/* ============================================
   GDR Software Development — Design System
   High-end corporate aesthetics
   ============================================ */

/* --- Custom Properties --- */
:root {
    /* Colors */
    --color-bg: #050505;
    --color-bg-elevated: #0a0a0a;
    --color-bg-card: #0e0e0e;
    --color-bg-card-hover: #141414;
    --color-surface: #1a1a1a;
    --color-border: rgba(255, 255, 255, 0.06);
    --color-border-hover: rgba(255, 255, 255, 0.12);
    --color-border-subtle: rgba(255, 255, 255, 0.03);

    --color-text-primary: #f5f5f7;
    --color-text-secondary: #a1a1a6;
    --color-text-tertiary: #6e6e73;

    --color-accent: #2997ff;
    --color-accent-hover: #0077ed;
    --color-accent-glow: rgba(41, 151, 255, 0.15);

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
    --font-size-4xl: 2.5rem;
    --font-size-5xl: 3.5rem;
    --font-size-6xl: 4.5rem;

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    --spacing-4xl: 6rem;
    --spacing-5xl: 8rem;

    /* Layout */
    --container-max: 1200px;
    --container-padding: 1.5rem;

    /* Effects */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;

    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 40px rgba(41, 151, 255, 0.08);

    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--color-text-primary);
    background-color: var(--color-bg);
    overflow-x: hidden;
}

/* Isometric Grid Background */
body::after {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
    z-index: 0;
    background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M30 0L60 15L30 30L0 15Z' fill='none' stroke='%232997ff' stroke-width='0.3' opacity='0.08'/%3E%3Cpath d='M30 30L60 45L30 60L0 45Z' fill='none' stroke='%232997ff' stroke-width='0.3' opacity='0.08'/%3E%3C/svg%3E");
    background-size: 60px 60px;
    opacity: 0.3;
}

a {
    color: inherit;
    text-decoration: none;
}

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

button,
input,
select,
textarea {
    font-family: inherit;
    font-size: inherit;
}

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

/* --- Top Accent Line --- */
.top-accent {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--color-accent), transparent);
    z-index: 1001;
    opacity: 0.6;
}

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

/* --- Scroll Animations --- */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(32px);
    transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1),
                transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.animate-on-scroll.is-visible {
    opacity: 1;
    transform: translateY(0);
}

/* Stagger children */
.animate-on-scroll:nth-child(2) { transition-delay: 80ms; }
.animate-on-scroll:nth-child(3) { transition-delay: 160ms; }
.animate-on-scroll:nth-child(4) { transition-delay: 240ms; }
.animate-on-scroll:nth-child(5) { transition-delay: 320ms; }
.animate-on-scroll:nth-child(6) { transition-delay: 400ms; }

/* ============================================
   Navigation
   ============================================ */
.navbar {
    position: fixed;
    top: 2px;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: var(--spacing-md) 0;
    transition: background var(--transition-base),
                backdrop-filter var(--transition-base),
                border-color var(--transition-base),
                padding var(--transition-base);
    border-bottom: 1px solid transparent;
}

.navbar.is-scrolled {
    background: rgba(5, 5, 5, 0.85);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    border-bottom-color: var(--color-border);
    padding: var(--spacing-sm) 0;
}

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

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    z-index: 1001;
}

.logo-mark {
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

.logo-icon {
    color: var(--color-accent);
    flex-shrink: 0;
}

.logo-text {
    font-size: 1.4rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    color: var(--color-text-primary);
}

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

.nav-link {
    font-size: var(--font-size-sm);
    font-weight: 400;
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--color-accent);
    transition: width var(--transition-base);
}

.nav-link:hover,
.nav-link.is-active {
    color: var(--color-text-primary);
}

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

.nav-link-cta {
    color: var(--color-text-primary);
    background: var(--color-surface);
    padding: 0.5rem 1.25rem;
    border-radius: var(--radius-full);
    border: 1px solid var(--color-border);
    transition: all var(--transition-fast);
}

