/* 
   Tech Help at Home - Stylesheet
   Refactored for Fluid Responsiveness, High Contrast, and Accessibility
*/

/* --- CSS VARIABLES & THEME --- */
:root {
    /* Colors */
    --c-navy: #0A192F;
    --c-blue: #0066CC;
    --c-blue-hover: #0052a3;
    --c-light-blue: #E8F0FE;
    --c-white: #FFFFFF;
    --c-bg-main: #FFFFFF;
    --c-bg-light: #F8FAFC;
    --c-text-main: #334155;
    --c-text-dark: #0F172A;
    --c-border: #E2E8F0;
    --c-success: #10B981;

    /* Fluid Typography - Scales smoothly between mobile and desktop */
    --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    --font-size-base: clamp(16px, 0.9rem + 0.5vw, 18px);
    --h1-size: clamp(2rem, 4vw + 1rem, 3.5rem);
    --h2-size: clamp(1.75rem, 3vw + 1rem, 2.5rem);
    --h3-size: clamp(1.25rem, 2vw + 1rem, 1.75rem);
    --line-height: 1.6;

    /* Fluid Layout & Spacing */
    --container-width: 1100px;
    --spacing-sm: clamp(0.5rem, 1vw, 0.75rem);
    --spacing-md: clamp(1rem, 2vw, 1.5rem);
    --spacing-lg: clamp(1.5rem, 4vw, 3rem);
    --spacing-xl: clamp(3rem, 6vw, 5rem);
    
    /* Effects */
    --radius: 12px;
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.05);
    --shadow-md: 0 10px 20px rgba(10, 25, 47, 0.08);
    --shadow-hover: 0 15px 30px rgba(10, 25, 47, 0.12);
    --transition: all 0.3s ease;
}

/* --- RESET & BASE STYLES --- */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-size: 100%;
}

body {
    font-family: var(--font-family);
    color: var(--c-text-main);
    background-color: var(--c-bg-main);
    font-size: var(--font-size-base);
    line-height: var(--line-height);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
    color: var(--c-text-dark);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
}

h1 { font-size: var(--h1-size); }
h2 { font-size: var(--h2-size); }
h3 { font-size: var(--h3-size); }

a {
    color: var(--c-blue);
    text-decoration: none;
    transition: var(--transition);
}
a:hover {
    color: var(--c-blue-hover);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
    border-radius: var(--radius);
    object-fit: cover;
}

ul {
    list-style: none;
}

/* --- UTILITIES --- */
.container {
    width: min(100% - 2rem, var(--container-width));
    margin: 0 auto;
}

.text-center { text-align: center; }
.text-left { text-align: left; }
.mt-2 { margin-top: var(--spacing-md); }
.mt-4 { margin-top: var(--spacing-lg); }
.mb-4 { margin-bottom: var(--spacing-lg); }
.bg-light { background-color: var(--c-bg-light); }
.bg-primary { background-color: var(--c-blue); color: var(--c-white); }
.bg-navy { background-color: var(--c-navy); color: var(--c-white); }
.text-white { color: var(--c-white) !important; }
.text-navy { color: var(--c-navy) !important; }
.text-large { font-size: clamp(1.1rem, 2vw + 0.5rem, 1.25rem); font-weight: bold; }
.text-small { font-size: clamp(0.85rem, 1vw + 0.5rem, 0.95rem); }
.strong-text { font-weight: 600; color: var(--c-text-dark); }
.text-highlight { color: var(--c-blue); }

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

.section-header {
    max-width: 700px;
    margin: 0 auto var(--spacing-xl);
}
.section-header .subtitle {
    font-size: clamp(1rem, 2vw + 0.5rem, 1.2rem);
    color: var(--c-text-main);
}

/* --- BUTTONS --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: clamp(0.5rem, 1.5vw, 0.75rem) clamp(1.2rem, 3vw, 1.5rem);
    border-radius: 50px;
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    border: 2px solid transparent;
    transition: var(--transition);
    font-size: 1rem;
    line-height: 1.4;
}

