/* ==========================================
   DESIGN TOKENS (Tulsa Masonry style)
   ========================================== */
:root {
    --color-primary: #85382C;
    --color-primary-dark: #542018;
    --color-primary-light: #AB4A3B;
    --color-primary-subtle: #773126;
    --color-white: #FFFFFF;
    --color-light-bg: #F6F6F6;
    --color-border: #E2E2E2;
    --color-text-primary: #1B1B1B;
    --color-text-secondary: #5A5A5A;
    --color-text-muted: #6E6E6E;
    --color-facebook: #1877F2;
    --color-line: #00B900;
    --font-heading: 'Kanit', 'Playfair Display', sans-serif;
    --font-body: 'Sarabun', 'Inter', sans-serif;
    --font-accent: 'Playfair Display', serif;
    --container-max: 1200px;
    --border-radius: 8px;
    --transition: all 0.3s ease;
}

/* ==========================================
   RESET & BASE
   ========================================== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; font-size: 16px; }
body { font-family: var(--font-body); color: var(--color-text-primary); background: var(--color-white); line-height: 1.6; overflow-x: hidden; }
img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; transition: var(--transition); }
.container { max-width: var(--container-max); margin: 0 auto; padding: 0 24px; }
h1,h2,h3,h4,h5 { font-family: var(--font-heading); font-weight: 700; line-height: 1.2; }

/* ==========================================
   BUTTONS
   ========================================== */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 12px 24px; border-radius: var(--border-radius); font-weight: 600; font-size: 0.9rem; font-family: var(--font-body); cursor: pointer; border: none; transition: var(--transition); }
.btn-primary { background: var(--color-primary); color: white; }
.btn-primary:hover { background: var(--color-primary-dark); transform: translateY(-1px); box-shadow: 0 4px 12px rgba(133,56,44,0.3); }
.btn-outline-white { background: transparent; color: white; border: 2px solid rgba(255,255,255,0.5); }
.btn-outline-white:hover { background: white; color: var(--color-primary); border-color: white; }
.btn-large { padding: 16px 32px; font-size: 1rem; }

/* ==========================================
   NAVIGATION
   ========================================== */
.nav { position: fixed; top: 0; left: 0; right: 0; z-index: 1000; background: rgba(255,255,255,0.97); backdrop-filter: blur(10px); border-bottom: 1px solid var(--color-border); transition: var(--transition); }
.nav.scrolled { box-shadow: 0 2px 20px rgba(0,0,0,0.08); }
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 80px; }
.nav-logo { display: flex; align-items: center; gap: 12px; font-family: var(--font-heading); font-size: 1.25rem; font-weight: 700; color: var(--color-primary); }
.nav-logo-icon { width: 48px; height: 48px; background: var(--color-primary); border-radius: 50%; display: flex; align-items: center; justify-content: center; color: white; font-size: 1.25rem; font-weight: 800; }
.nav-links { display: flex; align-items: center; gap: 24px; list-style: none; }
.nav-links a { font-size: 0.9rem; font-weight: 500; color: var(--color-text-primary); position: relative; padding: 4px 0; }
.nav-links a::after { content: ''; position: absolute; bottom: -2px; left: 0; width: 0; height: 2px; background: var(--color-primary); transition: width 0.3s ease; }
.nav-links a:hover::after { width: 100%; }
.nav-cta { display: flex; align-items: center; gap: 12px; }
.nav-phone { display: flex; align-items: center; gap: 6px; font-weight: 600; font-size: 0.95rem; color: var(--color-primary); }
.mobile-toggle { display: none; background: none; border: none; cursor: pointer; padding: 8px; color: var(--color-text-primary); }

