/**
 * Unity Developer Portfolio - Styles
 * Dark theme with neon accents and glassmorphism
 */

/* ===== CSS Variables ===== */
:root {
    /* Colors */
    --color-bg-primary: #0a0a0f;
    --color-bg-secondary: #12121a;
    --color-bg-tertiary: #1a1a2e;
    --color-bg-card: rgba(26, 26, 46, 0.8);

    --color-accent: #00d4ff;
    --color-accent-alt: #7b2cbf;
    --color-accent-gradient: linear-gradient(135deg, #00d4ff 0%, #7b2cbf 100%);

    --color-text-primary: #ffffff;
    --color-text-secondary: #b0b0c0;
    --color-text-muted: #6c6c7c;

    --color-border: rgba(255, 255, 255, 0.1);
    --color-glow: rgba(0, 212, 255, 0.3);

    /* Typography */
    --font-heading: 'JetBrains Mono', monospace;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

    /* Spacing */
    --nav-height: 70px;
    --container-max: 1200px;
    --section-padding: 100px;

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;

    /* Borders */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
}

/* ===== Light Theme ===== */
.light-theme {
    --color-bg-primary: #f5f7fa;
    --color-bg-secondary: #e8ecf1;
    --color-bg-tertiary: #dde3eb;
    --color-bg-card: rgba(255, 255, 255, 0.9);

    --color-text-primary: #1a1a2e;
    --color-text-secondary: #4a5568;
    --color-text-muted: #718096;

    --color-border: rgba(0, 0, 0, 0.1);
    --color-glow: rgba(0, 180, 220, 0.2);
}

/* Theme transition */
body.theme-transitioning,
body.theme-transitioning * {
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease !important;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-text-primary);
    background: var(--color-bg-primary);
    overflow-x: hidden;
}

/* ===== Utility ===== */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
}

section {
    padding: var(--section-padding) 0;
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

.section-title {
    font-family: var(--font-heading);
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--color-text-primary);
}

.title-decorator {
    color: var(--color-accent);
    margin-right: 8px;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--color-text-secondary);
    margin-bottom: 48px;
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 28px;
    font-family: var(--font-heading);
    font-size: 0.95rem;
    font-weight: 500;
    text-decoration: none;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    transition: all var(--transition-normal);
}

.btn-primary {
    background: var(--color-accent-gradient);
    color: var(--color-bg-primary);
    box-shadow: 0 4px 20px var(--color-glow);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px var(--color-glow);
}

.btn-secondary {
    background: transparent;
    color: var(--color-text-primary);
    border: 2px solid var(--color-accent);
}

.btn-secondary:hover {
    background: var(--color-accent);
    color: var(--color-bg-primary);
}

.btn-large {
    padding: 18px 36px;
    font-size: 1.1rem;
}

/* ===== Navigation ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--nav-height);
    z-index: 1000;
    transition: all var(--transition-normal);
}

.navbar.scrolled {
    background: rgba(10, 10, 15, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
}

.light-theme .navbar.scrolled {
    background: rgba(245, 247, 250, 0.95);
}

.nav-container {
    max-width: var(--container-max);
    height: 100%;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text-primary);
    text-decoration: none;
}

.logo-bracket {
    color: var(--color-accent);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 8px;
}

.nav-link {
    display: block;
    padding: 10px 20px;
    color: var(--color-text-secondary);
    text-decoration: none;
    font-weight: 500;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.nav-link:hover {
    color: var(--color-accent);
    background: rgba(0, 212, 255, 0.1);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

.nav-social {
    display: flex;
    gap: 16px;
}

.nav-social a {
    color: var(--color-text-secondary);
    font-size: 1.25rem;
    transition: color var(--transition-fast);
}

.nav-social a:hover {
    color: var(--color-accent);
}

/* Theme Toggle */
.lang-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 50%;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.lang-toggle:hover {
    border-color: var(--color-accent);
    box-shadow: 0 0 15px var(--color-glow);
    transform: scale(1.1);
}

.lang-label {
    font-family: var(--font-heading);
    font-size: 0.7rem;
    font-weight: 700;
    color: var(--color-accent);
    letter-spacing: 0.5px;
}

.theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 50%;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.theme-toggle:hover {
    border-color: var(--color-accent);
    box-shadow: 0 0 15px var(--color-glow);
    transform: scale(1.1);
}

.theme-toggle i {
    font-size: 1.1rem;
    color: var(--color-accent);
    transition: transform var(--transition-fast);
}

.theme-toggle:hover i {
    transform: rotate(15deg);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 30px;
    height: 30px;
    background: transparent;
    border: none;
    cursor: pointer;
}

.hamburger,
.hamburger::before,
.hamburger::after {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--color-text-primary);
    border-radius: 2px;
    transition: all var(--transition-fast);
}

.hamburger {
    position: relative;
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
}

.hamburger::before {
    top: -8px;
}

.hamburger::after {
    bottom: -8px;
}

.nav-toggle.active .hamburger {
    background: transparent;
}

.nav-toggle.active .hamburger::before {
    top: 0;
    transform: rotate(45deg);
}

.nav-toggle.active .hamburger::after {
    bottom: 0;
    transform: rotate(-45deg);
}

/* ===== Hero Section ===== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding-top: var(--nav-height);
    overflow: hidden;
    opacity: 1;
    transform: none;
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: -1;
}

.hero-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(0, 212, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 212, 255, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    animation: gridMove 20s linear infinite;
}

@keyframes gridMove {
    0% {
        transform: perspective(500px) rotateX(60deg) translateY(0);
    }

    100% {
        transform: perspective(500px) rotateX(60deg) translateY(50px);
    }
}

.hero-glow {
    position: absolute;
    top: 30%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, var(--color-glow) 0%, transparent 70%);
    filter: blur(80px);
    animation: pulse 4s ease-in-out infinite;
}

@keyframes pulse {

    0%,
    100% {
        opacity: 0.5;
        transform: translate(-50%, -50%) scale(1);
    }

    50% {
        opacity: 0.8;
        transform: translate(-50%, -50%) scale(1.1);
    }
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero-greeting {
    font-size: 1.1rem;
    color: var(--color-accent);
    font-weight: 500;
    margin-bottom: 8px;
    letter-spacing: 2px;
    text-transform: uppercase;
}

.hero-title {
    font-family: var(--font-heading);
    font-size: clamp(3rem, 10vw, 5rem);
    font-weight: 700;
    margin-bottom: 16px;
    background: var(--color-accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-family: var(--font-heading);
    font-size: clamp(1.2rem, 3vw, 1.5rem);
    color: var(--color-text-secondary);
    margin-bottom: 24px;
}

.cursor {
    animation: blink 1s step-end infinite;
    color: var(--color-accent);
}

@keyframes blink {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0;
    }
}

.hero-description {
    font-size: 1.1rem;
    color: var(--color-text-secondary);
    margin-bottom: 36px;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

.hero-description strong {
    color: var(--color-accent);
}

.hero-scroll {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    animation: bounce 2s infinite;
}

.hero-scroll a {
    color: var(--color-text-muted);
    font-size: 1.5rem;
    transition: color var(--transition-fast);
}

.hero-scroll a:hover {
    color: var(--color-accent);
}

@keyframes bounce {

    0%,
    20%,
    50%,
    80%,
    100% {
        transform: translateX(-50%) translateY(0);
    }

    40% {
        transform: translateX(-50%) translateY(-10px);
    }

    60% {
        transform: translateX(-50%) translateY(-5px);
    }
}

/* ===== About Section ===== */
.about {
    background: var(--color-bg-secondary);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: start;
}

.about-bio {
    font-size: 1.1rem;
    color: var(--color-text-secondary);
    margin-bottom: 24px;
    line-height: 1.8;
}

.about-text .btn {
    margin-top: 16px;
}

.tech-title {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    color: var(--color-text-primary);
    margin-bottom: 24px;
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

.tech-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    padding: 20px 16px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    backdrop-filter: blur(10px);
    transition: all var(--transition-normal);
}

.tech-item i {
    font-size: 2rem;
    color: var(--color-accent);
}

.tech-item span {
    font-size: 0.85rem;
    color: var(--color-text-secondary);
    font-weight: 500;
}

