/* Modern Personal Homepage Styles */
:root {
    --primary: #10b981;
    --primary-hover: #059669;
    --bg-light: #f8fafc;
    --bg-white: #ffffff;
    --text-main: #0f172a;
    --text-muted: #64748b;
    --border-color: #e2e8f0;
    --card-shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    color: var(--text-main);
    line-height: 1.6;
    background-color: var(--bg-white);
    overflow-x: hidden;
}

.container {
    max-width: 1140px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Navbar */
.navbar {
    height: 80px;
    display: flex;
    align-items: center;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    background: transparent;
    transition: var(--transition);
}

.navbar.sticky {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    height: 64px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.logo {
    font-weight: 700;
    font-size: 1.25rem;
    text-decoration: none;
    color: var(--text-main);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-muted);
    font-weight: 500;
    font-size: 0.9rem;
    transition: var(--transition);
}

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

/* Hero Section */
.hero {
    padding: 160px 0 80px;
    min-height: 80vh;
    display: flex;
    align-items: center;
}

.hero-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 4rem;
}

.hero-content {
    flex: 1;
}

.hero-content h1 {
    font-size: 4rem;
    line-height: 1.1;
    margin-bottom: 0.5rem;
    letter-spacing: -0.02em;
}

.subtitle {
    font-size: 1.25rem;
    color: var(--primary);
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.intro-title {
    font-weight: 600;
    font-size: 1.1rem;
    color: var(--text-main);
    margin-bottom: 1.5rem;
}

.intro-description p {
    font-size: 1.125rem;
    color: var(--text-muted);
    max-width: 600px;
    margin-bottom: 1rem;
}

.hero-hobby {
    margin-bottom: 2rem;
}

.hero-actions {
    display: flex;
    gap: 1rem;
}

.hero-image {
    flex: 0 0 350px;
}

.profile-img {
    width: 350px;
    height: 350px;
    object-fit: cover;
    border-radius: 50%;
    border: 8px solid var(--bg-light);
    box-shadow: var(--card-shadow);
}

/* Buttons */
.btn-primary {
    background: var(--primary);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.btn-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
}

.btn-secondary {
    background: transparent;
    color: var(--text-main);
    border: 1px solid var(--border-color);
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
}

.btn-secondary:hover {
    background: var(--bg-light);
}

/* Sections */
.section {
    padding: 100px 0;
}

.bg-light {
    background-color: var(--bg-light);
}

.section-title {
    font-size: 2.25rem;
    margin-bottom: 3rem;
    text-align: center;
    letter-spacing: -0.02em;
}

/* Bento Principles */
.bento-grid-principles {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.bento-card-small {
    background: var(--bg-white);
    padding: 1.5rem;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    font-weight: 600;
    text-align: center;
    transition: var(--transition);
}

.bento-card-small:hover {
    border-color: var(--primary);
    transform: translateY(-5px);
    box-shadow: var(--card-shadow);
}

/* Highlights Grid */
.highlights-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.highlight-card {
    background: var(--bg-white);
    padding: 2rem;
    border-radius: 16px;
    border: 1px solid var(--border-color);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

.highlight-card:hover {
    border-color: var(--primary);
    box-shadow: var(--card-shadow);
}

.highlight-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.highlight-icon {
    font-size: 1.5rem;
    background: var(--bg-light);
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
}

.highlight-list {
    list-style: none;
    margin-top: auto;
}

.highlight-list li {
    position: relative;
    padding-left: 1.5rem;
    margin-bottom: 0.75rem;
    font-size: 0.95rem;
    color: var(--text-muted);
}

.highlight-list li::before {
    content: "•";
    position: absolute;
    left: 0;
    color: var(--primary);
    font-weight: bold;
}

/* Accordion */
.accordion {
    max-width: 800px;
    margin: 0 auto;
}

.accordion-item {
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    margin-bottom: 1rem;
    overflow: hidden;
}

.accordion-header {
    width: 100%;
    padding: 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: transparent;
    border: none;
    cursor: pointer;
    text-align: left;
    font-family: inherit;
}

.accordion-title h3 {
    font-size: 1.1rem;
    margin-bottom: 0.25rem;
}

.accordion-title p {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.accordion-icon {
    font-size: 1.5rem;
    color: var(--primary);
    transition: var(--transition);
}

.accordion-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
    padding: 0 1.5rem;
}

.exp-list {
    padding-bottom: 1.5rem;
    list-style-type: none;
}

.exp-list li {
    position: relative;
    padding-left: 1.25rem;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
    color: var(--text-muted);
}

.exp-list li::before {
    content: "→";
    position: absolute;
    left: 0;
    color: var(--primary);
}

/* Skills Grid */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 2rem;
}

.skill-group h3 {
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    margin-bottom: 1rem;
    border-bottom: 2px solid var(--bg-light);
    padding-bottom: 0.5rem;
}

.tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.tags span {
    background: var(--bg-light);
    padding: 0.25rem 0.75rem;
    border-radius: 100px;
    font-size: 0.8rem;
    font-weight: 500;
    border: 1px solid var(--border-color);
}

/* Footer Layout Side-by-side */
.footer-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

.edu-item {
    margin-bottom: 2rem;
}

.cert-list, .lang-list {
    list-style: none;
}

.cert-list li, .lang-list li {
    margin-bottom: 0.5rem;
    font-size: 0.95rem;
    color: var(--text-muted);
}

.text-left {
    text-align: left !important;
}

/* Footer */
.footer {
    padding: 40px 0;
    border-top: 1px solid var(--border-color);
    text-align: center;
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(15, 23, 42, 0.6);
    backdrop-filter: blur(4px);
}

.modal-content {
    background-color: var(--bg-white);
    margin: 10% auto;
    padding: 2.5rem;
    border-radius: 20px;
    width: 90%;
    max-width: 500px;
    position: relative;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    animation: slideIn 0.3s ease-out;
}

@keyframes slideIn {
    from { transform: translateY(-30px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

.close-btn {
    position: absolute;
    right: 1.5rem;
    top: 1.5rem;
    font-size: 1.5rem;
    border: none;
    background: none;
    cursor: pointer;
    color: var(--text-muted);
}

.form-group {
    margin-bottom: 1.25rem;
}

.form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
}

.form-group input, .form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-family: inherit;
    font-size: 0.9rem;
}

.form-group input:focus, .form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.1);
}

.btn-submit {
    width: 100%;
    background: var(--primary);
    color: white;
    border: none;
    padding: 0.85rem;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.btn-submit:hover {
    background: var(--primary-hover);
}

/* Responsive */
@media (max-width: 992px) {
    .hero-container {
        flex-direction: column-reverse;
        text-align: center;
    }
    .hero-content h1 { font-size: 3rem; }
    .hero-actions { justify-content: center; }
    .hero-image { flex-basis: auto; }
    .profile-img { width: 280px; height: 280px; }
}

@media (max-width: 768px) {
    .bento-grid-principles { grid-template-columns: 1fr; }
    .highlights-grid { grid-template-columns: 1fr; }
    .footer-layout { grid-template-columns: 1fr; gap: 2rem; }
    .nav-links { display: none; }
    .hero-content h1 { font-size: 2.5rem; }
}