/* ===================================
   Arboreal — Design System
   =================================== */

:root {
    /* Core Palette - Warm forest greens with golden accents */
    --forest: #1a3a2f;
    --forest-light: #2d5a47;
    --sage: #6b8f71;
    --sage-light: #a8c5a0;
    --cream: #faf8f3;
    --cream-dark: #f0ede4;
    --bark: #4a3728;
    --bark-light: #7a5d4a;
    --gold: #d4a853;
    --gold-light: #e8c878;
    --coral: #e07a5f;
    
    /* Tree visualization colors */
    --leaf-1: #6b8f71;
    --leaf-2: #8faf7a;
    --leaf-3: #a8c5a0;
    --coin: #d4a853;
    
    /* Functional */
    --text-primary: #1a2e25;
    --text-secondary: #4a5f54;
    --text-muted: #7a8f84;
    
    /* Typography */
    --font-display: 'DM Serif Display', Georgia, serif;
    --font-body: 'Outfit', -apple-system, sans-serif;
    
    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2.5rem;
    --space-xl: 4rem;
    --space-2xl: 6rem;
    
    /* Transitions */
    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-bounce: cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* ===================================
   Reset & Base
   =================================== */

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
}

body {
    font-family: var(--font-body);
    font-weight: 400;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--cream);
    overflow-x: hidden;
}

img {
    max-width: 100%;
    display: block;
}

a {
    color: inherit;
    text-decoration: none;
}

button {
    font: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

/* ===================================
   Container & Layout
   =================================== */

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

.section {
    padding: var(--space-2xl) 0;
}

/* ===================================
   Navigation
   =================================== */

.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(250, 248, 243, 0.9);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(26, 58, 47, 0.08);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-md);
    height: 72px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-family: var(--font-display);
    font-size: 1.5rem;
    color: var(--forest);
}

.logo-icon {
    width: 32px;
    height: 32px;
    color: var(--forest);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
}

.nav-links a {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: color 0.2s ease;
}

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

.nav-links .nav-cta {
    background: var(--forest);
    color: var(--cream);
    padding: 0.75rem 1.5rem;
    border-radius: 100px;
    transition: all 0.3s var(--ease-out);
}

.nav-links .nav-cta:hover {
    background: var(--forest-light);
    transform: translateY(-2px);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    padding: 8px;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--forest);
    transition: all 0.3s ease;
}

.mobile-menu {
    display: none;
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--cream);
    padding: var(--space-md);
    flex-direction: column;
    gap: var(--space-sm);
    border-bottom: 1px solid rgba(26, 58, 47, 0.08);
    z-index: 999;
}

.mobile-menu a {
    padding: var(--space-sm);
    font-weight: 500;
    color: var(--text-secondary);
}

.mobile-menu .nav-cta {
    background: var(--forest);
    color: var(--cream);
    text-align: center;
    border-radius: 100px;
    margin-top: var(--space-xs);
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .mobile-menu.active {
        display: flex;
    }
}

/* ===================================
   Hero Section
   =================================== */

.hero {
    min-height: 100vh;
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: var(--space-xl);
    padding: calc(72px + var(--space-xl)) var(--space-md) var(--space-xl);
    max-width: 1400px;
    margin: 0 auto;
    position: relative;
}

.hero-bg {
    position: absolute;
    inset: 0;
    overflow: hidden;
    z-index: -1;
}

.hero-gradient {
    position: absolute;
    top: -50%;
    right: -20%;
    width: 80%;
    height: 150%;
    background: radial-gradient(ellipse at center, rgba(168, 197, 160, 0.3) 0%, transparent 70%);
    animation: pulse 8s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 0.6; transform: scale(1); }
    50% { opacity: 1; transform: scale(1.05); }
}

.hero-pattern {
    position: absolute;
    inset: 0;
    background-image: radial-gradient(circle at 2px 2px, rgba(26, 58, 47, 0.03) 1px, transparent 1px);
    background-size: 48px 48px;
}

