/* ==========================================
   CSS SYSTEM DESIGN (Jasa Service AC Landing Page)
   ========================================== */
:root {
    --primary: #0284c7; /* Fresh Sky Blue */
    --primary-hover: #0369a1;
    
    --secondary: #0d9488; /* Fresh Teal (representing clean air) */
    --secondary-hover: #0f766e;
    
    --accent: #f97316; /* Warning Orange (Action/CTA/WhatsApp) */
    --accent-hover: #ea580c;
    
    --bg-main: #f8fafc; /* Fresh Off-White */
    --bg-surface: #ffffff;
    --bg-navbar: rgba(248, 250, 252, 0.9);
    
    --text-primary: #0f172a; /* Deep Slate (Google Style) */
    --text-secondary: #475569; /* Slate Gray */
    --text-muted: #94a3b8;
    
    --border-color: #e2e8f0; /* Thin subtle borders */
    --card-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -2px rgba(0, 0, 0, 0.03);
    --hover-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.05), 0 4px 6px -4px rgba(0, 0, 0, 0.05);
    
    --font-sans: 'Plus Jakarta Sans', sans-serif;
    
    --transition-speed: 0.25s;
}

/* ==========================================
   RESET & BASE STYLES
   ========================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    scroll-behavior: smooth;
}

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

h1, h2, h3, h4 {
    color: var(--text-primary);
    font-weight: 700;
}

a {
    text-decoration: none;
    color: inherit;
    transition: all var(--transition-speed) ease;
}

/* ==========================================
   BUTTON SYSTEM
   ========================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: 8px;
    cursor: pointer;
    transition: all var(--transition-speed) ease;
    border: none;
}

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

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

.btn-accent {
    background-color: var(--accent);
    color: #ffffff;
}

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

.btn-outline {
    background-color: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}

.btn-outline:hover {
    background-color: #f1f5f9;
    border-color: #cbd5e1;
    transform: translateY(-2px);
}

.btn-block {
    display: flex;
    width: 100%;
}

/* ==========================================
   HEADER / NAVBAR
   ========================================== */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    background-color: var(--bg-navbar);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 16px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.3rem;
    font-weight: 800;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 8px;
}

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

.nav-links {
    display: flex;
    align-items: center;
    gap: 28px;
}

.nav-link {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.nav-link:hover, .nav-link.active {
    color: var(--primary);
}

.mobile-toggle {
    display: none;
    background: none;
    font-size: 1.4rem;
    color: var(--text-primary);
    cursor: pointer;
}

/* ==========================================
   HERO SECTION
   ========================================== */
.hero-section {
    padding: 140px 20px 80px;
    max-width: 1200px;
    margin: 0 auto;
}

.hero-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.badge-status {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: #e0f2fe;
    color: var(--primary);
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 700;
    margin-bottom: 20px;
}

.pulse-dot {
    width: 8px;
    height: 8px;
    background-color: var(--primary);
    border-radius: 50%;
    position: relative;
}

.pulse-dot::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    background-color: var(--primary);
    border-radius: 50%;
    animation: pulse 1.5s infinite ease-in-out;
}

@keyframes pulse {
    0% { transform: scale(1); opacity: 1; }
    100% { transform: scale(2.5); opacity: 0; }
}

.hero-content h1 {
    font-size: 3.2rem;
    line-height: 1.15;
    margin-bottom: 20px;
}

.hero-content p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 30px;
    max-width: 500px;
}

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

.hero-illustration {
    display: flex;
    justify-content: center;
    align-items: center;
}

/* Visual Card Widget on Hero */
.visual-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.04);
    width: 340px;
    overflow: hidden;
}

.visual-header {
    background: #f8fafc;
    border-bottom: 1px solid var(--border-color);
    padding: 12px 18px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.visual-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

.visual-dot.red { background-color: #ef4444; }
.visual-dot.yellow { background-color: #eab308; }
.visual-dot.green { background-color: #22c55e; }

.visual-title {
    font-size: 0.78rem;
    font-weight: 700;
    color: var(--text-muted);
    margin-left: auto;
}

.visual-body {
    padding: 30px;
    text-align: center;
}

.temp-display {
    font-size: 5rem;
    font-weight: 800;
    color: var(--primary);
    line-height: 1;
    margin-bottom: 10px;
    position: relative;
    user-select: none;
}