.nav-link-cta::after {
    display: none;
}

.nav-link-cta:hover {
    background: var(--color-bg-card-hover);
    border-color: var(--color-border-hover);
}

/* Mobile Navigation Toggle */
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
    z-index: 1001;
}

.nav-toggle span {
    display: block;
    width: 20px;
    height: 1.5px;
    background: var(--color-text-primary);
    transition: all var(--transition-base);
    transform-origin: center;
}

.nav-toggle.is-active span:nth-child(1) {
    transform: translateY(6.5px) rotate(45deg);
}

.nav-toggle.is-active span:nth-child(2) {
    opacity: 0;
}

.nav-toggle.is-active span:nth-child(3) {
    transform: translateY(-6.5px) rotate(-45deg);
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-5xl) var(--container-padding) var(--spacing-4xl);
    overflow: hidden;
}

/* Hero Watermark */
.hero-watermark {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    pointer-events: none;
    opacity: 0.5;
    z-index: 0;
}

.hero-content {
    max-width: 900px;
    text-align: center;
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 0.4rem 1.25rem;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: 500;
    color: var(--color-text-tertiary);
    margin-bottom: var(--spacing-xl);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.hero-title {
    font-size: clamp(2.75rem, 6vw, var(--font-size-6xl));
    font-weight: 700;
    line-height: 1.08;
    letter-spacing: -0.035em;
    margin-bottom: var(--spacing-xl);
    color: var(--color-text-primary);
}

.hero-title-accent {
    color: var(--color-text-secondary);
}

.hero-subtitle {
    font-size: clamp(var(--font-size-base), 2vw, var(--font-size-lg));
    line-height: 1.7;
    color: var(--color-text-secondary);
    max-width: 640px;
    margin: 0 auto var(--spacing-2xl);
    font-weight: 400;
}

.hero-actions {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    margin-bottom: var(--spacing-4xl);
    flex-wrap: wrap;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 0.875rem 1.75rem;
    font-size: var(--font-size-sm);
    font-weight: 500;
    border-radius: var(--radius-full);
    border: none;
    cursor: pointer;
    transition: all var(--transition-base);
    white-space: nowrap;
}

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

.btn-primary:hover {
    background: var(--color-accent-hover);
    box-shadow: 0 4px 24px rgba(41, 151, 255, 0.25);
}

.btn-secondary {
    background: transparent;
    color: var(--color-text-secondary);
    border: 1px solid var(--color-border);
}

.btn-secondary:hover {
    color: var(--color-text-primary);
    border-color: var(--color-border-hover);
    background: var(--color-surface);
}

.btn-large {
    padding: 1rem 2.25rem;
    font-size: var(--font-size-base);
}

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

/* Hero Capabilities */
.hero-capabilities {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xl);
}

.hero-capability {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text-tertiary);
    letter-spacing: 0.01em;
}

.hero-capability svg {
    color: var(--color-accent);
    opacity: 0.7;
}

.hero-capability-divider {
    width: 1px;
    height: 20px;
    background: var(--color-border);
}

/* ============================================
   Section Shared Styles
   ============================================ */
.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--spacing-4xl);
}

.section-tag {
    display: inline-block;
    font-size: var(--font-size-xs);
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--color-accent);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.section-title {
    font-size: clamp(var(--font-size-3xl), 4vw, var(--font-size-4xl));
    font-weight: 700;
    letter-spacing: -0.035em;
    line-height: 1.15;
    margin-bottom: var(--spacing-lg);
    color: var(--color-text-primary);
}

.section-description {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    line-height: 1.7;
    font-weight: 400;
}

/* ============================================
   Services Section
   ============================================ */
.services-section {
    padding: var(--spacing-5xl) 0;
    border-top: 1px solid var(--color-border);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

.service-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-2xl);
    transition: all var(--transition-slow);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(41, 151, 255, 0.3), transparent);
    opacity: 0;
    transition: opacity var(--transition-slow);
}

.service-card:hover {
    background: var(--color-bg-card-hover);
    border-color: var(--color-border-hover);
    transform: perspective(800px) rotateX(1deg) rotateY(-1deg) translateY(-2px);
}