.hero-content {
    max-width: 600px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    background: rgba(26, 58, 47, 0.08);
    padding: 0.5rem 1rem;
    border-radius: 100px;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--forest);
    margin-bottom: var(--space-md);
    animation: fadeInUp 0.8s var(--ease-out) both;
}

.badge-dot {
    width: 8px;
    height: 8px;
    background: var(--sage);
    border-radius: 50%;
    animation: blink 2s ease-in-out infinite;
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 400;
    line-height: 1.1;
    color: var(--forest);
    margin-bottom: var(--space-md);
    animation: fadeInUp 0.8s var(--ease-out) 0.1s both;
}

.hero-title .highlight {
    color: var(--sage);
    position: relative;
}

.hero-title .highlight::after {
    content: '';
    position: absolute;
    bottom: 0.1em;
    left: 0;
    right: 0;
    height: 0.15em;
    background: var(--gold-light);
    opacity: 0.5;
    z-index: -1;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: var(--space-lg);
    max-width: 480px;
    animation: fadeInUp 0.8s var(--ease-out) 0.2s both;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    margin-bottom: var(--space-xl);
    animation: fadeInUp 0.8s var(--ease-out) 0.3s both;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: 1rem 2rem;
    border-radius: 100px;
    font-weight: 500;
    font-size: 1rem;
    transition: all 0.3s var(--ease-out);
}

.btn-primary {
    background: var(--forest);
    color: var(--cream);
    box-shadow: 0 4px 20px rgba(26, 58, 47, 0.3);
}

.btn-primary:hover {
    background: var(--forest-light);
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(26, 58, 47, 0.35);
}

.btn-primary svg {
    transition: transform 0.3s var(--ease-out);
}

.btn-primary:hover svg {
    transform: translateX(4px);
}

.btn-secondary {
    background: transparent;
    color: var(--forest);
    border: 2px solid rgba(26, 58, 47, 0.2);
}

.btn-secondary:hover {
    border-color: var(--forest);
    background: rgba(26, 58, 47, 0.05);
}

.hero-stats {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
    animation: fadeInUp 0.8s var(--ease-out) 0.4s both;
}

.stat {
    display: flex;
    flex-direction: column;
}

.stat-value {
    font-family: var(--font-display);
    font-size: 2rem;
    color: var(--forest);
}

.stat-label {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.stat-divider {
    width: 1px;
    height: 48px;
    background: rgba(26, 58, 47, 0.15);
}

/* Hero Visual - Tree Animation */
.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
    animation: fadeIn 1s var(--ease-out) 0.5s both;
}

.tree-container {
    width: 100%;
    max-width: 400px;
}

.tree-svg {
    width: 100%;
    height: auto;
}

.trunk {
    stroke-dasharray: 300;
    stroke-dashoffset: 300;
    animation: drawLine 1.5s var(--ease-out) 0.8s forwards;
}

.branches path {
    stroke-dasharray: 200;
    stroke-dashoffset: 200;
    animation: drawLine 1s var(--ease-out) forwards;
}

.branches path:nth-child(1) { animation-delay: 1.3s; }
.branches path:nth-child(2) { animation-delay: 1.4s; }
.branches path:nth-child(3) { animation-delay: 1.5s; }
.branches path:nth-child(4) { animation-delay: 1.6s; }

@keyframes drawLine {
    to { stroke-dashoffset: 0; }
}

.leaf {
    opacity: 0;
    transform-origin: center;
    animation: leafGrow 0.6s var(--ease-bounce) forwards;
}

.leaf-1 { animation-delay: 1.8s; }
.leaf-2 { animation-delay: 1.9s; }
.leaf-3 { animation-delay: 2.0s; }
.leaf-4 { animation-delay: 2.1s; }
.leaf-5 { animation-delay: 2.2s; }
.leaf-6 { animation-delay: 2.3s; }
.leaf-7 { animation-delay: 2.4s; }
.leaf-8 { animation-delay: 2.5s; }
.leaf-9 { animation-delay: 2.6s; }
.leaf-10 { animation-delay: 2.7s; }
.leaf-11 { animation-delay: 2.8s; }
.leaf-12 { animation-delay: 2.9s; }
.leaf-13 { animation-delay: 3.0s; }
.leaf-14 { animation-delay: 3.1s; }
.leaf-15 { animation-delay: 3.2s; }