.btn-primary { background-color: var(--c-blue); color: var(--c-white); box-shadow: var(--shadow-sm); }
.btn-primary:hover { background-color: var(--c-blue-hover); color: var(--c-white); transform: translateY(-2px); box-shadow: var(--shadow-md); }
.btn-outline { background-color: transparent; color: var(--c-blue); border-color: var(--c-blue); }
.btn-outline:hover { background-color: var(--c-light-blue); }
.btn-white { background-color: var(--c-white); color: var(--c-blue); }
.btn-white:hover { background-color: var(--c-light-blue); }
.btn-outline-white { background-color: transparent; color: var(--c-white); border-color: var(--c-white); }
.btn-outline-white:hover { background-color: rgba(255,255,255,0.1); }
.btn-large { padding: clamp(0.75rem, 2vw, 1rem) clamp(1.5rem, 4vw, 2rem); font-size: clamp(1rem, 2vw + 0.5rem, 1.1rem); }
.btn-sm { padding: 0.5rem 1rem; font-size: 0.9rem; }
.btn-full { width: 100%; }
.btn-text { background: transparent; color: var(--c-blue); padding: 0; font-weight: 600; }
.btn-text:hover { color: var(--c-blue-hover); text-decoration: underline; }

/* Focus visibility for accessibility */
button:focus-visible, a:focus-visible, input:focus-visible, textarea:focus-visible {
    outline: 3px solid var(--c-blue);
    outline-offset: 2px;
}

/* --- HEADER & NAVIGATION --- */
.site-header {
    background-color: var(--c-white);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: var(--transition);
}

.site-header.scrolled { box-shadow: var(--shadow-md); }

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    min-height: 80px;
    padding-top: var(--spacing-sm);
    padding-bottom: var(--spacing-sm);
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--c-navy);
}
.logo-icon { width: 36px; height: 36px; color: var(--c-blue); flex-shrink: 0; }
.logo-text {
    font-size: clamp(1.2rem, 3vw, 1.5rem);
    font-weight: 700;
    letter-spacing: -0.5px;
    white-space: nowrap;
}

.main-nav .nav-links {
    display: flex;
    gap: clamp(1rem, 2vw, 1.5rem);
    align-items: center;
    flex-wrap: wrap;
}
.nav-link { color: var(--c-text-main); font-weight: 500; white-space: nowrap; }
.nav-link:hover, .nav-link.active { color: var(--c-blue); }
.mobile-cta-item { display: none; }
.hamburger { display: none; background: none; border: none; cursor: pointer; padding: 5px; }
.hamburger .bar { display: block; width: 25px; height: 3px; margin: 5px auto; background-color: var(--c-navy); transition: var(--transition); }

/* --- HERO SECTION --- */
.hero-section { background-color: var(--c-bg-light); padding: var(--spacing-xl) 0; overflow: hidden; }

.hero-container {
    display: grid;
    /* Intrinsic Grid: Automatically switches to 1 column when space drops below 450px */
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 450px), 1fr));
    gap: var(--spacing-xl);
    align-items: center;
}

.hero-title { font-size: clamp(1rem, 2vw + 0.5rem, 1.25rem); color: var(--c-blue); text-transform: uppercase; letter-spacing: 1px; margin-bottom: 0.5rem; }
.hero-subtitle { font-size: var(--h1-size); line-height: 1.1; margin-bottom: var(--spacing-md); color: var(--c-navy); text-wrap: balance; }
.hero-text { font-size: clamp(1rem, 2vw + 0.5rem, 1.2rem); margin-bottom: var(--spacing-lg); }
.hero-trust {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    margin-bottom: var(--spacing-lg);
    font-weight: 500;
    color: var(--c-text-dark);
    background: white;
    padding: clamp(0.75rem, 2vw, 1rem);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    border-left: 4px solid var(--c-blue);
    width: fit-content;
}
.icon-heart { width: 24px; height: 24px; color: #E11D48; flex-shrink: 0; }
.hero-buttons { display: flex; gap: 1rem; flex-wrap: wrap; }
.hero-image-wrapper { position: relative; border-radius: 20px; box-shadow: var(--shadow-md); overflow: hidden; }

