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

:root {
    /* Colors */
    --color-primary: #78716C;
    --color-on-primary: #FFFFFF;
    --color-secondary: #92400E;
    --color-accent: #D97706;
    --color-background: #FFFBEB;
    --color-foreground: #0F172A;
    --color-muted: #F6F6F6;
    --color-border: #EEEDED;
    --color-destructive: #DC2626;
    --color-ring: #78716C;
    
    /* Typography */
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Work Sans', sans-serif;
    
    /* Spacing */
    --section-gap: 48px;
    --container-padding: 24px;
    
    /* Transitions */
    --transition-fast: 200ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 300ms ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    color: var(--color-foreground);
    background-color: var(--color-background);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
    width: 100%;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--container-padding);
    width: 100%;
}

.section {
    padding: 80px 0;
    scroll-snap-align: start;
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 48px;
    padding: 0 16px;
}

.section-tag {
    display: inline-block;
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--color-accent);
    position: relative;
    padding: 4px 16px;
    border: 1px solid var(--color-accent);
    border-radius: 20px;
    margin-bottom: 16px;
}

.section-title {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 20px;
}

.title-accent {
    color: var(--color-accent);
    display: block;
}

.section-desc {
    font-size: 1.125rem;
    color: var(--color-primary);
    max-width: 600px;
    margin: 0 auto;
}

/* ===== BUTTONS ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 1rem;
    padding: 14px 28px;
    border-radius: 12px;
    border: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
    line-height: 1;
}

.btn:focus-visible {
    outline: 3px solid var(--color-ring);
    outline-offset: 2px;
}

.btn-primary {
    background: var(--color-accent);
    color: var(--color-on-primary);
    border-color: var(--color-accent);
}

.btn-primary:hover {
    background: #B86506;
    border-color: #B86506;
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(217, 119, 6, 0.3);
}

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

.btn-secondary:hover {
    background: #7A340C;
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(146, 64, 14, 0.3);
}

.btn-outline {
    background: transparent;
    color: var(--color-foreground);
    border-color: var(--color-border);
}

.btn-outline:hover {
    background: var(--color-muted);
    border-color: var(--color-primary);
}

.btn-lg {
    padding: 16px 32px;
    font-size: 1.125rem;
}

.btn-nav {
    background: var(--color-accent);
    color: var(--color-on-primary);
    padding: 10px 24px;
    border-radius: 8px;
    font-weight: 600;
    text-decoration: none;
    transition: all var(--transition-base);
}

.btn-nav:hover {
    background: #B86506;
    transform: translateY(-1px);
}

/* ===== HERO ===== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 40%;
    z-index: 0;
}

.hero-wave {
    width: 100%;
    height: 100%;
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
    position: relative;
    z-index: 10;
    flex-wrap: wrap;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--color-primary);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
    list-style: none;
}

.nav-links a {
    font-family: var(--font-heading);
    font-weight: 500;
    color: var(--color-foreground);
    text-decoration: none;
    transition: color var(--transition-base);
    font-size: 0.95rem;
}

.nav-links a:hover {
    color: var(--color-accent);
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--color-foreground);
    padding: 8px;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 1;
    padding: 40px 0;
}

.hero-title {
    font-family: var(--font-heading);
}

.hero-sub {
    display: block;
    font-size: 1.125rem;
    font-weight: 500;
    color: var(--color-accent);
    text-transform: uppercase;
    letter-spacing: 3px;
    margin-bottom: 8px;
}

.hero-main {
    font-size: 4rem;
    font-weight: 700;
    line-height: 1.1;
    display: block;
    color: var(--color-foreground);
}

.hero-cta-line {
    display: block;
    font-size: 2.5rem;
    font-weight: 300;
    color: var(--color-primary);
    margin-top: 4px;
}

.hero-desc {
    font-size: 1.125rem;
    color: var(--color-primary);
    margin: 24px 0 32px;
    max-width: 500px;
}

.hero-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.water-drop-group {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.water-drop {
    animation: float 4s ease-in-out infinite;
}

.ripple-group {
    display: flex;
    gap: 8px;
    margin-top: 16px;
}

.ripple {
    display: block;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    border: 2px solid var(--color-primary);
    animation: ripple 2s ease-in-out infinite;
}

.ripple.delay-1 {
    animation-delay: 0.5s;
}

.ripple.delay-2 {
    animation-delay: 1s;
}

.scroll-indicator {
    position: absolute;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: var(--color-primary);
    font-size: 0.8rem;
    font-family: var(--font-heading);
    animation: bounce 2s ease-in-out infinite;
    z-index: 2;
}

/* ===== PROBLEM SECTION ===== */
.problem {
    background: linear-gradient(180deg, var(--color-background) 0%, var(--color-muted) 100%);
}