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

.coin {
    opacity: 0;
    animation: coinFloat 3s ease-in-out infinite;
}

.coin-1 { animation-delay: 3.0s; }
.coin-2 { animation-delay: 3.2s; }
.coin-3 { animation-delay: 3.4s; }
.coin-4 { animation-delay: 3.6s; }
.coin-5 { animation-delay: 3.8s; }

@keyframes coinFloat {
    0% { opacity: 0; transform: translateY(20px); }
    20% { opacity: 1; }
    80% { opacity: 1; }
    100% { opacity: 0; transform: translateY(-30px); }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes fadeInUp {
    from { 
        opacity: 0; 
        transform: translateY(30px); 
    }
    to { 
        opacity: 1; 
        transform: translateY(0); 
    }
}

@media (max-width: 968px) {
    .hero {
        grid-template-columns: 1fr;
        text-align: center;
        min-height: auto;
        padding-top: calc(72px + var(--space-lg));
    }
    
    .hero-content {
        max-width: 100%;
    }
    
    .hero-subtitle {
        max-width: 100%;
        margin-left: auto;
        margin-right: auto;
    }
    
    .hero-actions {
        justify-content: center;
    }
    
    .hero-stats {
        justify-content: center;
    }
    
    .hero-visual {
        order: -1;
    }
    
    .tree-container {
        max-width: 280px;
    }
}

/* ===================================
   How It Works Section
   =================================== */

.how-it-works {
    background: var(--forest);
    color: var(--cream);
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-xl);
}

.section-label {
    display: inline-block;
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--gold);
    margin-bottom: var(--space-sm);
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 400;
    line-height: 1.15;
    margin-bottom: var(--space-sm);
}

.how-it-works .section-title {
    color: var(--cream);
}

.section-subtitle {
    font-size: 1.15rem;
    opacity: 0.8;
}

.steps {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    gap: var(--space-md);
    margin-bottom: var(--space-xl);
}

.step {
    flex: 1;
    max-width: 280px;
    text-align: center;
    padding: var(--space-lg);
    background: rgba(255, 255, 255, 0.05);
    border-radius: 24px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s var(--ease-out);
}

.step:hover {
    background: rgba(255, 255, 255, 0.08);
    transform: translateY(-8px);
}

.step-number {
    font-family: var(--font-display);
    font-size: 0.9rem;
    color: var(--gold);
    margin-bottom: var(--space-sm);
}

.step-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--space-md);
    background: rgba(212, 168, 83, 0.15);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.step-icon svg {
    width: 32px;
    height: 32px;
    color: var(--gold);
}

.step-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--space-xs);
}

.step-desc {
    font-size: 0.95rem;
    opacity: 0.8;
    line-height: 1.6;
}

.step-arrow {
    display: flex;
    align-items: center;
    padding-top: 100px;
    color: rgba(255, 255, 255, 0.3);
}

.step-arrow svg {
    width: 24px;
    height: 24px;
}

@media (max-width: 868px) {
    .steps {
        flex-direction: column;
        align-items: center;
    }
    
    .step {
        max-width: 400px;
        width: 100%;
    }
    
    .step-arrow {
        transform: rotate(90deg);
        padding: 0;
    }
}

/* Example Box */
.example-box {
    max-width: 500px;
    margin: 0 auto;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    overflow: hidden;
}

.example-header {
    padding: var(--space-sm) var(--space-md);
    background: rgba(255, 255, 255, 0.03);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.example-label {
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    opacity: 0.6;
}

.example-content {
    padding: var(--space-md);
}

.example-item {
    display: grid;
    grid-template-columns: auto 1fr auto auto;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.example-item:last-of-type {
    border-bottom: none;
}