/* --- SERVICES SECTION --- */
.services-grid {
    display: grid;
    /* Intrinsic Grid: Cards scale fluidly and determine their own columns */
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 300px), 1fr));
    gap: var(--spacing-lg);
}

.service-card {
    background: var(--c-white);
    padding: var(--spacing-lg);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border: 1px solid var(--c-border);
    height: 100%;
    display: flex;
    flex-direction: column;
}
.service-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-5px); border-color: var(--c-light-blue); }
.service-icon-wrapper { width: 60px; height: 60px; background-color: var(--c-light-blue); border-radius: 50%; display: flex; align-items: center; justify-content: center; margin-bottom: 1.5rem; }
.service-icon { width: 30px; height: 30px; color: var(--c-blue); }
.service-card h3 { color: var(--c-navy); margin-bottom: 1rem; }
.service-card p { margin-bottom: 1.5rem; flex-grow: 1; }

.service-list { margin-bottom: 1.5rem; }
.service-list li { position: relative; padding-left: 1.5rem; margin-bottom: 0.5rem; font-size: clamp(0.9rem, 1.5vw + 0.25rem, 0.95rem); }
.service-list li::before { content: "•"; position: absolute; left: 0; color: var(--c-blue); font-size: 1.2rem; line-height: 1; }

/* --- SPLIT LAYOUT (Why Us & Senior Friendly) --- */
.split-layout {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 400px), 1fr));
    gap: var(--spacing-xl);
    align-items: center;
}

.check-list li { display: flex; align-items: flex-start; gap: 10px; margin-bottom: 1rem; font-weight: 500; }
.check-list li svg { width: 20px; height: 20px; color: var(--c-blue); flex-shrink: 0; margin-top: 3px; stroke-width: 3px; }

.handwritten-quote { font-family: "Georgia", serif; font-style: italic; font-size: clamp(1.1rem, 3vw, 1.4rem); color: var(--c-blue); margin-top: var(--spacing-lg); padding: var(--spacing-lg); background: var(--c-light-blue); border-radius: var(--radius); text-align: center; }

.senior-friendly-card { padding: var(--spacing-lg); border-radius: var(--radius); box-shadow: var(--shadow-md); height: 100%; }
.senior-friendly-card h3 { color: var(--c-white); margin-bottom: 1rem; }
.senior-badges { display: flex; flex-wrap: wrap; gap: 10px; margin-top: var(--spacing-lg); }
.badge { background: rgba(255,255,255,0.1); border: 1px solid rgba(255,255,255,0.2); padding: 0.5rem 1rem; border-radius: 50px; font-size: clamp(0.85rem, 1.5vw + 0.25rem, 0.9rem); font-weight: 500; white-space: nowrap; }

/* --- PRICING SECTION --- */
.pricing-card { width: min(100%, 500px); margin: 0 auto; background: var(--c-white); border-radius: var(--radius); box-shadow: var(--shadow-md); overflow: hidden; border: 2px solid var(--c-blue); }
.price-header { background: var(--c-navy); color: var(--c-white); padding: var(--spacing-lg); text-align: center; }
.price-amount { display: flex; justify-content: center; align-items: baseline; gap: 5px; font-size: clamp(2.5rem, 6vw, 4rem); font-weight: 800; line-height: 1; }
.price-period { font-size: clamp(1rem, 2vw + 0.5rem, 1.2rem); font-weight: 500; opacity: 0.9; }
.price-length { margin-top: 1rem; font-size: clamp(0.9rem, 2vw + 0.25rem, 1.1rem); background: rgba(255,255,255,0.2); display: inline-block; padding: 0.25rem 1rem; border-radius: 20px; }
.price-body { padding: var(--spacing-lg); }
.price-body .check-list { text-align: left; }
.price-footer { padding: 0 var(--spacing-lg) var(--spacing-lg); text-align: center; }
.price-note { margin-top: 1rem; font-size: 0.9rem; color: var(--c-text-main); }

