/* ============================================================
   Big Data Fin — Complete Stylesheet
   Design System: Deep Space Teal / Premium Dark Theme
   ============================================================ */

/* ---------- CSS Custom Properties ---------- */
:root {
    /* Brand palette */
    --clr-bg-deep:       #060910;
    --clr-bg-primary:    #0a0e27;
    --clr-bg-secondary:  #0e1230;
    --clr-bg-elevated:   #121640;
    --clr-bg-surface:    #161a4a;
    --clr-bg-card:       #0f1438;
    --clr-bg-input:      #0c1030;
    --clr-accent:        #00d4aa;
    --clr-accent-hover:  #00e8bb;
    --clr-accent-subtle: #0a2a22;
    --clr-text-primary:  #edeff5;
    --clr-text-secondary:#b0b8cc;
    --clr-text-muted:    #6b7394;
    --clr-text-on-dark:  #ffffff;
    --clr-border:        #1a1f42;
    --clr-border-light:  #262d58;
    --clr-error:         #ff5c6c;
    --clr-success:       #00d4aa;
    --clr-white:         #ffffff;

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

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    --font-mono:   'SF Mono', 'Fira Code', 'Fira Mono', 'Roboto Mono', monospace;
    --text-xs:     0.75rem;
    --text-sm:     0.875rem;
    --text-base:   1rem;
    --text-lg:     1.125rem;
    --text-xl:     1.25rem;
    --text-2xl:    1.5rem;
    --text-3xl:    2rem;
    --text-4xl:    2.5rem;
    --text-5xl:    3.5rem;
    --text-6xl:    4.5rem;

    /* Layout */
    --max-width:   1280px;
    --max-width-sm:900px;
    --header-height: 76px;
    --radius-sm:   6px;
    --radius-md:   10px;
    --radius-lg:   16px;
    --radius-xl:   24px;

    /* Transitions */
    --ease-out:    cubic-bezier(0.16, 1, 0.3, 1);
    --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
    --duration-fast:   150ms;
    --duration-normal: 300ms;
    --duration-slow:   600ms;
}

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

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
    scroll-padding-top: var(--header-height);
}

body {
    font-family: var(--font-family);
    font-size: var(--text-base);
    font-weight: 400;
    line-height: 1.7;
    color: var(--clr-text-secondary);
    background-color: var(--clr-bg-deep);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
    min-height: 100vh;
}

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

a {
    color: var(--clr-accent);
    text-decoration: none;
    transition: color var(--duration-fast) var(--ease-out);
}

a:hover {
    color: var(--clr-accent-hover);
}

ul, ol {
    list-style: none;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

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

/* ---------- Skip Link ---------- */
.skip-link {
    position: absolute;
    top: -100%;
    left: var(--space-md);
    background: var(--clr-accent);
    color: var(--clr-bg-deep);
    padding: var(--space-sm) var(--space-lg);
    border-radius: var(--radius-sm);
    font-weight: 600;
    z-index: 10000;
    font-size: var(--text-base);
}

.skip-link:focus {
    top: var(--space-md);
}

/* ---------- Header ---------- */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    height: var(--header-height);
    background: rgba(6, 9, 16, 0.88);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--clr-border);
    transition: background var(--duration-normal) var(--ease-out);
}

.site-header.scrolled {
    background: rgba(6, 9, 16, 0.96);
    border-bottom-color: var(--clr-border-light);
}

.header-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--space-xl);
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    text-decoration: none;
    flex-shrink: 0;
}

.logo-icon svg {
    display: block;
}

.logo-text {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
}

.logo-brand {
    font-size: var(--text-xl);
    font-weight: 800;
    color: var(--clr-text-primary);
    letter-spacing: -0.02em;
}

.logo-accent {
    color: var(--clr-accent);
}

.logo-tagline {
    font-size: 0.625rem;
    font-weight: 500;
    color: var(--clr-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.12em;
}

/* Navigation */
.main-nav {
    display: flex;
    align-items: center;
}

.nav-list {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.nav-link {
    color: var(--clr-text-secondary);
    font-size: var(--text-sm);
    font-weight: 500;
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-sm);
    transition: color var(--duration-fast) var(--ease-out), background var(--duration-fast) var(--ease-out);
}

.nav-link:hover {
    color: var(--clr-text-on-dark);
    background: rgba(255, 255, 255, 0.05);
}

