/* ---------------------------------- */
/* --- DESIGN-SYSTEM: Professional Clarity --- */
/* ---------------------------------- */

/* --- TYPOGRAPHY --- */
@import url('https://fonts.googleapis.com/css2?family=Merriweather:wght@700&family=Source+Sans+Pro:wght@400;600&display=swap');

/* --- CSS VARIABLES --- */
:root {
    /* Color Palette */
    --primary: #0f766e;
    --secondary: #14b8a6;
    --accent: #f59e0b;
    --success: #22c55e;
    --background: #f8fafc;
    --surface: #ffffff;
    --card: #f0fdfa;
    --text: #134e4a;
    --muted: #64748b;
    --white: #ffffff;
    --border-color: #e2e8f0;

    /* Typography */
    --font-headings: 'Merriweather', serif;
    --font-body: 'Source Sans Pro', sans-serif;

    /* Spacing & Sizing */
    --container-width: 1140px;
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-xxl: 5rem;
    
    /* UI Elements */
    --border-radius: 4px;
    --box-shadow: 0 4px 12px rgba(15, 118, 110, 0.08);
}

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

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

body {
    font-family: var(--font-body);
    font-size: 1.0625rem;
    line-height: 1.75;
    color: var(--text);
    background-color: var(--background);
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
    font-family: var(--font-headings);
    color: var(--primary);
    line-height: 1.3;
    margin-bottom: var(--spacing-md);
}

h1 { font-size: 2.875rem; }
h2 { font-size: 2rem; text-align: center; margin-bottom: var(--spacing-xl); }
h3 { font-size: 1.25rem; }
h4 { font-size: 1.1rem; }

p { margin-bottom: var(--spacing-md); }
a { color: var(--secondary); text-decoration: none; transition: color 0.2s ease; }
a:hover { color: var(--primary); }
ul, ol { list-style-position: inside; }
strong { font-weight: 600; color: var(--primary); }

.container {
    max-width: var(--container-width);
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--spacing-md);
    padding-right: var(--spacing-md);
}

/* ---------------------------------- */
/* --- HEADER --- */
/* ---------------------------------- */
.site-header {
    background-color: var(--surface);
    border-bottom: 1px solid var(--border-color);
    padding: var(--spacing-sm) 0;
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    font-family: var(--font-headings);
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--primary);
}

.logo:hover { color: var(--text); }

.logo-icon {
    display: inline-block;
    width: 32px;
    height: 32px;
    line-height: 32px;
    text-align: center;
    border-radius: 50%;
    background-color: var(--primary);
    color: var(--white);
    margin-right: var(--spacing-xs);
    font-family: var(--font-body);
    font-weight: 600;
}

.main-nav ul {
    list-style: none;
    display: flex;
    gap: var(--spacing-lg);
}

.main-nav a {
    color: var(--text);
    font-weight: 600;
    padding: var(--spacing-xs) 0;
    position: relative;
}

.main-nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--secondary);
    transition: width 0.3s ease;
}

.main-nav a:hover::after {
    width: 100%;
}

/* ---------------------------------- */
/* --- BUTTONS --- */
/* ---------------------------------- */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius);
    font-weight: 600;
    text-align: center;
    border: none;
    cursor: pointer;
    transition: transform 0.2s ease, background-color 0.2s ease;
}

.btn:hover {
    transform: translateY(-2px);
}

.btn-cta {
    background-color: var(--accent);
    color: var(--white);
}

.btn-cta:hover { background-color: #d97706; }

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

.btn-primary:hover { background-color: #0d645c; }


/* ---------------------------------- */
/* --- SECTIONS & LAYOUT --- */
/* ---------------------------------- */
section {
    padding: var(--spacing-xxl) 0;
}
.card-bg { background-color: var(--card); }
.card-bg-success { background-color: #ecfdf5; }
.surface-bg { background-color: var(--surface); }

.section-intro {
    text-align: center;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    margin-bottom: var(--spacing-xl);
    color: var(--muted);
}

