/* ===========================
   Kalpasutra Corporation
   Modern CSS with Animations
   =========================== */

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

/* === CSS Custom Properties === */
:root {
    /* Modern Color Palette */
    --primary-deep-blue: #0A2540;
    --accent-cyan: #00D4FF;
    --gradient-purple-start: #6366F1;
    --gradient-purple-end: #8B5CF6;
    --success-green: #10B981;
    --warning-amber: #F59E0B;

    /* Grays */
    --gray-50: #F9FAFB;
    --gray-100: #F3F4F6;
    --gray-200: #E5E7EB;
    --gray-300: #D1D5DB;
    --gray-400: #9CA3AF;
    --gray-500: #6B7280;
    --gray-600: #4B5563;
    --gray-700: #374151;
    --gray-800: #1F2937;
    --gray-900: #111827;
    --white: #FFFFFF;
    --black: #000000;

    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-headings: 'Plus Jakarta Sans', 'Poppins', sans-serif;

    /* Spacing */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    --space-2xl: 48px;
    --space-3xl: 64px;
    --space-4xl: 96px;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);

    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-2xl: 24px;
    --radius-full: 9999px;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 300ms ease;
    --transition-slow: 500ms ease;

    /* Z-index */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
}

/* === Base Styles === */
html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-primary);
    font-size: 1rem;
    line-height: 1.7;
    color: var(--gray-700);
    background: var(--gray-50);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* === Typography === */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-headings);
    font-weight: 700;
    line-height: 1.2;
    color: var(--gray-900);
    margin-bottom: 1rem;
}

h1 { font-size: 3.5rem; }
h2 { font-size: 2.5rem; }
h3 { font-size: 1.75rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.125rem; }
h6 { font-size: 1rem; }

p {
    margin-bottom: 1rem;
}

.lead {
    font-size: 1.25rem;
    font-weight: 400;
    color: var(--gray-600);
    line-height: 1.8;
}

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

a:hover {
    color: var(--primary-deep-blue);
}

/* === Container === */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* === Skip to Content (Accessibility) === */
.skip-to-content {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--primary-deep-blue);
    color: var(--white);
    padding: 8px 16px;
    text-decoration: none;
    z-index: 100;
}

.skip-to-content:focus {
    top: 0;
}

/* ===========================
   Navigation
   =========================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: var(--shadow-sm);
    z-index: var(--z-sticky);
    padding: 1rem 0;
    transition: all var(--transition-base);
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.95);
    box-shadow: var(--shadow-md);
}

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

.nav-brand a {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
}

.logo-icon {
    width: 40px;
    height: 40px;
    flex-shrink: 0;
}

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

.nav-brand .logo {
    font-family: var(--font-headings);
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary-deep-blue);
    letter-spacing: -0.5px;
    line-height: 1;
}

.nav-brand .tagline {
    font-size: 0.7rem;
    color: var(--gray-500);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    line-height: 1;
    margin-top: 2px;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

.nav-link {
    font-weight: 500;
    font-size: 0.95rem;
    color: var(--gray-700);
    transition: color var(--transition-base);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-cyan);
    transition: width var(--transition-base);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.nav-link:hover,
.nav-link.active {
    color: var(--accent-cyan);
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.mobile-menu-toggle span {
    width: 25px;
    height: 3px;
    background: var(--gray-900);
    transition: all var(--transition-base);
    border-radius: 2px;
}

/* ===========================
   Buttons
   =========================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 32px;
    font-weight: 600;
    font-size: 1rem;
    border-radius: var(--radius-lg);
    border: none;
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
    white-space: nowrap;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-deep-blue), var(--accent-cyan));
    color: var(--white);
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

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

.btn-secondary:hover {
    background: var(--primary-deep-blue);
    color: var(--white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-large {
    padding: 16px 40px;
    font-size: 1.1rem;
}

.btn-full {
    width: 100%;
}

.cta-button {
    background: var(--accent-cyan);
    color: var(--white) !important;
    padding: 10px 24px;
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
}

.cta-button:hover {
    background: var(--primary-deep-blue);
    color: var(--white) !important;
    transform: translateY(-2px);
}

.cta-button::after {
    display: none;
}

/* ===========================
   Hero Section
   =========================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-deep-blue) 0%, #0f3a5f 100%);
    padding-top: 80px;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    overflow: hidden;
}

/* Animated Gradient Orbs */
.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.4;
    animation: float 20s infinite ease-in-out;
}

.orb-1 {
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, var(--accent-cyan), transparent);
    top: -200px;
    left: -200px;
    animation-delay: 0s;
}

