/* =============================================
   TANKLESS WATER HEATER REPAIR WAYNE PA
   Premium Editorial Design System
   ============================================= */

:root {
    --color-navy: #1a2530;
    --color-navy-light: #243240;
    --color-amber: #d97706;
    --color-amber-hover: #b45309;
    --color-slate: #475569;
    --color-slate-light: #64748b;
    --color-gray-100: #f1f5f9;
    --color-gray-200: #e2e8f0;
    --color-gray-300: #cbd5e1;
    --color-white: #ffffff;
    --color-off-white: #f8fafc;
    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    --space-24: 6rem;
    --bp-sm: 640px;
    --bp-md: 768px;
    --bp-lg: 1024px;
    --bp-xl: 1280px;
    --container-max: 1200px;
    --container-narrow: 800px;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body { font-family: var(--font-sans); font-size: 1rem; line-height: 1.6; color: var(--color-navy); background: var(--color-white); }
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
address { font-style: normal; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }

h1, h2, h3, h4, h5, h6 { font-weight: 600; line-height: 1.2; color: var(--color-navy); }
h1 { font-size: clamp(1.75rem, 5vw, 3rem); letter-spacing: -0.02em; }
h2 { font-size: clamp(1.5rem, 4vw, 2.25rem); letter-spacing: -0.01em; }
h3 { font-size: clamp(1.125rem, 3vw, 1.5rem); }
p { margin-bottom: var(--space-4); }
p:last-child { margin-bottom: 0; }

.container { width: 100%; max-width: var(--container-max); margin: 0 auto; padding: 0 var(--space-6); }
@media (min-width: var(--bp-lg)) { .container { padding: 0 var(--space-10); } }

.site-header { position: sticky; top: 0; z-index: 100; background: var(--color-white); border-bottom: 1px solid var(--color-gray-200); padding: var(--space-4) 0; }
.header-container { display: flex; align-items: center; justify-content: space-between; max-width: var(--container-max); margin: 0 auto; padding: 0 var(--space-6); }
@media (min-width: var(--bp-lg)) { .header-container { padding: 0 var(--space-10); } }
.logo { display: flex; flex-direction: column; gap: var(--space-1); }
.logo-text { font-size: 1.125rem; font-weight: 700; color: var(--color-navy); }
.logo-location { font-size: 0.75rem; color: var(--color-slate-light); font-weight: 500; text-transform: uppercase; letter-spacing: 0.05em; }
.main-nav { display: none; }
@media (min-width: var(--bp-lg)) { .main-nav { display: block; } }
.nav-list { display: flex; gap: var(--space-6); }
.nav-link { font-size: 0.9375rem; font-weight: 500; color: var(--color-slate); padding: var(--space-2) 0; position: relative; transition: color var(--transition-fast); }
.nav-link:hover, .nav-link.active { color: var(--color-navy); }
.nav-link::after { content: ''; position: absolute; bottom: 0; left: 0; width: 0; height: 2px; background: var(--color-amber); transition: width var(--transition-base); }
.nav-link:hover::after, .nav-link.active::after { width: 100%; }
.header-phone { display: none; align-items: center; gap: var(--space-2); font-weight: 600; color: var(--color-navy); padding: var(--space-3) var(--space-5); background: var(--color-gray-100); border-radius: var(--radius-md); transition: background var(--transition-fast); min-height: 44px; }
.header-phone:hover { background: var(--color-gray-200); }
@media (min-width: var(--bp-lg)) { .header-phone { display: flex; } }
.phone-icon { width: 18px; height: 18px; }
.phone-number { font-size: 0.9375rem; }
.mobile-menu-toggle { display: flex; align-items: center; justify-content: center; width: 44px; height: 44px; padding: var(--space-2); }
@media (min-width: var(--bp-lg)) { .mobile-menu-toggle { display: none; } }
.hamburger { display: block; width: 24px; height: 2px; background: var(--color-navy); position: relative; }
.hamburger::before, .hamburger::after { content: ''; position: absolute; left: 0; width: 100%; height: 2px; background: var(--color-navy); }
.hamburger::before { top: -7px; }
.hamburger::after { bottom: -7px; }
.main-nav.mobile-open { display: block; position: absolute; top: 100%; left: 0; right: 0; background: var(--color-white); border-bottom: 1px solid var(--color-gray-200); padding: var(--space-4) var(--space-6); box-shadow: var(--shadow-lg); }
.main-nav.mobile-open .nav-list { flex-direction: column; gap: var(--space-4); }
.main-nav.mobile-open .nav-link { display: block; padding: var(--space-3) 0; font-size: 1rem; }

