/* Kontraktor Demo Colors & Variables */
:root {
    --kon-primary: #B45309; /* Amber 700 - Gold/Wood feel */
    --kon-primary-light: #FDE68A; /* Amber 200 */
    --kon-dark: #0F172A; /* Slate 900 - Charcoal */
    --kon-dark-2: #1E293B; /* Slate 800 */
    --kon-text: #334155; /* Slate 700 */
    --kon-text-light: #64748B; /* Slate 500 */
    --kon-bg: #F8FAFC; /* Slate 50 */
    --kon-white: #FFFFFF;
    
    --font-sans: 'Inter', sans-serif;
    --font-heading: 'Playfair Display', serif;
}

/* Global Reset */
* { margin: 0; padding: 0; box-sizing: border-box; }
body {
    font-family: var(--font-sans);
    color: var(--kon-text);
    background-color: var(--kon-bg);
    line-height: 1.6;
}

.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; }

/* Buttons */
.btn {
    display: inline-block;
    padding: 16px 32px;
    border-radius: 4px; /* Sharper edges for architecture feel */
    font-weight: 600;
    transition: all 0.3s ease;
    cursor: pointer;
    text-align: center;
    letter-spacing: 0.5px;
}
.btn-primary {
    background-color: var(--kon-primary);
    color: var(--kon-white);
}
.btn-primary:hover {
    background-color: #92400E;
    box-shadow: 0 8px 20px rgba(180, 83, 9, 0.3);
}
.btn-outline {
    background-color: transparent;
    color: var(--kon-white);
    border: 2px solid var(--kon-white);
}
.btn-outline:hover {
    background-color: var(--kon-white);
    color: var(--kon-dark);
}

/* Return Banner */
.return-banner {
    background: var(--kon-dark);
    color: white;
    text-align: center;
    padding: 12px;
    font-size: 14px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}
.return-banner a { color: var(--kon-primary-light); text-decoration: underline; font-weight: 600; }

/* Header */
header {
    padding: 20px 0;
    position: sticky;
    top: 0;
    width: 100%;
    z-index: 100;
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255,255,255,0.1);
}
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.logo {
    font-family: var(--font-heading);
    font-size: 26px;
    font-weight: 700;
    color: var(--kon-white);
    display: flex;
    align-items: center;
    gap: 12px;
    letter-spacing: 1px;
}
.nav-links {
    display: flex;
    gap: 32px;
    align-items: center;
}
.nav-links a {
    color: var(--kon-white);
    font-weight: 500;
    text-transform: uppercase;
    font-size: 14px;
    letter-spacing: 1px;
}
.nav-links a:hover {
    color: var(--kon-primary-light);
}

/* Hamburger */
.hamburger {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--kon-white);
}
.hamburger svg { width: 32px; height: 32px; }

/* Hero Section */
.hero {
    height: 100vh;
    min-height: 700px;
    background-image: linear-gradient(rgba(15, 23, 42, 0.7), rgba(15, 23, 42, 0.8)), url('../images/kontraktor/hero.png');
    background-size: cover;
    background-position: center;
    display: flex;
    align-items: center;
    position: relative;
}
.hero-content {
    max-width: 800px;
    color: var(--kon-white);
}
.hero-badge {
    text-transform: uppercase;
    letter-spacing: 3px;
    font-size: 14px;
    color: var(--kon-primary-light);
    margin-bottom: 24px;
    display: block;
}
.hero h1 {
    font-family: var(--font-heading);
    font-size: 64px;
    line-height: 1.1;
    margin-bottom: 32px;
}
.hero p {
    font-size: 20px;
    color: #CBD5E1;
    margin-bottom: 48px;
    max-width: 600px;
}

/* Layanan */
.services {
    padding: 120px 0;
    background: var(--kon-white);
}
.section-header {
    text-align: center;
    margin-bottom: 64px;
}
.section-header h2 {
    font-family: var(--font-heading);
    font-size: 42px;
    color: var(--kon-dark);
    margin-bottom: 16px;
}
.section-header p {
    color: var(--kon-text-light);
    max-width: 600px;
    margin: 0 auto;
    font-size: 18px;
}
.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}
.service-card {
    background: var(--kon-bg);
    padding: 48px 32px;
    border-top: 4px solid var(--kon-primary);
    transition: transform 0.3s ease;
}
.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.05);
}
.service-icon {
    margin-bottom: 24px;
    color: var(--kon-primary);
}
.service-card h3 {
    font-family: var(--font-heading);
    font-size: 24px;
    color: var(--kon-dark);
    margin-bottom: 16px;
}

/* Portfolio */
.portfolio {
    padding: 120px 0;
    background: var(--kon-dark);
    color: var(--kon-white);
}
.portfolio .section-header h2 { color: var(--kon-white); }
.portfolio .section-header p { color: #94A3B8; }
.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}
.portfolio-item {
    position: relative;
    overflow: hidden;
    group: hover;
}
.portfolio-item img {
    width: 100%;
    height: 400px;
    object-fit: cover;
    transition: transform 0.5s ease;
}
.portfolio-item:hover img {
    transform: scale(1.05);
}
.portfolio-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 32px;
    background: linear-gradient(transparent, rgba(15, 23, 42, 0.9));
}
.portfolio-overlay h3 {
    font-family: var(--font-heading);
    font-size: 24px;
    margin-bottom: 8px;
}
.portfolio-overlay span {
    color: var(--kon-primary-light);
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Tentang Kami */
.tentang { padding: 120px 0; background: var(--kon-bg); }
.tentang-content { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.tentang-text h2 { font-family: var(--font-heading); font-size: 42px; color: var(--kon-dark); margin-bottom: 24px; }
.tentang-text p { font-size: 18px; margin-bottom: 24px; color: var(--kon-text-light); }
.stats { display: flex; gap: 40px; margin-top: 40px; border-top: 1px solid #E2E8F0; padding-top: 40px; }
.stat-item h4 { font-family: var(--font-heading); font-size: 48px; color: var(--kon-primary); line-height: 1; }
.stat-item span { text-transform: uppercase; font-size: 13px; font-weight: 600; color: var(--kon-text-light); letter-spacing: 1px; }