.nav-cta {
    background: var(--clr-accent);
    color: var(--clr-bg-deep);
    font-size: var(--text-sm);
    font-weight: 600;
    padding: 0.55rem 1.35rem;
    border-radius: var(--radius-sm);
    margin-left: var(--space-sm);
    transition: background var(--duration-fast) var(--ease-out), transform var(--duration-fast) var(--ease-out);
}

.nav-cta:hover {
    background: var(--clr-accent-hover);
    color: var(--clr-bg-deep);
    transform: translateY(-1px);
}

/* Mobile Toggle */
.mobile-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-sm);
    padding: 8px;
    z-index: 1001;
}

.hamburger-line {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--clr-text-primary);
    border-radius: 2px;
    transition: transform var(--duration-normal) var(--ease-out), opacity var(--duration-normal) var(--ease-out);
    transform-origin: center;
}

.mobile-toggle[aria-expanded="true"] .hamburger-line:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.mobile-toggle[aria-expanded="true"] .hamburger-line:nth-child(2) {
    opacity: 0;
}

.mobile-toggle[aria-expanded="true"] .hamburger-line:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* ---------- Section Markers ---------- */
.section-marker {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin-bottom: var(--space-md);
}

.marker-label {
    font-size: var(--text-xs);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    color: var(--clr-accent);
}

.marker-line {
    flex: 1;
    height: 1px;
    background: linear-gradient(to right, var(--clr-accent), transparent);
    opacity: 0.3;
}

/* ---------- Section Titles ---------- */
.section-title {
    font-size: var(--text-4xl);
    font-weight: 800;
    color: var(--clr-text-primary);
    line-height: 1.2;
    letter-spacing: -0.03em;
    margin-bottom: var(--space-lg);
}

.text-accent {
    color: var(--clr-accent);
}

.section-subtitle {
    font-size: var(--text-lg);
    color: var(--clr-text-muted);
    max-width: 640px;
    line-height: 1.7;
}

/* ---------- Buttons ---------- */
.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    background: var(--clr-accent);
    color: var(--clr-bg-deep);
    font-size: var(--text-base);
    font-weight: 600;
    padding: 0.8rem 1.8rem;
    border-radius: var(--radius-sm);
    transition: background var(--duration-fast) var(--ease-out), transform var(--duration-fast) var(--ease-out), box-shadow var(--duration-fast) var(--ease-out);
    white-space: nowrap;
}

.btn-primary:hover {
    background: var(--clr-accent-hover);
    color: var(--clr-bg-deep);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 212, 170, 0.2);
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    background: transparent;
    color: var(--clr-text-primary);
    font-size: var(--text-base);
    font-weight: 500;
    padding: 0.8rem 1.8rem;
    border-radius: var(--radius-sm);
    border: 1px solid var(--clr-border-light);
    transition: border-color var(--duration-fast) var(--ease-out), background var(--duration-fast) var(--ease-out);
    white-space: nowrap;
}

.btn-secondary:hover {
    border-color: var(--clr-accent);
    color: var(--clr-text-on-dark);
    background: rgba(0, 212, 170, 0.06);
}

.btn-light {
    background: var(--clr-white);
    color: var(--clr-bg-deep);
}

.btn-light:hover {
    background: var(--clr-white);
    color: var(--clr-bg-deep);
    box-shadow: 0 8px 32px rgba(255, 255, 255, 0.15);
}

.btn-outline-light {
    border-color: rgba(255, 255, 255, 0.3);
    color: var(--clr-white);
}

.btn-outline-light:hover {
    border-color: var(--clr-white);
    background: rgba(255, 255, 255, 0.08);
    color: var(--clr-white);
}

/* ---------- Hero ---------- */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: calc(var(--header-height) + var(--space-3xl)) var(--space-xl) var(--space-4xl);
    overflow: hidden;
    background: radial-gradient(ellipse 80% 60% at 50% 20%, rgba(0, 212, 170, 0.06) 0%, transparent 60%),
                linear-gradient(180deg, var(--clr-bg-deep) 0%, var(--clr-bg-primary) 50%, var(--clr-bg-deep) 100%);
}

.hero-particles {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.particle {
    position: absolute;
    border-radius: 50%;
    background: var(--clr-accent);
    opacity: 0.08;
    animation: floatUp linear infinite;
}