.btn { display: inline-flex; align-items: center; justify-content: center; gap: var(--space-2); font-weight: 600; font-size: 0.9375rem; padding: var(--space-4) var(--space-6); border-radius: var(--radius-md); transition: all var(--transition-fast); min-height: 48px; }
.btn-icon { width: 20px; height: 20px; }
.btn-primary { background: var(--color-amber); color: var(--color-white); }
.btn-primary:hover { background: var(--color-amber-hover); }
.btn-secondary { background: var(--color-navy); color: var(--color-white); }
.btn-secondary:hover { background: var(--color-navy-light); }
.btn-outline { background: transparent; color: var(--color-navy); border: 2px solid var(--color-navy); }
.btn-outline:hover { background: var(--color-navy); color: var(--color-white); }
.btn-large { padding: var(--space-5) var(--space-8); font-size: 1rem; min-height: 56px; }

.hero { padding: var(--space-16) 0; background: var(--color-off-white); }
@media (min-width: var(--bp-md)) { .hero { padding: var(--space-20) 0; } }
@media (min-width: var(--bp-lg)) { .hero { padding: var(--space-24) 0; } }
.hero-content { max-width: var(--container-max); margin: 0 auto; padding: 0 var(--space-6); }
@media (min-width: var(--bp-lg)) { .hero-content { padding: 0 var(--space-10); } }
.hero-home .hero-content { display: grid; gap: var(--space-10); }
@media (min-width: var(--bp-lg)) { .hero-home .hero-content { grid-template-columns: 1fr 1fr; align-items: center; gap: var(--space-16); } }
.hero-title { margin-bottom: var(--space-5); }
.hero-subtitle { font-size: 1.125rem; color: var(--color-slate); max-width: 600px; margin-bottom: var(--space-8); line-height: 1.7; }
.hero-cta-group { display: flex; flex-direction: column; gap: var(--space-4); }
@media (min-width: var(--bp-sm)) { .hero-cta-group { flex-direction: row; flex-wrap: wrap; } }
.hero-visual { margin-top: var(--space-8); }
@media (min-width: var(--bp-lg)) { .hero-visual { margin-top: 0; } }
.hero-image-container { position: relative; border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-lg); }
.hero-image { width: 100%; height: auto; aspect-ratio: 4/3; object-fit: cover; }
.hero-location-bar { margin-top: var(--space-8); padding-top: var(--space-6); border-top: 1px solid var(--color-gray-200); }
.location-text { font-size: 0.9375rem; color: var(--color-slate-light); text-align: center; }
.hero-service, .hero-why, .hero-process, .hero-faq, .hero-contact { text-align: center; background: var(--color-navy); color: var(--color-white); }
.hero-service .hero-title, .hero-why .hero-title, .hero-process .hero-title, .hero-faq .hero-title, .hero-contact .hero-title { color: var(--color-white); }
.hero-service .hero-subtitle, .hero-why .hero-subtitle, .hero-process .hero-subtitle, .hero-faq .hero-subtitle, .hero-contact .hero-subtitle { color: var(--color-gray-300); margin-left: auto; margin-right: auto; }

.section { padding: var(--space-16) 0; }
@media (min-width: var(--bp-md)) { .section { padding: var(--space-20) 0; } }
.section-title { margin-bottom: var(--space-8); }
.section-title-centered { text-align: center; }

.intro-grid { display: grid; gap: var(--space-10); }
@media (min-width: var(--bp-lg)) { .intro-grid { grid-template-columns: 1.2fr 1fr; align-items: start; } }
.intro-text { font-size: 1.0625rem; color: var(--color-slate); line-height: 1.8; }
.visual-card { background: var(--color-off-white); border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-md); }
.visual-image { width: 100%; height: auto; aspect-ratio: 3/2; object-fit: cover; }
.visual-caption { padding: var(--space-6); }
.visual-title { font-size: 1.125rem; margin-bottom: var(--space-4); }
.visual-list { display: grid; gap: var(--space-2); }
.visual-list li { display: flex; align-items: center; gap: var(--space-3); font-size: 0.9375rem; color: var(--color-slate); }
.visual-list li::before { content: ''; width: 8px; height: 8px; background: var(--color-amber); border-radius: 50%; flex-shrink: 0; }
.link-cta { display: inline-flex; align-items: center; gap: var(--space-2); font-weight: 600; color: var(--color-amber); margin-top: var(--space-4); transition: gap var(--transition-fast); }
.link-cta:hover { gap: var(--space-3); }
.arrow-icon { width: 20px; height: 20px; transition: transform var(--transition-fast); }
.link-cta:hover .arrow-icon { transform: translateX(4px); }

