/**
 * Creative Cove - Styles
 * Production-ready CSS with CSS variables and mobile-first approach
 */

/* ============================================
   CSS Variables (Color Palette & Design Tokens)
   ============================================ */
:root {
    /* Colors */
    --color-fog-white: #F2F1EF;
    --color-mist-gray: #D7D6D3;
    --color-brushed-aluminum: #B9BCC1;
    --color-graphite: #2B2D31;
    --color-bronze-one: #8A6A4E;
    --color-warm-gold: #C8A46B;
    --color-charcoal-shadow: #141517;
    
    /* Typography */
    --font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
    --font-size-base: 16px;
    --font-size-small: 0.875rem;
    --font-size-large: 1.125rem;
    --font-size-xl: 1.5rem;
    --font-size-2xl: 2rem;
    --font-size-3xl: 2.5rem;
    --font-size-4xl: 3.5rem;
    --line-height-base: 1.6;
    --line-height-tight: 1.4;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;
    
    /* Layout */
    --container-max-width: 1200px;
    --container-padding: 1.5rem;
    --section-padding: 4rem 0;
    
    /* Transitions */
    --transition-base: 0.3s ease;
    --transition-slow: 0.6s ease;
    
    /* Z-index layers */
    --z-sticky: 100;
    --z-hero-content: 10;
    --z-hero-bg: 1;
}

/* ============================================
   Reset & Base Styles
   ============================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

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

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: var(--line-height-base);
    color: var(--color-graphite);
    background-color: var(--color-fog-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

a {
    color: var(--color-bronze-one);
    text-decoration: none;
    transition: color var(--transition-base);
}

a:hover,
a:focus {
    color: var(--color-warm-gold);
    outline: 2px solid var(--color-warm-gold);
    outline-offset: 2px;
}

a:focus:not(:focus-visible) {
    outline: none;
}

/* ============================================
   Accessibility
   ============================================ */
.skip-link {
    position: absolute;
    top: -100px;
    left: 0;
    background: var(--color-charcoal-shadow);
    color: var(--color-fog-white);
    padding: var(--spacing-sm) var(--spacing-md);
    z-index: 1000;
    text-decoration: none;
}

.skip-link:focus {
    top: 0;
}

/* ============================================
   Container
   ============================================ */
.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: var(--color-fog-white);
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 120%;
    will-change: transform;
    z-index: var(--z-hero-bg);
}

.floating-balls-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 2; /* Above background, below sphere and content */
    opacity: 0.9;
    display: block;
}

/* Textured Sphere Background */
.hero-sphere {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 600px;
    height: 600px;
    max-width: 80vw;
    max-height: 80vw;
    background: var(--color-mist-gray);
    border-radius: 50%;
    box-shadow: 
        0 20px 60px rgba(20, 21, 23, 0.15),
        0 10px 30px rgba(20, 21, 23, 0.1),
        inset 0 2px 4px rgba(255, 255, 255, 0.3),
        inset 0 -2px 4px rgba(20, 21, 23, 0.1);
    /* Radial texture effect - fine undulating lines/grooves */
    background-image: 
        /* Fine radial grooves */
        repeating-conic-gradient(
            from 0deg at 50% 50%,
            var(--color-mist-gray) 0deg,
            var(--color-brushed-aluminum) 0.3deg,
            var(--color-mist-gray) 0.6deg,
            var(--color-fog-white) 0.7deg,
            var(--color-mist-gray) 0.9deg,
            var(--color-brushed-aluminum) 1.2deg,
            var(--color-mist-gray) 1.5deg
        ),
        /* Subtle radial gradient for depth */
        radial-gradient(
            ellipse at 50% 45%,
            var(--color-fog-white) 0%,
            var(--color-mist-gray) 30%,
            var(--color-brushed-aluminum) 60%,
            var(--color-mist-gray) 100%
        ),
        /* Light source highlight */
        radial-gradient(
            ellipse at 30% 25%,
            rgba(242, 241, 239, 0.4) 0%,
            transparent 50%
        );
    background-size: 100% 100%, 100% 100%, 100% 100%;
    background-position: center, center, center;
    will-change: transform;
}

/* Additional shadow layer for depth */
.hero-sphere::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background: radial-gradient(
        ellipse at 50% 60%,
        rgba(20, 21, 23, 0.2) 0%,
        transparent 70%
    );
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: var(--z-hero-content);
    text-align: center;
    padding: var(--spacing-xl) var(--container-padding);
    will-change: transform;
}

.hero-sphere {
    z-index: 3; /* Above floating balls */
}

.hero-logo-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-lg);
    animation: fadeInUp 1s ease-out;
    position: relative;
    z-index: 2;
    will-change: opacity, transform;
}

