/* ===== CSS Variables ===== */
:root {
    --color-primary: #6366f1;
    --color-primary-dark: #4f46e5;
    --color-secondary: #f472b6;
    --color-dark: #0f172a;
    --color-dark-light: #1e293b;
    --color-gray: #64748b;
    --color-gray-light: #94a3b8;
    --color-light: #f8fafc;
    --color-white: #ffffff;

    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-display: 'Playfair Display', Georgia, serif;

    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 25px 50px -12px rgba(0, 0, 0, 0.25);

    --container-width: 1200px;
    --spacing-section: 120px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    font-size: 16px;
    line-height: 1.7;
    color: var(--color-dark);
    background-color: var(--color-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

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

/* ===== Typography ===== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
}

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

.section-subtitle {
    font-size: 1.125rem;
    color: var(--color-gray);
    margin-bottom: 60px;
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 28px;
    font-family: var(--font-primary);
    font-size: 0.9375rem;
    font-weight: 500;
    border-radius: 50px;
    border: none;
    cursor: pointer;
    transition: var(--transition);
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    color: var(--color-white);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(99, 102, 241, 0.4);
}

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

.btn-secondary:hover {
    background: var(--color-dark);
    color: var(--color-white);
}

.btn-large {
    padding: 18px 36px;
    font-size: 1.0625rem;
}

/* ===== Navigation ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.nav-container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
    height: 72px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

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

.nav-links {
    display: flex;
    align-items: center;
    gap: 40px;
}

.nav-links a {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--color-dark);
    transition: var(--transition);
    position: relative;
}

.nav-links a:not(.btn-contact)::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-primary);
    transition: var(--transition);
}

.nav-links a:not(.btn-contact):hover::after {
    width: 100%;
}

.nav-links .btn-contact {
    padding: 10px 24px;
    background: var(--color-dark);
    color: var(--color-white);
    border-radius: 50px;
}

.nav-links .btn-contact:hover {
    background: var(--color-primary);
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 6px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.mobile-menu-btn span {
    width: 24px;
    height: 2px;
    background: var(--color-dark);
    transition: var(--transition);
}

/* ===== Hero Section ===== */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 120px 24px 60px;
    background: linear-gradient(180deg, var(--color-light) 0%, var(--color-white) 100%);
    position: relative;
}

.hero-content {
    max-width: 800px;
}

.hero-greeting {
    font-size: 1.125rem;
    color: var(--color-gray);
    margin-bottom: 8px;
    letter-spacing: 2px;
    text-transform: uppercase;
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(3rem, 10vw, 5rem);
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: 12px;
    background: linear-gradient(135deg, var(--color-dark) 0%, var(--color-primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.5rem;
    font-weight: 500;
    color: var(--color-primary);
    margin-bottom: 24px;
}

.hero-description {
    font-size: 1.125rem;
    color: var(--color-gray);
    max-width: 600px;
    margin: 0 auto 40px;
}

.hero-cta {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.hero-scroll {
    position: absolute;
    bottom: 40px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    color: var(--color-gray-light);
    font-size: 0.875rem;
}

.scroll-indicator {
    width: 24px;
    height: 40px;
    border: 2px solid var(--color-gray-light);
    border-radius: 12px;
    position: relative;
}

.scroll-indicator::after {
    content: '';
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 8px;
    background: var(--color-primary);
    border-radius: 2px;
    animation: scroll 2s infinite;
}

@keyframes scroll {
    0%, 100% { top: 8px; opacity: 1; }
    50% { top: 20px; opacity: 0.5; }
}

/* ===== Work Section ===== */
.work-section {
    padding: var(--spacing-section) 0;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 32px;
}

.project-card {
    background: var(--color-white);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    cursor: pointer;
}

.project-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.project-image {
    position: relative;
    aspect-ratio: 16/10;
    overflow: hidden;
}

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

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

.project-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.9) 0%, rgba(244, 114, 182, 0.9) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition);
}

.project-card:hover .project-overlay {
    opacity: 1;
}

.view-project {
    color: var(--color-white);
    font-weight: 600;
    font-size: 1rem;
    padding: 12px 24px;
    border: 2px solid var(--color-white);
    border-radius: 50px;
    transition: var(--transition);
}

.project-card:hover .view-project {
    background: var(--color-white);
    color: var(--color-primary);
}

.project-info {
    padding: 24px;
}

.project-category {
    display: inline-block;
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--color-primary);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 8px;
}

.project-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--color-dark);
}

.project-excerpt {
    font-size: 0.9375rem;
    color: var(--color-gray);
    line-height: 1.6;
}