.problem-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.problem-card {
    background: var(--color-on-primary);
    border-radius: 16px;
    padding: 32px 24px;
    text-align: center;
    border: 1px solid var(--color-border);
    transition: all var(--transition-slow);
    opacity: 0;
    transform: translateY(30px);
}

.problem-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.problem-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 16px 48px rgba(0,0,0,0.08);
    border-color: var(--color-accent);
}

.card-icon {
    margin-bottom: 16px;
}

.card-stat {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-accent);
    margin-bottom: 8px;
}

.stat-number {
    font-size: inherit;
}

.stat-unit {
    font-size: 1rem;
    font-weight: 500;
    color: var(--color-primary);
    margin-left: 4px;
}

.problem-card h3 {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.problem-card p {
    font-size: 0.9rem;
    color: var(--color-primary);
    line-height: 1.5;
}

/* ===== ABOUT SECTION ===== */
.about {
    background: var(--color-muted);
    position: relative;
}

.about-bg {
    position: absolute;
    top: 0;
    right: 0;
    width: 300px;
    height: 300px;
    opacity: 0.5;
    pointer-events: none;
}

.about-content {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-text {
    position: relative;
    z-index: 1;
}

.about-desc {
    font-size: 1.125rem;
    color: var(--color-primary);
    margin: 24px 0;
    line-height: 1.7;
}

.about-values {
    display: grid;
    gap: 16px;
}

.value-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    padding: 16px;
    background: var(--color-on-primary);
    border-radius: 12px;
    border: 1px solid var(--color-border);
}

.value-item h4 {
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 1.1rem;
    margin-bottom: 4px;
}

.value-item p {
    font-size: 0.9rem;
    color: var(--color-primary);
}

.about-stats {
    display: grid;
    gap: 24px;
}

.stat-block {
    background: var(--color-on-primary);
    border-radius: 16px;
    padding: 32px;
    text-align: center;
    border: 1px solid var(--color-border);
}

.stat-big {
    display: block;
    font-family: var(--font-heading);
    font-size: 3rem;
    font-weight: 700;
    color: var(--color-accent);
}

.stat-label {
    font-family: var(--font-heading);
    font-weight: 500;
    color: var(--color-primary);
    margin-top: 4px;
    display: block;
}

/* ===== PROGRAM SECTION ===== */
.program {
    background: var(--color-background);
}

.program-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.program-card {
    background: var(--color-on-primary);
    border-radius: 20px;
    overflow: hidden;
    border: 1px solid var(--color-border);
    transition: all var(--transition-slow);
    cursor: pointer;
}

.program-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 16px 48px rgba(0,0,0,0.08);
}

.program-image {
    position: relative;
    overflow: hidden;
}

.program-overlay {
    position: absolute;
    inset: 0;
    background: rgba(217, 119, 6, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition-slow);
}

.program-card:hover .program-overlay {
    opacity: 1;
}

.program-overlay span {
    font-family: var(--font-heading);
    font-weight: 600;
    color: var(--color-on-primary);
    font-size: 1.25rem;
}

.program-info {
    padding: 24px;
}

.program-info h3 {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.program-info p {
    color: var(--color-primary);
    margin-bottom: 16px;
    font-size: 0.95rem;
}

.program-meta {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.meta-item {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.85rem;
    color: var(--color-primary);
    font-family: var(--font-heading);
}

/* ===== CTA SECTION ===== */
.cta {
    background: linear-gradient(135deg, var(--color-secondary) 0%, #5C2A0A 100%);
    color: var(--color-on-primary);
}

.cta-box {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
}

.cta-title {
    font-family: var(--font-heading);
    font-size: 3rem;
    font-weight: 700;
    line-height: 1.2;
}

.cta-accent {
    color: var(--color-accent);
    display: block;
}

.cta-desc {
    font-size: 1.125rem;
    opacity: 0.9;
    margin: 24px 0;
    max-width: 500px;
}

.cta-options {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.cta-btn {
    background: var(--color-on-primary);
    color: var(--color-foreground);
    border-color: var(--color-on-primary);
}

.cta-btn:hover {
    background: var(--color-accent);
    color: var(--color-on-primary);
    border-color: var(--color-accent);
}

.cta-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.cta-circles {
    position: relative;
    width: 200px;
    height: 200px;
}

.circle {
    position: absolute;
    border-radius: 50%;
    border: 2px solid rgba(255, 255, 255, 0.3);
    animation: pulse-circle 3s ease-in-out infinite;
}

.circle-1 {
    width: 200px;
    height: 200px;
    top: 0;
    left: 0;
}

.circle-2 {
    width: 140px;
    height: 140px;
    top: 30px;
    left: 30px;
    animation-delay: 0.5s;
}

