/* ==========================================
   KONA LABS - Landing Page Styles
   B2B Innovation Engineering Partner
   ========================================== */

/* CSS Variables */
:root {
    /* Brand Colors */
    --quantum-blue: #0047FF;
    --void-black: #0A0E14;
    --neon-violet: #A855F7;
    --silver-mist: #B8C5D0;
    
    /* Extended Palette */
    --deep-void: #060810;
    --slate-dark: #1A1F2E;
    --tech-gray: #2D3748;
    --blue-glow: rgba(0, 71, 255, 0.15);
    --violet-glow: rgba(168, 85, 247, 0.15);
    
    /* Typography - Note: Using Google Fonts fallback for Sora */
    --font-headline: 'IBM Plex Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-body: 'IBM Plex Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', 'Courier New', monospace;
    
    /* Type Scale (1.333 - Perfect Fourth) */
    --text-xs: 0.75rem;      /* 12px */
    --text-sm: 1rem;         /* 16px base */
    --text-md: 1.333rem;     /* ~21px */
    --text-lg: 1.777rem;     /* ~28px */
    --text-xl: 2.369rem;     /* ~38px */
    --text-2xl: 3.157rem;    /* ~50px */
    --text-3xl: 4.209rem;    /* ~67px */
    
    /* Spacing (8px base unit) */
    --spacing-xs: 0.5rem;    /* 8px */
    --spacing-sm: 1rem;      /* 16px */
    --spacing-md: 1.5rem;    /* 24px */
    --spacing-lg: 2rem;      /* 32px */
    --spacing-xl: 3rem;      /* 48px */
    --spacing-2xl: 4rem;     /* 64px */
    --spacing-3xl: 6rem;     /* 96px */
    --spacing-4xl: 8rem;     /* 128px */
    
    /* Layout */
    --container-max: 1200px;
    --container-padding: 2rem;
    
    /* Effects */
    --transition-base: 400ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 24px var(--blue-glow);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-body);
    font-weight: 400;
    line-height: 1.6;
    color: var(--silver-mist);
    background-color: var(--void-black);
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    color: #ffffff;
}

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

button {
    font-family: var(--font-body);
    cursor: pointer;
    border: none;
    background: none;
}

ul {
    list-style: none;
}

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

/* ==========================================
   NAVIGATION
   ========================================== */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 14, 20, 0.9);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(184, 197, 208, 0.1);
    transition: transform var(--transition-base);
}

.nav.hidden {
    transform: translateY(-100%);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) var(--container-padding);
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.logo-icon {
    color: var(--quantum-blue);
    display: flex;
    align-items: center;
}

.logo-text {
    display: flex;
    flex-direction: column;
    line-height: 1.1;
}

.logo-kona {
    font-family: var(--font-headline);
    font-weight: 600;
    font-size: 1.125rem;
    color: #ffffff;
    letter-spacing: 0.02em;
}

.logo-labs {
    font-family: var(--font-mono);
    font-size: 0.625rem;
    color: var(--silver-mist);
    letter-spacing: 0.15em;
    text-transform: uppercase;
}

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

.nav-links a {
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--silver-mist);
    position: relative;
    transition: color var(--transition-base);
}

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

.nav-links a:not(.cta-button)::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--quantum-blue);
    transition: width var(--transition-base);
}

.nav-links a:not(.cta-button):hover::after {
    width: 100%;
}

/* ==========================================
   BUTTONS
   ========================================== */
.cta-button {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 0.75rem 1.5rem;
    font-size: var(--text-sm);
    font-weight: 500;
    border-radius: 4px;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.cta-button.primary {
    background: var(--quantum-blue);
    color: #ffffff;
    box-shadow: 0 4px 16px rgba(0, 71, 255, 0.3);
}

.cta-button.primary:hover {
    background: #0056FF;
    box-shadow: 0 6px 24px rgba(0, 71, 255, 0.4);
    transform: translateY(-2px);
}

.cta-button.secondary {
    background: transparent;
    color: var(--silver-mist);
    border: 2px solid var(--tech-gray);
}

.cta-button.secondary:hover {
    border-color: var(--quantum-blue);
    color: #ffffff;
    box-shadow: 0 0 16px var(--blue-glow);
}

.cta-button.full-width {
    width: 100%;
    justify-content: center;
}

/* ==========================================
   HERO SECTION
   ========================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 0;
}

.hex-grid {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(rgba(0, 71, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 71, 255, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    animation: gridScroll 20s linear infinite;
}