.particle:nth-child(1) { width: 4px; height: 4px; left: 10%; top: 30%; animation-duration: 18s; animation-delay: 0s; }
.particle:nth-child(2) { width: 2px; height: 2px; left: 25%; top: 60%; animation-duration: 22s; animation-delay: 2s; }
.particle:nth-child(3) { width: 3px; height: 3px; left: 45%; top: 20%; animation-duration: 20s; animation-delay: 5s; }
.particle:nth-child(4) { width: 5px; height: 5px; left: 65%; top: 50%; animation-duration: 25s; animation-delay: 1s; }
.particle:nth-child(5) { width: 2px; height: 2px; left: 80%; top: 35%; animation-duration: 16s; animation-delay: 4s; }
.particle:nth-child(6) { width: 3px; height: 3px; left: 90%; top: 70%; animation-duration: 21s; animation-delay: 3s; }

@keyframes floatUp {
    0%   { transform: translateY(0) scale(1); opacity: 0; }
    10%  { opacity: 0.12; }
    90%  { opacity: 0.04; }
    100% { transform: translateY(-100vh) scale(0.5); opacity: 0; }
}

.hero-grid-wrap {
    max-width: var(--max-width);
    margin: 0 auto;
    width: 100%;
    display: grid;
    grid-template-columns: 1.15fr 0.85fr;
    gap: var(--space-4xl);
    align-items: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    background: rgba(0, 212, 170, 0.08);
    border: 1px solid rgba(0, 212, 170, 0.15);
    color: var(--clr-accent);
    font-size: var(--text-sm);
    font-weight: 500;
    padding: 0.4rem 1rem;
    border-radius: 100px;
    margin-bottom: var(--space-xl);
}

.badge-dot {
    display: inline-block;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--clr-accent);
    animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
    0%, 100% { opacity: 1; }
    50%      { opacity: 0.4; }
}

.hero-title {
    margin-bottom: var(--space-xl);
}

.title-line {
    display: block;
    font-size: clamp(2.5rem, 5.5vw, var(--text-6xl));
    font-weight: 900;
    color: var(--clr-text-on-dark);
    line-height: 1.08;
    letter-spacing: -0.04em;
}

.title-accent {
    color: var(--clr-accent);
}

.hero-description {
    font-size: var(--text-lg);
    color: var(--clr-text-muted);
    max-width: 560px;
    line-height: 1.7;
    margin-bottom: var(--space-2xl);
}

.hero-actions {
    display: flex;
    gap: var(--space-md);
    flex-wrap: wrap;
    margin-bottom: var(--space-3xl);
}

/* Hero Stats */
.hero-stats {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xl);
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--clr-border);
    border-radius: var(--radius-lg);
    padding: var(--space-lg) var(--space-2xl);
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    min-width: 100px;
}

.stat-number {
    font-size: var(--text-4xl);
    font-weight: 800;
    color: var(--clr-text-on-dark);
    line-height: 1;
    letter-spacing: -0.02em;
}

.stat-label {
    font-size: var(--text-xs);
    color: var(--clr-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-weight: 600;
    margin-top: var(--space-xs);
    text-align: center;
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: var(--clr-border-light);
}

/* Hero Visual */
.hero-visual {
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    height: 420px;
}

.hero-cube {
    position: relative;
    width: 180px;
    height: 180px;
    transform-style: preserve-3d;
    animation: rotateCube 20s linear infinite;
}

@keyframes rotateCube {
    0%   { transform: rotateX(0deg) rotateY(0deg); }
    100% { transform: rotateX(360deg) rotateY(360deg); }
}

.cube-face {
    position: absolute;
    width: 180px;
    height: 180px;
    background: rgba(0, 212, 170, 0.04);
    border: 1.5px solid rgba(0, 212, 170, 0.2);
    backdrop-filter: blur(2px);
}

.cube-front  { transform: translateZ(90px); }
.cube-back   { transform: rotateY(180deg) translateZ(90px); }
.cube-right  { transform: rotateY(90deg) translateZ(90px); }
.cube-left   { transform: rotateY(-90deg) translateZ(90px); }
.cube-top    { transform: rotateX(90deg) translateZ(90px); }
.cube-bottom { transform: rotateX(-90deg) translateZ(90px); }

.hero-ring {
    position: absolute;
    border-radius: 50%;
    border: 1px solid rgba(0, 212, 170, 0.12);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.ring-outer { width: 340px; height: 340px; }
.ring-middle { width: 260px; height: 260px; border-color: rgba(0, 212, 170, 0.08); }
.ring-inner { width: 100px; height: 100px; border-color: rgba(0, 212, 170, 0.18); border-style: dashed; }

