/* RoboShine Landing Page - Premium Dark Theme */

/* CSS Reset & Variables */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Dark Color Palette */
    --bg-primary: #000000;
    --bg-secondary: #0A0A0F;
    --bg-card: #0F1419;
    --bg-elevated: #151922;

    /* Blue Accents */
    --primary-blue: #0EA5E9;
    --glow-blue: #3B82F6;
    --deep-blue: #1E3A8A;
    --highlight-blue: #60A5FA;
    --muted-blue: #1E40AF;

    /* Text Colors */
    --text-primary: #F8FAFC;
    --text-secondary: #94A3B8;
    --text-muted: #64748B;
    --text-accent: #0EA5E9;

    /* Border Colors */
    --border-subtle: rgba(59, 130, 246, 0.1);
    --border-medium: rgba(59, 130, 246, 0.2);
    --border-bright: rgba(59, 130, 246, 0.4);

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

    /* Spacing */
    --container-width: 1200px;
    --section-padding: 120px;
    --section-padding-mobile: 60px;

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-medium: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* Base Styles */
html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg-primary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    position: relative;
}

/* Subtle noise texture overlay */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image:
        radial-gradient(circle at 20% 50%, rgba(59, 130, 246, 0.03) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(14, 165, 233, 0.02) 0%, transparent 50%);
    pointer-events: none;
    z-index: 0;
}

/* Container */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
    position: relative;
    z-index: 1;
}

/* Navigation */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-subtle);
    transition: var(--transition-medium);
}

.nav.scrolled {
    background: rgba(0, 0, 0, 0.95);
    border-bottom-color: var(--border-medium);
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 800;
    font-size: 20px;
    transition: var(--transition-fast);
}

.nav-logo:hover {
    color: var(--primary-blue);
    filter: drop-shadow(0 0 8px rgba(14, 165, 233, 0.4));
}

.logo-icon {
    width: 40px;
    height: 40px;
    border-radius: 8px;
    object-fit: cover;
    border: 1px solid var(--border-medium);
    box-shadow: 0 0 16px rgba(59, 130, 246, 0.3);
}

.logo-text {
    font-weight: 800;
    letter-spacing: -0.02em;
}

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

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: var(--transition-fast);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 32px;
}

/* Hero Section */
.hero {
    padding-top: 160px;
    padding-bottom: var(--section-padding);
    min-height: 90vh;
    display: flex;
    align-items: center;
    position: relative;
    background:
        radial-gradient(circle at 20% 50%, rgba(59, 130, 246, 0.08), transparent 50%),
        radial-gradient(circle at 80% 50%, rgba(14, 165, 233, 0.06), transparent 50%),
        linear-gradient(135deg, #000000 0%, #0A1128 50%, #000814 100%);
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 100%;
    background: radial-gradient(circle at 30% 40%, rgba(59, 130, 246, 0.12), transparent 40%);
    animation: heroPulse 8s ease-in-out infinite;
}

@keyframes heroPulse {
    0%, 100% { opacity: 0.3; }
    50% { opacity: 0.6; }
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-title {
    font-size: 64px;
    font-weight: 900;
    line-height: 1.1;
    margin-bottom: 24px;
    letter-spacing: -0.02em;
    background: linear-gradient(135deg, #F8FAFC 0%, #94A3B8 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.rotating-text-wrapper {
    position: relative;
    display: inline-block;
    min-width: 350px;
}

.rotating-text {
    display: inline-block;
    background: linear-gradient(135deg, #3B82F6 0%, #0EA5E9 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 900;
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.3s ease, transform 0.3s ease;
    filter: drop-shadow(0 0 24px rgba(59, 130, 246, 0.5));
}

.rotating-text.fade-out {
    opacity: 0;
    transform: translateY(-10px);
}

.hero-subtitle {
    font-size: 20px;
    line-height: 1.6;
    color: var(--text-secondary);
    margin-bottom: 40px;
    max-width: 540px;
}

