/* ==========================================
   1. RESET & VARIABLES
   ========================================== */
@font-face {
    font-family: 'Poppins';
    font-display: swap;
}

:root {
    --primary-color: #3b82f6;      
    --primary-hover: #1d4ed8;
    --bg-color: #f8fafc;           
    --bg-secondary: #ffffff;
    --text-color: #0f172a;         
    --text-muted: #64748b;
    --card-bg: #ffffff;
    --border-color: #e2e8f0;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
    --font-main: 'Poppins', sans-serif;
    --transition: all 0.3s ease;
}

body.dark-mode {
    --bg-color: #0f172a;           
    --bg-secondary: #1e293b;
    --text-color: #f8fafc;
    --text-muted: #94a3b8;
    --card-bg: #1e293b;
    --border-color: #334155;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-main);
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    transition: var(--transition);
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

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

ul {
    list-style: none;
}

/* ==========================================
   2. NAVBAR & NAVIGATION
   ========================================== */
.navbar {
    position: sticky;
    top: 0;
    background-color: rgba(248, 250, 252, 0.85);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    padding: 15px 0;
    transition: var(--transition);
}

body.dark-mode .navbar {
    background-color: rgba(15, 23, 42, 0.85);
}

.navbar-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
}

.logo span {
    color: var(--primary-color);
}

.nav-links {
    display: flex;
    gap: 20px;
}

.nav-links a {
    font-weight: 600;
    color: var(--text-muted);
    transition: var(--transition);
}

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

.nav-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.btn-theme {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-color);
    display: flex;
    align-items: center;
    padding: 4px;
}

.hamburger {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-color);
    padding: 4px;
    display: none !important; /* Tersembunyi penuh di Desktop */
}

/* ==========================================
   3. HERO SECTION
   ========================================== */
.hero-section {
    padding: 100px 0 60px;
}

.hero-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
}

.hero-text {
    flex: 1;
}

.badge {
    background-color: rgba(59, 130, 246, 0.1);
    color: var(--primary-color);
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
}

.hero-text h1 {
    font-size: 2.8rem;
    margin: 10px 0 5px;
}

.hero-text h2 {
    font-size: 1.4rem;
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 15px;
}

.hero-text p {
    color: var(--text-muted);
    margin-bottom: 25px;
}

.hero-buttons {
    display: flex;
    gap: 15px;
}

.btn {
    padding: 10px 24px;
    border-radius: 8px;
    font-weight: 600;
    transition: var(--transition);
    display: inline-block;
}

.btn-primary {
    background-color: var(--primary-color);
    color: #fff;
}

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

.btn-secondary {
    border: 1px solid var(--border-color);
    color: var(--text-color);
}

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

.hero-image img {
    width: 320px;
    height: 320px;
    border-radius: 50%;
    object-fit: cover;
    border: 4px solid var(--primary-color);
}

/* ==========================================
   4. SECTIONS COMMON & SKILLS
   ========================================== */
section {
    padding: 80px 0;
}

.section-title {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 40px;
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 50px;
    height: 3px;
    background-color: var(--primary-color);
    margin: 8px auto 0;
    border-radius: 2px;
}

.skills-section, .about-section {
    background-color: var(--bg-secondary);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
}

.skill-card {
    background-color: var(--card-bg);
    padding: 30px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.skill-card:hover {
    transform: translateY(-5px);
}

.skill-card .material-symbols-outlined {
    font-size: 40px;
    color: var(--primary-color);
    margin-bottom: 10px;
}

/* ==========================================
   5. PROJECTS STYLING (WITH IMAGES)
   ========================================== */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 25px;
}

.project-card {
    background-color: var(--card-bg);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow);
    overflow: hidden;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

.project-card:hover {
    transform: translateY(-5px);
}

.project-image {
    width: 100%;
    height: 180px;
    overflow: hidden;
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
}

.project-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: top center;
    transition: transform 0.4s ease;
}

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

.project-info {
    padding: 20px;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.project-info h3 {
    margin-bottom: 8px;
    font-size: 1.15rem;
}

.project-info p {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 15px;
}

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

.tags span {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    padding: 3px 8px;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
}

.project-link {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    color: var(--primary-color);
    font-weight: 600;
    font-size: 0.9rem;
}

/* ==========================================
   6. CONTACT & FOOTER
   ========================================== */
.section-subtitle {
    text-align: center;
    color: var(--text-muted);
    margin-top: -30px;
    margin-bottom: 30px;
}

.contact-form {
    max-width: 600px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background-color: var(--card-bg);
    color: var(--text-color);
    font-family: inherit;
    outline: none;
    transition: var(--transition);
}

.contact-form input:focus,
.contact-form textarea:focus {
    border-color: var(--primary-color);
}

.footer {
    padding: 30px 0;
    border-top: 1px solid var(--border-color);
    text-align: center;
}

.footer-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 15px;
}

.social-links {
    display: flex;
    gap: 15px;
}

.social-links a {
    color: var(--text-muted);
    transition: var(--transition);
}

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

/* ==========================================
   7. RESPONSIVE MOBILE MENU & OPTIMIZATION
   ========================================== */
@media (max-width: 768px) {
    .navbar {
        backdrop-filter: none;
        background-color: var(--bg-color);
    }

    .hamburger {
        display: flex !important; /* Hanya aktif saat di HP */
        align-items: center;
    }

    .nav-menu {
        position: fixed;
        top: 60px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 60px);
        background-color: var(--bg-color);
        padding: 40px 20px;
        transition: left 0.3s ease-in-out;
        box-shadow: 0 10px 15px rgba(0, 0, 0, 0.1);
    }

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

    .nav-links {
        flex-direction: column;
        align-items: center;
        gap: 25px;
    }

    .nav-links a {
        font-size: 1.2rem;
    }

    .hero-content {
        flex-direction: column-reverse;
        text-align: center;
    }

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

    .hero-image img {
        width: 240px;
        height: 240px;
    }

    .footer-container {
        flex-direction: column;
    }
}