/* ================================
   CSS VARIABLES
   ================================ */
:root {
    /* Colors - Scientific & Educational Theme */
    --color-primary: #2563eb;        /* Professional Blue */
    --color-primary-dark: #1d4ed8;   /* Deeper Blue */
    --color-accent: #0ea5e9;         /* Bright Cyan */
    --color-text: #1e293b;           /* Dark Slate */
    --color-text-secondary: #64748b; /* Slate Gray */
    --color-background: #ffffff;      /* Pure White */
    --color-surface: #f8fafc;        /* Very Light Blue-Gray */
    --color-border: #e2e8f0;         /* Light Border */
    --color-success: #10b981;        /* Success Green */
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    --spacing-xxl: 8rem;
    
    /* Typography */
    --font-primary: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --font-weight-light: 300;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Borders */
    --border-radius-sm: 8px;
    --border-radius-md: 12px;
    --border-radius-lg: 18px;
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.12);
}

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

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

body {
    font-family: var(--font-primary);
    color: var(--color-text);
    background-color: var(--color-background);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

::selection {
    background-color: var(--color-primary);
    color: white;
}

/* ================================
   TYPOGRAPHY
   ================================ */
h1, h2, h3, h4, h5, h6 {
    font-weight: var(--font-weight-semibold);
    line-height: 1.2;
    letter-spacing: -0.01em;
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4.5rem);
    font-weight: var(--font-weight-bold);
    letter-spacing: -0.02em;
}

h2 {
    font-size: clamp(2rem, 4vw, 3.5rem);
}

h3 {
    font-size: clamp(1.5rem, 3vw, 2rem);
}

p {
    font-size: 1.125rem;
    line-height: 1.7;
    color: var(--color-text-secondary);
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: opacity var(--transition-fast);
}

a:hover {
    opacity: 0.8;
}

/* ================================
   LAYOUT UTILITIES
   ================================ */
.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

@media (max-width: 768px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .hero {
        padding: calc(64px + var(--spacing-lg)) var(--spacing-sm) var(--spacing-lg);
    }
}

/* ================================
   NAVIGATION
   ================================ */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background-color: rgba(255, 255, 255, 0.8);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    transition: background-color var(--transition-normal);
}

/* Blue Navigation Variant */
.nav-blue {
    background-color: var(--color-primary);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.nav-blue .nav-logo,
.nav-blue .nav-link {
    color: white;
}

.nav-blue .nav-link:hover {
    color: rgba(255, 255, 255, 0.8);
}

.nav-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

/* Wider Navigation Container */
.nav-container-wide {
    max-width: 1440px;
    padding: 0 var(--spacing-lg);
    height: 64px;
}

.nav-logo {
    font-size: 1.25rem;
    font-weight: var(--font-weight-semibold);
    color: var(--color-text);
}

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

.nav-link {
    color: var(--color-text);
    font-size: 0.875rem;
    font-weight: var(--font-weight-normal);
    transition: color var(--transition-fast);
}

.nav-link:hover {
    color: var(--color-primary);
    opacity: 1;
}

.nav-cta {
    padding: 0.5rem 1rem;
    background-color: var(--color-primary);
    color: white;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: var(--font-weight-medium);
    transition: background-color var(--transition-fast);
}

.nav-cta:hover {
    background-color: var(--color-primary-dark);
    opacity: 1;
}

/* Inverse CTA for blue nav */
.nav-cta-inverse {
    background-color: white;
    color: var(--color-primary);
}

.nav-cta-inverse:hover {
    background-color: rgba(255, 255, 255, 0.9);
    opacity: 1;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.nav-toggle span {
    width: 20px;
    height: 2px;
    background-color: var(--color-text);
    transition: all var(--transition-fast);
}

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

/* ================================
   HERO SECTION
   ================================ */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: calc(64px + var(--spacing-xl)) var(--spacing-md) var(--spacing-xl);
    position: relative;
    overflow: hidden;
}

.hero-content {
    max-width: 900px;
    text-align: center;
    margin-bottom: var(--spacing-lg);
    animation: fadeInUp 0.8s ease-out;
}

.hero-title {
    margin-bottom: var(--spacing-md);
    color: var(--color-text);
}