.circuit-pattern {
    position: absolute;
    top: 0;
    right: 0;
    width: 50%;
    height: 100%;
    background: radial-gradient(circle at 80% 50%, var(--blue-glow), transparent 50%);
    opacity: 0.6;
}

@keyframes gridScroll {
    0% {
        transform: translateY(0);
    }
    100% {
        transform: translateY(50px);
    }
}

.hero-content {
    position: relative;
    z-index: 1;
    padding: var(--spacing-3xl) 0;
}

.hero-tag {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--quantum-blue);
    margin-bottom: var(--spacing-md);
    padding: 0.5rem 1rem;
    background: var(--blue-glow);
    border: 1px solid rgba(0, 71, 255, 0.3);
    border-radius: 4px;
}

.hero-title {
    font-size: clamp(2.5rem, 8vw, var(--text-3xl));
    font-weight: 600;
    line-height: 1.1;
    margin-bottom: var(--spacing-md);
    max-width: 900px;
}

.gradient-text {
    background: linear-gradient(135deg, var(--quantum-blue), var(--neon-violet));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: var(--text-lg);
    color: var(--silver-mist);
    margin-bottom: var(--spacing-xl);
    max-width: 600px;
}

.hero-metrics {
    margin-bottom: var(--spacing-xl);
}

.metric {
    display: inline-block;
}

.metric-value {
    font-family: var(--font-mono);
    font-size: var(--text-md);
    color: #ffffff;
    margin-bottom: var(--spacing-xs);
}

.code-accent {
    color: var(--neon-violet);
    margin-right: var(--spacing-xs);
}

.metric-label {
    font-size: var(--text-sm);
    color: var(--silver-mist);
}

.hero-cta {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

/* ==========================================
   SECTION HEADERS
   ========================================== */
.section-header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.section-tag {
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--quantum-blue);
    margin-bottom: var(--spacing-md);
}

.section-title {
    font-size: clamp(2rem, 5vw, var(--text-2xl));
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.section-subtitle {
    font-size: var(--text-md);
    color: var(--silver-mist);
    max-width: 600px;
    margin: 0 auto;
}

/* ==========================================
   SERVICES SECTION
   ========================================== */
.services {
    padding: var(--spacing-4xl) 0;
    background: var(--deep-void);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-lg);
}

.service-card {
    background: var(--slate-dark);
    padding: var(--spacing-xl);
    border-radius: 8px;
    border: 1px solid rgba(184, 197, 208, 0.1);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, var(--quantum-blue), transparent);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-base);
}

.service-card:hover::before {
    transform: scaleX(1);
}

.service-card:hover {
    border-color: var(--quantum-blue);
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.service-card.accent {
    background: linear-gradient(135deg, rgba(0, 71, 255, 0.1), rgba(168, 85, 247, 0.1));
    border-color: var(--neon-violet);
}

.service-card.accent::before {
    background: linear-gradient(90deg, var(--neon-violet), var(--quantum-blue));
}

.service-icon {
    color: var(--quantum-blue);
    margin-bottom: var(--spacing-md);
}

.service-card.accent .service-icon {
    color: var(--neon-violet);
}

.service-card h3 {
    font-size: var(--text-lg);
    margin-bottom: var(--spacing-md);
}

.service-card p {
    color: var(--silver-mist);
    margin-bottom: var(--spacing-lg);
    line-height: 1.7;
}

.service-features {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.service-features li {
    font-size: var(--text-sm);
    color: var(--silver-mist);
    padding-left: var(--spacing-md);
    position: relative;
}

.service-features li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--quantum-blue);
}

/* ==========================================
   APPROACH SECTION
   ========================================== */
.approach {
    padding: var(--spacing-4xl) 0;
    background: var(--void-black);
}

.approach-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: var(--spacing-xl);
}

.approach-step {
    position: relative;
    padding: var(--spacing-xl);
    background: var(--slate-dark);
    border-radius: 8px;
    border-left: 4px solid var(--quantum-blue);
    transition: all var(--transition-base);
}

.approach-step:hover {
    transform: translateX(8px);
    box-shadow: var(--shadow-md);
}

.step-number {
    font-family: var(--font-mono);
    font-size: var(--text-xl);
    font-weight: 600;
    color: var(--quantum-blue);
    margin-bottom: var(--spacing-md);
}

.approach-step h3 {
    font-size: var(--text-md);
    margin-bottom: var(--spacing-md);
}

.approach-step p {
    color: var(--silver-mist);
    margin-bottom: var(--spacing-md);
    line-height: 1.7;
}