.hero-cta {
    margin-bottom: 32px;
}

.email-form {
    display: flex;
    gap: 12px;
    max-width: 540px;
}

.email-input {
    flex: 1;
    padding: 16px 20px;
    background: rgba(15, 20, 25, 0.6);
    border: 2px solid var(--border-medium);
    border-radius: 12px;
    font-size: 16px;
    font-family: var(--font-family);
    color: var(--text-primary);
    transition: var(--transition-fast);
    backdrop-filter: blur(10px);
}

.email-input::placeholder {
    color: var(--text-muted);
}

.email-input:focus {
    outline: none;
    border-color: var(--glow-blue);
    box-shadow: 0 0 24px rgba(59, 130, 246, 0.3);
}

.hero-image {
    position: relative;
}

.hero-image::before {
    content: '';
    position: absolute;
    inset: -40px;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.2), transparent 70%);
    z-index: -1;
    animation: imageGlow 3s ease-in-out infinite;
}

@keyframes imageGlow {
    0%, 100% { opacity: 0.4; }
    50% { opacity: 0.8; }
}

.humanoid-image {
    width: 100%;
    height: auto;
    border-radius: 24px;
    border: 1px solid var(--border-medium);
    box-shadow:
        0 20px 60px rgba(0, 0, 0, 0.6),
        0 0 48px rgba(59, 130, 246, 0.2);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 14px 28px;
    border: none;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 700;
    font-family: var(--font-family);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
    text-align: center;
    position: relative;
}

.btn-primary {
    background: linear-gradient(135deg, #3B82F6, #0EA5E9);
    color: var(--text-primary);
    box-shadow:
        0 4px 16px rgba(59, 130, 246, 0.4),
        0 0 32px rgba(59, 130, 246, 0.2),
        inset 0 1px 0 rgba(255, 255, 255, 0.2);
}

.btn-primary:hover {
    background: linear-gradient(135deg, #2563EB, #0284C7);
    transform: translateY(-2px);
    box-shadow:
        0 8px 24px rgba(59, 130, 246, 0.6),
        0 0 48px rgba(59, 130, 246, 0.4),
        inset 0 1px 0 rgba(255, 255, 255, 0.3);
}

.btn-lg {
    padding: 16px 32px;
    font-size: 18px;
}

.btn-block {
    width: 100%;
}

/* Section Styles */
.section {
    padding: var(--section-padding) 0;
    position: relative;
}

.section-light {
    background:
        linear-gradient(180deg, rgba(10, 10, 15, 0.5) 0%, rgba(15, 20, 25, 0.3) 100%),
        var(--bg-primary);
}

.section-dark {
    background:
        radial-gradient(circle at 50% 0%, rgba(59, 130, 246, 0.05), transparent 50%),
        var(--bg-secondary);
    color: var(--text-primary);
    position: relative;
}

.section-dark::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: repeating-linear-gradient(
        0deg,
        transparent,
        transparent 2px,
        rgba(59, 130, 246, 0.02) 2px,
        rgba(59, 130, 246, 0.02) 4px
    );
    pointer-events: none;
}

.section-cta {
    background:
        radial-gradient(circle at 50% 50%, rgba(59, 130, 246, 0.2), transparent 70%),
        linear-gradient(135deg, var(--deep-blue) 0%, var(--muted-blue) 100%);
    color: var(--text-primary);
    text-align: center;
}

.section-header {
    margin-bottom: 64px;
    position: relative;
    z-index: 1;
}

.section-header.center {
    text-align: center;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    margin-bottom: 64px;
}

.eyebrow {
    display: inline-block;
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--primary-blue);
    margin-bottom: 16px;
    padding: 6px 16px;
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid var(--border-bright);
    border-radius: 24px;
    box-shadow: 0 0 16px rgba(59, 130, 246, 0.2);
}