.hero-title-line {
    display: block;
    animation: fadeInUp 0.8s ease-out;
}

.hero-title-line:nth-child(2) {
    animation-delay: 0.1s;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.375rem;
    line-height: 1.6;
    max-width: 700px;
    margin: 0 auto var(--spacing-md);
    animation: fadeInUp 0.8s ease-out 0.2s both;
}

.hero-cta {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease-out 0.3s both;
}

.hero-visual {
    max-width: 1000px;
    width: 100%;
    margin-bottom: var(--spacing-lg);
    animation: fadeInUp 0.8s ease-out 0.4s both;
}

.hero-video {
    width: 100%;
    max-width: 1280px;
    height: auto;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    display: block;
    margin: 0 auto;
}

.hero-video {
    width: 100%;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    display: block;
}

.hero-placeholder,
.placeholder-content {
    aspect-ratio: 16/9;
    background: linear-gradient(135deg, var(--color-surface) 0%, #e8e8ed 100%);
    border-radius: var(--border-radius-lg);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--color-text-secondary);
    font-size: 1rem;
    font-weight: var(--font-weight-medium);
    border: 2px dashed var(--color-border);
}

.placeholder-content p {
    font-size: 1.125rem;
    font-weight: var(--font-weight-semibold);
    margin-bottom: 0.5rem;
    color: var(--color-text);
}

.placeholder-content span {
    font-size: 0.875rem;
}

.scroll-indicator {
    position: absolute;
    bottom: var(--spacing-md);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    color: var(--color-text-secondary);
    font-size: 0.75rem;
    font-weight: var(--font-weight-medium);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    animation: fadeInUp 0.8s ease-out 0.5s both;
}

.scroll-line {
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, var(--color-text-secondary), transparent);
    animation: scrollLine 2s ease-in-out infinite;
}

@keyframes scrollLine {
    0%, 100% { opacity: 0; transform: translateY(-10px); }
    50% { opacity: 1; transform: translateY(0); }
}

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

/* ================================
   BUTTONS
   ================================ */
.btn {
    display: inline-block;
    padding: 0.875rem 1.75rem;
    border-radius: 24px;
    font-size: 1rem;
    font-weight: var(--font-weight-medium);
    text-align: center;
    cursor: pointer;
    border: none;
    transition: all var(--transition-normal);
    white-space: nowrap;
}

.btn-primary {
    background-color: var(--color-primary);
    color: white;
}

.btn-primary:hover {
    background-color: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    opacity: 1;
}

.btn-secondary {
    background-color: transparent;
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
}

.btn-secondary:hover {
    background-color: var(--color-primary);
    color: white;
    opacity: 1;
}

.btn-full {
    width: 100%;
}

/* ================================
   STATS SECTION
   ================================ */
.stats {
    padding: var(--spacing-xl) 0;
    background-color: var(--color-text);
    color: white;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    text-align: center;
}

.stats-grid-3 {
    grid-template-columns: repeat(3, 1fr);
    max-width: 1000px;
    margin: 0 auto;
}

@media (max-width: 768px) {
    .stats-grid-3 {
        grid-template-columns: 1fr;
    }
}

.stat-item {
    animation: fadeInUp 0.6s ease-out both;
}

.stat-item:nth-child(1) { animation-delay: 0.1s; }
.stat-item:nth-child(2) { animation-delay: 0.2s; }
.stat-item:nth-child(3) { animation-delay: 0.3s; }
.stat-item:nth-child(4) { animation-delay: 0.4s; }

.stat-number {
    font-size: clamp(2.5rem, 4vw, 4rem);
    font-weight: var(--font-weight-bold);
    letter-spacing: -0.02em;
    margin-bottom: 0.5rem;
    background: linear-gradient(135deg, #ffffff 0%, #a0a0a0 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.7);
    font-weight: var(--font-weight-medium);
}

/* ================================
   USER JOURNEY SECTION - HORIZONTAL
   ================================ */
.user-journey {
    padding: var(--spacing-xl) 0;
    background: linear-gradient(180deg, var(--color-background) 0%, var(--color-surface) 100%);
}

.journey-intro {
    text-align: center;
    font-size: 1.5rem;
    font-weight: var(--font-weight-semibold);
    color: var(--color-text);
    margin-bottom: var(--spacing-lg);
}

.journey-steps-horizontal {
    position: relative;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-lg) 0;
}

.journey-step-box {
    position: relative;
    z-index: 2;
}

.step-content-box {
    background: white;
    padding: var(--spacing-md);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--color-border);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
    height: 100%;
}