.orb-2 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, var(--gradient-purple-start), transparent);
    bottom: -100px;
    right: -100px;
    animation-delay: 7s;
}

.orb-3 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, var(--warning-amber), transparent);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation-delay: 14s;
}

@keyframes float {
    0%, 100% {
        transform: translate(0, 0) scale(1);
    }
    25% {
        transform: translate(50px, -50px) scale(1.1);
    }
    50% {
        transform: translate(-30px, 30px) scale(0.9);
    }
    75% {
        transform: translate(30px, 50px) scale(1.05);
    }
}

/* Grid Pattern */
.grid-pattern {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    opacity: 0.5;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

.hero-badge {
    display: inline-block;
    padding: 8px 20px;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-full);
    color: var(--white);
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 2rem;
    animation: fadeInDown 0.6s ease;
}

.hero-title {
    font-size: 3.5rem;
    color: var(--white);
    margin-bottom: 1.5rem;
    line-height: 1.2;
    animation: fadeInUp 0.6s ease 0.2s backwards;
}

.gradient-text {
    background: linear-gradient(135deg, var(--accent-cyan), var(--gradient-purple-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.5rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 3rem;
    line-height: 1.6;
    animation: fadeInUp 0.6s ease 0.4s backwards;
}

.hero-cta {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 4rem;
    animation: fadeInUp 0.6s ease 0.6s backwards;
}

/* Hero Stats */
.hero-stats {
    display: flex;
    justify-content: center;
    gap: 4rem;
    animation: fadeInUp 0.6s ease 0.8s backwards;
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--white);
    line-height: 1;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.7);
    text-transform: uppercase;
    letter-spacing: 1px;
}

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

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

.fade-in {
    animation: fadeInUp 0.6s ease;
}

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

.section-badge {
    display: inline-block;
    padding: 6px 16px;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(0, 212, 255, 0.1));
    color: var(--accent-cyan);
    border-radius: var(--radius-full);
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 1rem;
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 4rem;
}

.section-title {
    margin-bottom: 1rem;
    color: var(--primary-deep-blue);
}

.section-subtitle {
    font-size: 1.15rem;
    color: var(--gray-600);
}

/* ===========================
   Glass Card Effect
   =========================== */
.glass-card {
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    box-shadow: var(--shadow-lg);
    border-radius: var(--radius-xl);
}

/* ===========================
   Value Proposition
   =========================== */
.value-proposition {
    background: var(--gray-50);
    margin-top: -80px;
    position: relative;
    z-index: 10;
}

.value-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 3rem;
}

.value-card {
    text-align: center;
    padding: 2.5rem 2rem;
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.value-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-2xl);
}

.value-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    background: linear-gradient(135deg, var(--accent-cyan), var(--primary-deep-blue));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    transition: transform var(--transition-base);
}

.value-card:hover .value-icon {
    transform: scale(1.1) rotate(5deg);
}

.value-card h3 {
    margin-bottom: 1rem;
    color: var(--primary-deep-blue);
}

.value-card p {
    color: var(--gray-600);
    line-height: 1.7;
    margin-bottom: 0;
}

/* ===========================
   Services Section
   =========================== */
.services {
    background: var(--white);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2.5rem;
}

.service-card {
    background: var(--white);
    padding: 2.5rem;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    border-left: 4px solid var(--accent-cyan);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--accent-cyan), var(--gradient-purple-start));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-base);
}

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

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-2xl);
    border-left-color: var(--gradient-purple-start);
}

.service-icon-wrapper {
    margin-bottom: 1.5rem;
}

.service-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(0, 212, 255, 0.1));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-cyan);
    transition: all var(--transition-base);
}

.service-card:hover .service-icon {
    transform: scale(1.1) rotate(-5deg);
    background: linear-gradient(135deg, var(--accent-cyan), var(--gradient-purple-start));
    color: var(--white);
}

.service-number {
    font-size: 3rem;
    font-weight: 700;
    color: var(--accent-cyan);
    opacity: 0.15;
    line-height: 1;
    margin-bottom: 1rem;
}

.service-card h3 {
    margin-bottom: 1rem;
    color: var(--primary-deep-blue);
}

.service-card > p {
    color: var(--gray-600);
    margin-bottom: 1.5rem;
}

.service-features {
    list-style: none;
    padding-left: 0;
    margin-bottom: 1.5rem;
}

.service-features li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
    color: var(--gray-600);
    font-size: 0.95rem;
}

.service-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--success-green);
    font-weight: bold;
}

.service-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--accent-cyan);
    font-weight: 600;
    font-size: 0.95rem;
    transition: gap var(--transition-base);
}

