:root {
    --primary: #316B55;
    --primary-soft: #EDF5F1;
    --background: #FCFDFC;
    --foreground: #141E1A;
    --muted: #657A72;
    --border: #DCEAE4;
    --card-bg: #FFFFFF;
    --destructive: #E5534B;
    --success: #29A36D;
    
    --radius: 16px;
    --radius-btn: 12px;
    --shadow: 0 4px 24px rgba(20, 30, 26, 0.04), 0 1px 3px rgba(20, 30, 26, 0.02);
    --shadow-sm: 0 1px 2px rgba(20, 30, 26, 0.03);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--background);
    color: var(--foreground);
    line-height: 1.6;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: color 0.2s ease;
}

h1, h2, h3, h4 {
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--foreground);
    line-height: 1.3;
}

/* Layout Utilities */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.container-sm {
    max-width: 720px;
    margin: 0 auto;
}

.section {
    padding: 80px 0;
}

.section-bg {
    background-color: var(--primary-soft);
}

.section-header {
    max-width: 680px;
    margin: 0 auto 56px;
    text-align: center;
}

.section-title {
    font-size: 24px;
    margin-bottom: 16px;
}

.section-desc {
    color: var(--muted);
    font-size: 16px;
}

/* Grid & Cards */
.grid {
    display: grid;
    gap: 24px;
}

@media (min-width: 768px) {
    .grid { grid-template-columns: repeat(2, 1fr); }
    .section-title { font-size: 28px; }
}

@media (min-width: 1024px) {
    .grid { grid-template-columns: repeat(3, 1fr); }
}

.card {
    background-color: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    box-shadow: var(--shadow-sm);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    height: 100%;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.card-icon {
    width: 48px;
    height: 48px;
    background-color: var(--primary-soft);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    margin-bottom: 20px;
}

.card-title {
    font-size: 18px;
    margin-bottom: 0;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 15px;
    border-radius: var(--radius-btn);
    padding: 12px 24px;
    cursor: pointer;
    transition: all 0.2s ease;
    border: none;
    text-align: center;
}

.btn-primary {
    background-color: var(--primary);
    color: #fff;
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
    background-color: #265443;
    color: #fff;
}

.btn-secondary {
    background-color: transparent;
    color: var(--foreground);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    background-color: var(--primary-soft);
    border-color: var(--primary);
}

.btn-block {
    display: flex;
    width: 100%;
    padding: 14px 24px;
}

/* Navbar */
.navbar {
    border-bottom: 1px solid var(--border);
    background-color: var(--card-bg);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo-container {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
}

.logo-mark {
    width: 28px;
    height: 28px;
    color: var(--primary);
}

.logo-text {
    font-weight: 700;
    font-size: 22px;
    color: var(--foreground);
    letter-spacing: -0.02em;
}

.nav-action {
    padding: 8px 20px;
    font-size: 14px;
}

/* Hero Section */
.hero {
    padding: 100px 0 80px;
    text-align: center;
}

.hero-title {
    font-size: 36px;
    margin-bottom: 24px;
    max-width: 800px;
    margin-inline: auto;
}

@media (min-width: 768px) {
    .hero-title { font-size: 40px; }
}

.hero-subtitle {
    font-size: 18px;
    color: var(--muted);
    margin-bottom: 40px;
    max-width: 640px;
    margin-inline: auto;
}

.hero-actions {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    margin-bottom: 48px;
    flex-wrap: wrap;
}

.hero-microtext {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    color: var(--muted);
    font-size: 14px;
}

.icon-sm {
    width: 16px;
    height: 16px;
    color: var(--primary);
}

/* About / Vision */
.about .section-desc {
    font-size: 16px;
}

/* Contact Section */
.contact-card {
    background-color: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px;
    box-shadow: var(--shadow);
}

@media (min-width: 768px) {
    .contact-card { padding: 48px; }
}

.form-group {
    margin-bottom: 20px;
    text-align: left;
}

.form-group label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--muted);
    margin-bottom: 8px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 12px 16px;
    font-family: inherit;
    font-size: 15px;
    color: var(--foreground);
    background-color: var(--background);
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-soft);
}

.contact-subtext {
    text-align: center;
    margin-top: 24px;
    font-size: 14px;
    color: var(--muted);
}

/* Footer */
.footer {
    border-top: 1px solid var(--border);
    padding: 40px 0;
    background-color: var(--background);
}

.footer-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 24px;
}

@media (min-width: 768px) {
    .footer-container {
        flex-direction: row;
        justify-content: space-between;
    }
}

.footer-brand {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

@media (min-width: 768px) {
    .footer-brand {
        align-items: flex-start;
    }
}

.logo-footer .logo-mark {
    width: 22px;
    height: 20px;
    color: var(--muted);
}

.logo-footer .logo-text {
    font-size: 18px;
    color: var(--muted);
}

.footer-tagline {
    font-size: 14px;
    color: var(--muted);
}

.footer-links {
    display: flex;
    gap: 24px;
}

.footer-links a {
    font-size: 14px;
    color: var(--muted);
}

.footer-links a:hover {
    color: var(--primary);
}

/* Animations */
.fade-up {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-up.visible {
    opacity: 1;
    transform: translateY(0);
}

.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.2s; }
.delay-3 { transition-delay: 0.3s; }

/* Success State for Button */
.btn.success-state {
    background-color: var(--success);
    color: white;
}