.circle-3 {
    width: 80px;
    height: 80px;
    top: 60px;
    left: 60px;
    background: var(--color-accent);
    animation-delay: 1s;
}

/* ===== FOOTER ===== */
.footer {
    background: var(--color-foreground);
    color: var(--color-on-primary);
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 60px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-logo-text {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.9rem;
}

.footer-links {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
}

.footer-col h4 {
    font-family: var(--font-heading);
    font-weight: 600;
    margin-bottom: 16px;
}

.footer-col ul {
    list-style: none;
}

.footer-col ul li {
    margin-bottom: 8px;
}

.footer-col ul li a {
    color: rgba(255, 255, 255, 0.6);
    text-decoration: none;
    transition: color var(--transition-base);
    font-size: 0.9rem;
}

.footer-col ul li a:hover {
    color: var(--color-accent);
}

.footer-bottom {
    padding-top: 20px;
    text-align: center;
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.4);
}

/* ===== ANIMATIONS ===== */
@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-20px); }
}

@keyframes ripple {
    0% { transform: scale(1); opacity: 1; }
    100% { transform: scale(2); opacity: 0; }
}

@keyframes bounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(8px); }
}

@keyframes pulse-circle {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.05); opacity: 0.8; }
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
    .section-title {
        font-size: 2rem;
    }
    
    .hero-main {
        font-size: 3rem;
    }
    
    .hero-cta-line {
        font-size: 2rem;
    }
    
    .problem-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .program-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .cta-box {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .cta-desc {
        margin: 24px auto;
    }
    
    .cta-options {
        justify-content: center;
    }
    
    .about-stats {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    .menu-toggle {
        display: block;
    }
    
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        flex-direction: column;
        background: var(--color-background);
        padding: 20px;
        box-shadow: 0 4px 24px rgba(0,0,0,0.08);
        gap: 16px;
        max-height: 80vh;
        overflow-y: auto;
    }
    
    .nav-links.active {
        display: flex;
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 30px;
    }
    
    .hero-desc {
        margin: 24px auto;
    }
    
    .hero-actions {
        justify-content: center;
    }
    
    .hero-visual {
        display: none;
    }
    
    .about-content {
        grid-template-columns: 1fr;
    }
    
    .about-stats {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
    }
    
    .problem-grid {
        grid-template-columns: 1fr;
    }
    
    .program-grid {
        grid-template-columns: 1fr;
    }
    
    .cta-title {
        font-size: 2.2rem;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
    }
    
    .section {
        padding: 60px 0;
    }
    
    .section-header {
        margin: 0 auto 32px;
    }
    
    .hero-main {
        font-size: 2.5rem;
    }
    
    .hero-cta-line {
        font-size: 1.5rem;
    }
    
    .section-title {
        font-size: 1.75rem;
    }
    
    .program-card:hover {
        transform: none;
    }
    
    .cta-box {
        gap: 40px;
    }
}

@media (max-width: 480px) {
    :root {
        --container-padding: 16px;
    }
    
    body {
        font-size: 15px;
    }
    
    .btn {
        padding: 12px 24px;
        font-size: 0.9rem;
        width: 100%;
        justify-content: center;
    }
    
    .btn-nav {
        padding: 8px 16px;
        font-size: 0.85rem;
    }
    
    .hero-actions {
        flex-direction: column;
        width: 100%;
    }
    
    .hero-main {
        font-size: 2.2rem;
    }
    
    .hero-cta-line {
        font-size: 1.3rem;
    }
    
    .hero-desc {
        font-size: 1rem;
    }
    
    .section-title {
        font-size: 1.5rem;
    }
    
    .about-stats {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    
    .stat-block {
        padding: 24px;
    }
    
    .stat-big {
        font-size: 2.5rem;
    }
    
    .problem-card {
        padding: 24px 16px;
    }
    
    .program-info {
        padding: 16px;
    }
    
    .program-info h3 {
        font-size: 1.25rem;
    }
    
    .cta-title {
        font-size: 1.8rem;
    }
    
    .cta-desc {
        font-size: 1rem;
    }
    
    .cta-options {
        flex-direction: column;
        width: 100%;
    }
    
    .cta-btn {
        width: 100%;
        justify-content: center;
    }
    
    .value-item {
        padding: 12px;
    }
    
    .footer {
        padding: 40px 0 16px;
    }
    
    .scroll-indicator {
        bottom: 12px;
    }
}

/* ===== REDUCED MOTION ===== */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto;
    }
}

/* ===== FOCUS VISIBLE ===== */
:focus-visible {
    outline: 3px solid var(--color-ring);
    outline-offset: 2px;
}

a:focus-visible,
button:focus-visible {
    outline: 3px solid var(--color-ring);
    outline-offset: 2px;
}