.hero-scroll {
    position: absolute;
    bottom: var(--space-2xl);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
}

.scroll-text {
    font-size: var(--text-xs);
    color: var(--clr-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.14em;
    font-weight: 600;
}

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

@keyframes scrollPulse {
    0%, 100% { opacity: 0.3; }
    50%      { opacity: 1; }
}

/* ---------- About ---------- */
.about {
    padding: var(--space-5xl) var(--space-xl);
    background: var(--clr-bg-primary);
    position: relative;
}

.about::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(to right, transparent, rgba(0, 212, 170, 0.2), transparent);
}

.about-layout {
    max-width: var(--max-width);
    margin: 0 auto;
    display: grid;
    grid-template-columns: 0.85fr 1.15fr;
    gap: var(--space-4xl);
    align-items: start;
}

.about-header .section-title {
    position: sticky;
    top: calc(var(--header-height) + var(--space-xl));
}

.about-lead {
    font-size: var(--text-xl);
    font-weight: 500;
    color: var(--clr-text-primary);
    line-height: 1.6;
    margin-bottom: var(--space-lg);
}

.about-text {
    font-size: var(--text-base);
    color: var(--clr-text-secondary);
    line-height: 1.8;
    margin-bottom: var(--space-2xl);
}

.about-highlights {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.highlight-item {
    display: flex;
    gap: var(--space-lg);
    padding: var(--space-lg);
    background: var(--clr-bg-elevated);
    border-radius: var(--radius-md);
    border: 1px solid var(--clr-border);
    transition: border-color var(--duration-normal) var(--ease-out);
}

.highlight-item:hover {
    border-color: var(--clr-accent);
}

.highlight-icon {
    flex-shrink: 0;
    margin-top: 2px;
}

.highlight-title {
    display: block;
    font-size: var(--text-base);
    font-weight: 600;
    color: var(--clr-text-primary);
    margin-bottom: var(--space-xs);
}

.highlight-item p {
    font-size: var(--text-sm);
    color: var(--clr-text-secondary);
    line-height: 1.6;
}

/* ---------- Services ---------- */
.services {
    padding: var(--space-5xl) var(--space-xl);
    background: var(--clr-bg-deep);
    position: relative;
}

.services-header {
    max-width: var(--max-width);
    margin: 0 auto var(--space-4xl);
}

.services-grid {
    max-width: var(--max-width);
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
}

.service-card {
    position: relative;
    background: var(--clr-bg-card);
    border: 1px solid var(--clr-border);
    border-radius: var(--radius-lg);
    padding: var(--space-2xl);
    transition: border-color var(--duration-normal) var(--ease-out), transform var(--duration-normal) var(--ease-out);
    overflow: hidden;
}

.service-card:hover,
.service-card:focus-within {
    border-color: rgba(0, 212, 170, 0.3);
    transform: translateY(-4px);
}

.card-accent {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(to right, var(--clr-accent), transparent);
    opacity: 0;
    transition: opacity var(--duration-normal) var(--ease-out);
}

.service-card:hover .card-accent,
.service-card:focus-within .card-accent {
    opacity: 1;
}

.card-number {
    position: absolute;
    top: var(--space-lg);
    right: var(--space-lg);
    font-size: 3rem;
    font-weight: 900;
    color: rgba(255, 255, 255, 0.03);
    line-height: 1;
    pointer-events: none;
}

.card-icon {
    margin-bottom: var(--space-lg);
}

.card-title {
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--clr-text-primary);
    margin-bottom: var(--space-md);
    letter-spacing: -0.02em;
}

.card-description {
    font-size: var(--text-sm);
    color: var(--clr-text-secondary);
    line-height: 1.7;
    margin-bottom: var(--space-lg);
}

.card-features {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.card-features li {
    font-size: var(--text-sm);
    color: var(--clr-text-muted);
    padding-left: var(--space-lg);
    position: relative;
    line-height: 1.5;
}

.card-features li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.55em;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--clr-accent);
    opacity: 0.5;
}

/* ---------- Industries ---------- */
.industries {
    padding: var(--space-5xl) var(--space-xl);
    background: var(--clr-bg-primary);
    position: relative;
}

.industries::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(to right, transparent, rgba(0, 212, 170, 0.15), transparent);
}

.industries-header {
    max-width: var(--max-width);
    margin: 0 auto var(--space-4xl);
}