.section-title {
    font-size: 48px;
    font-weight: 900;
    line-height: 1.2;
    margin-bottom: 24px;
    letter-spacing: -0.02em;
    background: linear-gradient(135deg, #F8FAFC 0%, #CBD5E1 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle,
.section-description {
    font-size: 20px;
    line-height: 1.6;
    color: var(--text-secondary);
}

/* Grid Layouts */
.grid {
    display: grid;
    gap: 32px;
    position: relative;
    z-index: 1;
}

.grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

.grid-4 {
    grid-template-columns: repeat(4, 1fr);
}

/* Feature Cards */
.feature-card {
    padding: 32px;
    background: linear-gradient(135deg, rgba(15, 20, 25, 0.6), rgba(10, 10, 15, 0.8));
    border: 1px solid var(--border-medium);
    border-radius: 16px;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    transition: all var(--transition-medium);
    position: relative;
    box-shadow:
        0 4px 24px rgba(0, 0, 0, 0.4),
        inset 0 1px 0 rgba(255, 255, 255, 0.03);
}

.feature-card::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 16px;
    padding: 1px;
    background: linear-gradient(135deg, transparent, rgba(59, 130, 246, 0.2), transparent);
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    opacity: 0;
    transition: opacity var(--transition-medium);
}

.feature-card:hover {
    border-color: var(--border-bright);
    transform: translateY(-4px);
    box-shadow:
        0 8px 32px rgba(59, 130, 246, 0.3),
        0 0 48px rgba(59, 130, 246, 0.15),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.feature-card:hover::before {
    opacity: 1;
}

.feature-icon {
    width: 48px;
    height: 48px;
    margin-bottom: 20px;
    color: var(--glow-blue);
    filter: drop-shadow(0 0 12px rgba(59, 130, 246, 0.5));
}

.feature-icon svg {
    width: 100%;
    height: 100%;
}

.feature-title {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.feature-description {
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-secondary);
}

/* Solution Diagram */
.solution-diagram {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 40px;
    margin: 80px 0;
    flex-wrap: wrap;
    position: relative;
    z-index: 1;
}

.solution-step {
    flex: 1;
    min-width: 200px;
    text-align: center;
    padding: 32px;
    background: rgba(15, 20, 25, 0.4);
    border: 2px solid var(--border-medium);
    border-radius: 16px;
    backdrop-filter: blur(20px);
    transition: all var(--transition-medium);
}

.solution-step:hover {
    border-color: var(--border-bright);
    transform: translateY(-4px);
}

.solution-step.highlight {
    background:
        radial-gradient(circle at center, rgba(59, 130, 246, 0.15), transparent 70%),
        rgba(15, 20, 25, 0.6);
    border-color: var(--glow-blue);
    box-shadow:
        0 8px 32px rgba(59, 130, 246, 0.4),
        0 0 64px rgba(59, 130, 246, 0.2);
    position: relative;
}

.solution-step.highlight::before {
    content: '';
    position: absolute;
    inset: -20px;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.2), transparent 70%);
    z-index: -1;
    animation: solutionGlow 3s ease-in-out infinite;
}

@keyframes solutionGlow {
    0%, 100% { opacity: 0.5; }
    50% { opacity: 1; }
}

.solution-icon,
.solution-icon-large {
    width: 64px;
    height: 64px;
    margin: 0 auto 20px;
    color: var(--highlight-blue);
    filter: drop-shadow(0 0 16px rgba(96, 165, 250, 0.5));
}

.solution-icon svg {
    width: 100%;
    height: 100%;
}

.roboshine-icon {
    width: 80px;
    height: 80px;
    border-radius: 12px;
    object-fit: cover;
    border: 2px solid var(--border-bright);
    box-shadow: 0 0 32px rgba(59, 130, 246, 0.5);
}

.solution-step h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.solution-step p {
    font-size: 14px;
    color: var(--text-secondary);
}

