/* ============================================
   Day At The Lake — Guntersville Lake
   Clean Minimalist Design System
   ============================================ */

/* --- CSS Custom Properties --- */
:root {
    --color-midnight: #0a2540;
    --color-midnight-light: #1a3a5c;
    --color-mint: #2dd4bf;
    --color-mint-light: #5eead4;
    --color-mint-pale: #ccfbf1;
    --color-cream: #fafaf9;
    --color-warm-white: #f5f5f4;
    --color-slate: #64748b;
    --color-slate-light: #94a3b8;
    --color-border: rgba(10, 37, 64, 0.08);
    --color-border-strong: rgba(10, 37, 64, 0.15);
    
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-serif: 'Playfair Display', Georgia, serif;
    
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2rem;
    --space-xl: 3rem;
    --space-2xl: 4rem;
    --space-3xl: 6rem;
    --space-4xl: 8rem;
    
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
    
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

/* --- Reset & Base --- */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

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

body {
    font-family: var(--font-sans);
    font-weight: 300;
    font-size: 16px;
    line-height: 1.7;
    color: var(--color-midnight);
    background-color: #ffffff;
    overflow-x: hidden;
}

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

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

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

/* --- Utility --- */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

/* --- Typography --- */
h1, h2, h3, h4 {
    font-family: var(--font-serif);
    font-weight: 400;
    line-height: 1.2;
    color: var(--color-midnight);
}

.section-eyebrow {
    font-family: var(--font-sans);
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--color-mint);
    margin-bottom: var(--space-sm);
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: var(--space-lg);
}

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
    padding: 0.875rem 2rem;
    font-family: var(--font-sans);
    font-size: 0.875rem;
    font-weight: 500;
    letter-spacing: 0.05em;
    border-radius: var(--radius-sm);
    transition: all var(--transition);
    white-space: nowrap;
}

.btn-primary {
    background: var(--color-mint);
    color: var(--color-midnight);
    border: 1.5px solid var(--color-mint);
}

.btn-primary:hover {
    background: var(--color-mint-light);
    border-color: var(--color-mint-light);
    transform: translateY(-1px);
    box-shadow: 0 4px 20px rgba(45, 212, 191, 0.3);
}

.btn-outline {
    background: transparent;
    color: var(--color-midnight);
    border: 1.5px solid var(--color-midnight);
}

.btn-outline:hover {
    background: var(--color-midnight);
    color: #ffffff;
}

.btn-ghost {
    background: rgba(255, 255, 255, 0.15);
    color: #ffffff;
    border: 1.5px solid rgba(255, 255, 255, 0.4);
    backdrop-filter: blur(8px);
}

.btn-ghost:hover {
    background: rgba(255, 255, 255, 0.25);
    border-color: rgba(255, 255, 255, 0.6);
}

.btn-full {
    width: 100%;
}

/* --- Navigation --- */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: var(--space-lg) 0;
    transition: all var(--transition);
}

.nav.scrolled {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    padding: var(--space-sm) 0;
    box-shadow: 0 1px 0 var(--color-border);
}

.nav.scrolled .logo {
    color: var(--color-midnight);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-family: var(--font-serif);
    font-size: 1.125rem;
    font-weight: 600;
    color: #ffffff;
    letter-spacing: -0.02em;
}

.logo-icon {
    display: flex;
    align-items: center;
    opacity: 0.8;
}

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

.nav-links a {
    font-size: 0.875rem;
    font-weight: 400;
    color: rgba(255, 255, 255, 0.8);
    transition: color var(--transition);
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1px;
    background: currentColor;
    transition: width var(--transition);
}

.nav-links a:hover {
    color: #ffffff;
}

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

.nav.scrolled .nav-links a {
    color: var(--color-slate);
}

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

.nav.scrolled .nav-links a::after {
    background: var(--color-midnight);
}

/* Mobile Menu Toggle */
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: var(--space-xs);
    z-index: 1001;
}