/* ==========================================
   HERO (Slideshow + Claim)
   ========================================== */
.hero { position: relative; min-height: 100vh; display: flex; align-items: center; justify-content: center; overflow: hidden; padding-top: 80px; }
.hero-slideshow { position: absolute; inset: 0; z-index: 0; }
.hero-slide { position: absolute; inset: 0; background-size: cover; background-position: center; opacity: 0; transition: opacity 1.5s ease; }
.hero-slide.active { opacity: 1; }
.hero-overlay { position: absolute; inset: 0; background: linear-gradient(135deg, rgba(27,27,27,0.8) 0%, rgba(84,32,24,0.65) 100%); z-index: 1; }
.hero-content { position: relative; z-index: 2; text-align: center; max-width: 900px; padding: 60px 24px; }
.hero-badge { display: inline-flex; align-items: center; gap: 8px; background: rgba(255,255,255,0.15); backdrop-filter: blur(10px); padding: 8px 20px; border-radius: 50px; font-size: 0.85rem; color: white; margin-bottom: 24px; border: 1px solid rgba(255,255,255,0.2); }
.hero-repeating-text { font-family: var(--font-heading); font-size: clamp(3rem,8vw,6rem); font-weight: 800; color: transparent; -webkit-text-stroke: 1px rgba(255,255,255,0.2); line-height: 1.1; margin-bottom: -20px; user-select: none; }
.hero-title { font-family: var(--font-heading); font-size: clamp(2.5rem,6vw,4.5rem); font-weight: 800; color: white; line-height: 1.1; margin-bottom: 20px; text-shadow: 0 2px 20px rgba(0,0,0,0.3); }
.hero-subtitle { font-size: clamp(1rem,2vw,1.25rem); color: rgba(255,255,255,0.9); font-weight: 400; margin-bottom: 32px; max-width: 600px; margin-left: auto; margin-right: auto; }
.hero-buttons { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.hero-shape-divider { position: absolute; bottom: -1px; left: 0; right: 0; z-index: 3; line-height: 0; }
.hero-shape-divider svg { width: 100%; height: 60px; }

/* ==========================================
   SECTIONS
   ========================================== */
.section { padding: 80px 0; }
.section-gray { background: var(--color-light-bg); }
.section-dark { background: var(--color-text-primary); color: white; }
.section-primary-light { background: var(--color-primary); }
.section-header { text-align: center; margin-bottom: 60px; }
.section-label { display: inline-block; font-size: 0.8rem; font-weight: 600; text-transform: uppercase; letter-spacing: 3px; color: var(--color-primary); margin-bottom: 12px; }
.section-title { font-size: clamp(2rem,4vw,3rem); margin-bottom: 16px; }
.section-subtitle { font-size: 1.1rem; color: var(--color-text-secondary); max-width: 600px; margin: 0 auto; }

/* ==========================================
   SERVICES
   ========================================== */
.services-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 24px; }
.service-card { background: white; border-radius: var(--border-radius); padding: 32px 24px; border: 1px solid var(--color-border); transition: var(--transition); text-align: center; }
.service-card:hover { transform: translateY(-4px); box-shadow: 0 12px 40px rgba(0,0,0,0.08); }
.service-card-icon { width: 64px; height: 64px; border-radius: 50%; display: flex; align-items: center; justify-content: center; margin: 0 auto 20px; }
.service-card-title { font-size: 1.15rem; margin-bottom: 12px; }
.service-card-text { font-size: 0.9rem; color: var(--color-text-secondary); line-height: 1.6; }

/* ==========================================
   WHY US (7 Points)
   ========================================== */
.why-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 40px 32px; }
.why-item { }
.why-number { font-family: var(--font-heading); font-size: 3rem; font-weight: 800; color: var(--color-primary); opacity: 0.3; line-height: 1; margin-bottom: 12px; }
.section-primary-light .why-number { color: white; opacity: 0.2; }
.why-title { font-size: 1.1rem; font-weight: 700; margin-bottom: 8px; }
.why-text { font-size: 0.9rem; color: var(--color-text-secondary); line-height: 1.6; }

/* ==========================================
   GALLERY
   ========================================== */
.gallery-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 16px; }
.gallery-item { position: relative; border-radius: var(--border-radius); overflow: hidden; aspect-ratio: 4/3; cursor: pointer; }
.gallery-placeholder { width: 100%; height: 100%; }
.gallery-item-overlay { position: absolute; inset: 0; background: linear-gradient(to top, rgba(0,0,0,0.7) 0%, transparent 50%); opacity: 0; transition: opacity 0.3s ease; display: flex; align-items: flex-end; padding: 20px; }
.gallery-item:hover .gallery-item-overlay { opacity: 1; }
.gallery-item-label { color: white; font-weight: 600; font-size: 0.95rem; }
.gallery-item-location { color: rgba(255,255,255,0.8); font-size: 0.8rem; margin-top: 2px; }