.hero-logo {
    position: relative;
    filter: drop-shadow(0 8px 16px rgba(20, 21, 23, 0.2)) 
            drop-shadow(0 4px 8px rgba(20, 21, 23, 0.15));
}

.logo-mark {
    width: 200px;
    height: 200px;
    margin: 0 auto;
    object-fit: contain;
    display: block;
    will-change: transform, opacity;
    transition: transform 0.1s linear, opacity 0.1s linear;
}

.logo-lettering {
    width: 300px;
    height: auto;
    max-width: 90vw;
    margin: var(--spacing-md) auto 0;
    object-fit: contain;
    filter: drop-shadow(0 2px 4px rgba(20, 21, 23, 0.1));
    will-change: transform, opacity;
    transition: transform 0.1s linear, opacity 0.1s linear;
}

.hero-subhead {
    font-size: var(--font-size-large);
    color: var(--color-graphite);
    margin-bottom: var(--spacing-xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    animation: fadeInUp 1s ease-out 0.4s both;
}

.hero-cta {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 1s ease-out 0.6s both;
}

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

/* ============================================
   Sticky Emblem
   ============================================ */
.sticky-emblem {
    position: fixed;
    top: var(--spacing-md);
    left: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    background: var(--color-fog-white);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(20, 21, 23, 0.1);
    z-index: var(--z-sticky);
    opacity: 0;
    transform: translateX(-20px) scale(0.8);
    transition: opacity 0.3s ease, transform 0.3s ease;
    pointer-events: none;
    will-change: opacity, transform;
}

.sticky-emblem.visible {
    opacity: 1;
    transform: translateX(0) scale(1);
}

.sticky-logo-mark {
    width: 32px;
    height: 32px;
    object-fit: contain;
    flex-shrink: 0;
}

.sticky-logo-lettering {
    height: 20px;
    width: auto;
    object-fit: contain;
    flex-shrink: 0;
}

@media (max-width: 768px) {
    .sticky-emblem {
        left: 50%;
        transform: translateX(calc(-50% - 20px));
        top: var(--spacing-sm);
        padding: var(--spacing-xs);
    }
    
    .sticky-emblem.visible {
        transform: translateX(-50%);
    }
    
    .sticky-logo-mark {
        width: 28px;
        height: 28px;
    }
    
    .sticky-logo-lettering {
        height: 18px;
    }
}

/* ============================================
   Sections
   ============================================ */
.section {
    padding: var(--section-padding);
    position: relative;
}

.section-title {
    font-size: var(--font-size-3xl);
    font-weight: 600;
    color: var(--color-charcoal-shadow);
    margin-bottom: var(--spacing-xl);
    text-align: center;
}

.section-story {
    background: var(--color-fog-white);
}

.story-content {
    max-width: 800px;
    margin: 0 auto;
}

.story-beat {
    margin-bottom: var(--spacing-lg);
    opacity: 0;
    transform: translateY(30px);
    transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.story-beat.visible {
    opacity: 1;
    transform: translateY(0);
}

.story-beat p {
    font-size: var(--font-size-large);
    line-height: var(--line-height-base);
    color: var(--color-graphite);
}

/* ============================================
   Services Section
   ============================================ */
.section-services {
    background: var(--color-mist-gray);
}

.services-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
    max-width: 1000px;
    margin: 0 auto;
}

.service-card {
    background: var(--color-fog-white);
    padding: var(--spacing-xl);
    border-radius: 8px;
    border: 1px solid var(--color-brushed-aluminum);
    opacity: 0;
    transform: translateY(30px);
    transition: opacity var(--transition-slow), transform var(--transition-slow), box-shadow var(--transition-base);
}

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

.service-card:hover {
    box-shadow: 0 4px 16px rgba(20, 21, 23, 0.1);
    border-color: var(--color-bronze-one);
}

.service-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--color-charcoal-shadow);
    margin-bottom: var(--spacing-md);
}

.service-points {
    list-style: none;
    margin-bottom: var(--spacing-lg);
}

.service-points li {
    padding-left: var(--spacing-md);
    position: relative;
    margin-bottom: var(--spacing-sm);
    color: var(--color-graphite);
}

.service-points li::before {
    content: '—';
    position: absolute;
    left: 0;
    color: var(--color-bronze-one);
}

.service-benefits {
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-brushed-aluminum);
}

.benefits-label {
    font-size: var(--font-size-small);
    font-weight: 600;
    color: var(--color-bronze-one);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: var(--spacing-xs);
}

.benefits-list {
    list-style: none;
}

.benefits-list li {
    font-size: var(--font-size-small);
    color: var(--color-graphite);
    padding-left: var(--spacing-md);
    position: relative;
    margin-bottom: var(--spacing-xs);
}

.benefits-list li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--color-warm-gold);
}