.nav-toggle span {
    display: block;
    width: 22px;
    height: 1.5px;
    background: #ffffff;
    transition: all var(--transition);
    transform-origin: center;
}

.nav.scrolled .nav-toggle span {
    background: var(--color-midnight);
}

.nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(4px, 5px);
}

.nav-toggle.active span:nth-child(2) {
    opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(4px, -5px);
}

/* --- Hero Section --- */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    overflow: hidden;
}

.hero-gradient {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        135deg,
        var(--color-midnight) 0%,
        #0d3b66 30%,
        #0f4f6e 50%,
        #1a6b6b 70%,
        #1a8a7a 85%,
        var(--color-mint) 100%
    );
    z-index: 0;
}

.hero-gradient::before {
    content: '';
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(ellipse 80% 50% at 20% 80%, rgba(45, 212, 191, 0.15) 0%, transparent 60%),
        radial-gradient(ellipse 60% 40% at 80% 20%, rgba(26, 58, 92, 0.3) 0%, transparent 60%);
}

.hero-gradient::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 200px;
    background: linear-gradient(to top, rgba(255, 255, 255, 0.03), transparent);
}

/* Decorative lake wave lines */
.hero-gradient .wave-line {
    position: absolute;
    width: 100%;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(45, 212, 191, 0.1), transparent);
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
    padding: var(--space-4xl) var(--space-lg);
}

.hero-eyebrow {
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--color-mint-light);
    margin-bottom: var(--space-lg);
    opacity: 0;
    animation: fadeUp 0.8s ease forwards;
    animation-delay: 0.2s;
}

.hero-title {
    font-size: clamp(2.25rem, 5.5vw, 4rem);
    color: #ffffff;
    line-height: 1.15;
    margin-bottom: var(--space-lg);
    font-weight: 400;
    letter-spacing: -0.02em;
    opacity: 0;
    animation: fadeUp 0.8s ease forwards;
    animation-delay: 0.4s;
}

.hero-subtitle {
    font-size: clamp(1rem, 1.5vw, 1.125rem);
    color: rgba(255, 255, 255, 0.7);
    max-width: 560px;
    margin: 0 auto var(--space-xl);
    line-height: 1.8;
    font-weight: 300;
    opacity: 0;
    animation: fadeUp 0.8s ease forwards;
    animation-delay: 0.6s;
}

.hero-actions {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-md);
    flex-wrap: wrap;
    opacity: 0;
    animation: fadeUp 0.8s ease forwards;
    animation-delay: 0.8s;
}

.hero-scroll {
    position: absolute;
    bottom: var(--space-xl);
    left: 50%;
    transform: translateX(-50%);
    z-index: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-xs);
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.7rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    opacity: 0;
    animation: fadeIn 1s ease forwards;
    animation-delay: 1.2s;
}

.hero-scroll svg {
    animation: bounce 2s ease infinite;
}

/* --- Sections --- */
section {
    padding: var(--space-4xl) 0;
}

.section-header {
    margin-bottom: var(--space-3xl);
}

/* --- About Section --- */
.about {
    background: #ffffff;
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
    align-items: center;
}

.about-image {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    aspect-ratio: 6/7;
}

.about-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.about-image:hover img {
    transform: scale(1.02);
}

.about-image::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(10, 37, 64, 0.1), transparent 40%);
    border-radius: var(--radius-lg);
}

.about-content {
    padding: var(--space-lg) 0;
}

.about-text {
    font-size: 1.0625rem;
    color: var(--color-slate);
    margin-bottom: var(--space-md);
    line-height: 1.8;
}

.about-stats {
    display: flex;
    gap: var(--space-xl);
    margin-top: var(--space-xl);
    padding-top: var(--space-xl);
    border-top: 1px solid var(--color-border);
}

.stat {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.stat-number {
    font-family: var(--font-serif);
    font-size: 2rem;
    color: var(--color-midnight);
    line-height: 1;
}