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

.service-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-xl);
    color: var(--color-accent);
    transition: all var(--transition-base);
}

.service-card:hover .service-icon {
    border-color: var(--color-border-hover);
    box-shadow: 0 0 20px rgba(41, 151, 255, 0.1);
}

.service-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    letter-spacing: -0.01em;
}

.service-description {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: var(--spacing-xl);
}

.service-tags {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.service-tags span {
    padding: 0.25rem 0.75rem;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    color: var(--color-text-tertiary);
    font-weight: 500;
}

/* ============================================
   Process Section
   ============================================ */
.process-section {
    padding: var(--spacing-5xl) 0;
    background: var(--color-bg-elevated);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

.process-timeline {
    max-width: 720px;
    margin: 0 auto;
    position: relative;
}

.process-timeline::before {
    content: '';
    position: absolute;
    left: 44px;
    top: 0;
    bottom: 0;
    width: 1px;
    background: linear-gradient(to bottom, var(--color-border), var(--color-accent), var(--color-border));
}

.process-step {
    display: flex;
    gap: var(--spacing-2xl);
    padding: var(--spacing-2xl) 0;
    position: relative;
}

.process-step-number {
    flex-shrink: 0;
    width: 88px;
    font-size: var(--font-size-sm);
    font-weight: 700;
    color: var(--color-accent);
    text-align: center;
    position: relative;
}

.process-step-number::after {
    content: '';
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    width: 8px;
    height: 8px;
    background: var(--color-accent);
    border-radius: 50%;
}

.process-step-content h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    letter-spacing: -0.01em;
}

.process-step-content p {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    line-height: 1.7;
}

/* ============================================
   Industries Section
   ============================================ */
.industries-section {
    padding: var(--spacing-5xl) 0;
}

.industries-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
}

.industry-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-2xl) var(--spacing-2xl) var(--spacing-xl);
    transition: all var(--transition-slow);
    position: relative;
    overflow: hidden;
}

.industry-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(41, 151, 255, 0.2), transparent);
    opacity: 0;
    transition: opacity var(--transition-slow);
}

.industry-card:hover {
    background: var(--color-bg-card-hover);
    border-color: var(--color-border-hover);
    transform: perspective(800px) rotateX(1deg) rotateY(-1deg) translateY(-2px);
}

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

.industry-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-xl);
    color: var(--color-accent);
    transition: all var(--transition-base);
}

.industry-card:hover .industry-icon {
    border-color: var(--color-border-hover);
    box-shadow: 0 0 24px rgba(41, 151, 255, 0.1);
}

.industry-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    letter-spacing: -0.01em;
}

.industry-description {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: var(--spacing-xl);
}

.industry-standards {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.industry-standards span {
    padding: 0.3rem 0.85rem;
    background: rgba(41, 151, 255, 0.06);
    border: 1px solid rgba(41, 151, 255, 0.12);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    color: var(--color-accent);
    font-weight: 600;
    letter-spacing: 0.02em;
}

/* ============================================
   About Section
   ============================================ */
.about-section {
    padding: var(--spacing-5xl) 0;
    background: var(--color-bg-elevated);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-4xl);
    align-items: start;
}

.about-content .section-tag {
    text-align: left;
}

.about-content .section-title {
    text-align: left;
}

.about-text {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    line-height: 1.8;
    margin-bottom: var(--spacing-lg);
}

.about-values {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
    margin-top: var(--spacing-2xl);
}

.about-value {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text-primary);
}

.about-value-icon {
    color: #34d399;
    flex-shrink: 0;
}

/* About Logo */
.about-logo {
    margin-bottom: var(--spacing-2xl);
}

.logo-cube-large {
    display: block;
    margin-bottom: var(--spacing-md);
}

.about-logo-text {
    display: block;
    font-size: var(--font-size-xs);
    font-weight: 700;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--color-text-tertiary);
}

/* Principle Cards */
.about-principles {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
}

.principle-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    transition: all var(--transition-slow);
}

