:root {
    --color-primary: #3AC0C7;
    --color-primary-dark: #2a9ea4;
    --color-secondary: #1a3a4a;
    --color-text: #333333;
    --color-text-light: #696969;
    --color-white: #ffffff;
    --color-background: #f2f2f2;
    --font-heading: 'EB Garamond', Georgia, serif;
    --font-body: 'Open Sans', Arial, sans-serif;
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 5rem;
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --container-max: 1200px;
    --container-padding: 1.5rem;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body { font-family: var(--font-body); font-size: 1rem; line-height: 1.6; color: var(--color-text); background-color: var(--color-white); }
img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; transition: color var(--transition-fast); }
ul { list-style: none; }

.container { max-width: var(--container-max); margin: 0 auto; padding: 0 var(--container-padding); }
.text-center { text-align: center; }

.btn { display: inline-block; padding: 0.75rem 1.75rem; font-family: var(--font-body); font-size: 0.9rem; font-weight: 500; text-transform: uppercase; letter-spacing: 0.05em; border: none; border-radius: 0; cursor: pointer; transition: all var(--transition-normal); }
.btn-primary { background-color: var(--color-secondary); color: var(--color-white); }
.btn-primary:hover { background-color: #0d2530; }
.btn-accent { background-color: var(--color-primary); color: var(--color-white); }
.btn-accent:hover { background-color: var(--color-primary-dark); }

.header { position: fixed; top: 0; left: 0; right: 0; z-index: 1000; background-color: var(--color-white); box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1); transition: transform 0.3s ease; }
.header.hidden { transform: translateY(-100%); }
.header-container { display: flex; align-items: center; justify-content: space-between; max-width: var(--container-max); margin: 0 auto; padding: 1rem var(--container-padding); }
.logo { display: flex; align-items: center; gap: 0.75rem; }
.logo-image { height: 40px; width: auto; object-fit: contain; }
.logo-text { font-family: var(--font-heading); font-size: 1.5rem; font-weight: 600; color: var(--color-secondary); }
.main-nav { display: flex; align-items: center; }
.nav-menu { display: flex; gap: 2rem; }
.nav-item a { font-size: 0.9rem; font-weight: 500; color: var(--color-text); text-transform: uppercase; letter-spacing: 0.05em; padding: 0.5rem 0; position: relative; }
.nav-item a::after { content: ''; position: absolute; bottom: 0; left: 0; width: 0; height: 2px; background-color: var(--color-primary); transition: width var(--transition-normal); }
.nav-item a:hover::after, .nav-item.active a::after { width: 100%; }
.nav-item.active a { color: var(--color-primary); }
.header-social { display: flex; gap: 1rem; }
.social-link { display: flex; align-items: center; justify-content: center; color: var(--color-text); transition: color var(--transition-fast); }
.social-link:hover { color: var(--color-primary); }

.mobile-menu-toggle { display: none; background: none; border: none; cursor: pointer; padding: 0.5rem; }
.hamburger { display: block; width: 24px; height: 2px; background-color: var(--color-text); position: relative; }
.hamburger::before, .hamburger::after { content: ''; position: absolute; left: 0; width: 24px; height: 2px; background-color: var(--color-text); }
.hamburger::before { top: -7px; }
.hamburger::after { bottom: -7px; }

.page-hero { position: relative; height: 50vh; min-height: 400px; display: flex; align-items: center; justify-content: center; overflow: hidden; margin-top: 60px; }
.hero-image { position: absolute; top: 0; left: 0; width: 100%; height: 100%; }
.hero-image img { width: 100%; height: 100%; object-fit: cover; }
.hero-overlay { position: absolute; top: 0; left: 0; width: 100%; height: 100%; background: linear-gradient(to bottom, rgba(0, 0, 0, 0.3) 0%, rgba(0, 0, 0, 0.5) 100%); }
.hero-content { position: relative; z-index: 1; text-align: center; color: var(--color-white); padding: var(--container-padding); max-width: 800px; }
.hero-title { font-family: var(--font-heading); font-size: 3.5rem; font-weight: 600; margin-bottom: 1rem; text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3); }
.hero-subtitle { font-size: 1.25rem; font-weight: 300; line-height: 1.8; text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.3); }

.section { padding: var(--spacing-xl) 0; }
.section-title { font-family: var(--font-heading); font-size: 2.5rem; font-weight: 600; color: var(--color-secondary); margin-bottom: var(--spacing-md); }
.section-subtitle { font-size: 1.1rem; color: var(--color-text-light); margin-bottom: var(--spacing-lg); max-width: 600px; margin-left: auto; margin-right: auto; }
.section-text { font-size: 1.1rem; color: var(--color-text-light); margin-bottom: var(--spacing-sm); max-width: 700px; }