.services-grid { display: grid; gap: var(--space-6); }
@media (min-width: var(--bp-sm)) { .services-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: var(--bp-lg)) { .services-grid { grid-template-columns: repeat(4, 1fr); } }
.service-card { background: var(--color-off-white); padding: var(--space-8); border-radius: var(--radius-lg); transition: transform var(--transition-base), box-shadow var(--transition-base); }
.service-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.service-card-title { font-size: 1.125rem; margin-bottom: var(--space-3); }
.service-card-text { font-size: 0.9375rem; color: var(--color-slate); line-height: 1.7; }
.section-cta { text-align: center; margin-top: var(--space-12); }

.process-preview-grid { display: grid; gap: var(--space-10); }
@media (min-width: var(--bp-lg)) { .process-preview-grid { grid-template-columns: 1.2fr 1fr; align-items: center; } }
.process-text { font-size: 1.0625rem; color: var(--color-slate); line-height: 1.8; }
.process-preview-visual { display: flex; justify-content: center; }
.process-steps { display: flex; gap: var(--space-4); flex-wrap: wrap; justify-content: center; }
.process-step { display: flex; flex-direction: column; align-items: center; gap: var(--space-2); min-width: 80px; }
.step-number { display: flex; align-items: center; justify-content: center; width: 48px; height: 48px; background: var(--color-amber); color: var(--color-white); font-weight: 700; font-size: 1.25rem; border-radius: 50%; }
.step-text { font-size: 0.875rem; font-weight: 600; color: var(--color-navy); text-align: center; }

.faq-preview-grid { display: grid; gap: var(--space-6); }
@media (min-width: var(--bp-md)) { .faq-preview-grid { grid-template-columns: repeat(3, 1fr); } }
.faq-item { background: var(--color-off-white); padding: var(--space-6); border-radius: var(--radius-lg); }
.faq-question { font-size: 1rem; margin-bottom: var(--space-3); }
.faq-answer { font-size: 0.9375rem; color: var(--color-slate); line-height: 1.7; }

.contact-cta-box { background: var(--color-navy); color: var(--color-white); padding: var(--space-12); border-radius: var(--radius-xl); text-align: center; }
@media (min-width: var(--bp-md)) { .contact-cta-box { padding: var(--space-16); } }
.contact-cta-title { font-size: clamp(1.5rem, 4vw, 2rem); margin-bottom: var(--space-4); color: var(--color-white); }
.contact-cta-text { font-size: 1.125rem; color: var(--color-gray-300); max-width: 600px; margin: 0 auto var(--space-8); line-height: 1.7; }
.contact-cta-actions { display: flex; flex-direction: column; gap: var(--space-4); justify-content: center; margin-bottom: var(--space-6); }
@media (min-width: var(--bp-sm)) { .contact-cta-actions { flex-direction: row; } }
.contact-cta-location { font-size: 0.9375rem; color: var(--color-gray-300); }

.site-footer { background: var(--color-navy); color: var(--color-white); padding: var(--space-16) 0 var(--space-8); }
.footer-grid { display: grid; gap: var(--space-10); }
@media (min-width: var(--bp-sm)) { .footer-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: var(--bp-lg)) { .footer-grid { grid-template-columns: 2fr 1fr 1fr 1fr; } }
.footer-logo { font-size: 1.25rem; font-weight: 700; display: block; margin-bottom: var(--space-3); }
.footer-tagline { font-size: 0.9375rem; color: var(--color-gray-300); line-height: 1.7; }
.footer-heading { font-size: 0.875rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em; color: var(--color-gray-300); margin-bottom: var(--space-4); }
.footer-list { display: grid; gap: var(--space-3); }
.footer-list a { font-size: 0.9375rem; color: var(--color-gray-300); transition: color var(--transition-fast); }
.footer-list a:hover { color: var(--color-white); }
.footer-address { font-size: 0.9375rem; color: var(--color-gray-300); line-height: 1.7; }
.footer-address a { color: var(--color-gray-300); text-decoration: underline; }
.footer-address a:hover { color: var(--color-white); }
.service-area-text { font-size: 0.9375rem; color: var(--color-gray-300); line-height: 1.7; }
.footer-bottom { margin-top: var(--space-12); padding-top: var(--space-8); border-top: 1px solid var(--color-navy-light); text-align: center; }
.copyright { font-size: 0.875rem; color: var(--color-gray-300); }