/* ==========================================
   MATERIALS
   ========================================== */
.materials-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 32px; }
.material-item { text-align: center; padding: 32px 24px; }
.material-icon { width: 56px; height: 56px; border-radius: 50%; background: rgba(133,56,44,0.1); display: flex; align-items: center; justify-content: center; margin: 0 auto 16px; }
.material-item h4 { font-size: 1.1rem; margin-bottom: 8px; }
.material-item p { font-size: 0.9rem; color: var(--color-text-secondary); line-height: 1.6; }

/* ==========================================
   PORTFOLIO CARDS
   ========================================== */
.portfolio-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(350px, 1fr)); gap: 24px; }
.portfolio-card { background: white; border-radius: var(--border-radius); overflow: hidden; border: 1px solid var(--color-border); transition: var(--transition); }
.portfolio-card:hover { transform: translateY(-4px); box-shadow: 0 12px 40px rgba(0,0,0,0.08); }
.portfolio-card-image { width: 100%; height: 220px; }
.portfolio-card-content { padding: 20px; }
.portfolio-card-tag { display: inline-block; font-size: 0.75rem; font-weight: 600; text-transform: uppercase; letter-spacing: 1px; color: var(--color-primary); background: rgba(133,56,44,0.1); padding: 4px 10px; border-radius: 4px; margin-bottom: 10px; }
.portfolio-card-title { font-size: 1.2rem; margin-bottom: 8px; }
.portfolio-card-location { display: flex; align-items: center; gap: 6px; font-size: 0.85rem; color: var(--color-text-muted); }

/* ==========================================
   PRICING
   ========================================== */
.pricing-card { max-width: 600px; margin: 0 auto; background: white; border-radius: 16px; overflow: hidden; box-shadow: 0 20px 60px rgba(0,0,0,0.1); }
.pricing-header { background: var(--color-primary); color: white; padding: 32px; text-align: center; }
.pricing-price { font-family: var(--font-heading); font-size: 3rem; font-weight: 800; }
.pricing-unit { font-size: 1rem; font-weight: 400; opacity: 0.8; }
.pricing-body { padding: 32px; }
.pricing-list { list-style: none; }
.pricing-list li { display: flex; align-items: flex-start; gap: 12px; padding: 12px 0; border-bottom: 1px solid var(--color-border); font-size: 0.95rem; }
.pricing-list li:last-child { border-bottom: none; }
.pricing-list svg { flex-shrink: 0; margin-top: 2px; }

/* ==========================================
   TESTIMONIALS
   ========================================== */
.testimonials-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(350px, 1fr)); gap: 24px; }
.testimonial-card { background: white; border-radius: var(--border-radius); padding: 32px; border: 1px solid var(--color-border); }
.testimonial-stars { display: flex; gap: 2px; margin-bottom: 16px; }
.testimonial-stars svg { width: 18px; height: 18px; }
.testimonial-text { font-size: 0.95rem; color: var(--color-text-secondary); line-height: 1.7; font-style: italic; margin-bottom: 20px; }
.testimonial-author { display: flex; align-items: center; gap: 12px; }
.testimonial-avatar { width: 48px; height: 48px; border-radius: 50%; background: var(--color-primary); color: white; display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: 1.1rem; }
.testimonial-name { font-weight: 600; font-size: 0.95rem; }
.testimonial-location { font-size: 0.8rem; color: var(--color-text-muted); }

