/* ===== CSS Variables ===== */
:root {
    --primary-color: #6366f1;
    --primary-hover: #4f46e5;
    --secondary-color: #818cf8;
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-card: #1e293b;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --border-color: #334155;
    --gradient-start: #6366f1;
    --gradient-end: #8b5cf6;
    --shadow-color: rgba(0, 0, 0, 0.3);
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

/* ===== Container ===== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== Navigation ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(15, 23, 42, 0.9);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    text-decoration: none;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 40px;
}

.nav-menu a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: color var(--transition-fast);
}

.nav-menu a:hover {
    color: var(--text-primary);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.nav-toggle span {
    width: 25px;
    height: 2px;
    background: var(--text-primary);
    transition: var(--transition-fast);
}

/* ===== Hero Section ===== */
.hero {
    display: flex;
    align-items: center;
    padding: 90px 24px 40px;
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 40px;
    align-items: center;
}

.hero-content {
    animation: fadeInUp 0.8s ease;
}

.hero-title {
    margin-bottom: 20px;
}

.greeting {
    display: block;
    font-size: 1.25rem;
    font-weight: 400;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.name {
    display: block;
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    font-weight: 700;
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--secondary-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 20px;
}

.hero-description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 32px;
    max-width: 500px;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 28px;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    transition: all var(--transition-normal);
    cursor: pointer;
}

.btn-primary {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    color: white;
    border: none;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(99, 102, 241, 0.3);
}

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

.btn-secondary:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.hero-image {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 24px;
    animation: fadeInUp 0.8s ease 0.2s both;
}

.image-wrapper {
    position: relative;
    width: 200px;
    height: 200px;
}

.hero-social {
    display: flex;
    gap: 12px;
    justify-content: center;
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    color: var(--text-secondary);
    transition: all var(--transition-normal);
}

.social-link:hover {
    color: var(--primary-color);
    border-color: var(--primary-color);
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(99, 102, 241, 0.3);
}

.social-link svg {
    width: 20px;
    height: 20px;
}


.image-wrapper::before {
    content: '';
    position: absolute;
    inset: -15px;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    border-radius: 50%;
    opacity: 0.2;
    animation: pulse 3s ease-in-out infinite;
}

.image-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
    border: 4px solid var(--border-color);
    position: relative;
    z-index: 1;
}

/* ===== Section Styles ===== */
.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 40px;
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    margin: 16px auto 0;
    border-radius: 2px;
}

/* ===== About Section ===== */
.about {
    padding: 60px 0;
    background: var(--bg-secondary);
}

.about-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.about-content p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.about-content strong {
    color: var(--text-primary);
}

.skills {
    margin-top: 48px;
}

.skills h3 {
    font-size: 1.25rem;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px;
}

.skill-tag {
    background: var(--bg-primary);
    color: var(--secondary-color);
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
    border: 1px solid var(--border-color);
    transition: all var(--transition-fast);
    cursor: default;
    user-select: none;
}

.skill-tag:hover {
    border-color: var(--primary-color);
    transform: translateY(-2px);
}

/* ===== Personal Project Section ===== */
.personal-project {
    padding: 40px 0 20px;
    background: var(--bg-primary);
}

.personal-project-card {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(139, 92, 246, 0.1));
    border: 2px solid transparent;
    border-radius: 20px;
    padding: 32px;
    text-align: center;
    position: relative;
    overflow: hidden;
    background-clip: padding-box;
}

.personal-project-row {
    display: flex;
    align-items: center;
    gap: 20px;
}

.personal-project-content {
    flex: 1;
    min-width: 0;
}

.personal-project-gif {
    width: 130px;
    flex-shrink: 0;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    transition: all var(--transition-normal);
    cursor: pointer;
}

.personal-project-gif:hover {
    border-color: var(--primary-color);
    transform: scale(1.2);
    box-shadow: 0 8px 25px rgba(99, 102, 241, 0.3);
}

.personal-project-card::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 20px;
    padding: 2px;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    pointer-events: none;
}

.personal-project-badge {
    display: inline-block;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    color: white;
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 16px;
}

.personal-project-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.personal-project-subtitle {
    color: var(--primary-color);
    font-size: 1.1rem;
    font-weight: 500;
    margin-bottom: 20px;
}

.personal-project-tags {
    display: flex;
    gap: 10px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 20px;
}

.personal-project-tags span {
    background: rgba(99, 102, 241, 0.15);
    color: var(--primary-color);
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
    border: 1px solid rgba(99, 102, 241, 0.3);
}

.personal-project-description {
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto 24px;
    line-height: 1.7;
}

.personal-project-note {
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-top: 16px;
    opacity: 0.8;
}

.personal-project-links {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.personal-project-links .btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.personal-project-links .btn svg {
    width: 18px;
    height: 18px;
}

@media (max-width: 968px) {
    .personal-project-row {
        flex-wrap: wrap;
        justify-content: center;
    }

    .personal-project-content {
        order: -1;
        flex-basis: 100%;
    }

    .personal-project-gif {
        width: calc(25% - 15px);
        min-width: 100px;
    }
}

@media (max-width: 768px) {
    .personal-project-card {
        padding: 30px 20px;
    }