/* ===== About Section ===== */
.about-section {
    padding: var(--spacing-section) 0;
    background: var(--color-light);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.about-text p {
    color: var(--color-gray);
    margin-bottom: 20px;
}

.about-intro {
    font-size: 1.25rem;
    color: var(--color-dark) !important;
    font-weight: 500;
}

.skills {
    margin-top: 40px;
}

.skills h3 {
    font-size: 1.125rem;
    margin-bottom: 16px;
    color: var(--color-dark);
}

.skills-list {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.skills-list li {
    padding: 8px 20px;
    background: var(--color-white);
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-dark);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.about-image {
    position: relative;
}

.image-frame {
    aspect-ratio: 4/5;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    border-radius: 24px;
    position: relative;
    overflow: hidden;
    padding: 8px;
}

.image-frame img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 18px;
}

/* ===== Contact Section ===== */
.contact-section {
    padding: var(--spacing-section) 0;
    text-align: center;
}

.contact-content {
    max-width: 600px;
    margin: 0 auto;
}

.contact-text {
    font-size: 1.125rem;
    color: var(--color-gray);
    margin-bottom: 40px;
}

.contact-phone {
    margin-top: 20px;
    font-size: 1rem;
    color: var(--color-gray);
}

/* ===== Footer ===== */
.footer {
    padding: 40px 0;
    background: var(--color-dark);
    text-align: center;
}

.footer p {
    color: var(--color-gray-light);
    font-size: 0.875rem;
}

/* ===== Modal ===== */
.modal {
    position: fixed;
    inset: 0;
    z-index: 2000;
    background: rgba(15, 23, 42, 0.9);
    backdrop-filter: blur(10px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

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

.modal-content {
    background: var(--color-white);
    border-radius: 24px;
    max-width: 1000px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    transform: translateY(20px);
    transition: var(--transition);
}

.modal.active .modal-content {
    transform: translateY(0);
}

.modal-close {
    position: absolute;
    top: 20px;
    right: 20px;
    width: 44px;
    height: 44px;
    background: var(--color-light);
    border: none;
    border-radius: 50%;
    font-size: 1.5rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    z-index: 10;
}

.modal-close:hover {
    background: var(--color-dark);
    color: var(--color-white);
}

.modal-header {
    padding: 40px 40px 20px;
}

.modal-category {
    display: inline-block;
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--color-primary);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 8px;
}

.modal-title {
    font-family: var(--font-display);
    font-size: clamp(1.5rem, 4vw, 2.5rem);
    color: var(--color-dark);
}

.modal-body {
    padding: 0 40px 40px;
}

.modal-description {
    font-size: 1rem;
    color: var(--color-gray);
    line-height: 1.8;
    margin-bottom: 32px;
    white-space: pre-line;
}

.modal-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 16px;
}

.modal-gallery img {
    width: 100%;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    :root {
        --spacing-section: 80px;
    }

    .about-content {
        gap: 48px;
    }
}

@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background: var(--color-white);
        flex-direction: column;
        padding: 32px 24px;
        gap: 24px;
        border-bottom: 1px solid rgba(0, 0, 0, 0.1);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition);
    }

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

    .mobile-menu-btn {
        display: flex;
    }

    .mobile-menu-btn.active span:nth-child(1) {
        transform: rotate(45deg) translate(6px, 6px);
    }

    .mobile-menu-btn.active span:nth-child(2) {
        opacity: 0;
    }

    .mobile-menu-btn.active span:nth-child(3) {
        transform: rotate(-45deg) translate(6px, -6px);
    }

    .hero {
        padding: 100px 24px 60px;
    }

    .hero-scroll {
        display: none;
    }

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

    .about-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .about-image {
        order: -1;
        max-width: 300px;
        margin: 0 auto;
    }

    .modal-header,
    .modal-body {
        padding-left: 24px;
        padding-right: 24px;
    }
}

@media (max-width: 480px) {
    .hero-cta {
        flex-direction: column;
        align-items: center;
    }

    .btn {
        width: 100%;
        justify-content: center;
    }

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

    .project-card {
        border-radius: 12px;
    }
}

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

.project-card {
    animation: fadeInUp 0.6s ease forwards;
    opacity: 0;
}

.project-card:nth-child(1) { animation-delay: 0.1s; }
.project-card:nth-child(2) { animation-delay: 0.2s; }
.project-card:nth-child(3) { animation-delay: 0.3s; }
.project-card:nth-child(4) { animation-delay: 0.4s; }
.project-card:nth-child(5) { animation-delay: 0.5s; }
.project-card:nth-child(6) { animation-delay: 0.6s; }
.project-card:nth-child(7) { animation-delay: 0.7s; }