.step-content-box:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.step-title-box {
    font-size: 1.125rem;
    color: var(--color-text);
    margin-bottom: var(--spacing-sm);
    text-align: center;
    font-weight: var(--font-weight-semibold);
    line-height: 1.4;
}

.step-image {
    margin-top: var(--spacing-sm);
}

.placeholder-small {
    aspect-ratio: 16/9;
    min-height: 150px;
    background: linear-gradient(135deg, #dbeafe 0%, #bfdbfe 100%);
    border-radius: var(--border-radius-md);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    border: 2px dashed var(--color-primary);
}

.placeholder-small p {
    font-size: 1rem;
    font-weight: var(--font-weight-semibold);
    margin-bottom: 0.25rem;
    color: var(--color-primary);
}

.placeholder-small span {
    font-size: 0.75rem;
    color: var(--color-primary);
}

/* Semicircular Arrows */
.journey-arrow-horizontal {
    position: absolute;
    pointer-events: none;
    z-index: 1;
}

/* Arrow from bottom of Step 1 to bottom of Step 2 */
.arrow-bottom {
    width: 300px;
    height: 120px;
    left: calc(33.33% - 150px);
    bottom: -40px;
}

/* Arrow from top of Step 2 to top of Step 3 */
.arrow-top {
    width: 300px;
    height: 120px;
    left: calc(66.66% - 150px);
    top: -40px;
}

/* Responsive adjustments */
@media (max-width: 968px) {
    .journey-steps-horizontal {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
        padding: var(--spacing-md) 0;
    }
    
    .journey-arrow-horizontal {
        display: none;
    }
    
    .journey-intro {
        font-size: 1.25rem;
    }
}

@media (max-width: 576px) {
    .step-title-box {
        font-size: 1rem;
    }
    
    .journey-intro {
        font-size: 1.125rem;
    }
}

/* ================================
   SECTIONS
   ================================ */
section {
    padding: var(--spacing-xxl) 0;
}

.section-header {
    margin-bottom: var(--spacing-lg);
}

.section-header.center {
    text-align: center;
}

.section-title {
    margin-bottom: var(--spacing-sm);
}

.section-subtitle {
    font-size: 1.25rem;
    max-width: 700px;
}

.section-header.center .section-subtitle {
    margin: 0 auto;
}

/* ================================
   USER JOURNEY SECTION
   ================================ */
.user-journey {
    background-color: var(--color-background);
    padding: var(--spacing-xl) 0;
    overflow: visible;
}

.journey-cascade {
    position: relative;
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-lg) 0;
    min-height: 500px;
}

.journey-step {
    position: absolute;
    max-width: 320px;
    background-color: white;
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-sm);
    box-shadow: var(--shadow-md);
    border: 2px solid var(--color-border);
    transition: border-color var(--transition-normal), box-shadow var(--transition-normal);
}

.journey-step:hover {
    border-color: var(--color-primary);
    box-shadow: 0 4px 16px rgba(37, 99, 235, 0.15);
}

/* Cascade Positioning - COMPACT */
.step-1 {
    top: 0;
    left: 0;
}

.step-2 {
    top: 150px;
    left: 50%;
    margin-left: -160px; /* Half of max-width */
}

.step-3 {
    top: 300px;
    right: 0;
}

.step-title {
    font-size: 1.25rem;
    color: var(--color-text);
    margin-bottom: var(--spacing-sm);
    font-weight: var(--font-weight-semibold);
    text-align: center;
}

.step-visual {
    border-radius: var(--border-radius-md);
    overflow: hidden;
}

.placeholder-content.small {
    aspect-ratio: 16/9;
    min-height: 150px;
    background: linear-gradient(135deg, #dbeafe 0%, #bfdbfe 100%);
    border: 2px dashed var(--color-primary);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    border-radius: var(--border-radius-md);
}

.placeholder-content.small p {
    font-size: 1rem;
    font-weight: var(--font-weight-semibold);
    color: var(--color-primary);
    margin-bottom: 0.25rem;
}

.placeholder-content.small span {
    font-size: 0.75rem;
    color: var(--color-primary);
}

/* Curved Arrows */
.arrow {
    position: absolute;
    width: 180px;
    height: 120px;
    pointer-events: none;
    z-index: 1;
}