.example-emoji {
    font-size: 1.5rem;
}

.example-text {
    font-weight: 500;
}

.example-price {
    opacity: 0.6;
    font-family: monospace;
}

.example-roundup {
    color: var(--gold);
    font-weight: 600;
    font-family: monospace;
}

.example-total {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--space-md);
    margin-top: var(--space-sm);
    border-top: 2px solid rgba(255, 255, 255, 0.15);
    font-weight: 600;
}

.total-value {
    color: var(--gold);
    font-size: 1.1rem;
}

/* ===================================
   Commitment Section
   =================================== */

.commitment {
    background: var(--cream);
}

.commitment .section-title {
    color: var(--forest);
}

.commitment-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
}

.commitment-card {
    background: white;
    padding: var(--space-lg);
    border-radius: 24px;
    border: 1px solid rgba(26, 58, 47, 0.08);
    transition: all 0.3s var(--ease-out);
}

.commitment-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 60px rgba(26, 58, 47, 0.1);
}

.commitment-main {
    grid-column: span 2;
    background: linear-gradient(135deg, var(--forest) 0%, var(--forest-light) 100%);
    color: var(--cream);
    display: grid;
    grid-template-columns: auto 1fr;
    gap: var(--space-lg);
    align-items: center;
}

.commitment-main .commitment-icon {
    background: rgba(255, 255, 255, 0.1);
}

.commitment-main h3 {
    color: var(--cream);
}

.commitment-icon {
    width: 100px;
    height: 100px;
    background: rgba(26, 58, 47, 0.08);
    border-radius: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-md);
}

.commitment-main .commitment-icon {
    margin-bottom: 0;
    width: 140px;
    height: 140px;
}

.commitment-icon svg {
    width: 48px;
    height: 48px;
    color: var(--forest);
}

.commitment-main .commitment-icon svg {
    color: var(--cream);
}

.commitment-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--forest);
    margin-bottom: var(--space-xs);
}

.commitment-card p {
    color: var(--text-secondary);
    line-height: 1.6;
}

.commitment-main p {
    color: rgba(255, 255, 255, 0.85);
}

@media (max-width: 768px) {
    .commitment-grid {
        grid-template-columns: 1fr;
    }
    
    .commitment-main {
        grid-column: span 1;
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .commitment-main .commitment-icon {
        margin: 0 auto var(--space-md);
    }
}

/* ===================================
   About Section
   =================================== */

.about {
    background: var(--cream-dark);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-2xl);
    align-items: center;
}

.about-text .section-title {
    color: var(--forest);
    text-align: left;
}

.about-lead {
    font-size: 1.25rem;
    color: var(--text-primary);
    margin-bottom: var(--space-md);
}

.about-text p {
    color: var(--text-secondary);
    margin-bottom: var(--space-lg);
}

.about-vision {
    background: white;
    padding: var(--space-md);
    border-radius: 16px;
    border-left: 4px solid var(--gold);
}

.about-vision h4 {
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--gold);
    margin-bottom: var(--space-xs);
}

.about-vision p {
    margin-bottom: 0;
    font-style: italic;
}

/* Ripple Animation */
.about-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.ripple-container {
    position: relative;
    width: 300px;
    height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.ripple {
    position: absolute;
    border: 2px solid var(--sage);
    border-radius: 50%;
    animation: rippleExpand 3s ease-out infinite;
}

.ripple-1 {
    width: 100px;
    height: 100px;
    animation-delay: 0s;
}

.ripple-2 {
    width: 100px;
    height: 100px;
    animation-delay: 1s;
}

.ripple-3 {
    width: 100px;
    height: 100px;
    animation-delay: 2s;
}

@keyframes rippleExpand {
    0% {
        width: 100px;
        height: 100px;
        opacity: 0.8;
    }
    100% {
        width: 300px;
        height: 300px;
        opacity: 0;
    }
}

.ripple-center {
    position: relative;
    z-index: 10;
    background: var(--forest);
    width: 100px;
    height: 100px;
    border-radius: 50%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--cream);
    text-align: center;
}

.ripple-center span:first-child {
    font-family: var(--font-display);
    font-size: 1.5rem;
}