.mission-section { background-color: var(--color-white); }
.mission-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--spacing-md); }
.mission-card { text-align: center; padding: var(--spacing-md); background-color: var(--color-background); transition: transform var(--transition-normal), box-shadow var(--transition-normal); }
.mission-card:hover { transform: translateY(-5px); box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1); }
.mission-icon { color: var(--color-primary); margin-bottom: var(--spacing-sm); }
.mission-title { font-family: var(--font-heading); font-size: 1.5rem; font-weight: 600; color: var(--color-secondary); margin-bottom: var(--spacing-xs); }
.mission-text { font-size: 0.95rem; color: var(--color-text-light); line-height: 1.7; }

.story-section { background-color: var(--color-background); }
.story-grid { display: grid; grid-template-columns: 1fr 1fr; gap: var(--spacing-lg); align-items: center; }
.story-content .section-title { text-align: left; }
.story-content .section-text { text-align: left; max-width: 100%; }
.story-content .section-text.highlight { color: var(--color-primary); font-weight: 500; font-style: italic; }
.story-image img { width: 100%; height: 100%; object-fit: cover; min-height: 400px; }

.team-section { background-color: var(--color-white); }
.team-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--spacing-md); margin-top: var(--spacing-lg); }
.team-grid.founders-grid { grid-template-columns: repeat(3, 1fr); }
.team-card { background-color: var(--color-white); box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1); overflow: hidden; transition: transform var(--transition-normal), box-shadow var(--transition-normal); }
.team-card:hover { transform: translateY(-5px); box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15); }
.team-image { overflow: hidden; height: 250px; }
.team-image img { width: 100%; height: 100%; object-fit: cover; transition: transform var(--transition-normal); }
.team-card:hover .team-image img { transform: scale(1.05); }
.team-content { padding: var(--spacing-sm); text-align: center; }
.team-name { font-family: var(--font-heading); font-size: 1.25rem; font-weight: 600; color: var(--color-secondary); margin-bottom: 0.25rem; }
.team-role { font-size: 0.85rem; color: var(--color-primary); font-weight: 500; text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: var(--spacing-xs); }
.team-bio { font-size: 0.9rem; color: var(--color-text-light); line-height: 1.6; }
.founder-card .team-content { text-align: left; padding: var(--spacing-md); }
.founder-card .team-bio { margin-bottom: var(--spacing-xs); }
.founder-card .team-bio:last-child { margin-bottom: 0; }

.support-section { background-color: var(--color-background); }
.support-content { max-width: 800px; margin: 0 auto; }
.support-content .section-text { max-width: 100%; }

.donation-form-container { margin-top: var(--spacing-lg); background-color: var(--color-white); padding: var(--spacing-md); box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1); }
.donation-title { font-family: var(--font-heading); font-size: 1.5rem; font-weight: 600; color: var(--color-secondary); text-align: center; margin-bottom: var(--spacing-md); }
.donation-form { display: flex; flex-direction: column; gap: var(--spacing-md); max-width: 400px; margin: 0 auto; }
.amount-input-container { display: flex; align-items: center; justify-content: center; background-color: var(--color-background); border: 3px solid var(--color-primary); padding: var(--spacing-sm); }
.currency-symbol { font-family: var(--font-heading); font-size: 2.5rem; font-weight: 600; color: var(--color-secondary); margin-right: 0.5rem; }
.amount-input { font-family: var(--font-heading); font-size: 2.5rem; font-weight: 600; color: var(--color-secondary); background: transparent; border: none; outline: none; width: 150px; text-align: left; }
.amount-input::placeholder { color: #aaa; }
.amount-input::-webkit-outer-spin-button, .amount-input::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
.amount-input[type=number] { -moz-appearance: textfield; }
.donation-input { padding: 0.75rem 1rem; font-family: var(--font-body); font-size: 0.9rem; border: 1px solid #ddd; background-color: var(--color-white); color: var(--color-text); outline: none; transition: border-color var(--transition-fast); width: 100%; }
.donation-input:focus { border-color: var(--color-primary); }
.donor-info { display: flex; flex-direction: column; gap: var(--spacing-sm); }
.privacy-checkbox { display: flex; align-items: center; cursor: pointer; user-select: none; font-size: 0.9rem; color: var(--color-text); }
.privacy-checkbox input { display: none; }
.checkmark { width: 20px; height: 20px; border: 2px solid var(--color-secondary); margin-right: 0.75rem; flex-shrink: 0; position: relative; transition: all var(--transition-fast); }
.privacy-checkbox input:checked + .checkmark { background-color: var(--color-primary); border-color: var(--color-primary); }
.checkmark::after { content: ''; position: absolute; display: none; left: 6px; top: 2px; width: 5px; height: 10px; border: solid white; border-width: 0 2px 2px 0; transform: rotate(45deg); }
.privacy-checkbox input:checked + .checkmark::after { display: block; }
.checkbox-label { line-height: 1.4; }
.card-details { display: flex; flex-direction: column; gap: var(--spacing-sm); }
.card-number { letter-spacing: 0.1em; }
.card-row { display: flex; gap: var(--spacing-sm); }
.card-expiry { flex: 1; }
.card-cvv { width: 100px; flex-shrink: 0; }
.donation-btn { width: 100%; }