.industries-grid {
    max-width: var(--max-width);
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-lg);
}

.industry-card {
    background: var(--clr-bg-card);
    border: 1px solid var(--clr-border);
    border-radius: var(--radius-md);
    padding: var(--space-xl) var(--space-lg);
    transition: border-color var(--duration-normal) var(--ease-out), transform var(--duration-normal) var(--ease-out);
}

.industry-card:hover {
    border-color: rgba(0, 212, 170, 0.25);
    transform: translateY(-2px);
}

.industry-icon-wrap {
    margin-bottom: var(--space-md);
}

.industry-card h3 {
    font-size: var(--text-base);
    font-weight: 700;
    color: var(--clr-text-primary);
    margin-bottom: var(--space-sm);
    letter-spacing: -0.01em;
}

.industry-card p {
    font-size: var(--text-sm);
    color: var(--clr-text-secondary);
    line-height: 1.65;
}

/* ---------- CTA Banner ---------- */
.cta-banner {
    padding: var(--space-5xl) var(--space-xl);
    background: linear-gradient(135deg, var(--clr-accent) 0%, #00997a 40%, #0a1628 100%);
    position: relative;
    overflow: hidden;
}

.cta-banner::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 30% 50%, rgba(0, 0, 0, 0.2) 0%, transparent 70%);
    pointer-events: none;
}

.cta-content {
    max-width: var(--max-width-sm);
    margin: 0 auto;
    text-align: center;
    position: relative;
    z-index: 1;
}

.cta-title {
    font-size: var(--text-4xl);
    font-weight: 800;
    color: var(--clr-white);
    line-height: 1.2;
    letter-spacing: -0.03em;
    margin-bottom: var(--space-lg);
}

.cta-text {
    font-size: var(--text-lg);
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.7;
    margin-bottom: var(--space-2xl);
}

.cta-actions {
    display: flex;
    gap: var(--space-md);
    justify-content: center;
    flex-wrap: wrap;
}

/* ---------- Contact ---------- */
.contact {
    padding: var(--space-5xl) var(--space-xl);
    background: var(--clr-bg-deep);
    position: relative;
}

.contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(to right, transparent, rgba(0, 212, 170, 0.15), transparent);
}

.contact-layout {
    max-width: var(--max-width);
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1.3fr;
    gap: var(--space-4xl);
    align-items: start;
}

.contact-intro {
    font-size: var(--text-lg);
    color: var(--clr-text-secondary);
    line-height: 1.7;
    margin-bottom: var(--space-2xl);
}

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

.contact-item {
    display: flex;
    gap: var(--space-md);
}

.contact-icon {
    flex-shrink: 0;
    margin-top: 2px;
}

.contact-label {
    display: block;
    font-size: var(--text-sm);
    font-weight: 700;
    color: var(--clr-text-primary);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: var(--space-xs);
}

.contact-item p {
    font-size: var(--text-base);
    color: var(--clr-text-secondary);
    line-height: 1.7;
}

.contact-link {
    color: var(--clr-text-secondary);
    transition: color var(--duration-fast) var(--ease-out);
}

.contact-link:hover {
    color: var(--clr-accent);
}

/* Contact Form */
.contact-form-wrap {
    background: var(--clr-bg-card);
    border: 1px solid var(--clr-border);
    border-radius: var(--radius-lg);
    padding: var(--space-2xl);
}

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

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

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

.form-label {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--clr-text-primary);
}

.form-input {
    background: var(--clr-bg-input);
    border: 1px solid var(--clr-border-light);
    border-radius: var(--radius-sm);
    padding: 0.75rem 1rem;
    color: var(--clr-text-primary);
    font-size: var(--text-base);
    transition: border-color var(--duration-fast) var(--ease-out), box-shadow var(--duration-fast) var(--ease-out);
    outline: none;
    width: 100%;
}

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

.form-input:focus {
    border-color: var(--clr-accent);
    box-shadow: 0 0 0 3px rgba(0, 212, 170, 0.1);
}

.form-input.error {
    border-color: var(--clr-error);
}

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

.form-error {
    font-size: var(--text-xs);
    color: var(--clr-error);
    min-height: 1em;
}

.btn-submit {
    position: relative;
    width: 100%;
    padding: 0.9rem;
    font-size: var(--text-base);
}