.stat-label {
    font-size: 0.8125rem;
    color: var(--color-slate-light);
    letter-spacing: 0.05em;
}

/* --- Amenities Section --- */
.amenities {
    background: var(--color-cream);
}

.amenities-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
}

.amenity-card {
    background: #ffffff;
    padding: var(--space-xl);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    transition: all var(--transition);
}

.amenity-card:hover {
    border-color: var(--color-mint);
    transform: translateY(-4px);
    box-shadow: 0 20px 60px rgba(10, 37, 64, 0.06);
}

.amenity-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    background: var(--color-mint-pale);
    color: var(--color-midnight);
    margin-bottom: var(--space-md);
}

.amenity-title {
    font-family: var(--font-sans);
    font-size: 1.0625rem;
    font-weight: 500;
    margin-bottom: var(--space-xs);
    color: var(--color-midnight);
}

.amenity-desc {
    font-size: 0.9375rem;
    color: var(--color-slate);
    line-height: 1.7;
}

/* --- Gallery Section --- */
.gallery {
    padding: 0;
    background: var(--color-midnight);
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2px;
}

.gallery-item {
    aspect-ratio: 5/4;
    overflow: hidden;
    position: relative;
}

.gallery-item::after {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(10, 37, 64, 0.2);
    transition: background var(--transition);
}

.gallery-item:hover::after {
    background: rgba(10, 37, 64, 0.05);
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.gallery-item:hover img {
    transform: scale(1.05);
}

/* --- Location Section --- */
.location {
    background: #ffffff;
}

.location-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
    align-items: stretch;
}

.location-map {
    border-radius: var(--radius-lg);
    overflow: hidden;
    min-height: 400px;
    border: 1px solid var(--color-border);
}

.location-info {
    display: flex;
    flex-direction: column;
    gap: var(--space-xl);
    padding-top: var(--space-sm);
}

.location-detail {
    display: flex;
    gap: var(--space-md);
    align-items: flex-start;
}

.location-icon {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    background: var(--color-mint-pale);
    color: var(--color-midnight);
    flex-shrink: 0;
}

.location-detail h4 {
    font-family: var(--font-sans);
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: var(--space-xs);
    color: var(--color-midnight);
}

.location-detail p {
    font-size: 0.9375rem;
    color: var(--color-slate);
    line-height: 1.7;
}

.location-detail a {
    color: var(--color-midnight);
    border-bottom: 1px solid var(--color-border);
    transition: border-color var(--transition);
}

.location-detail a:hover {
    border-color: var(--color-mint);
    color: var(--color-mint);
}

.location-highlights {
    padding-top: var(--space-lg);
    border-top: 1px solid var(--color-border);
}

.location-highlights h4 {
    font-family: var(--font-sans);
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: var(--space-md);
    color: var(--color-midnight);
}

.location-highlights ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.location-highlights li {
    font-size: 0.9375rem;
    color: var(--color-slate);
    padding-left: var(--space-lg);
    position: relative;
}

.location-highlights li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.6em;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--color-mint);
}

/* --- Contact Section --- */
.contact {
    background: var(--color-midnight);
    color: #ffffff;
}

.contact .section-eyebrow {
    color: var(--color-mint-light);
}

.contact .section-title {
    color: #ffffff;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
    align-items: start;
}

.contact-desc {
    font-size: 1.0625rem;
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: var(--space-xl);
    line-height: 1.8;
}

.contact-methods {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.contact-method {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md);
    border-radius: var(--radius-md);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all var(--transition);
}

.contact-method:hover {
    border-color: var(--color-mint);
    background: rgba(45, 212, 191, 0.05);
}

.contact-method svg {
    color: var(--color-mint);
    flex-shrink: 0;
}

.contact-method span {
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.9);
}