.temp-display p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 600;
    margin-top: 5px;
}

.status-indicator {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-top: 20px;
    border-top: 1px solid var(--border-color);
    padding-top: 20px;
}

.status-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    font-weight: 600;
}

/* ==========================================
   STATS BAR
   ========================================== */
.stats-bar {
    background-color: #f1f5f9;
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
    padding: 40px 20px;
}

.stats-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    text-align: center;
}

.stat-item h3 {
    font-size: 2.2rem;
    color: var(--primary);
    margin-bottom: 5px;
}

.stat-item p {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-secondary);
}

/* ==========================================
   SERVICES SECTION
   ========================================== */
.services-section {
    max-width: 1200px;
    margin: 100px auto;
    padding: 0 20px;
}

.section-header {
    text-align: center;
    max-width: 600px;
    margin: 0 auto 50px;
}

.section-subtitle {
    font-size: 0.85rem;
    font-weight: 800;
    text-transform: uppercase;
    color: var(--primary);
    letter-spacing: 1.5px;
    display: block;
    margin-bottom: 10px;
}

.section-header h2 {
    font-size: 2.2rem;
    margin-bottom: 15px;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.service-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 30px;
    display: flex;
    flex-direction: column;
    box-shadow: var(--card-shadow);
    transition: all var(--transition-speed) ease;
}

.service-card:hover {
    transform: translateY(-4px);
    border-color: var(--primary);
    box-shadow: var(--hover-shadow);
}

.service-icon {
    width: 48px;
    height: 48px;
    background: #e0f2fe;
    color: var(--primary);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    margin-bottom: 20px;
}

.service-card h3 {
    font-size: 1.15rem;
    margin-bottom: 10px;
}

.service-card p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 20px;
    flex-grow: 1;
}

.price-tag {
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--secondary);
    background: #e6f4ea;
    align-self: flex-start;
    padding: 3px 10px;
    border-radius: 4px;
}

/* ==========================================
   WHY CHOOSE US
   ========================================== */
.why-us-section {
    background-color: var(--bg-surface);
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
    padding: 100px 20px;
}

.why-us-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 80px;
    align-items: center;
}

.benefit-list {
    margin-top: 30px;
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.benefit-item {
    display: flex;
    gap: 15px;
}

.benefit-icon {
    font-size: 1.4rem;
    margin-top: 3px;
}

.benefit-item h4 {
    font-size: 1.1rem;
    margin-bottom: 4px;
}

.benefit-item p {
    font-size: 0.92rem;
    color: var(--text-secondary);
}

/* Info Graphic Card */
.info-graphic-card {
    background: var(--bg-main);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 35px;
    box-shadow: var(--card-shadow);
}

.info-graphic-card i {
    font-size: 2.2rem;
    margin-bottom: 15px;
    display: block;
}

.info-graphic-card h3 {
    font-size: 1.3rem;
    margin-bottom: 20px;
}

.info-graphic-card ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.info-graphic-card li {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.9rem;
    font-weight: 600;
}

.bullet {
    width: 22px;
    height: 22px;
    background: var(--primary);
    color: #ffffff;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 700;
}

/* ==========================================
   CALCULATOR SECTION
   ========================================== */
.calculator-section {
    max-width: 1200px;
    margin: 100px auto;
    padding: 0 20px;
}

.calc-wrapper {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 40px;
    padding: 40px;
    margin-top: 40px;
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    box-shadow: var(--card-shadow);
}

.calc-form {
    display: flex;
    flex-direction: column;
    gap: 25px;
    justify-content: center;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--text-primary);
}

.form-group select, .form-group input, .form-group textarea {
    padding: 12px 16px;
    font-size: 0.95rem;
    font-family: inherit;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background-color: var(--bg-main);
    color: var(--text-primary);
    transition: border-color var(--transition-speed) ease;
}

.form-group select:focus, .form-group input:focus, .form-group textarea:focus {
    border-color: var(--primary);
    outline: none;
}

.unit-counter {
    display: flex;
    align-items: center;
    gap: 10px;
    max-width: 180px;
}

.counter-btn {
    width: 44px;
    height: 44px;
    background: #e2e8f0;
    color: var(--text-primary);
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.counter-btn:hover {
    background: #cbd5e1;
}

.unit-counter input {
    text-align: center;
    width: 60px;
    padding: 10px 0;
    font-weight: 700;
}