.solution-arrow {
    font-size: 32px;
    color: var(--glow-blue);
    font-weight: 300;
    filter: drop-shadow(0 0 12px rgba(59, 130, 246, 0.6));
}

/* Process Cards */
.process-card {
    background: rgba(15, 20, 25, 0.4);
    border: 2px solid var(--border-medium);
    border-radius: 16px;
    padding: 40px;
    transition: all var(--transition-medium);
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(10px);
}

.process-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--glow-blue), transparent);
    opacity: 0;
    transition: opacity var(--transition-medium);
}

.process-card:hover {
    border-color: var(--border-bright);
    box-shadow: 0 8px 24px rgba(59, 130, 246, 0.2);
    transform: translateY(-2px);
}

.process-card:hover::before {
    opacity: 1;
}

.process-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: linear-gradient(135deg, #3B82F6, #0EA5E9);
    color: var(--text-primary);
    font-weight: 900;
    font-size: 20px;
    margin-bottom: 20px;
    border: 2px solid rgba(96, 165, 250, 0.3);
    box-shadow:
        0 4px 16px rgba(59, 130, 246, 0.4),
        0 0 24px rgba(59, 130, 246, 0.3);
}

.process-card h3 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.process-list {
    list-style: none;
    padding: 0;
}

.process-list li {
    padding: 10px 0 10px 32px;
    position: relative;
    color: var(--text-secondary);
    line-height: 1.6;
}

.process-list li:before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary-blue);
    font-weight: 700;
    font-size: 18px;
    text-shadow: 0 0 8px rgba(14, 165, 233, 0.5);
}

/* Example Visual */
.example-visual {
    margin-top: 64px;
    text-align: center;
    position: relative;
    z-index: 1;
}

.example-image {
    width: 100%;
    max-width: 800px;
    border-radius: 16px;
    border: 1px solid var(--border-medium);
    box-shadow:
        0 20px 60px rgba(0, 0, 0, 0.6),
        0 0 48px rgba(59, 130, 246, 0.15);
}

.example-caption {
    margin-top: 20px;
    font-size: 14px;
    color: var(--text-muted);
    font-style: italic;
}

/* Vertical Grid */
.vertical-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 24px;
    margin-top: 64px;
    position: relative;
    z-index: 1;
}

.vertical-card {
    background: rgba(15, 20, 25, 0.4);
    border: 1px solid var(--border-medium);
    border-radius: 16px;
    padding: 32px;
    transition: all var(--transition-medium);
    backdrop-filter: blur(10px);
    position: relative;
    overflow: hidden;
}

.vertical-card::after {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 50% 0%, rgba(59, 130, 246, 0.1), transparent 70%);
    opacity: 0;
    transition: opacity var(--transition-medium);
}

.vertical-card:hover {
    border-color: var(--border-bright);
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(59, 130, 246, 0.2);
}

.vertical-card:hover::after {
    opacity: 1;
}

.vertical-card.primary {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.15), rgba(14, 165, 233, 0.1));
    border-color: var(--border-bright);
    box-shadow: 0 8px 24px rgba(59, 130, 246, 0.2);
}

.vertical-icon {
    font-size: 48px;
    margin-bottom: 16px;
    filter: drop-shadow(0 4px 8px rgba(59, 130, 246, 0.3));
}

.vertical-tag {
    display: inline-block;
    padding: 4px 12px;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.2), rgba(14, 165, 233, 0.2));
    border: 1px solid var(--border-bright);
    color: var(--highlight-blue);
    border-radius: 20px;
    font-size: 11px;
    font-weight: 700;
    margin-bottom: 12px;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    box-shadow: 0 0 16px rgba(59, 130, 246, 0.3);
}

.vertical-card h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.vertical-card ul {
    list-style: none;
    padding: 0;
}

.vertical-card ul li {
    padding: 8px 0;
    color: var(--text-secondary);
    font-size: 14px;
    position: relative;
    padding-left: 20px;
}