/* --- HOW IT WORKS (Timeline) --- */
.timeline { width: min(100%, 800px); margin: 0 auto; position: relative; }
.timeline::before { content: ''; position: absolute; left: clamp(20px, 4vw, 30px); top: 0; height: 100%; width: 2px; background: var(--c-blue); opacity: 0.3; }
.timeline-step { display: flex; gap: clamp(1rem, 3vw, 2rem); margin-bottom: var(--spacing-lg); position: relative; }
.timeline-step:last-child { margin-bottom: 0; }
.step-number { width: clamp(40px, 8vw, 60px); height: clamp(40px, 8vw, 60px); background: var(--c-blue); color: var(--c-white); border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: clamp(1.2rem, 3vw, 1.5rem); font-weight: bold; flex-shrink: 0; box-shadow: 0 0 0 8px var(--c-bg-main), 0 0 0 10px rgba(0,102,204,0.1); z-index: 2; }
.step-content h3 { margin-bottom: 0.5rem; padding-top: clamp(0, 1vw, 10px); }

/* --- COMMON PROBLEMS --- */
.problems-grid { display: flex; flex-wrap: wrap; gap: 1rem; justify-content: center; }
.problem-card { background: var(--c-white); padding: 1rem 1.5rem; border-radius: 50px; box-shadow: var(--shadow-sm); border: 1px solid var(--c-border); font-weight: 500; font-size: clamp(0.85rem, 1.5vw + 0.25rem, 0.95rem); transition: var(--transition); cursor: default; }
.problem-card:hover { border-color: var(--c-blue); transform: translateY(-2px); box-shadow: var(--shadow-md); }

/* --- TESTIMONIALS --- */
.testimonials-section { background: var(--c-navy); color: var(--c-white); text-align: center; }
.testimonial-container { width: min(100%, 800px); margin: 0 auto; }
.stars { color: #FBBF24; display: flex; justify-content: center; gap: 5px; margin-bottom: 1.5rem; }
.stars svg { width: clamp(20px, 4vw, 28px); height: clamp(20px, 4vw, 28px); }
.testimonial-text { font-size: clamp(1.25rem, 3vw + 0.5rem, 2rem); font-style: italic; line-height: 1.4; margin-bottom: 2rem; text-wrap: balance; }
.testimonial-author { font-size: clamp(1rem, 2vw + 0.5rem, 1.2rem); font-weight: bold; font-style: normal; color: var(--c-light-blue); }

/* --- CONTACT SECTION --- */
.contact-method { display: flex; align-items: flex-start; gap: 1rem; margin-bottom: var(--spacing-lg); }
.icon-wrapper { width: 50px; height: 50px; background: var(--c-light-blue); color: var(--c-blue); border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.icon-wrapper svg { width: 24px; height: 24px; }
.icon-wrapper.shield { background: #DCFCE7; color: var(--c-success); }
.contact-link { color: var(--c-text-dark); word-break: break-word; }
.contact-link:hover { color: var(--c-blue); }

.trust-badge, .service-area-badge { background: var(--c-white); padding: var(--spacing-lg); border-radius: var(--radius); border: 1px solid var(--c-border); display: flex; gap: 1rem; align-items: flex-start; flex-wrap: wrap; }
.service-area-badge { flex-direction: column; gap: 0.5rem; }

.contact-form-container { background: var(--c-white); padding: var(--spacing-lg); border-radius: var(--radius); box-shadow: var(--shadow-md); border-top: 5px solid var(--c-blue); }
.form-group { margin-bottom: 1.5rem; width: 100%; }
.form-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 250px), 1fr)); gap: 1rem; }
label { display: block; margin-bottom: 0.5rem; font-weight: 600; color: var(--c-text-dark); }
input, textarea, select { width: 100%; padding: 0.8rem 1rem; border: 1px solid var(--c-border); border-radius: 8px; font-family: inherit; font-size: 1rem; transition: var(--transition); max-width: 100%; }
input:focus, textarea:focus, select:focus { outline: none; border-color: var(--c-blue); box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1); }
.form-success { text-align: center; padding: 2rem 0; }
.form-success svg { width: 60px; height: 60px; margin-bottom: 1rem; }