.step-tech {
    display: flex;
    gap: var(--spacing-xs);
    flex-wrap: wrap;
}

.tech-tag {
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    color: var(--quantum-blue);
    background: var(--blue-glow);
    padding: 0.25rem 0.75rem;
    border-radius: 4px;
    border: 1px solid rgba(0, 71, 255, 0.2);
}

/* ==========================================
   EXPERTISE SECTION
   ========================================== */
.expertise {
    padding: var(--spacing-4xl) 0;
    background: var(--deep-void);
}

.tech-stack {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-xl);
}

.tech-category {
    padding: var(--spacing-lg);
    background: var(--slate-dark);
    border-radius: 8px;
    border: 1px solid rgba(184, 197, 208, 0.1);
}

.tech-category h4 {
    font-size: var(--text-md);
    margin-bottom: var(--spacing-md);
    color: var(--quantum-blue);
    font-weight: 600;
}

.tech-items {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.tech-items span {
    font-family: var(--font-mono);
    font-size: var(--text-sm);
    color: var(--silver-mist);
    background: var(--tech-gray);
    padding: 0.5rem 1rem;
    border-radius: 4px;
    transition: all var(--transition-base);
    border: 1px solid transparent;
}

.tech-items span:hover {
    color: #ffffff;
    border-color: var(--quantum-blue);
    background: var(--blue-glow);
}

/* ==========================================
   CONTACT SECTION
   ========================================== */
.contact {
    padding: var(--spacing-4xl) 0;
    background: var(--void-black);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: var(--spacing-3xl);
    align-items: start;
}

.contact-info {
    position: sticky;
    top: 120px;
}

.contact-description {
    color: var(--silver-mist);
    line-height: 1.8;
    margin-bottom: var(--spacing-xl);
    font-size: var(--text-md);
}

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

.contact-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    color: var(--silver-mist);
    transition: color var(--transition-base);
}

.contact-item svg {
    color: var(--quantum-blue);
}

.contact-item a {
    font-size: var(--text-md);
    color: inherit;
}

.contact-item:hover {
    color: #ffffff;
}

/* Contact Form */
.contact-form-wrapper {
    background: var(--slate-dark);
    padding: var(--spacing-xl);
    border-radius: 8px;
    border: 1px solid rgba(184, 197, 208, 0.1);
}

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

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

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

.form-group label {
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--silver-mist);
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 0.75rem 1rem;
    font-family: var(--font-body);
    font-size: var(--text-sm);
    background: var(--tech-gray);
    border: 2px solid transparent;
    border-radius: 4px;
    color: #ffffff;
    transition: all var(--transition-base);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--quantum-blue);
    background: var(--slate-dark);
    box-shadow: 0 0 0 3px var(--blue-glow);
}

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

/* ==========================================
   FOOTER
   ========================================== */
.footer {
    background: var(--deep-void);
    border-top: 1px solid rgba(184, 197, 208, 0.1);
    padding: var(--spacing-3xl) 0 var(--spacing-xl) 0;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-xl);
    align-items: start;
}

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

.footer-tagline {
    color: var(--silver-mist);
    font-size: var(--text-sm);
}

.footer-links {
    display: flex;
    gap: var(--spacing-lg);
    justify-content: flex-end;
}

.footer-links a {
    font-size: var(--text-sm);
    color: var(--silver-mist);
}

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

.footer-legal {
    grid-column: 1 / -1;
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(184, 197, 208, 0.1);
    text-align: center;
}

.footer-legal p {
    font-size: var(--text-xs);
    color: var(--silver-mist);
}

/* ==========================================
   ANIMATIONS
   ========================================== */
[data-animate] {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-animate].animate {
    opacity: 1;
    transform: translateY(0);
}

/* ==========================================
   RESPONSIVE DESIGN
   ========================================== */
@media (max-width: 968px) {
    .contact-content {
        grid-template-columns: 1fr;
    }
    
    .contact-info {
        position: static;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-links {
        justify-content: center;
    }
}

@media (max-width: 768px) {
    :root {
        --container-padding: 1.5rem;
    }
    
    .nav-links a:not(.cta-button) {
        display: none;
    }
    
    .hero {
        min-height: 90vh;
    }
    
    .hero-cta {
        flex-direction: column;
    }
    
    .cta-button {
        width: 100%;
        justify-content: center;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .services-grid,
    .approach-grid,
    .tech-stack {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 1.75rem;
    }
}