.vertical-card ul li:before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--primary-blue);
    font-size: 12px;
}

/* Tech Grid */
.tech-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    margin-top: 64px;
    position: relative;
    z-index: 1;
}

.tech-card {
    padding: 40px;
    background: linear-gradient(135deg, rgba(15, 20, 25, 0.6), rgba(10, 10, 15, 0.8));
    border: 2px solid var(--border-medium);
    border-radius: 16px;
    transition: all var(--transition-medium);
    backdrop-filter: blur(20px);
    position: relative;
}

.tech-card::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, #3B82F6, #0EA5E9);
    box-shadow: 0 0 16px rgba(59, 130, 246, 0.6);
    border-radius: 0 0 16px 16px;
}

.tech-card:hover {
    border-color: var(--border-bright);
    box-shadow: 0 12px 32px rgba(59, 130, 246, 0.2);
    transform: translateY(-4px);
}

.tech-card h3 {
    font-size: 24px;
    font-weight: 700;
    background: linear-gradient(135deg, #3B82F6, #0EA5E9);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 16px;
}

.tech-card p {
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-secondary);
}

/* CTA Content */
.cta-content {
    max-width: 600px;
    margin: 0 auto;
}

.cta-content h2 {
    font-size: 48px;
    font-weight: 900;
    margin-bottom: 20px;
    letter-spacing: -0.02em;
}

.cta-content p {
    font-size: 20px;
    margin-bottom: 40px;
    opacity: 0.9;
}

/* FAQ Section */
.faq-container {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.faq-item {
    border-bottom: 1px solid var(--border-subtle);
    margin-bottom: 0;
    transition: all var(--transition-medium);
}

.faq-item.active {
    background: rgba(59, 130, 246, 0.05);
    border-radius: 8px;
    padding: 0 16px;
    border-bottom-color: transparent;
}

.faq-question {
    width: 100%;
    padding: 24px 0;
    background: none;
    border: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    font-size: 18px;
    font-weight: 600;
    text-align: left;
    color: var(--text-primary);
    transition: var(--transition-fast);
}

.faq-question:hover {
    color: var(--primary-blue);
}

.faq-icon {
    font-size: 24px;
    font-weight: 300;
    color: var(--glow-blue);
    transition: var(--transition-fast);
}

.faq-item.active .faq-icon {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-medium);
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

.faq-answer p {
    padding-bottom: 24px;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Footer */
.footer {
    background:
        linear-gradient(180deg, rgba(10, 10, 15, 0.9) 0%, #000000 100%);
    color: var(--text-primary);
    padding: 80px 0 32px;
    border-top: 1px solid var(--border-subtle);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 3fr;
    gap: 80px;
    margin-bottom: 64px;
}

.footer-brand {
    max-width: 300px;
}

.footer-logo {
    width: 48px;
    height: 48px;
    border-radius: 8px;
    margin-bottom: 16px;
    border: 1px solid var(--border-medium);
    box-shadow: 0 0 16px rgba(59, 130, 246, 0.2);
}

.footer-tagline {
    font-size: 14px;
    color: var(--text-muted);
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.footer-column h4 {
    font-size: 14px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.footer-column ul {
    list-style: none;
    padding: 0;
}

.footer-column ul li {
    margin-bottom: 12px;
}

.footer-column a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 14px;
    transition: var(--transition-fast);
}

.footer-column a:hover {
    color: var(--primary-blue);
    text-shadow: 0 0 8px rgba(14, 165, 233, 0.3);
}