/* --- FAQ SECTION --- */
.faq-accordion { width: min(100%, 800px); margin: 0 auto; }
.faq-item { border-bottom: 1px solid var(--c-border); margin-bottom: 1rem; }
.faq-question { width: 100%; text-align: left; background: none; border: none; padding: 1rem 0; font-size: clamp(1rem, 2vw + 0.5rem, 1.2rem); font-weight: 600; color: var(--c-text-dark); display: flex; justify-content: space-between; align-items: center; cursor: pointer; gap: 1rem; }
.faq-icon { font-size: 1.5rem; color: var(--c-blue); transition: transform 0.3s ease; flex-shrink: 0; }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.3s ease; }
.faq-answer p { padding-bottom: 1.5rem; color: var(--c-text-main); }
.faq-question[aria-expanded="true"] .faq-icon { transform: rotate(45deg); }

/* --- FOOTER --- */
.site-footer { background: var(--c-navy); color: var(--c-white); padding: var(--spacing-xl) 0 1rem; }
.footer-container { 
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}
.footer-logo-col { flex: 2 1 min(100%, 300px); }
.footer-col { flex: 1 1 min(100%, 200px); }
.footer-logo { font-size: clamp(1.25rem, 3vw, 1.5rem); margin-bottom: 1rem; color: var(--c-white); }
.footer-col h4 { color: var(--c-light-blue); margin-bottom: 1.5rem; text-transform: uppercase; letter-spacing: 1px; font-size: 1rem; }
.footer-links li, .footer-contact li { margin-bottom: 0.8rem; word-break: break-word; }
.footer-links a, .footer-contact a { color: #cbd5e1; }
.footer-links a:hover, .footer-contact a:hover { color: var(--c-white); text-decoration: underline; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.1); padding-top: 1.5rem; font-size: 0.9rem; color: #94a3b8; text-align: center; }

/* --- BACK TO TOP --- */
.back-to-top { position: fixed; bottom: clamp(15px, 4vw, 30px); right: clamp(15px, 4vw, 30px); background: var(--c-blue); color: var(--c-white); width: 50px; height: 50px; border-radius: 50%; border: none; display: flex; align-items: center; justify-content: center; cursor: pointer; box-shadow: var(--shadow-md); opacity: 0; visibility: hidden; transition: var(--transition); z-index: 99; }
.back-to-top.visible { opacity: 1; visibility: visible; }
.back-to-top:hover { background: var(--c-navy); transform: translateY(-3px); }
.back-to-top svg { width: 24px; height: 24px; }

/* --- ANIMATIONS --- */
.fade-in { opacity: 0; transform: translateY(30px); transition: opacity 0.8s ease, transform 0.8s ease; }
.fade-in.visible { opacity: 1; transform: translateY(0); }
.delay-1 { transition-delay: 0.2s; }
.delay-2 { transition-delay: 0.4s; }

@media (prefers-reduced-motion: reduce) {
    * { animation: none !important; transition: none !important; }
    .fade-in { opacity: 1; transform: none; }
}

/* --- STRUCTURAL MEDIA QUERY FOR NAVIGATION ONLY --- */
/* The header navigation changes behavior to a mobile toggle format at 900px to prevent visual crowding */
@media (max-width: 900px) {
    .desktop-only { display: none; }
    .hamburger { display: block; }
    .hamburger.is-active .bar:nth-child(2) { opacity: 0; }
    .hamburger.is-active .bar:nth-child(1) { transform: translateY(8px) rotate(45deg); }
    .hamburger.is-active .bar:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

    .main-nav {
        position: fixed;
        top: 80px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 80px);
        background: var(--c-white);
        flex-direction: column;
        transition: 0.4s;
        box-shadow: var(--shadow-md);
        padding: var(--spacing-lg);
        overflow-y: auto;
    }
    .main-nav.active { left: 0; }
    .main-nav .nav-links { flex-direction: column; width: 100%; gap: 2rem; }
    .mobile-cta-item { display: block; width: 100%; text-align: center; margin-top: 1rem; }
    .mobile-cta { display: block; width: 100%; padding: 1rem; }
}