.service-link:hover {
    gap: 12px;
}

/* ===========================
   Case Studies
   =========================== */
.case-studies {
    background: linear-gradient(135deg, var(--gray-50), var(--white));
}

.case-studies-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2.5rem;
}

.case-study-card {
    padding: 2.5rem;
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.case-study-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-2xl);
}

.case-study-icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
}

.case-study-card h3 {
    color: var(--primary-deep-blue);
    margin-bottom: 0.5rem;
}

.case-study-client {
    color: var(--gray-500);
    font-size: 0.9rem;
    margin-bottom: 1.5rem;
}

.case-study-metrics {
    display: flex;
    gap: 2rem;
    margin-bottom: 1.5rem;
}

.metric {
    text-align: center;
}

.metric-value {
    font-size: 2rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--accent-cyan), var(--gradient-purple-start));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
    margin-bottom: 0.5rem;
}

.metric-label {
    font-size: 0.85rem;
    color: var(--gray-600);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.case-study-card > p {
    color: var(--gray-600);
    line-height: 1.7;
    margin-bottom: 0;
}

/* ===========================
   Expertise Section
   =========================== */
.expertise {
    background: var(--white);
}

.expertise-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 3rem;
}

.expertise-category h4 {
    margin-bottom: 1.5rem;
    color: var(--primary-deep-blue);
    padding-bottom: 0.75rem;
    border-bottom: 2px solid var(--accent-cyan);
}

.tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.tech-tag {
    padding: 0.6rem 1.2rem;
    background: var(--gray-100);
    color: var(--gray-700);
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    font-weight: 500;
    transition: all var(--transition-base);
    cursor: default;
}

.tech-tag:hover {
    background: linear-gradient(135deg, var(--accent-cyan), var(--gradient-purple-start));
    color: var(--white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* ===========================
   About Section
   =========================== */
.about {
    background: var(--gray-50);
}

.about-content {
    max-width: 900px;
    margin: 0 auto;
}

.about-text h2 {
    margin-bottom: 2rem;
    color: var(--primary-deep-blue);
}

.about-text p {
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

.about-values {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin: 3rem 0;
}

.value-item {
    padding: 1.5rem;
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-base);
}

.value-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.value-icon-small {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.value-item h4 {
    color: var(--primary-deep-blue);
    margin-bottom: 0.5rem;
}

.value-item p {
    color: var(--gray-600);
    margin-bottom: 0;
    font-size: 0.95rem;
}

/* Principal Info */
.principal-info {
    padding: 2rem;
    margin-top: 3rem;
}

.principal-header {
    display: flex;
    gap: 2rem;
    margin-bottom: 1.5rem;
}

.principal-avatar {
    flex-shrink: 0;
}

.principal-details h3 {
    color: var(--primary-deep-blue);
    margin-bottom: 0.5rem;
}

.principal-title {
    font-size: 1.1rem;
    color: var(--accent-cyan);
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.principal-credentials {
    font-size: 0.95rem;
    color: var(--gray-600);
    margin-bottom: 0;
}

.link-external {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--accent-cyan);
    font-weight: 600;
    margin-top: 1rem;
    transition: gap var(--transition-base);
}

.link-external:hover {
    gap: 0.75rem;
}

/* ===========================
   Testimonials
   =========================== */
.testimonials {
    background: var(--white);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2.5rem;
}

.testimonial-card {
    padding: 2.5rem;
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.testimonial-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-2xl);
}

.rating {
    margin-bottom: 1.5rem;
    font-size: 1.2rem;
}

.testimonial-text {
    font-size: 1.05rem;
    line-height: 1.8;
    color: var(--gray-700);
    font-style: italic;
    margin-bottom: 2rem;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.author-info {
    flex: 1;
}

.author-name {
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: 0.25rem;
}

.author-company {
    font-size: 0.9rem;
    color: var(--gray-500);
}

/* ===========================
   Contact Section
   =========================== */
.contact {
    background: linear-gradient(135deg, var(--gray-50), var(--white));
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}

.contact-info h2 {
    color: var(--primary-deep-blue);
    margin-bottom: 1.5rem;
}

.contact-methods {
    margin: 3rem 0;
}

.contact-method {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
}

.contact-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--accent-cyan), var(--gradient-purple-start));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    flex-shrink: 0;
}

.contact-method h4 {
    color: var(--gray-900);
    margin-bottom: 0.5rem;
    font-size: 1rem;
}

.contact-method a {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--accent-cyan);
}

.consultation-process {
    padding: 2rem;
    margin-top: 2rem;
}

.consultation-process h4 {
    color: var(--primary-deep-blue);
    margin-bottom: 1.5rem;
}