.sticky-mobile-cta { display: flex; align-items: center; justify-content: center; gap: var(--space-2); position: fixed; bottom: 0; left: 0; right: 0; background: var(--color-amber); color: var(--color-white); font-weight: 600; font-size: 1rem; padding: var(--space-4) var(--space-6); padding-bottom: calc(var(--space-4) + env(safe-area-inset-bottom, 0px)); box-shadow: var(--shadow-lg); z-index: 99; }
@media (min-width: var(--bp-lg)) { .sticky-mobile-cta { display: none; } }
.sticky-icon { width: 22px; height: 22px; }

.detail-grid { display: grid; gap: var(--space-10); }
@media (min-width: var(--bp-lg)) { .detail-grid { grid-template-columns: 1.2fr 1fr; align-items: start; } }
.detail-text { font-size: 1.0625rem; color: var(--color-slate); line-height: 1.8; }
.detail-image { width: 100%; height: auto; border-radius: var(--radius-lg); box-shadow: var(--shadow-md); }

.section-services-detailed { background: var(--color-off-white); }
.service-detail-card { background: var(--color-white); border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-md); margin-bottom: var(--space-8); }
.service-detail-card:last-child { margin-bottom: 0; }
.service-detail-header { background: var(--color-navy); color: var(--color-white); padding: var(--space-6) var(--space-8); }
.service-detail-title { font-size: 1.25rem; color: var(--color-white); margin: 0; }
.service-detail-body { padding: var(--space-8); }
.service-detail-text { font-size: 1.0625rem; color: var(--color-slate); line-height: 1.8; margin-bottom: var(--space-4); }
.service-detail-list { display: grid; gap: var(--space-2); margin-top: var(--space-4); }
.service-detail-list li { display: flex; align-items: flex-start; gap: var(--space-3); font-size: 0.9375rem; color: var(--color-slate); }
.service-detail-list li::before { content: '✓'; color: var(--color-amber); font-weight: 700; flex-shrink: 0; }

.brands-grid { display: grid; gap: var(--space-6); }
@media (min-width: var(--bp-sm)) { .brands-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: var(--bp-lg)) { .brands-grid { grid-template-columns: repeat(5, 1fr); } }
.brand-item { background: var(--color-off-white); padding: var(--space-6); border-radius: var(--radius-md); text-align: center; }
.brand-name { font-size: 1.125rem; margin-bottom: var(--space-2); }
.brand-text { font-size: 0.875rem; color: var(--color-slate); line-height: 1.6; }

.section-cta-simple { background: var(--color-off-white); }
.cta-simple-box { max-width: var(--container-narrow); margin: 0 auto; text-align: center; }
.cta-simple-title { margin-bottom: var(--space-4); }
.cta-simple-text { font-size: 1.125rem; color: var(--color-slate); margin-bottom: var(--space-8); line-height: 1.7; }

.problem-card { background: var(--color-off-white); padding: var(--space-8); border-radius: var(--radius-lg); margin-bottom: var(--space-8); }
.problem-card:last-child { margin-bottom: 0; }
@media (min-width: var(--bp-lg)) { .problem-card { display: grid; grid-template-columns: 1.2fr 1fr; gap: var(--space-8); align-items: start; } }
.problem-title { font-size: 1.25rem; margin-bottom: var(--space-4); }
.problem-text { font-size: 1.0625rem; color: var(--color-slate); line-height: 1.8; margin-bottom: var(--space-4); }
.problem-visual { margin-top: var(--space-6); }
@media (min-width: var(--bp-lg)) { .problem-visual { margin-top: 0; } }
.problem-image { width: 100%; height: auto; border-radius: var(--radius-md); box-shadow: var(--shadow-md); }

.signs-grid { display: grid; gap: var(--space-6); }
@media (min-width: var(--bp-sm)) { .signs-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: var(--bp-lg)) { .signs-grid { grid-template-columns: repeat(3, 1fr); } }
.sign-item { background: var(--color-off-white); padding: var(--space-6); border-radius: var(--radius-lg); border-left: 4px solid var(--color-amber); }
.sign-title { font-size: 1.0625rem; margin-bottom: var(--space-2); }
.sign-text { font-size: 0.9375rem; color: var(--color-slate); line-height: 1.7; margin: 0; }

.process-timeline { display: grid; gap: var(--space-8); }
.process-step-card { display: grid; gap: var(--space-6); background: var(--color-off-white); padding: var(--space-8); border-radius: var(--radius-lg); }
@media (min-width: var(--bp-lg)) { .process-step-card { grid-template-columns: auto 1fr; align-items: start; } }
.step-number-large { display: flex; align-items: center; justify-content: center; width: 64px; height: 64px; background: var(--color-amber); color: var(--color-white); font-weight: 700; font-size: 1.75rem; border-radius: 50%; flex-shrink: 0; }
.step-title { font-size: 1.25rem; margin-bottom: var(--space-3); }
.step-text { font-size: 1.0625rem; color: var(--color-slate); line-height: 1.8; margin-bottom: var(--space-4); }