.arrow-1 {
    bottom: -80px;
    right: -160px;
}

.arrow-2 {
    bottom: -80px;
    right: -160px;
}

/* Responsive Journey */
@media (max-width: 968px) {
    .journey-cascade {
        min-height: auto;
        padding: 0;
    }
    
    .step-1, .step-2, .step-3 {
        position: static;
        margin: 0 auto var(--spacing-lg) auto;
        max-width: 100%;
    }
    
    .arrow {
        display: none;
    }
}

@media (max-width: 768px) {
    .journey-step {
        max-width: 100%;
    }
}

/* ================================
   FEATURES SECTION
   ================================ */
.features {
    background-color: var(--color-background);
}

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

.feature-card {
    background-color: var(--color-surface);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.feature-card-large {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    align-items: center;
}

.feature-icon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    border-radius: var(--border-radius-md);
    color: white;
    margin-bottom: var(--spacing-sm);
}

.feature-card .feature-icon {
    width: 48px;
    height: 48px;
}

.feature-title {
    margin-bottom: var(--spacing-sm);
    color: var(--color-text);
}

.feature-description {
    font-size: 1rem;
    line-height: 1.7;
}

.feature-visual {
    height: 100%;
    min-height: 300px;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
}

@media (max-width: 968px) {
    .feature-card-large {
        grid-template-columns: 1fr;
    }
}

/* ================================
   TECHNOLOGY SECTION
   ================================ */
.technology {
    background-color: var(--color-text);
    color: white;
}

.technology .section-title,
.technology .tech-intro {
    color: white;
}

.tech-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
}

.tech-layout-single {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.tech-layout-single .section-header {
    max-width: 800px;
    margin-bottom: var(--spacing-lg);
}

.tech-features-horizontal {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
    width: 100%;
    max-width: 1200px;
    margin-bottom: var(--spacing-xl);
}

.tech-core-capabilities {
    display: none;
}

@media (max-width: 968px) {
    .tech-features-horizontal {
        grid-template-columns: 1fr;
    }
}

.tech-intro {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-lg);
    color: rgba(255, 255, 255, 0.8);
}

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

.tech-feature {
    padding: var(--spacing-md);
    background-color: rgba(255, 255, 255, 0.05);
    border-radius: var(--border-radius-md);
    border-left: 3px solid var(--color-primary);
}

.tech-feature h4 {
    color: white;
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

.tech-feature p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 1rem;
}

.tech-visual {
    height: 100%;
    min-height: 400px;
}

.tech-visual .placeholder-content {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.6);
}

.tech-visual .placeholder-content p {
    color: white;
}

@media (max-width: 968px) {
    .tech-layout {
        grid-template-columns: 1fr;
    }
}

/* ================================
   IMPACT SECTION
   ================================ */
.impact {
    background-color: var(--color-surface);
}

.testimonials {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.testimonial-card {
    background-color: white;
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.testimonial-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.testimonial-quote {
    font-size: 1.125rem;
    line-height: 1.7;
    color: var(--color-text);
    margin-bottom: var(--spacing-md);
    font-style: italic;
}

.testimonial-quote::before {
    content: '"';
    font-size: 3rem;
    color: var(--color-primary);
    line-height: 0;
    display: block;
    margin-bottom: 0.5rem;
}

.author-name {
    font-weight: var(--font-weight-semibold);
    color: var(--color-text);
    margin-bottom: 0.25rem;
}

.author-title {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
}

.author-org {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
}

/* ================================
   LOGO MARQUEE
   ================================ */
.logo-marquee {
    overflow: hidden;
    padding: var(--spacing-lg) 0;
    background-color: white;
    border-radius: var(--border-radius-lg);
}

.marquee-content {
    display: flex;
    gap: var(--spacing-xl);
    animation: marquee 30s linear infinite;
}

.partner-logo {
    flex-shrink: 0;
    padding: var(--spacing-md) var(--spacing-lg);
    background-color: var(--color-surface);
    border-radius: var(--border-radius-sm);
    font-size: 1rem;
    font-weight: var(--font-weight-medium);
    color: var(--color-text-secondary);
    white-space: nowrap;
}

@keyframes marquee {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

/* ================================
   CTA SECTION
   ================================ */
.cta-section {
    background: linear-gradient(135deg, var(--color-text) 0%, #2c2c2e 100%);
    color: white;
}

.cta-content {
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

.cta-title {
    color: white;
    margin-bottom: var(--spacing-sm);
}

.cta-subtitle {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: var(--spacing-xl);
}