.tech-item:hover {
    transform: translateY(-5px);
    border-color: var(--color-accent);
    box-shadow: 0 10px 30px rgba(0, 212, 255, 0.15);
}

/* ===== Projects Section ===== */
.projects {
    background: var(--color-bg-primary);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.project-card {
    position: relative;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    backdrop-filter: blur(10px);
    transition: all var(--transition-normal);
    opacity: 0;
    transform: translateY(30px);
}

.project-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.project-card:hover {
    transform: translateY(-10px);
    border-color: var(--color-accent);
    box-shadow: 0 20px 50px rgba(0, 212, 255, 0.15);
}

.project-card.featured {
    border-color: rgba(123, 44, 191, 0.5);
}

.project-card.featured:hover {
    border-color: var(--color-accent-alt);
    box-shadow: 0 20px 50px rgba(123, 44, 191, 0.2);
}

.project-image {
    position: relative;
    aspect-ratio: 16 / 9;
    overflow: hidden;
    background: var(--color-bg-tertiary);
}

.project-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

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

.featured-badge {
    position: absolute;
    top: 16px;
    right: 16px;
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    background: var(--color-accent-alt);
    color: white;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: 20px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.project-content {
    padding: 24px;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 16px;
}

.project-tag {
    padding: 4px 12px;
    background: rgba(0, 212, 255, 0.1);
    color: var(--color-accent);
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: 20px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.project-title {
    font-family: var(--font-heading);
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--color-text-primary);
}

.project-description {
    font-size: 0.95rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: 20px;
}

.project-links {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.project-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 18px;
    font-size: 0.85rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.project-link--play {
    background: var(--color-accent);
    color: var(--color-bg-primary);
}

.project-link--play:hover {
    background: #00b8e0;
    transform: translateY(-2px);
}

.project-link--code {
    background: rgba(255, 255, 255, 0.1);
    color: var(--color-text-primary);
    border: 1px solid var(--color-border);
}

.project-link--code:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: var(--color-text-secondary);
}

.project-link--video {
    background: rgba(255, 0, 0, 0.15);
    color: #ff4444;
    border: 1px solid rgba(255, 68, 68, 0.3);
}

.project-link--video:hover {
    background: rgba(255, 0, 0, 0.25);
}

.projects-error {
    grid-column: 1 / -1;
    text-align: center;
    padding: 60px 20px;
    color: var(--color-text-muted);
}

.projects-error i {
    font-size: 3rem;
    margin-bottom: 16px;
    color: var(--color-accent-alt);
}

/* ===== Contact Section ===== */
.contact {
    background: var(--color-bg-secondary);
    text-align: center;
}

.contact-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 40px;
}

.contact-social {
    display: flex;
    gap: 24px;
}

.social-link {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 20px 30px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    text-decoration: none;
    transition: all var(--transition-normal);
}

.social-link i {
    font-size: 2rem;
    color: var(--color-accent);
}

.social-link span {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    font-weight: 500;
}

.social-link:hover {
    transform: translateY(-5px);
    border-color: var(--color-accent);
    box-shadow: 0 10px 30px var(--color-glow);
}

/* ===== Footer ===== */
.footer {
    padding: 30px 0;
    text-align: center;
    background: var(--color-bg-primary);
    border-top: 1px solid var(--color-border);
}

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

/* ===== Responsive ===== */
@media (max-width: 900px) {
    .about-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .tech-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    :root {
        --section-padding: 60px;
    }

    .nav-menu {
        position: fixed;
        top: var(--nav-height);
        left: 0;
        right: 0;
        flex-direction: column;
        background: rgba(10, 10, 15, 0.98);
        backdrop-filter: blur(20px);
        padding: 20px;
        gap: 0;
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-normal);
    }

    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-social {
        display: none;
    }

    .light-theme .nav-menu {
        background: rgba(245, 247, 250, 0.98);
    }

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

    .contact-social {
        flex-direction: column;
        width: 100%;
        max-width: 300px;
    }

    .social-link {
        flex-direction: row;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .tech-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .hero-title {
        font-size: 2.5rem;
    }
}