.two-column-layout {
    display: flex;
    gap: var(--spacing-xl);
    align-items: center;
}
.two-column-layout.reverse { flex-direction: row-reverse; }
.two-column-layout .column-left, .two-column-layout .column-right { flex: 1; }
.two-column-layout img { max-width: 100%; height: auto; border-radius: var(--border-radius); }

/* --- HERO SECTION --- */
.hero-section { padding-bottom: var(--spacing-xl); }
.hero-container {
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
}
.hero-text { flex: 1.2; }
.hero-image { flex: 1; text-align: center; }
.hero-image img {
    max-width: 100%;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
}
.subtitle { font-size: 1.125rem; color: var(--muted); }
.disclaimer-note { font-size: 0.875rem; color: var(--muted); margin-top: var(--spacing-md); }

/* --- STATS SECTION --- */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-lg);
    text-align: center;
}
.stat-box {
    background-color: var(--surface);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
}
.stat-value {
    font-family: var(--font-headings);
    font-size: 2.5rem;
    color: var(--secondary);
    display: block;
}
.stat-label {
    color: var(--muted);
    font-size: 0.9rem;
    margin: 0;
}

/* --- CARD UI ELEMENT --- */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}
.card {
    background-color: var(--surface);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    box-shadow: var(--box-shadow);
    border-top: 4px solid var(--secondary);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(15, 118, 110, 0.12);
}
.card h3 { margin-top: 0; margin-bottom: var(--spacing-sm); }
.card p { margin-bottom: 0; color: var(--muted); }

/* --- CHECKLIST & TIP BOX --- */
.checklist {
    list-style: none;
    padding: 0;
}
.checklist li {
    padding-left: 2rem;
    position: relative;
    margin-bottom: var(--spacing-sm);
}
.checklist li::before {
    content: '✓';
    color: var(--success);
    font-weight: bold;
    position: absolute;
    left: 0;
    top: -2px;
    font-size: 1.2rem;
}

.tip-box {
    background-color: #fffbeb;
    border-left: 4px solid var(--accent);
    padding: var(--spacing-md);
    border-radius: 0 var(--border-radius) var(--border-radius) 0;
    margin-top: var(--spacing-lg);
    display: flex;
    align-items: flex-start;
}
.tip-box-light { background-color: var(--surface); }
.tip-icon {
    font-size: 1.5rem;
    margin-right: var(--spacing-sm);
    line-height: 1.5;
}
.tip-box p { margin: 0; }

/* --- INFO BOXES & STEPS --- */
.info-box-grid { display: grid; grid-template-columns: 1fr 1fr; gap: var(--spacing-lg); }
.info-box {
    background-color: var(--surface);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    border-bottom: 3px solid var(--secondary);
}
.info-box h4 { margin-top: 0; }
.steps-container .step {
    display: flex;
    gap: var(--spacing-lg);
    align-items: flex-start;
    margin-bottom: var(--spacing-lg);
}
.step-number {
    flex-shrink: 0;
    width: 50px;
    height: 50px;
    background-color: var(--primary);
    color: var(--white);
    border-radius: 50%;
    display: grid;
    place-items: center;
    font-size: 1.5rem;
    font-family: var(--font-headings);
}
.step-content h3 { margin: 0 0 var(--spacing-xs) 0; }
.step-content p { margin: 0; }

/* --- HIGHLIGHT SECTION --- */
.highlight-section { text-align: center; }
.highlight-section h2 { color: var(--primary); }
.highlight-section p { max-width: 800px; margin-left: auto; margin-right: auto; }

/* --- TABLES --- */
.table-container {
    background-color: var(--surface);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--box-shadow);
}
table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
}
th, td {
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
}
thead {
    background-color: var(--card);
}
th {
    font-family: var(--font-headings);
    color: var(--primary);
}
tbody tr:hover {
    background-color: #f0fdfa;
}
tfoot {
    font-weight: bold;
    background-color: var(--card);
}
.success-text {
    color: var(--success);
    font-weight: 600;
}

