/* ===========================
   Apple-Inspired Clean Design
   =========================== */

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

:root {
    --primary-color: #000000;
    --secondary-color: #1d1d1f;
    --accent-color: #0071e3;
    --text-primary: #1d1d1f;
    --text-secondary: #86868b;
    --bg-primary: #ffffff;
    --bg-secondary: #f5f5f7;
    --border-color: #d2d2d7;
    --hover-bg: #f5f5f7;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica', 'Arial', sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: 980px;
    margin: 0 auto;
    padding: 0 22px;
}

/* ===========================
   Navigation
   =========================== */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background-color: rgba(255, 255, 255, 0.8);
    backdrop-filter: saturate(180%) blur(20px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    z-index: 1000;
    transition: all 0.3s ease;
}

.nav-container {
    max-width: 980px;
    margin: 0 auto;
    padding: 0 22px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    font-size: 17px;
    font-weight: 600;
    color: var(--text-primary);
    text-decoration: none;
    transition: opacity 0.3s ease;
}

.nav-logo:hover {
    opacity: 0.6;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-link {
    font-size: 14px;
    color: var(--text-primary);
    text-decoration: none;
    transition: opacity 0.3s ease;
}

.nav-link:hover {
    opacity: 0.6;
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 6px;
    cursor: pointer;
}

.hamburger span {
    width: 18px;
    height: 1px;
    background: var(--text-primary);
    transition: all 0.3s ease;
}

/* ===========================
   Hero Section
   =========================== */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 80px 22px 40px;
    position: relative;
}

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

.hero-title {
    font-size: 56px;
    font-weight: 600;
    letter-spacing: -0.005em;
    margin-bottom: 8px;
    line-height: 1.07;
}

.hero-subtitle {
    font-size: 24px;
    font-weight: 400;
    color: var(--text-secondary);
    margin-bottom: 30px;
    letter-spacing: 0.004em;
}

.hero-links {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 30px;
}

.hero-links a {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-primary);
    font-size: 20px;
    border-radius: 50%;
    background-color: var(--bg-secondary);
    text-decoration: none;
    transition: all 0.3s ease;
}

.hero-links a:hover {
    background-color: var(--text-primary);
    color: var(--bg-primary);
    transform: translateY(-2px);
}

.resume-link {
    display: inline-block;
    padding: 12px 24px;
    background-color: var(--accent-color);
    color: #fff;
    text-decoration: none;
    border-radius: 980px;
    font-size: 14px;
    font-weight: 400;
    transition: all 0.3s ease;
}

.resume-link:hover {
    background-color: #0077ED;
    transform: scale(1.02);
}

.scroll-down {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    font-size: 20px;
    text-decoration: none;
    transition: all 0.3s ease;
    animation: bounce 2s infinite;
}

.scroll-down:hover {
    color: var(--text-primary);
}

@keyframes bounce {
    0%, 100% {
        transform: translateX(-50%) translateY(0);
    }
    50% {
        transform: translateX(-50%) translateY(-10px);
    }
}

/* ===========================
   Sections
   =========================== */
.section {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 100px 22px 80px;
    position: relative;
}

.section-alt {
    background-color: var(--bg-secondary);
}

.section-title {
    font-size: 40px;
    font-weight: 600;
    letter-spacing: -0.005em;
    text-align: center;
    margin-bottom: 50px;
}

/* ===========================
   About Section
   =========================== */
.about-content {
    max-width: 700px;
    text-align: center;
}

.about-text {
    font-size: 19px;
    line-height: 1.58;
    color: var(--text-secondary);
    margin-bottom: 20px;
}

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

/* ===========================
   Skills Section
   =========================== */
.skills-list {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px;
    margin-bottom: 60px;
    max-width: 800px;
}

.skill-tag {
    padding: 8px 16px;
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 980px;
    font-size: 14px;
    color: var(--text-primary);
    transition: all 0.3s ease;
}

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

.skills-experience {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    max-width: 900px;
    width: 100%;
}

.experience-item {
    text-align: center;
    padding: 30px 20px;
    background-color: var(--bg-primary);
    border-radius: 18px;
    transition: all 0.3s ease;
}

.experience-item:hover {
    transform: translateY(-4px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

.experience-item h3 {
    font-size: 17px;
    font-weight: 600;
    margin-bottom: 8px;
}

.experience-item p {
    font-size: 14px;
    color: var(--text-secondary);
}

/* ===========================
   Projects Section
   =========================== */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    max-width: 980px;
    width: 100%;
}

.project-card {
    background-color: var(--bg-secondary);
    border-radius: 18px;
    padding: 30px;
    transition: all 0.3s ease;
    border: 1px solid transparent;
}

.project-card:hover {
    background-color: var(--bg-primary);
    transform: translateY(-4px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    border-color: var(--border-color);
}

.project-header {
    margin-bottom: 16px;
}

.project-tech {
    font-size: 12px;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 8px;
}

.project-title {
    font-size: 21px;
    font-weight: 600;
    letter-spacing: -0.005em;
    margin-bottom: 12px;
}

.project-description {
    font-size: 14px;
    line-height: 1.6;
    color: var(--text-secondary);
    margin-bottom: 20px;
}

.project-more-btn {
    background: none;
    border: none;
    color: var(--accent-color);
    font-size: 14px;
    font-weight: 400;
    cursor: pointer;
    padding: 0;
    transition: opacity 0.3s ease;
}