.principle-card:hover {
    border-color: var(--color-border-hover);
}

.principle-number {
    font-size: var(--font-size-xs);
    font-weight: 700;
    color: var(--color-accent);
    margin-bottom: var(--spacing-md);
    letter-spacing: 0.05em;
}

.principle-title {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-sm);
}

.principle-text {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    line-height: 1.7;
}

/* ============================================
   CTA Section
   ============================================ */
.cta-section {
    padding: var(--spacing-5xl) 0;
}

.cta-card {
    position: relative;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-5xl) var(--spacing-3xl);
    text-align: center;
    overflow: hidden;
}

.cta-accent-line {
    position: absolute;
    top: 0;
    left: 10%;
    right: 10%;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--color-accent), transparent);
    opacity: 0.4;
}

.cta-title {
    font-size: clamp(var(--font-size-3xl), 4vw, var(--font-size-4xl));
    font-weight: 700;
    letter-spacing: -0.035em;
    line-height: 1.15;
    margin-bottom: var(--spacing-lg);
    position: relative;
}

.cta-description {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    max-width: 520px;
    margin: 0 auto var(--spacing-2xl);
    line-height: 1.7;
    position: relative;
}

.cta-actions {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-lg);
    position: relative;
}

.cta-email {
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
}

.cta-email a {
    color: var(--color-accent);
    transition: color var(--transition-fast);
}

.cta-email a:hover {
    color: var(--color-accent-hover);
}

.cta-card .btn {
    position: relative;
}

/* ============================================
   Contact Section
   ============================================ */
.contact-section {
    padding: var(--spacing-5xl) 0;
    background: var(--color-bg-elevated);
    border-top: 1px solid var(--color-border);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-4xl);
    align-items: start;
}

.contact-info .section-tag {
    text-align: left;
}

.contact-info .section-title {
    text-align: left;
}

.contact-description {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: var(--spacing-2xl);
}

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

.contact-detail {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.contact-detail svg {
    color: var(--color-text-tertiary);
    flex-shrink: 0;
}

/* Contact Form */
.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-sm);
}

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

.form-group input,
.form-group select,
.form-group textarea {
    padding: 0.75rem 1rem;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    color: var(--color-text-primary);
    font-size: var(--font-size-sm);
    transition: all var(--transition-fast);
    outline: none;
}

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

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px var(--color-accent-glow);
}

.form-group select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg width='12' height='8' viewBox='0 0 12 8' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1.5L6 6.5L11 1.5' stroke='%236e6e73' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    padding-right: 2.5rem;
}

.form-group select option {
    background: var(--color-bg-card);
    color: var(--color-text-primary);
}

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

/* Form Success State */
.form-success {
    text-align: center;
    padding: var(--spacing-3xl);
}

.form-success-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto var(--spacing-lg);
    background: rgba(52, 211, 153, 0.1);
    border: 1px solid rgba(52, 211, 153, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #34d399;
}

.form-success h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.form-success p {
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
}

/* ============================================
   Footer
   ============================================ */
.footer {
    padding: var(--spacing-4xl) 0 var(--spacing-2xl);
    border-top: 1px solid var(--color-border);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--spacing-3xl);
    margin-bottom: var(--spacing-3xl);
}

.footer-brand .logo-mark {
    margin-bottom: 0;
}

.footer-tagline {
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
    line-height: 1.7;
    margin-top: var(--spacing-md);
    max-width: 280px;
}

.footer-links-group h4 {
    font-size: var(--font-size-xs);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-text-tertiary);
    margin-bottom: var(--spacing-lg);
    font-weight: 600;
}

.footer-links-group a {
    display: block;
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    padding: var(--spacing-xs) 0;
    transition: color var(--transition-fast);
}

.footer-links-group a:hover {
    color: var(--color-text-primary);
}

.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: var(--spacing-2xl);
    border-top: 1px solid var(--color-border);
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.footer-bottom p {
    font-size: var(--font-size-xs);
    color: var(--color-text-tertiary);
}

.footer-email {
    font-size: var(--font-size-xs);
    color: var(--color-text-tertiary);
    font-weight: 400;
}