.ripple-center small {
    font-size: 0.7rem;
    opacity: 0.7;
}

.ripple-impact {
    font-size: 0.9rem !important;
    font-weight: 600;
    color: var(--gold);
}

@media (max-width: 868px) {
    .about-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .about-text .section-title {
        text-align: center;
    }
    
    .about-visual {
        order: -1;
    }
    
    .ripple-container {
        width: 250px;
        height: 250px;
    }
}

/* ===================================
   CTA Section
   =================================== */

.cta-section {
    background: var(--cream);
    padding: var(--space-xl) 0 var(--space-2xl);
}

.cta-box {
    background: linear-gradient(135deg, var(--sage) 0%, var(--sage-light) 100%);
    border-radius: 32px;
    padding: var(--space-2xl);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta-content {
    position: relative;
    z-index: 10;
}

.cta-box h2 {
    font-family: var(--font-display);
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    color: var(--forest);
    margin-bottom: var(--space-sm);
}

.cta-box p {
    font-size: 1.15rem;
    color: var(--forest);
    opacity: 0.8;
    margin-bottom: var(--space-lg);
}

.cta-buttons {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-sm);
}

.store-btn {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    background: var(--forest);
    color: var(--cream);
    padding: 0.875rem 1.5rem;
    border-radius: 12px;
    transition: all 0.3s var(--ease-out);
}

.store-btn:hover {
    background: var(--bark);
    transform: translateY(-3px);
}

.store-btn svg {
    width: 28px;
    height: 28px;
}

.store-text {
    text-align: left;
}

.store-text span {
    display: block;
    font-size: 0.7rem;
    opacity: 0.8;
}

.store-text strong {
    font-size: 1.1rem;
}

@keyframes coinDrift {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(10deg); }
}

/* ===================================
   Footer
   =================================== */

.footer {
    background: var(--forest);
    color: var(--cream);
    padding: var(--space-2xl) 0 var(--space-lg);
}

.footer-content {
    display: grid;
    grid-template-columns: 1.5fr 2fr;
    gap: var(--space-xl);
    margin-bottom: var(--space-xl);
}

.footer-links {
    display: flex;
    gap: var(--space-xl);
    justify-content: space-between;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-family: var(--font-display);
    font-size: 1.5rem;
    margin-bottom: var(--space-sm);
}

.footer-logo .logo-icon {
    color: var(--cream);
}

.footer-brand p {
    font-size: 0.9rem;
    opacity: 0.7;
    line-height: 1.6;
}

.footer-column h4 {
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--space-md);
    opacity: 0.6;
}

.footer-column a {
    display: block;
    font-size: 0.95rem;
    margin-bottom: var(--space-xs);
    opacity: 0.85;
    transition: opacity 0.2s ease;
}

.footer-column a:hover {
    opacity: 1;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--space-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
    font-size: 0.85rem;
    opacity: 0.6;
}

.footer-social {
    display: flex;
    gap: var(--space-sm);
}

.footer-social a {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    transition: all 0.3s var(--ease-out);
}

.footer-social a:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

.footer-social svg {
    width: 18px;
    height: 18px;
}

@media (max-width: 768px) {
    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }
    
    .footer-links {
        display: flex;
        justify-content: space-between;
        gap: var(--space-sm);
    }
    
    .footer-brand {
        text-align: center;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: var(--space-md);
        text-align: center;
    }
}

@media (max-width: 480px) {
    .footer-links {
        display: flex;
        justify-content: space-between;
        gap: var(--space-xs);
    }
    
    .footer-column {
        flex: 1;
        min-width: 0;
    }
    
    .footer-column h4 {
        font-size: 0.75rem;
    }
    
    .footer-column a {
        font-size: 0.8rem;
    }
    
    .footer-brand {
        text-align: center;
    }
    
    .footer-logo {
        justify-content: center;
    }
}

/* ===================================
   Utility Classes
   =================================== */

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Smooth scroll offset for fixed nav */
:target {
    scroll-margin-top: 100px;
}