    .personal-project-title {
        font-size: 1.5rem;
    }

    .personal-project-links {
        flex-direction: column;
        align-items: center;
    }

    .personal-project-gif {
        width: calc(50% - 10px);
        min-width: 80px;
    }
}

/* ===== Projects Section ===== */
.projects {
    padding: 60px 0;
    background: var(--bg-primary);
}

.project-card {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
    padding: 40px;
    background: var(--bg-card);
    border-radius: 16px;
    margin-bottom: 40px;
    border: 1px solid var(--border-color);
    transition: all var(--transition-normal);
    overflow: visible;
    position: relative;
}

.project-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-4px);
    box-shadow: 0 20px 40px var(--shadow-color);
}

.project-card.reverse {
    direction: rtl;
}

.project-card.reverse > * {
    direction: ltr;
}

.project-images {
    display: flex;
    gap: 12px;
    align-items: stretch;
    height: 220px;
    overflow: hidden;
    border-radius: 12px;
    background: var(--bg-primary);
    position: relative;
}

.project-img {
    flex: 1;
    min-width: 0;
    height: 100%;
    border-radius: 8px;
    object-fit: cover;
    object-position: center top;
    border: 1px solid var(--border-color);
    transition: all var(--transition-normal);
    cursor: pointer;
}

.project-img:hover {
    border-color: var(--primary-color);
    transform: scale(1.02);
    box-shadow: 0 4px 20px rgba(99, 102, 241, 0.3);
}

/* Lightbox */
.lightbox {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    cursor: pointer;
    padding: 20px;
}

.lightbox.active {
    opacity: 1;
    visibility: visible;
}

.lightbox img {
    max-width: 90%;
    max-height: 90%;
    object-fit: contain;
    border-radius: 12px;
    box-shadow: 0 25px 80px rgba(0, 0, 0, 0.5);
    transform: scale(0.9);
    transition: transform 0.3s ease;
}

.lightbox.active img {
    transform: scale(1);
}

.lightbox::after {
    content: '×';
    position: absolute;
    top: 20px;
    right: 30px;
    font-size: 3rem;
    color: white;
    cursor: pointer;
    opacity: 0.7;
    transition: opacity 0.2s ease;
}

.lightbox:hover::after {
    opacity: 1;
}

.project-content {
    padding: 20px 0;
}

.project-title {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.project-highlight {
    display: inline-block;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    color: white;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 12px;
}

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

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 20px;
}

.project-tags span {
    background: var(--bg-primary);
    color: var(--text-muted);
    padding: 6px 12px;
    border-radius: 6px;
    font-size: 0.8rem;
    font-weight: 500;
}

.project-links {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.project-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    transition: color var(--transition-fast);
}

.project-link:hover {
    color: var(--secondary-color);
}

.project-link svg {
    width: 20px;
    height: 20px;
}

/* ===== Contact Section ===== */
.contact {
    padding: 100px 0;
    background: var(--bg-secondary);
    text-align: center;
}

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

.contact-links {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 24px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 24px;
    background: var(--bg-primary);
    border-radius: 12px;
    text-decoration: none;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
    transition: all var(--transition-normal);
}

.contact-item:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    transform: translateY(-4px);
}

.contact-item svg {
    width: 24px;
    height: 24px;
    flex-shrink: 0;
}

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

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

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

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
        opacity: 0.2;
    }
    50% {
        transform: scale(1.05);
        opacity: 0.3;
    }
}

/* ===== Responsive Design ===== */
@media (max-width: 968px) {
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 40px;
    }

    .hero-content {
        order: 2;
    }

    .hero-image {
        order: 1;
    }

    .hero-description {
        margin-left: auto;
        margin-right: auto;
    }

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

    .project-card {
        grid-template-columns: 1fr;
    }

    .project-card.reverse {
        direction: ltr;
    }

    .project-images {
        height: 180px;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--bg-primary);
        flex-direction: column;
        align-items: center;
        padding: 30px 0;
        gap: 20px;
        border-bottom: 1px solid var(--border-color);
        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-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }

    .section-title {
        font-size: 2rem;
    }

    .project-card {
        padding: 24px;
    }

    .project-title {
        font-size: 1.5rem;
    }

    .project-images {
        height: 160px;
    }

    .contact-links {
        flex-direction: column;
        align-items: center;
    }

    .contact-item {
        width: 100%;
        max-width: 320px;
        justify-content: center;
    }

    .image-wrapper {
        width: 200px;
        height: 200px;
    }
}

/* Copy toast */
.copy-toast {
    position: fixed;
    background: rgba(99, 102, 241, 0.95);
    color: #fff;
    padding: 8px 16px;
    border-radius: 6px;
    font-size: 0.85rem;
    font-weight: 500;
    pointer-events: none;
    opacity: 0;
    transform: translateY(4px);
    transition: opacity 0.3s ease, transform 0.3s ease;
    z-index: 10000;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    white-space: nowrap;
}

.copy-toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

@media (max-width: 480px) {
    .hero {
        padding: 80px 16px 40px;
    }

    .container {
        padding: 0 16px;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: stretch;
    }

    .btn {
        justify-content: center;
    }

    .skill-tags {
        gap: 8px;
    }

    .skill-tag {
        font-size: 0.8rem;
        padding: 6px 12px;
    }
}