.footer-bottom {
    padding-top: 32px;
    border-top: 1px solid rgba(59, 130, 246, 0.1);
    text-align: center;
    color: var(--text-muted);
    font-size: 14px;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(10px);
    z-index: 2000;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: linear-gradient(135deg, rgba(15, 20, 25, 0.95), rgba(10, 10, 15, 0.98));
    border: 1px solid var(--border-bright);
    border-radius: 24px;
    padding: 48px;
    max-width: 540px;
    width: 100%;
    position: relative;
    animation: modalSlideIn 0.3s ease;
    backdrop-filter: blur(20px);
    box-shadow:
        0 20px 60px rgba(0, 0, 0, 0.8),
        0 0 80px rgba(59, 130, 246, 0.2);
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(20px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.modal-close {
    position: absolute;
    top: 20px;
    right: 20px;
    background: none;
    border: none;
    font-size: 32px;
    cursor: pointer;
    color: var(--text-secondary);
    transition: var(--transition-fast);
    padding: 0;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-close:hover {
    color: var(--primary-blue);
    transform: rotate(90deg);
}

.modal-content h2 {
    font-size: 32px;
    font-weight: 900;
    margin-bottom: 12px;
    background: linear-gradient(135deg, #F8FAFC 0%, #94A3B8 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.modal-content > p {
    color: var(--text-secondary);
    margin-bottom: 32px;
}

/* Form Styles */
.demo-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group label {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.form-group input,
.form-group textarea {
    padding: 14px 16px;
    background: rgba(15, 20, 25, 0.6);
    border: 2px solid var(--border-medium);
    border-radius: 12px;
    font-size: 16px;
    font-family: var(--font-family);
    color: var(--text-primary);
    transition: var(--transition-fast);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-muted);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--glow-blue);
    box-shadow: 0 0 24px rgba(59, 130, 246, 0.3);
}

.form-group textarea {
    resize: vertical;
}

.form-message {
    padding: 12px;
    border-radius: 8px;
    font-size: 14px;
    text-align: center;
    display: none;
}

.form-message.success {
    display: block;
    background: rgba(16, 185, 129, 0.1);
    color: #10B981;
    border: 1px solid rgba(16, 185, 129, 0.3);
}

.form-message.error {
    display: block;
    background: rgba(239, 68, 68, 0.1);
    color: #EF4444;
    border: 1px solid rgba(239, 68, 68, 0.3);
}

/* Responsive Design */
@media (max-width: 1024px) {
    :root {
        --section-padding: 80px;
    }

    .hero-title {
        font-size: 48px;
    }

    .section-title {
        font-size: 40px;
    }

    .grid-3,
    .grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }

    .tech-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    :root {
        --section-padding: 60px;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: 80px;
        left: 0;
        right: 0;
        background: rgba(0, 0, 0, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 24px;
        border-bottom: 1px solid var(--border-medium);
        transform: translateY(-100%);
        opacity: 0;
        transition: var(--transition-medium);
    }

    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
    }

    .hero {
        padding-top: 120px;
        padding-bottom: 60px;
    }

    .hero-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .hero-title {
        font-size: 36px;
    }

    .rotating-text-wrapper {
        min-width: 250px;
    }

    .hero-subtitle {
        font-size: 18px;
    }

    .email-form {
        flex-direction: column;
    }

    .section-title {
        font-size: 32px;
    }

    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
    }

    .solution-diagram {
        flex-direction: column;
        gap: 20px;
    }

    .solution-arrow {
        transform: rotate(90deg);
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .footer-links {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .modal-content {
        padding: 32px 24px;
    }

    .cta-content h2 {
        font-size: 36px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

    .hero-title {
        font-size: 28px;
    }

    .section-title {
        font-size: 28px;
    }

    .rotating-text-wrapper {
        min-width: 200px;
    }
}

/* Utility Classes */
.u-text-center {
    text-align: center;
}

.u-mb-sm {
    margin-bottom: 16px;
}

.u-mb-md {
    margin-bottom: 24px;
}

.u-mb-lg {
    margin-bottom: 32px;
}

.u-mt-sm {
    margin-top: 16px;
}

.u-mt-md {
    margin-top: 24px;
}

.u-mt-lg {
    margin-top: 32px;
}