.project-more-btn:hover {
    opacity: 0.6;
}

/* ===========================
   Blog Section
   =========================== */
.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    max-width: 980px;
    width: 100%;
}

.blog-card {
    background-color: var(--bg-primary);
    border-radius: 18px;
    padding: 30px;
    transition: all 0.3s ease;
    border: 1px solid transparent;
}

.blog-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    border-color: var(--border-color);
}

.blog-header {
    margin-bottom: 16px;
}

.blog-category {
    font-size: 12px;
    color: var(--accent-color);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 8px;
    font-weight: 500;
}

.blog-title {
    font-size: 21px;
    font-weight: 600;
    letter-spacing: -0.005em;
    margin-bottom: 12px;
}

.blog-excerpt {
    font-size: 14px;
    line-height: 1.6;
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.blog-meta {
    display: flex;
    gap: 20px;
    font-size: 12px;
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.blog-meta i {
    margin-right: 6px;
}

.blog-more-btn {
    background: none;
    border: none;
    color: var(--accent-color);
    font-size: 14px;
    font-weight: 400;
    cursor: pointer;
    padding: 0;
    transition: opacity 0.3s ease;
}

.blog-more-btn:hover {
    opacity: 0.6;
}

/* ===========================
   Contact Section
   =========================== */
.contact-intro {
    font-size: 19px;
    line-height: 1.58;
    color: var(--text-secondary);
    text-align: center;
    margin-bottom: 50px;
    max-width: 600px;
}

.contact-subtitle {
    font-size: 28px;
    font-weight: 600;
    text-align: center;
    margin-bottom: 30px;
}

.contact-form {
    max-width: 600px;
    width: 100%;
    margin: 0 auto 40px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-bottom: 12px;
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 14px 16px;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    font-size: 14px;
    font-family: inherit;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    transition: all 0.3s ease;
}

.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 4px rgba(0, 113, 227, 0.1);
}

.contact-form textarea {
    resize: vertical;
    margin-bottom: 20px;
}

.submit-btn {
    width: 100%;
    padding: 14px 24px;
    background-color: var(--accent-color);
    color: #fff;
    border: none;
    border-radius: 12px;
    font-size: 14px;
    font-weight: 400;
    cursor: pointer;
    transition: all 0.3s ease;
}

.submit-btn:hover {
    background-color: #0077ED;
    transform: scale(1.01);
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-top: 40px;
}

.footer-links a {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-primary);
    font-size: 20px;
    border-radius: 50%;
    background-color: var(--bg-primary);
    text-decoration: none;
    transition: all 0.3s ease;
}

.footer-links a:hover {
    background-color: var(--text-primary);
    color: var(--bg-primary);
    transform: translateY(-2px);
}

/* ===========================
   Modal
   =========================== */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(10px);
    z-index: 2000;
    overflow-y: auto;
}

.modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 22px;
}

.modal-content {
    background-color: var(--bg-primary);
    border-radius: 18px;
    padding: 40px;
    max-width: 700px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
}

.modal-close {
    position: absolute;
    top: 20px;
    right: 20px;
    width: 36px;
    height: 36px;
    border: none;
    background: none;
    font-size: 28px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: color 0.3s ease;
}

.modal-close:hover {
    color: var(--text-primary);
}

.modal-body {
    margin-bottom: 30px;
}

.modal-body h3 {
    font-size: 28px;
    font-weight: 600;
    margin-bottom: 20px;
}

.modal-body h4 {
    font-size: 21px;
    font-weight: 600;
    margin-top: 24px;
    margin-bottom: 12px;
}

.modal-body p {
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.modal-body ul,
.modal-body ol {
    margin-left: 20px;
    margin-bottom: 16px;
}

.modal-body li {
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.modal-body strong {
    color: var(--text-primary);
    font-weight: 600;
}

.modal-back {
    padding: 12px 24px;
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    border: none;
    border-radius: 12px;
    font-size: 14px;
    font-weight: 400;
    cursor: pointer;
    transition: all 0.3s ease;
}

.modal-back:hover {
    background-color: var(--text-primary);
    color: var(--bg-primary);
}

/* ===========================
   Footer
   =========================== */
.footer {
    background-color: var(--bg-secondary);
    padding: 20px;
    text-align: center;
    font-size: 12px;
    color: var(--text-secondary);
}

/* ===========================
   Responsive Design
   =========================== */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: 44px;
        left: -100%;
        width: 100%;
        flex-direction: column;
        background-color: rgba(255, 255, 255, 0.95);
        backdrop-filter: saturate(180%) blur(20px);
        padding: 22px;
        gap: 20px;
        transition: left 0.3s ease;
        border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    }

    .nav-menu.active {
        left: 0;
    }

    .hero-title {
        font-size: 40px;
    }

    .hero-subtitle {
        font-size: 20px;
    }

    .section-title {
        font-size: 32px;
    }

    .about-text {
        font-size: 17px;
    }

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

    .form-row {
        grid-template-columns: 1fr;
    }

    .skills-experience {
        grid-template-columns: 1fr;
    }

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

@media (max-width: 480px) {
    .hero-title {
        font-size: 32px;
    }

    .hero-subtitle {
        font-size: 18px;
    }

    .section-title {
        font-size: 28px;
    }

    .modal-content {
        padding: 30px 20px;
    }
}