/* css/styles.css */
:root {
    /* Colors - Gradient Green/Teal Theme */
    --color-bg: #FAFAFA;
    --color-bg-light: #F2F2F2;
    --color-bg-dark: #121212;
    --color-text-main: #212529;
    --color-text-muted: #6C757D;
    --color-text-light: #F8F9FA;
    --color-accent: #20C997; /* Mint Green */
    --color-accent-end: #3498db; /* Soft Blue */
    --color-accent-gradient: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-end) 100%);
    --color-accent-gradient-hover: linear-gradient(135deg, #1AA179 0%, #2980b9 100%);
    --color-accent-rgb: 32, 201, 151;
    
    /* Typography */
    --font-main: 'Inter', sans-serif;
    
    /* Spacing & Sizes */
    --spacing-sm: 0.5rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 3rem;
    --spacing-xl: 6rem;
    --border-radius: 12px;
    --border-radius-lg: 24px;
    
    /* Shadows */
    --shadow-sm: 0 4px 6px rgba(0,0,0,0.05);
    --shadow-md: 0 10px 30px rgba(0,0,0,0.08);
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-smooth: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    
    /* Theme specific variables */
    --color-nav-bg: rgba(250, 250, 250, 0.8);
    --color-nav-border: rgba(0, 0, 0, 0.05);
    --color-card-bg: #ffffff;
}

[data-theme="dark"] {
    --color-bg: #121212;
    --color-bg-light: #1E1E1E;
    --color-bg-dark: #0A0A0A;
    --color-text-main: #F8F9FA;
    --color-text-muted: #ADB5BD;
    --color-text-light: #F8F9FA;
    --color-accent: #20C997;
    --color-accent-end: #5DADE2; /* Lighter blue for dark mode */
    --color-accent-gradient: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-end) 100%);
    --color-accent-gradient-hover: linear-gradient(135deg, #1AA179 0%, #3498db 100%);
    --color-accent-rgb: 32, 201, 151;
    --color-nav-bg: rgba(18, 18, 18, 0.8);
    --color-nav-border: rgba(255, 255, 255, 0.05);
    --color-card-bg: #1e1e1e;
    --shadow-sm: 0 4px 6px rgba(0,0,0,0.3);
    --shadow-md: 0 10px 30px rgba(0,0,0,0.5);
}

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

html {
    scroll-behavior: smooth;
}

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

/* Typography */
h1, h2, h3, h4 {
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-text-main);
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4.5rem);
    letter-spacing: -0.02em;
    margin-bottom: var(--spacing-md);
}

h1 span {
    background: var(--color-accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    color: transparent;
}

h2.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: var(--spacing-lg);
    letter-spacing: -0.01em;
}

p {
    color: var(--color-text-muted);
    font-size: 1.125rem;
    margin-bottom: var(--spacing-md);
}

a {
    text-decoration: none;
    color: inherit;
    transition: color var(--transition-fast);
}

/* Utility Classes */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.section {
    padding: var(--spacing-xl) 0;
}

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

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

.bg-dark h2, .bg-dark p {
    color: var(--color-text-light);
}

.bg-dark p {
    opacity: 0.8;
}

/* Buttons */
.btn-primary, .btn-secondary, .btn-outline {
    display: inline-block;
    padding: 0.875rem 2rem;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1rem;
    transition: all var(--transition-fast);
    cursor: pointer;
}

.btn-primary {
    background: var(--color-accent-gradient);
    color: #fff;
    box-shadow: 0 4px 15px rgba(var(--color-accent-rgb), 0.3);
}

.btn-primary:hover {
    background: var(--color-accent-gradient-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(var(--color-accent-rgb), 0.4);
}

.btn-secondary {
    background-color: transparent;
    color: var(--color-text-main);
}

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

.btn-outline {
    border: 1px solid var(--color-text-main);
    padding: 0.5rem 1.5rem;
}

.btn-outline:hover {
    background-color: var(--color-text-main);
    color: var(--color-bg);
}

.btn-text {
    font-weight: 600;
    color: var(--color-text-main);
    display: inline-flex;
    align-items: center;
}

.btn-text:hover {
    color: var(--color-accent);
    gap: 5px; /* Adds a little push effect for the arrow */
}

/* Navigation */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 5%;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background-color: var(--color-nav-bg);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-nav-border);
    transition: transform var(--transition-fast), background-color var(--transition-smooth), border-color var(--transition-smooth);
}

.navbar.hidden {
    transform: translateY(-100%);
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -1px;
}