.cta-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.cta-card {
    background-color: rgba(255, 255, 255, 0.05);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all var(--transition-normal);
}

.cta-card:hover {
    background-color: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.2);
    transform: translateY(-4px);
}

.cta-card h3 {
    color: white;
    margin-bottom: var(--spacing-sm);
}

.cta-card p {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: var(--spacing-md);
}

/* ================================
   FORM STYLES
   ================================ */
.contact-form {
    background-color: rgba(255, 255, 255, 0.08);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.15);
    max-width: 800px;
    margin: 0 auto;
}

.contact-form h3 {
    color: white;
    margin-bottom: var(--spacing-md);
    text-align: center;
    font-size: 1.75rem;
}

.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 {
    position: relative;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 1.25rem 1rem;
    background-color: rgba(255, 255, 255, 0.15);
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--border-radius-md);
    color: white;
    font-size: 1.0625rem;
    font-family: var(--font-primary);
    transition: all var(--transition-fast);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: rgba(255, 255, 255, 0.5);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--color-primary);
    background-color: rgba(255, 255, 255, 0.2);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-group label {
    position: absolute;
    left: 1rem;
    top: 1.25rem;
    color: rgba(255, 255, 255, 0.7);
    font-size: 1.0625rem;
    font-weight: var(--font-weight-medium);
    transition: all var(--transition-fast);
    pointer-events: none;
    background-color: transparent;
}

.form-group input:focus + label,
.form-group textarea:focus + label,
.form-group select:focus + label,
.form-group input:not(:placeholder-shown) + label,
.form-group textarea:not(:placeholder-shown) + label,
.form-group select:valid + label {
    top: -0.75rem;
    left: 0.75rem;
    font-size: 0.875rem;
    background-color: var(--color-text);
    padding: 0.25rem 0.75rem;
    color: white;
    border-radius: 4px;
}

.form-group select {
    cursor: pointer;
    color: rgba(255, 255, 255, 0.7);
}

.form-group select:valid {
    color: white;
}

.form-group select option {
    background-color: var(--color-text);
    color: white;
    padding: 0.75rem;
}

.form-group textarea {
    min-height: 150px;
    resize: vertical;
}

.form-success {
    display: none;
    padding: var(--spacing-md);
    background-color: rgba(76, 217, 100, 0.2);
    border: 1px solid rgba(76, 217, 100, 0.5);
    border-radius: var(--border-radius-sm);
    text-align: center;
}

.form-success.show {
    display: block;
}

.form-success p {
    color: #4cd964;
    margin: 0;
}

@media (max-width: 768px) {
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .contact-form {
        padding: var(--spacing-md);
    }
    
    .form {
        gap: var(--spacing-md);
    }
}

/* ================================
   FOOTER
   ================================ */
.footer {
    background-color: var(--color-surface);
    padding: var(--spacing-xl) 0 var(--spacing-md);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.footer-logo {
    font-size: 1.5rem;
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-sm);
    color: var(--color-text);
}

.footer-tagline {
    color: var(--color-text-secondary);
    font-size: 0.875rem;
}

.footer-section h4 {
    font-size: 0.875rem;
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-sm);
    color: var(--color-text);
}

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

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section ul li a {
    color: var(--color-text-secondary);
    font-size: 0.875rem;
    transition: color var(--transition-fast);
}

.footer-section ul li a:hover {
    color: var(--color-primary);
    opacity: 1;
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-border);
}

.footer-bottom p {
    color: var(--color-text-secondary);
    font-size: 0.875rem;
}

@media (max-width: 968px) {
    .footer-content {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 576px) {
    .footer-content {
        grid-template-columns: 1fr;
    }
}

/* ================================
   RESPONSIVE ADJUSTMENTS
   ================================ */
@media (max-width: 768px) {
    :root {
        --spacing-lg: 3rem;
        --spacing-xl: 4rem;
        --spacing-xxl: 5rem;
    }
    
    section {
        padding: var(--spacing-lg) 0;
    }
    
    .hero {
        padding: calc(44px + var(--spacing-lg)) var(--spacing-sm) var(--spacing-lg);
    }
    
    .hero-subtitle {
        font-size: 1.125rem;
    }
    
    .feature-grid {
        grid-template-columns: 1fr;
    }
}

/* ================================
   SCROLL ANIMATIONS
   ================================ */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}