.notes-grid { display: grid; gap: var(--space-6); }
@media (min-width: var(--bp-md)) { .notes-grid { grid-template-columns: repeat(3, 1fr); } }
.note-card { background: var(--color-off-white); padding: var(--space-8); border-radius: var(--radius-lg); }
.note-title { font-size: 1.125rem; margin-bottom: var(--space-3); }
.note-text { font-size: 0.9375rem; color: var(--color-slate); line-height: 1.7; margin: 0; }

.faq-accordion { max-width: var(--container-narrow); margin: 0 auto; }
.faq-item-full { background: var(--color-off-white); border-radius: var(--radius-lg); margin-bottom: var(--space-4); overflow: hidden; }
.faq-question-btn { display: flex; align-items: center; justify-content: space-between; width: 100%; padding: var(--space-6) var(--space-8); text-align: left; background: transparent; font-weight: 600; font-size: 1.0625rem; color: var(--color-navy); transition: background var(--transition-fast); }
.faq-question-btn:hover { background: var(--color-gray-200); }
.faq-question-btn[aria-expanded="true"] { background: var(--color-gray-200); }
.faq-question { margin: 0; font-size: 1.0625rem; }
.faq-chevron { width: 24px; height: 24px; flex-shrink: 0; margin-left: var(--space-4); transition: transform var(--transition-base); }
.faq-question-btn[aria-expanded="true"] .faq-chevron { transform: rotate(180deg); }
.faq-answer-panel { padding: 0 var(--space-8) var(--space-8); display: none; }
.faq-answer-panel[style*="display: block"] { display: block; }
.faq-answer { font-size: 1rem; color: var(--color-slate); line-height: 1.8; margin-bottom: var(--space-4); }
.faq-list { display: grid; gap: var(--space-2); margin-bottom: var(--space-4); }
.faq-list li { font-size: 0.9375rem; color: var(--color-slate); padding-left: var(--space-4); position: relative; }
.faq-list li::before { content: '•'; position: absolute; left: 0; color: var(--color-amber); font-weight: 700; }

.contact-main-grid { display: grid; gap: var(--space-10); }
@media (min-width: var(--bp-lg)) { .contact-main-grid { grid-template-columns: 1fr 1fr; align-items: start; } }
.contact-detail-card { background: var(--color-off-white); padding: var(--space-8); border-radius: var(--radius-lg); margin-bottom: var(--space-6); }
.contact-detail-card:last-child { margin-bottom: 0; }
.contact-detail-title { font-size: 1.125rem; margin-bottom: var(--space-3); }
.contact-detail-text { font-size: 1rem; color: var(--color-slate); line-height: 1.7; margin-bottom: var(--space-4); }
.contact-phone-link { display: inline-flex; align-items: center; gap: var(--space-3); font-size: 1.25rem; font-weight: 700; color: var(--color-amber); padding: var(--space-3) var(--space-4); background: var(--color-white); border-radius: var(--radius-md); transition: background var(--transition-fast); }
.contact-phone-link:hover { background: var(--color-gray-200); }
.contact-icon { width: 24px; height: 24px; }
.contact-phone-number { font-family: monospace; }
.contact-address { font-size: 1.0625rem; color: var(--color-navy); line-height: 1.8; }
.contact-note { font-size: 0.9375rem; color: var(--color-slate-light); margin-top: var(--space-2); }
.service-area-list { font-size: 1rem; color: var(--color-slate); line-height: 1.7; }
.map-container { border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-md); }

.when-grid { display: grid; gap: var(--space-6); }
@media (min-width: var(--bp-sm)) { .when-grid { grid-template-columns: repeat(2, 1fr); } }
.when-card { background: var(--color-off-white); padding: var(--space-6); border-radius: var(--radius-lg); border-top: 4px solid var(--color-amber); }
.when-title { font-size: 1.0625rem; margin-bottom: var(--space-2); }
.when-text { font-size: 0.9375rem; color: var(--color-slate); line-height: 1.7; margin: 0; }

.contact-cta-final-box { max-width: var(--container-narrow); margin: 0 auto; text-align: center; }
.contact-cta-final-title { margin-bottom: var(--space-4); }
.contact-cta-final-text { font-size: 1.125rem; color: var(--color-slate); margin-bottom: var(--space-8); line-height: 1.7; }

a:focus-visible, button:focus-visible { outline: 3px solid var(--color-amber); outline-offset: 3px; }
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; } }