.nav-links {
    display: flex;
    list-style: none;
    align-items: center;
    gap: 2.5rem;
}

.nav-links a:not(.btn-outline) {
    font-weight: 500;
    font-size: 0.95rem;
}

.nav-links a:not(.btn-outline):hover {
    color: var(--color-accent);
}

/* Theme Toggle Button */
.theme-toggle {
    background: none;
    border: none;
    color: var(--color-text-main);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color var(--transition-fast);
    padding: 0.25rem;
}

.theme-toggle:hover {
    color: var(--color-accent);
}

[data-theme="dark"] .moon-icon { display: none; }
[data-theme="dark"] .sun-icon { display: block !important; }

/* Hamburger Menu */
.hamburger {
    display: none;
    cursor: pointer;
    flex-direction: column;
    gap: 5px;
}

.hamburger .bar {
    width: 25px;
    height: 3px;
    background-color: var(--color-text-main);
    transition: all 0.3s ease-in-out;
    border-radius: 3px;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding-top: 80px; /* offset for navbar */
}

.hero-content {
    max-width: 800px;
    padding: 0 var(--spacing-md);
}

.cta-group {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-top: var(--spacing-md);
}

/* Stats Section */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    text-align: center;
}

.stat-item {
    padding: var(--spacing-md);
}

.stat-number {
    font-size: 3.5rem;
    color: var(--color-accent);
    margin-bottom: 0.5rem;
    line-height: 1;
}

.stat-item p {
    font-size: 1.125rem;
    font-weight: 500;
    margin: 0;
}

/* About Section */
.about-content {
    max-width: 800px;
    font-size: 1.25rem;
}

/* Services Section */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.service-card {
    background-color: var(--color-card-bg);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-smooth), box-shadow var(--transition-smooth), background-color var(--transition-smooth);
    text-align: center;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-md);
}

.service-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--spacing-md);
    background-color: rgba(var(--color-accent-rgb), 0.1);
    color: var(--color-accent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color var(--transition-fast), color var(--transition-fast);
}

.service-card:hover .service-icon {
    background-color: var(--color-accent);
    color: #fff;
}

.service-card h3 {
    margin-bottom: var(--spacing-sm);
    font-size: 1.5rem;
}

/* Skills Section */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
}

.skill-category {
    background-color: var(--color-card-bg);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-smooth), background-color var(--transition-smooth);
}

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

.skill-category h3 {
    margin-bottom: var(--spacing-sm);
    color: var(--color-accent);
}

.skill-list {
    list-style: none;
}

.skill-list li {
    margin-bottom: 0.5rem;
    position: relative;
    padding-left: 1.5rem;
}

.skill-list li::before {
    content: "▹";
    position: absolute;
    left: 0;
    color: var(--color-accent);
}

/* Timeline / Experience Section */
.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    top: 0;
    left: 20px;
    height: 100%;
    width: 2px;
    background-color: rgba(var(--color-accent-rgb), 0.3); /* Accent color semi-transparent */
}

.timeline-item {
    position: relative;
    padding-left: 60px;
    margin-bottom: var(--spacing-lg);
}

.timeline-item:last-child {
    margin-bottom: 0;
}

.timeline-dot {
    position: absolute;
    left: 14px;
    top: 5px;
    width: 14px;
    height: 14px;
    background: var(--color-accent-gradient);
    border-radius: 50%;
    box-shadow: 0 0 0 4px var(--color-bg-light); /* Matches .bg-light section background */
    transition: background-color var(--transition-smooth), box-shadow var(--transition-smooth);
}

.timeline-content {
    background-color: var(--color-card-bg);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    transition: background-color var(--transition-smooth);
}

.timeline-content h3 {
    margin-bottom: 0.25rem;
}

.timeline-company {
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--color-accent);
    margin-bottom: var(--spacing-sm);
}


/* Portfolio Section */
.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-lg);
}

.portfolio-card {
    background-color: var(--color-card-bg);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-smooth), box-shadow var(--transition-smooth), background-color var(--transition-smooth);
}

.portfolio-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-md);
}

.card-image {
    width: 100%;
    aspect-ratio: 4/3;
    overflow: hidden;
}

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

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

.card-content {
    padding: var(--spacing-md) var(--spacing-md) var(--spacing-lg);
}

.card-content h3 {
    margin-bottom: var(--spacing-sm);
    font-size: 1.5rem;
}

.card-content p {
    font-size: 1rem;
    margin-bottom: var(--spacing-md);
}

/* Testimonials Section */
.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-lg);
}

