skill-color);
    transition: all 0.3s ease;
}

.skill-item svg {
    width: 64px;
    height: 64px;
    color: var(--skill-color);
    transition: all 0.3s ease;
}

/* Hover Effects */
.skill-item:hover {
    transform: translateY(-5px);
}

.skill-item:hover i {
    background: linear-gradient(135deg, var(--skill-color) 0%, #ffffff 50%, var(--skill-color) 100%);
    background-size: 200% 200%;
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: gradientShine 2s linear infinite;
    text-shadow: 0 0 15px rgba(255, 255, 255, 0.3);
}

.skill-item:hover svg {
    filter: drop-shadow(0 0 10px var(--skill-color)) brightness(1.2);
    transform: scale(1.1);
}

/* Next.js special case (white text on dark check) */
/* Ideally Next.js icon is just black/white. We used --skill-color: #ffffff */

@keyframes gradientShine {
    0% {
        background-position: 0% 50%;
    }

    100% {
        background-position: 200% 50%;
    }
}

/* Skill color classes */
.skill-html { --skill-color: #E34F26; }
.skill-css { --skill-color: #1572B6; }
.skill-js { --skill-color: #F7DF1E; }
.skill-tailwind { --skill-color: #38B2AC; }
.skill-nextjs { --skill-color: var(--text-primary); }
.skill-react { --skill-color: #61DAFB; }
.skill-bootstrap { --skill-color: #7952B3; }
.skill-wordpress { --skill-color: #21759B; }
.skill-vscode { --skill-color: #007ACC; }
.skill-git { --skill-color: #F05032; }
.skill-github { --skill-color: var(--text-primary); }

.skill-item span {
    font-weight: 500;
    color: var(--text-secondary);
    transition: color 0.3s ease;
}

.skill-item:hover span {
    color: var(--text-primary);
}

/* Contact/Footer */
footer {
    background: var(--surface-color);
    padding: 5rem 0;
    text-align: center;
    margin-top: 6rem;
    border-top: 1px solid var(--border-color);
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 2.5rem;
    margin-bottom: 2rem;
}

.hero-socials {
    margin-bottom: 2.5rem;
    gap: 1.5rem;
}

.social-links img {
    filter: invert(1);
    /* Default dark mode: white icons */
    opacity: 0.7;
    transition: var(--transition);
}

[data-theme="light"] .social-links img {
    filter: invert(0);
    /* Light mode: black icons */
}

.social-links a:hover img {
    opacity: 1;
    transform: scale(1.2) rotate(5deg);
}

/* Animations */
.hidden {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s cubic-bezier(0.5, 0, 0, 1);
}

.show {
    opacity: 1;
    transform: translateY(0);
}

/* Responsive */
@media (max-width: 968px) {
    .hero-wrapper {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 3rem;
    }

    .hero-image {
        order: -1;
    }

    .hero-content {
        text-align: center;
        display: flex;
        flex-direction: column;
        align-items: center;
    }

    .hero-socials {
        justify-content: center;
    }

    .img-container {
        width: 280px;
        height: 350px;
    }
}

@media (max-width: 768px) {
    .hero-content h1 {
        font-size: 3rem;
    }

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

    .nav-links a {
        display: none;
    }

    /* Keep toggle visible */
    .nav-links #theme-toggle {
        display: flex;
        margin-left: auto;
    }

    .nav-links {
        width: 100%;
        justify-content: flex-end;
    }
}