/* --- Contact Form --- */
.contact-form-wrapper {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    backdrop-filter: blur(10px);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-md);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.form-group label {
    font-size: 0.8125rem;
    font-weight: 500;
    letter-spacing: 0.05em;
    color: rgba(255, 255, 255, 0.6);
}

.form-group input,
.form-group select,
.form-group textarea {
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: var(--radius-sm);
    padding: 0.75rem 1rem;
    font-family: var(--font-sans);
    font-size: 0.9375rem;
    color: #ffffff;
    transition: all var(--transition);
    outline: none;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: rgba(255, 255, 255, 0.3);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--color-mint);
    background: rgba(45, 212, 191, 0.06);
}

.form-group select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='rgba(255,255,255,0.5)' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    padding-right: 2.5rem;
}

.form-group select option {
    background: var(--color-midnight);
    color: #ffffff;
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

.form-success {
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: var(--space-2xl);
    gap: var(--space-md);
}

.form-success svg {
    color: var(--color-mint);
}

.form-success h3 {
    color: #ffffff;
    font-size: 1.5rem;
}

.form-success p {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.9375rem;
}

/* --- Footer --- */
.footer {
    background: #061a2e;
    padding: var(--space-3xl) 0 var(--space-lg);
    color: rgba(255, 255, 255, 0.6);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1.5fr;
    gap: var(--space-3xl);
    margin-bottom: var(--space-2xl);
}

.footer-brand .logo {
    margin-bottom: var(--space-md);
}

.footer-brand p {
    font-size: 0.9375rem;
    line-height: 1.7;
    max-width: 280px;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.footer-links h4,
.footer-contact h4 {
    font-family: var(--font-sans);
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.4);
    margin-bottom: var(--space-md);
}

.footer-links a {
    font-size: 0.9375rem;
    color: rgba(255, 255, 255, 0.6);
    transition: color var(--transition);
}

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

.footer-contact p {
    font-size: 0.9375rem;
    margin-bottom: var(--space-xs);
    line-height: 1.7;
}

.footer-contact a {
    color: rgba(255, 255, 255, 0.6);
    transition: color var(--transition);
}

.footer-contact a:hover {
    color: var(--color-mint);
}

.footer-bottom {
    padding-top: var(--space-xl);
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    font-size: 0.8125rem;
    color: rgba(255, 255, 255, 0.3);
}

/* --- Animations --- */
@keyframes fadeUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(4px); }
}

/* Scroll-triggered animations */
.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* --- Responsive --- */
@media (max-width: 1024px) {
    .amenities-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .gallery-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: #ffffff;
        flex-direction: column;
        justify-content: center;
        gap: var(--space-lg);
        padding: var(--space-xl);
        transition: right var(--transition);
        box-shadow: -10px 0 40px rgba(0, 0, 0, 0.1);
    }
    
    .nav-links.open {
        right: 0;
    }
    
    .nav-links a {
        color: var(--color-midnight) !important;
        font-size: 1.125rem;
    }
    
    .nav-links a::after {
        background: var(--color-midnight) !important;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .about-grid,
    .location-grid,
    .contact-grid {
        grid-template-columns: 1fr;
        gap: var(--space-2xl);
    }
    
    .about-image {
        aspect-ratio: 4/3;
    }
    
    .amenities-grid {
        grid-template-columns: 1fr;
    }
    
    .gallery-grid {
        grid-template-columns: 1fr 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: var(--space-xl);
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .hero-actions {
        flex-direction: column;
        width: 100%;
    }
    
    .hero-actions .btn {
        width: 100%;
    }
    
    .about-stats {
        flex-wrap: wrap;
        gap: var(--space-lg);
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--space-md);
    }
    
    section {
        padding: var(--space-3xl) 0;
    }
    
    .gallery-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-form-wrapper {
        padding: var(--space-md);
    }
}

/* Mobile menu overlay */
.nav-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(10, 37, 64, 0.5);
    z-index: 999;
}

.nav-overlay.active {
    display: block;
}