.testimonial-card {
    background-color: var(--color-card-bg);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    transition: background-color var(--transition-smooth);
    position: relative;
}

.testimonial-card::before {
    content: '"';
    position: absolute;
    top: 20px;
    right: 30px;
    font-size: 5rem;
    line-height: 1;
    color: rgba(var(--color-accent-rgb), 0.1);
    font-family: serif;
}

.testimonial-text {
    font-size: 1.125rem;
    font-style: italic;
    margin-bottom: var(--spacing-md);
    position: relative;
    z-index: 1;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.author-avatar {
    width: 50px;
    height: 50px;
    background: var(--color-accent-gradient);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.25rem;
}

.author-info h4 {
    margin-bottom: 0.1rem;
    font-size: 1rem;
}

.author-info p {
    font-size: 0.875rem;
    margin: 0;
}

/* Contact Section */
.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
}

.contact-info p {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-md);
}

.contact-details {
    margin-top: var(--spacing-lg);
}

.contact-item {
    margin-bottom: var(--spacing-md);
}

.contact-item h4 {
    margin-bottom: 0.5rem;
    color: var(--color-accent);
}

.contact-item a, .contact-item p {
    font-size: 1.125rem;
    font-weight: 500;
}

.contact-form {
    background-color: var(--color-card-bg);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    transition: background-color var(--transition-smooth);
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--color-text-main);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    border: 1px solid rgba(0,0,0,0.1);
    border-radius: var(--border-radius);
    background-color: var(--color-bg);
    color: var(--color-text-main);
    font-family: var(--font-main);
    font-size: 1rem;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast), background-color var(--transition-smooth);
}

[data-theme="dark"] .form-group input,
[data-theme="dark"] .form-group textarea {
    border: 1px solid rgba(255,255,255,0.1);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(var(--color-accent-rgb), 0.2);
}

.contact-form button {
    width: 100%;
    border: none;
}

/* Footer */
.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.footer-text h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: var(--spacing-sm);
}

.email-link {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-accent);
    display: inline-block;
    margin-top: var(--spacing-md);
    position: relative;
}

.email-link::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 2px;
    bottom: -4px;
    left: 0;
    background-color: var(--color-accent);
    transform: scaleX(0);
    transform-origin: bottom right;
    transition: transform var(--transition-fast);
}

.email-link:hover::after {
    transform: scaleX(1);
    transform-origin: bottom left;
}

.footer-social {
    display: flex;
    gap: 1.5rem;
}

.footer-social a {
    font-weight: 500;
    opacity: 0.8;
}

.footer-social a:hover {
    opacity: 1;
    color: var(--color-accent);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-md);
    color: rgba(255,255,255,0.5);
    font-size: 0.875rem;
}

/* Animations */
.fade-in {
    opacity: 0;
    animation: fadeIn 1s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.fade-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.fade-up.visible {
    opacity: 1;
    transform: translateY(0);
}

.delay-1 { animation-delay: 0.2s; transition-delay: 0.2s; }
.delay-2 { animation-delay: 0.4s; transition-delay: 0.4s; }

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* Responsive */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
        z-index: 1001;
    }

    .hamburger.active .bar:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }
    
    .hamburger.active .bar:nth-child(2) {
        opacity: 0;
    }
    
    .hamburger.active .bar:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }

    .nav-links {
        position: fixed;
        left: -100%;
        top: 0;
        gap: 0;
        flex-direction: column;
        background-color: var(--color-bg);
        width: 100%;
        height: 100vh;
        text-align: center;
        transition: 0.3s;
        justify-content: center;
        align-items: center;
        padding: 0;
        z-index: 1000;
    }

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

    .nav-links li {
        margin: 1.5rem 0;
    }
    
    .cta-group {
        flex-direction: column;
    }
    
    .btn-primary, .btn-secondary {
        width: 100%;
    }

    .contact-wrapper {
        grid-template-columns: 1fr;
    }

    .footer-content {
        flex-direction: column;
        align-items: flex-start;
    }
}

/* Cursor Glow Interactive Effect */
.cursor-glow {
    position: fixed;
    top: 0;
    left: 0;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(var(--color-accent-rgb), 0.12) 0%, rgba(var(--color-accent-rgb), 0) 70%);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    pointer-events: none;
    z-index: 999; /* Berada di atas konten biasa tapi di bawah navbar (1000) */
    opacity: 0;
    transition: opacity 0.5s ease;
    will-change: transform;
}