.consultation-process ol {
    padding-left: 1.5rem;
    counter-reset: step;
}

.consultation-process li {
    margin-bottom: 1.5rem;
    line-height: 1.6;
    position: relative;
    padding-left: 1rem;
}

.consultation-process li strong {
    display: block;
    color: var(--primary-deep-blue);
    margin-bottom: 0.5rem;
}

.consultation-process li p {
    color: var(--gray-600);
    margin-bottom: 0;
}

/* Contact Form */
.contact-form-container {
    padding: 2.5rem;
}

.contact-form h3 {
    color: var(--primary-deep-blue);
    margin-bottom: 2rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    font-weight: 600;
    color: var(--gray-700);
    margin-bottom: 0.5rem;
    font-size: 0.95rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.9rem 1rem;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-md);
    font-family: var(--font-primary);
    font-size: 1rem;
    transition: all var(--transition-base);
    background: var(--white);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-cyan);
    box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1);
}

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

/* ===========================
   Footer
   =========================== */
.footer {
    background: var(--primary-deep-blue);
    color: var(--white);
    padding: 4rem 0 2rem;
}

.footer-content {
    display: grid;
    grid-template-columns: 1.5fr 2fr;
    gap: 4rem;
    margin-bottom: 3rem;
}

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.footer-logo {
    margin-bottom: 1rem;
}

.footer-brand h3 {
    color: var(--white);
    margin-bottom: 0.5rem;
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.6;
}

.tagline-small {
    font-size: 0.9rem;
    font-style: italic;
}

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

.footer-column h4 {
    color: var(--white);
    margin-bottom: 1rem;
    font-size: 1rem;
}

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

.footer-column li {
    margin-bottom: 0.75rem;
}

.footer-column a {
    color: rgba(255, 255, 255, 0.7);
    transition: color var(--transition-base);
}

.footer-column a:hover {
    color: var(--white);
}

.footer-bottom {
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.5);
    margin-bottom: 0;
}

.footer-legal {
    display: flex;
    gap: 2rem;
}

.footer-legal a {
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.9rem;
}

.footer-legal a:hover {
    color: var(--white);
}

/* ===========================
   Back to Top Button
   =========================== */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--accent-cyan), var(--gradient-purple-start));
    color: var(--white);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-xl);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    z-index: var(--z-fixed);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-2xl);
}

/* ===========================
   Scroll Animations
   =========================== */
[data-animate] {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

[data-animate="fade-up"].animated {
    animation: fadeInUp 0.6s ease forwards;
}

[data-animate="fade-right"].animated {
    animation: fadeInRight 0.6s ease forwards;
}

[data-animate="fade-left"].animated {
    animation: fadeInLeft 0.6s ease forwards;
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

/* ===========================
   Responsive Design
   =========================== */
@media (max-width: 1024px) {
    h1 { font-size: 3rem; }
    h2 { font-size: 2rem; }

    .hero-title { font-size: 3rem; }
    .hero-subtitle { font-size: 1.25rem; }

    .contact-content {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

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

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

    .mobile-menu-toggle {
        display: flex;
    }

    h1 { font-size: 2.5rem; }
    h2 { font-size: 1.75rem; }

    .hero {
        min-height: 80vh;
    }

    .hero-title { font-size: 2.5rem; }
    .hero-subtitle { font-size: 1.1rem; }

    .hero-cta {
        flex-direction: column;
        align-items: stretch;
    }

    .hero-cta .btn {
        width: 100%;
    }

    .hero-stats {
        flex-direction: column;
        gap: 2rem;
    }

    .services-grid,
    .value-grid,
    .expertise-grid,
    .case-studies-grid,
    .testimonials-grid {
        grid-template-columns: 1fr;
    }

    .principal-header {
        flex-direction: column;
        text-align: center;
        align-items: center;
    }

    .footer-links {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }

    .back-to-top {
        bottom: 1rem;
        right: 1rem;
        width: 44px;
        height: 44px;
    }
}

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

    section {
        padding: var(--space-3xl) 0;
    }

    h1 { font-size: 2rem; }
    .hero-title { font-size: 2rem; }
    .hero-subtitle { font-size: 1rem; }

    .service-card,
    .value-card,
    .case-study-card,
    .testimonial-card {
        padding: 1.5rem;
    }

    .btn {
        padding: 12px 24px;
    }

    .stat-number {
        font-size: 2rem;
    }
}

/* ===========================
   Print Styles
   =========================== */
@media print {
    .navbar,
    .hero-cta,
    .back-to-top,
    .mobile-menu-toggle {
        display: none;
    }

    body {
        background: white;
    }

    .hero-background {
        display: none;
    }
}