/* Proses Kerja */
.proses { padding: 120px 0; background: var(--kon-white); }
.proses-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; }
.proses-step { position: relative; padding: 32px; background: var(--kon-bg); border-radius: 8px; }
.step-number { font-family: var(--font-heading); font-size: 64px; color: var(--kon-primary-light); opacity: 0.5; position: absolute; top: 16px; right: 24px; line-height: 1; z-index: 0; }
.proses-step h3 { font-size: 20px; color: var(--kon-dark); margin-bottom: 12px; position: relative; z-index: 1; }
.proses-step p { color: var(--kon-text-light); position: relative; z-index: 1; }

/* Testimoni */
.testimoni { padding: 120px 0; background: var(--kon-bg); }
.testimoni-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
.testimoni-card { background: var(--kon-white); padding: 40px; border: 1px solid #E2E8F0; border-top: 4px solid var(--kon-primary); }
.testimoni-card p { font-style: italic; color: var(--kon-text); margin-bottom: 24px; font-size: 18px; flex-grow: 1; }
.testimoni-rating { color: #F59E0B; font-size: 20px; margin-bottom: 16px; letter-spacing: 2px; }
.client-info { display: flex; align-items: center; gap: 16px; }
.client-avatar { width: 48px; height: 48px; background: var(--kon-bg); border-radius: 50%; display: flex; align-items: center; justify-content: center; color: var(--kon-primary); }
.client-avatar svg { width: 24px; height: 24px; }
.client-text h4 { color: var(--kon-dark); font-size: 18px; margin-bottom: 4px; }
.client-text span { color: var(--kon-text-light); font-size: 14px; }

/* FAQ Section */
.faq { padding: 120px 0; background: var(--kon-white); }
.faq-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 16px; }
.faq-item { background: var(--kon-bg); border: 1px solid #E2E8F0; border-radius: 8px; overflow: hidden; transition: all 0.3s ease; }
.faq-item summary {
    padding: 24px;
    font-weight: 600;
    font-size: 18px;
    color: var(--kon-dark);
    cursor: pointer;
    list-style: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background-color 0.3s ease;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
    content: '+';
    font-size: 24px;
    color: var(--kon-primary);
    font-weight: 400;
    transition: transform 0.3s ease;
}
.faq-item[open] summary::after {
    content: '\2212';
    transform: rotate(180deg);
}
.faq-item[open] summary {
    background-color: var(--kon-primary-light);
    color: var(--kon-primary);
}
.faq-content {
    padding: 0 24px 24px;
    color: var(--kon-text-light);
    font-size: 16px;
    line-height: 1.6;
}

/* CTA Area */
.cta-area {
    padding: 100px 0;
    background: var(--kon-white);
    text-align: center;
}
.cta-box {
    background: var(--kon-bg);
    padding: 80px 40px;
    border: 1px solid #E2E8F0;
    max-width: 800px;
    margin: 0 auto;
}
.cta-box h2 {
    font-family: var(--font-heading);
    font-size: 40px;
    color: var(--kon-dark);
    margin-bottom: 24px;
}
.cta-box p {
    font-size: 18px;
    color: var(--kon-text-light);
    margin-bottom: 40px;
}

/* Footer */
footer {
    background: var(--kon-dark-2);
    color: #CBD5E1;
    padding: 80px 0 24px;
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 60px;
    margin-bottom: 60px;
}
.footer-col h3 {
    font-family: var(--font-heading);
    font-size: 28px;
    color: var(--kon-white);
    margin-bottom: 24px;
}
.footer-col h4 {
    color: var(--kon-white);
    margin-bottom: 24px;
    font-size: 18px;
}
.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 12px; }
.footer-col ul li a { color: #CBD5E1; transition: color 0.3s; }
.footer-col ul li a:hover { color: var(--kon-primary-light); }
.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 24px;
    text-align: center;
    font-size: 14px;
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .hamburger { display: block; }
    .nav-links {
        position: fixed;
        top: 100px; /* Adjust for return banner + header */
        left: -100%;
        width: 100%;
        height: calc(100vh - 100px);
        background-color: var(--kon-dark);
        flex-direction: column;
        padding-top: 48px;
        transition: left 0.3s ease;
    }
    .nav-links.active { left: 0; }
    
    .hero h1 { font-size: 48px; }
    .services-grid, .portfolio-grid, .footer-grid, .tentang-content, .proses-grid, .testimoni-grid { grid-template-columns: 1fr; }
    header { background: var(--kon-dark); padding: 16px 0; border-bottom: 1px solid rgba(255,255,255,0.1); }
    .hero { margin-top: 41px; }
}