/* ==========================================
   CONTACT
   ========================================== */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; }
.contact-details { display: flex; flex-direction: column; gap: 20px; }
.contact-detail { display: flex; align-items: flex-start; gap: 16px; }
.contact-detail-icon { width: 48px; height: 48px; border-radius: 50%; background: rgba(133,56,44,0.1); display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.contact-detail-label { font-size: 0.8rem; font-weight: 600; text-transform: uppercase; letter-spacing: 1px; color: var(--color-text-muted); margin-bottom: 4px; }
.contact-detail-value { font-weight: 600; font-size: 1rem; }
.contact-form { background: white; border-radius: 16px; padding: 40px; box-shadow: 0 10px 40px rgba(0,0,0,0.06); border: 1px solid var(--color-border); }
.form-group { margin-bottom: 20px; }
.form-label { display: block; font-weight: 500; font-size: 0.9rem; margin-bottom: 6px; }
.form-input, .form-textarea { width: 100%; padding: 12px 16px; border: 1px solid var(--color-border); border-radius: var(--border-radius); font-family: var(--font-body); font-size: 0.95rem; transition: var(--transition); background: var(--color-light-bg); }
.form-input:focus, .form-textarea:focus { outline: none; border-color: var(--color-primary); box-shadow: 0 0 0 3px rgba(133,56,44,0.1); background: white; }
.form-textarea { resize: vertical; min-height: 120px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.social-links { display: flex; gap: 12px; margin-top: 24px; }
.social-link { width: 44px; height: 44px; border-radius: 50%; display: flex; align-items: center; justify-content: center; transition: var(--transition); }
.social-link.facebook { background: var(--color-facebook); color: white; }
.social-link.line { background: var(--color-line); color: white; }
.social-link:hover { transform: translateY(-2px); box-shadow: 0 4px 12px rgba(0,0,0,0.2); }

/* ==========================================
   FOOTER
   ========================================== */
.footer { background: var(--color-text-primary); color: white; padding: 60px 0 0; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; padding-bottom: 40px; border-bottom: 1px solid rgba(255,255,255,0.1); }
.footer-brand-text { font-size: 0.9rem; color: rgba(255,255,255,0.6); line-height: 1.7; margin-top: 16px; }
.footer-title { font-size: 1rem; font-weight: 600; margin-bottom: 20px; }
.footer-links { list-style: none; }
.footer-links li { margin-bottom: 10px; }
.footer-links a { font-size: 0.9rem; color: rgba(255,255,255,0.6); }
.footer-links a:hover { color: white; }
.footer-bottom { padding: 24px 0; text-align: center; font-size: 0.85rem; color: rgba(255,255,255,0.4); }

/* ==========================================
   FLOATING CTA
   ========================================== */
.floating-cta { position: fixed; bottom: 24px; right: 24px; z-index: 999; display: flex; flex-direction: column; align-items: flex-end; gap: 12px; }
.floating-phone, .floating-line { width: 56px; height: 56px; border-radius: 50%; display: flex; align-items: center; justify-content: center; color: white; transition: var(--transition); }
.floating-phone { background: var(--color-primary); box-shadow: 0 4px 20px rgba(133,56,44,0.4); }
.floating-line { background: var(--color-line); box-shadow: 0 4px 20px rgba(0,185,0,0.4); }
.floating-phone:hover, .floating-line:hover { transform: scale(1.1); }

/* ==========================================
   LIGHTBOX
   ========================================== */
.lightbox { position: fixed; inset: 0; z-index: 10000; background: rgba(0,0,0,0.95); display: none; align-items: center; justify-content: center; cursor: pointer; }
.lightbox.active { display: flex; }
.lightbox-close { position: absolute; top: 20px; right: 20px; background: none; border: none; cursor: pointer; padding: 8px; }

/* ==========================================
   ANIMATIONS
   ========================================== */
.fade-in { opacity: 0; transform: translateY(20px); transition: opacity 0.6s ease, transform 0.6s ease; }
.fade-in.visible { opacity: 1; transform: translateY(0); }

/* ==========================================
   RESPONSIVE
   ========================================== */
@media (max-width: 1024px) {
    .contact-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .portfolio-grid { grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); }
}

@media (max-width: 768px) {
    .nav-links { display: none; }
    .mobile-toggle { display: block; }
    .hero-repeating-text { display: none; }
    .hero-buttons { flex-direction: column; align-items: center; }
    .testimonials-grid { grid-template-columns: 1fr; }
    .form-row { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; }
    .why-grid { grid-template-columns: 1fr; }
    .portfolio-grid { grid-template-columns: 1fr; }
    .section { padding: 60px 0; }
}

@media (max-width: 480px) {
    .gallery-grid { grid-template-columns: 1fr; }
    .services-grid { grid-template-columns: 1fr; }
    .materials-grid { grid-template-columns: 1fr; }
}