@media (min-width: 768px) {
    .services-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* ============================================
   Cove Animation Section
   ============================================ */
.section-cove {
    min-height: 300px;
    background: linear-gradient(180deg, var(--color-mist-gray) 0%, var(--color-fog-white) 100%);
    position: relative;
    overflow: hidden;
    padding: var(--spacing-3xl) 0;
}

.cove-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0.3;
}

/* ============================================
   Contact Section
   ============================================ */
.section-contact {
    background: var(--color-fog-white);
}

.contact-intro {
    text-align: center;
    font-size: var(--font-size-large);
    color: var(--color-graphite);
    margin-bottom: var(--spacing-xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.contact-form {
    max-width: 600px;
    margin: 0 auto;
    opacity: 0;
    transform: translateY(30px);
    transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.contact-form.visible {
    opacity: 1;
    transform: translateY(0);
}

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-group label {
    display: block;
    font-weight: 500;
    color: var(--color-charcoal-shadow);
    margin-bottom: var(--spacing-xs);
    font-size: var(--font-size-base);
}

.required {
    color: var(--color-bronze-one);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    color: var(--color-graphite);
    background: var(--color-fog-white);
    border: 1px solid var(--color-brushed-aluminum);
    border-radius: 4px;
    transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-bronze-one);
    box-shadow: 0 0 0 3px rgba(138, 106, 78, 0.1);
}

.form-group input:invalid:not(:focus):not(:placeholder-shown),
.form-group select:invalid:not(:focus),
.form-group textarea:invalid:not(:focus):not(:placeholder-shown) {
    border-color: #dc3545;
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.error-message {
    display: block;
    color: #dc3545;
    font-size: var(--font-size-small);
    margin-top: var(--spacing-xs);
    min-height: 1.25rem;
}

.form-message {
    margin-top: var(--spacing-md);
    padding: var(--spacing-md);
    border-radius: 4px;
    text-align: center;
    font-weight: 500;
    display: none;
}

.form-message.success {
    display: block;
    background: rgba(40, 167, 69, 0.1);
    color: #28a745;
    border: 1px solid #28a745;
}

.form-message.error {
    display: block;
    background: rgba(220, 53, 69, 0.1);
    color: #dc3545;
    border: 1px solid #dc3545;
}

/* ============================================
   Buttons
   ============================================ */
.btn {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-xl);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    font-weight: 500;
    text-align: center;
    border: 2px solid transparent;
    border-radius: 4px;
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: var(--color-bronze-one);
    color: var(--color-fog-white);
    border-color: var(--color-bronze-one);
}

.btn-primary:hover,
.btn-primary:focus {
    background: var(--color-warm-gold);
    border-color: var(--color-warm-gold);
    color: var(--color-fog-white);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(138, 106, 78, 0.3);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-secondary {
    background: transparent;
    color: var(--color-bronze-one);
    border-color: var(--color-bronze-one);
}

.btn-secondary:hover,
.btn-secondary:focus {
    background: var(--color-bronze-one);
    color: var(--color-fog-white);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(138, 106, 78, 0.2);
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
}

.btn-loader {
    display: none;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 20px;
    height: 20px;
    border: 2px solid rgba(242, 241, 239, 0.3);
    border-top-color: var(--color-fog-white);
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

.btn.loading .btn-text {
    opacity: 0;
}

.btn.loading .btn-loader {
    display: block;
}

@keyframes spin {
    to {
        transform: translate(-50%, -50%) rotate(360deg);
    }
}

/* ============================================
   Footer
   ============================================ */
.footer {
    background: var(--color-charcoal-shadow);
    color: var(--color-fog-white);
    padding: var(--spacing-xl) 0;
    text-align: center;
}

.footer p {
    font-size: var(--font-size-small);
    color: var(--color-brushed-aluminum);
}

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 768px) {
    :root {
        --font-size-4xl: 2.5rem;
        --font-size-3xl: 2rem;
        --section-padding: 3rem 0;
        --container-padding: 1rem;
    }
    
    .hero-sphere {
        width: 400px;
        height: 400px;
    }
    
    .logo-mark {
        width: 150px !important;
        height: 150px !important;
    }
    
    .logo-lettering {
        width: 250px !important;
    }
    
    .hero-subhead {
        font-size: var(--font-size-base);
    }
    
    .hero-cta {
        flex-direction: column;
        align-items: stretch;
    }
    
    .hero-cta .btn {
        width: 100%;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .service-card {
        padding: var(--spacing-lg);
    }
}

@media (max-width: 480px) {
    :root {
        --font-size-4xl: 2rem;
        --font-size-3xl: 1.75rem;
    }
    
    .hero-sphere {
        width: 300px;
        height: 300px;
    }
    
    .logo-mark {
        width: 120px !important;
        height: 120px !important;
    }
    
    .logo-lettering {
        width: 200px !important;
    }
}