.calc-result-box {
    background: #f0fdf4;
    border: 1px solid #bbf7d0;
    border-radius: 12px;
    padding: 30px;
    text-align: center;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.calc-result-box h4 {
    font-size: 1rem;
    color: var(--secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 10px;
}

.result-price {
    font-size: 2.8rem;
    font-weight: 800;
    color: #16a34a;
    margin-bottom: 15px;
}

.price-note {
    font-size: 0.78rem;
    color: var(--text-secondary);
    margin-bottom: 25px;
}

/* ==========================================
   TESTIMONIALS SECTION
   ========================================== */
.testimonials-section {
    max-width: 1200px;
    margin: 100px auto;
    padding: 0 20px;
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.testimonial-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 30px;
    box-shadow: var(--card-shadow);
}

.rating {
    color: #fbbf24;
    margin-bottom: 15px;
    font-size: 0.9rem;
}

.testimonial-card p {
    font-size: 0.92rem;
    line-height: 1.6;
    margin-bottom: 20px;
    font-style: italic;
}

.user-info h4 {
    font-size: 0.95rem;
    margin-bottom: 2px;
}

.user-info span {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* ==========================================
   ORDER / BOOKING SECTION
   ========================================== */
.order-section {
    background-color: var(--bg-surface);
    border-top: 1px solid var(--border-color);
    padding: 100px 20px;
}

.order-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 0.9fr 1.1fr;
    gap: 80px;
    align-items: center;
}

.contact-quick {
    margin-top: 40px;
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.quick-item {
    display: flex;
    align-items: center;
    gap: 15px;
}

.quick-item i {
    width: 44px;
    height: 44px;
    background: #f0fdf4;
    color: var(--secondary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
}

.quick-item h4 {
    font-size: 0.95rem;
    margin-bottom: 2px;
}

.quick-item p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 600;
}

.order-form-container {
    padding: 40px;
    border-radius: 16px;
    border: 1px solid var(--border-color);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.04);
}

.form-row {
    display: grid;
    grid-template-columns: 1.3fr 0.7fr;
    gap: 15px;
}

/* ==========================================
   FOOTER
   ========================================== */
footer {
    background: var(--text-primary);
    color: #94a3b8;
    padding: 40px 20px;
    border-top: 1px solid #1e293b;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.9rem;
}

.link-back-portfolio {
    color: #e2e8f0;
    font-weight: 600;
    text-decoration: underline;
}

.link-back-portfolio:hover {
    color: var(--primary);
}

/* Helper Utilities */
.text-sky { color: var(--primary); }
.text-green { color: var(--secondary); }

/* ==========================================
   RESPONSIVE DESIGN (Media Queries)
   ========================================== */
@media (max-width: 1024px) {
    .hero-container {
        grid-template-columns: 1fr;
        gap: 40px;
        text-align: center;
    }
    .hero-content p {
        margin: 0 auto 30px;
    }
    .hero-ctas {
        justify-content: center;
    }
    .stats-container {
        grid-template-columns: repeat(2, 1fr);
    }
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .why-us-container {
        grid-template-columns: 1fr;
        gap: 50px;
    }
    .why-us-image {
        display: flex;
        justify-content: center;
    }
    .calc-wrapper {
        grid-template-columns: 1fr;
    }
    .testimonials-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .order-container {
        grid-template-columns: 1fr;
        gap: 50px;
    }
}

@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 76px;
        left: 0;
        width: 100%;
        height: calc(100vh - 76px);
        background: var(--bg-surface);
        flex-direction: column;
        justify-content: center;
        gap: 30px;
        transform: translateX(-100%);
        transition: transform var(--transition-speed) ease;
        border-top: 1px solid var(--border-color);
        box-shadow: 0 10px 15px rgba(0,0,0,0.05);
    }
    
    .nav-links.active {
        transform: translateX(0);
    }
    
    .mobile-toggle {
        display: block;
    }
    
    .hero-content h1 {
        font-size: 2.2rem;
    }
    
    .testimonials-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .stats-container {
        grid-template-columns: 1fr;
    }
    .services-grid {
        grid-template-columns: 1fr;
    }
    .hero-ctas {
        flex-direction: column;
        gap: 10px;
    }
    .form-row {
        grid-template-columns: 1fr;
    }
    .calc-wrapper {
        padding: 20px;
    }
}