/* --- WARNING CARDS --- */
.warning-card { border-top-color: #f87171; }
.warning-card h3 { color: #b91c1c; }

/* --- FAQ ACCORDION --- */
.faq-accordion { max-width: 800px; margin: 0 auto; }
.faq-item {
    background-color: var(--surface);
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-sm);
    box-shadow: var(--box-shadow);
    overflow: hidden;
}
.faq-question {
    width: 100%;
    background: transparent;
    border: none;
    text-align: left;
    padding: var(--spacing-md);
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.faq-question::after {
    content: '+';
    font-size: 1.5rem;
    color: var(--secondary);
    transition: transform 0.3s ease;
}
.faq-item.active .faq-question::after {
    transform: rotate(45deg);
}
.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease-out, padding 0.4s ease;
}
.faq-answer p { padding: 0 var(--spacing-md) var(--spacing-md); margin: 0; color: var(--muted); }

/* --- CONTACT FORM --- */
.contact-info p { margin-bottom: var(--spacing-xs); }
.map-container { margin-top: var(--spacing-lg); }
.contact-form .form-group { margin-bottom: var(--spacing-md); }
.contact-form label { display: block; font-weight: 600; margin-bottom: var(--spacing-xs); }
.contact-form input, .contact-form select, .contact-form textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font-family: var(--font-body);
    font-size: 1rem;
}
.contact-form input:focus, .contact-form select:focus, .contact-form textarea:focus {
    outline: none;
    border-color: var(--secondary);
    box-shadow: 0 0 0 2px rgba(20, 184, 166, 0.3);
}
.checkbox-group { display: flex; align-items: flex-start; }
.checkbox-group input { width: auto; margin-right: var(--spacing-sm); margin-top: 6px; }

/* ---------------------------------- */
/* --- FOOTER --- */
/* ---------------------------------- */
.site-footer-main {
    background-color: var(--primary);
    color: var(--card);
    padding-top: var(--spacing-xl);
}
.footer-container {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-lg);
    padding-bottom: var(--spacing-xl);
}
.footer-logo { color: var(--white); }
.footer-logo .logo-icon { background-color: var(--white); color: var(--primary); }
.footer-column h4 {
    color: var(--secondary);
    font-family: var(--font-headings);
    margin-bottom: var(--spacing-sm);
}
.footer-column ul { list-style: none; padding: 0; }
.footer-column li { margin-bottom: var(--spacing-xs); }
.footer-column a { color: var(--card); }
.footer-column a:hover { color: var(--white); text-decoration: underline; }
.company-details { font-size: 0.875rem; opacity: 0.7; margin-top: var(--spacing-md); }
.footer-disclaimer {
    border-top: 1px solid rgba(255,255,255,0.2);
    padding-top: var(--spacing-lg);
    padding-bottom: var(--spacing-lg);
    text-align: center;
    font-size: 0.8rem;
    opacity: 0.8;
}
.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.2);
    padding: var(--spacing-sm) 0;
    text-align: center;
    font-size: 0.875rem;
}

/* ---------------------------------- */
/* --- ANIMATIONS --- */
/* ---------------------------------- */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}
.animate-on-scroll.is-visible {
    opacity: 1;
    transform: translateY(0);
}

/* ---------------------------------- */
/* --- RESPONSIVE DESIGN --- */
/* ---------------------------------- */
@media (max-width: 992px) {
    h1 { font-size: 2.5rem; }
    h2 { font-size: 1.75rem; }
    
    .stats-grid { grid-template-columns: 1fr 1fr; }
    .two-column-layout, .two-column-layout.reverse { flex-direction: column; }
    .info-box-grid { grid-template-columns: 1fr; }
    .footer-container { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
    .header-container { flex-direction: column; gap: var(--spacing-sm); }
    .main-nav ul { gap: var(--spacing-md); }
    .hero-container { flex-direction: column; text-align: center; }
    .hero-text { order: 2; }
    .hero-image { order: 1; }
    
    .stats-grid { grid-template-columns: 1fr; }
    .footer-container { grid-template-columns: 1fr; text-align: center; }
}