.stats-section { background-color: var(--color-secondary); color: var(--color-white); padding: var(--spacing-lg) 0; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--spacing-md); text-align: center; }
.stat-item { padding: var(--spacing-sm); }
.stat-number { font-family: var(--font-heading); font-size: 3rem; font-weight: 700; display: block; margin-bottom: 0.5rem; color: var(--color-primary); }
.stat-label { font-size: 0.9rem; text-transform: uppercase; letter-spacing: 0.1em; opacity: 0.9; }

.cta-section { background-color: var(--color-primary); color: var(--color-white); text-align: center; }
.cta-content { max-width: 600px; margin: 0 auto; }
.cta-title { font-family: var(--font-heading); font-size: 2.5rem; font-weight: 600; margin-bottom: var(--spacing-sm); }
.cta-text { font-size: 1.1rem; opacity: 0.9; margin-bottom: var(--spacing-md); }
.cta-section .btn-accent { background-color: var(--color-secondary); }
.cta-section .btn-accent:hover { background-color: #0d2530; }

.footer { background-color: #1a1a1a; color: var(--color-white); padding: var(--spacing-xl) 0 var(--spacing-md); }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 2fr; gap: var(--spacing-lg); margin-bottom: var(--spacing-lg); }
.footer-logo .logo-text { color: var(--color-white); font-size: 1.75rem; }
.footer-description { font-size: 0.9rem; color: rgba(255, 255, 255, 0.7); margin-top: var(--spacing-sm); line-height: 1.7; }
.footer-title { font-family: var(--font-heading); font-size: 1.25rem; font-weight: 600; margin-bottom: var(--spacing-sm); color: var(--color-primary); }
.footer-menu li { margin-bottom: 0.5rem; }
.footer-menu a { font-size: 0.9rem; color: rgba(255, 255, 255, 0.7); transition: color var(--transition-fast); }
.footer-menu a:hover { color: var(--color-primary); }
.footer-contact p { font-size: 0.9rem; color: rgba(255, 255, 255, 0.7); margin-bottom: 0.5rem; }
.footer-newsletter p { font-size: 0.9rem; color: rgba(255, 255, 255, 0.7); margin-bottom: var(--spacing-sm); }
.newsletter-form { display: flex; flex-direction: column; gap: 0.75rem; }
.newsletter-input { padding: 0.75rem 1rem; font-family: var(--font-body); font-size: 0.9rem; border: 1px solid rgba(255, 255, 255, 0.2); background-color: rgba(255, 255, 255, 0.1); color: var(--color-white); outline: none; transition: border-color var(--transition-fast); }
.newsletter-input::placeholder { color: rgba(255, 255, 255, 0.5); }
.newsletter-input:focus { border-color: var(--color-primary); }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; padding-top: var(--spacing-md); border-top: 1px solid rgba(255, 255, 255, 0.1); }
.footer-social { display: flex; gap: 1rem; }
.footer-social .social-link { color: rgba(255, 255, 255, 0.7); }
.footer-social .social-link:hover { color: var(--color-primary); }
.copyright { font-size: 0.85rem; color: rgba(255, 255, 255, 0.5); }

@media (max-width: 992px) {
    .team-grid { grid-template-columns: repeat(2, 1fr); }
    .team-grid.founders-grid { grid-template-columns: repeat(2, 1fr); }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    :root { --spacing-xl: 3rem; }
    .mobile-menu-toggle { display: block; z-index: 1001; }
    .nav-menu { position: fixed; top: 0; right: -100%; width: 100%; height: 100vh; background-color: var(--color-white); flex-direction: column; justify-content: center; align-items: center; gap: 2rem; transition: right var(--transition-normal); }
    .nav-menu.active { right: 0; }
    .nav-item a { font-size: 1.25rem; }
    .header-social { display: none; }
    .page-hero { margin-top: 60px; height: 40vh; }
    .hero-title { font-size: 2.5rem; }
    .hero-subtitle { font-size: 1rem; }
    .mission-grid { grid-template-columns: 1fr; }
    .story-grid { grid-template-columns: 1fr; }
    .story-image { order: -1; }
    .story-content .section-title, .story-content .section-text { text-align: center; }
    .team-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; text-align: center; }
    .footer-bottom { flex-direction: column; gap: 1rem; }
}

@media (max-width: 480px) {
    .hero-title { font-size: 2rem; }
    .section-title { font-size: 1.75rem; }
    .cta-title { font-size: 1.75rem; }
    .stat-number { font-size: 2.5rem; }
    .stats-grid { grid-template-columns: 1fr 1fr; }
    .btn { width: 100%; text-align: center; }
    .newsletter-form .btn { width: 100%; }
    .amount-input-container { padding: var(--spacing-xs); }
    .currency-symbol { font-size: 2rem; }
    .amount-input { font-size: 2rem; width: 120px; }
    .card-row { flex-direction: column; }
    .card-cvv { width: 100%; }
}