/* Legal Page Nav */
.legal-nav {
    display: flex;
    gap: var(--spacing-lg);
}

.legal-nav a {
    font-size: var(--font-size-xs);
    color: var(--color-text-tertiary);
    transition: color var(--transition-fast);
}

.legal-nav a:hover {
    color: var(--color-text-primary);
}

/* ============================================
   Legal Pages
   ============================================ */
.legal-page {
    padding: 10rem 0 var(--spacing-5xl);
}

.legal-header {
    margin-bottom: var(--spacing-3xl);
}

.legal-header .section-tag {
    text-align: left;
}

.legal-header .section-title {
    text-align: left;
}

.legal-updated {
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
    margin-top: var(--spacing-sm);
}

.legal-content {
    max-width: 760px;
}

.legal-content h2 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--color-text-primary);
    margin-top: var(--spacing-2xl);
    margin-bottom: var(--spacing-md);
    letter-spacing: -0.01em;
}

.legal-content h3 {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--color-text-primary);
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-sm);
}

.legal-content p {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    line-height: 1.8;
    margin-bottom: var(--spacing-md);
}

.legal-content ul {
    list-style: none;
    padding: 0;
    margin-bottom: var(--spacing-md);
}

.legal-content ul li {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    line-height: 1.8;
    padding-left: var(--spacing-xl);
    position: relative;
}

.legal-content ul li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.7em;
    width: 6px;
    height: 6px;
    background: var(--color-accent);
    border-radius: 50%;
    opacity: 0.5;
}

.legal-content strong {
    color: var(--color-text-primary);
    font-weight: 600;
}

/* ============================================
   Responsive Design
   ============================================ */

/* Tablets */
@media (max-width: 1024px) {
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

    .about-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-3xl);
    }

    .about-logo {
        text-align: center;
    }

    .logo-cube-large {
        margin: 0 auto var(--spacing-md);
    }

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

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

    .footer-brand {
        grid-column: 1 / -1;
    }
}

/* Mobile Landscape / Small Tablets */
@media (max-width: 768px) {
    :root {
        --container-padding: 1.25rem;
    }

    .nav-links {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(5, 5, 5, 0.98);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: var(--spacing-2xl);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-base);
    }

    .nav-links.is-open {
        opacity: 1;
        visibility: visible;
    }

    .nav-links .nav-link {
        font-size: var(--font-size-xl);
        color: var(--color-text-primary);
    }

    .nav-links .nav-link-cta {
        font-size: var(--font-size-base);
    }

    .nav-toggle {
        display: flex;
    }

    .hero {
        padding-top: 120px;
        padding-bottom: var(--spacing-3xl);
        min-height: auto;
    }

    .hero-watermark svg {
        width: 300px;
        height: 300px;
    }

    .hero-capabilities {
        flex-direction: column;
        gap: var(--spacing-md);
    }

    .hero-capability-divider {
        display: none;
    }

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

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

    .process-timeline::before {
        left: 20px;
    }

    .process-step {
        gap: var(--spacing-lg);
    }

    .process-step-number {
        width: 40px;
        font-size: var(--font-size-xs);
    }

    .about-principles {
        grid-template-columns: 1fr 1fr;
    }

    .contact-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-3xl);
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-2xl);
    }

    .footer-brand {
        grid-column: 1 / -1;
    }

    .cta-card {
        padding: var(--spacing-3xl) var(--spacing-xl);
    }
}

/* Mobile Portrait */
@media (max-width: 480px) {
    .hero-title {
        font-size: 2.25rem;
    }

    .section-title {
        font-size: var(--font-size-2xl);
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .about-values {
        grid-template-columns: 1fr;
    }

    .about-principles {
        grid-template-columns: 1fr 1fr;
    }

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

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

}

/* Reduce motion for accessibility */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    html {
        scroll-behavior: auto;
    }

    .animate-on-scroll {
        opacity: 1;
        transform: none;
    }

    .hero-watermark {
        display: none;
    }

    .service-card:hover,
    .industry-card:hover {
        transform: none;
    }
}