.btn-submit.loading .btn-text {
    visibility: hidden;
}

.btn-submit.loading .btn-spinner {
    display: block;
}

.btn-spinner {
    display: none;
    position: absolute;
    width: 20px;
    height: 20px;
    border: 2px solid var(--clr-bg-deep);
    border-top-color: transparent;
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.form-success {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md) var(--space-lg);
    background: rgba(0, 212, 170, 0.06);
    border: 1px solid rgba(0, 212, 170, 0.2);
    border-radius: var(--radius-sm);
    color: var(--clr-accent);
    font-size: var(--text-sm);
    font-weight: 500;
}

.form-success[hidden] {
    display: none;
}

/* ---------- Footer ---------- */
.site-footer {
    padding: var(--space-4xl) var(--space-xl) var(--space-xl);
    background: var(--clr-bg-primary);
    border-top: 1px solid var(--clr-border);
}

.footer-grid {
    max-width: var(--max-width);
    margin: 0 auto;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.2fr;
    gap: var(--space-3xl);
    padding-bottom: var(--space-3xl);
    border-bottom: 1px solid var(--clr-border);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-md);
    text-decoration: none;
}

.footer-brand-name {
    font-size: var(--text-xl);
    font-weight: 800;
    color: var(--clr-text-primary);
    letter-spacing: -0.02em;
}

.footer-brand-name span {
    color: var(--clr-accent);
}

.footer-description {
    font-size: var(--text-sm);
    color: var(--clr-text-muted);
    line-height: 1.7;
    max-width: 380px;
}

.footer-heading {
    font-size: var(--text-sm);
    font-weight: 700;
    color: var(--clr-text-primary);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: var(--space-lg);
}

.footer-links ul {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.footer-links a,
.footer-contact-list span {
    font-size: var(--text-sm);
    color: var(--clr-text-muted);
    transition: color var(--duration-fast) var(--ease-out);
}

.footer-links a:hover {
    color: var(--clr-accent);
}

.footer-contact-list li {
    margin-bottom: var(--space-xs);
}

.footer-bottom {
    max-width: var(--max-width);
    margin: 0 auto;
    padding-top: var(--space-xl);
    text-align: center;
}

.footer-bottom p {
    font-size: var(--text-sm);
    color: var(--clr-text-muted);
}

/* ---------- Legal Pages ---------- */
.legal-hero {
    padding: calc(var(--header-height) + var(--space-4xl)) var(--space-xl) var(--space-3xl);
    background: var(--clr-bg-primary);
    text-align: center;
    border-bottom: 1px solid var(--clr-border);
}

.legal-title {
    font-size: var(--text-5xl);
    font-weight: 900;
    color: var(--clr-text-on-dark);
    letter-spacing: -0.04em;
    margin-bottom: var(--space-md);
}

.legal-date {
    font-size: var(--text-base);
    color: var(--clr-text-muted);
}

.legal-content {
    max-width: 860px;
    margin: 0 auto;
    padding: var(--space-4xl) var(--space-xl) var(--space-5xl);
}

.legal-infobox {
    background: var(--clr-bg-card);
    border: 1px solid var(--clr-border-light);
    border-radius: var(--radius-md);
    padding: var(--space-xl) var(--space-2xl);
    margin-bottom: var(--space-3xl);
}

.legal-infobox .infobox-header,
.legal-acceptance .acceptance-header {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-md);
    font-size: var(--text-base);
    font-weight: 700;
    color: var(--clr-text-primary);
}

.legal-infobox .infobox-body p {
    font-size: var(--text-sm);
    color: var(--clr-text-secondary);
    line-height: 1.8;
    margin-bottom: var(--space-xs);
}

.legal-infobox .infobox-body strong {
    color: var(--clr-text-primary);
}

.legal-acceptance {
    background: rgba(0, 212, 170, 0.04);
    border: 1px solid rgba(0, 212, 170, 0.15);
    border-radius: var(--radius-md);
    padding: var(--space-xl) var(--space-2xl);
    margin-bottom: var(--space-3xl);
}

.legal-acceptance p {
    font-size: var(--text-base);
    color: var(--clr-text-secondary);
    line-height: 1.8;
    margin-bottom: var(--space-md);
}

.legal-acceptance p:last-child {
    margin-bottom: 0;
}

.legal-body {
    display: flex;
    flex-direction: column;
    gap: var(--space-3xl);
}

.legal-section {
    scroll-margin-top: var(--header-height);
}

.legal-section h2 {
    font-size: var(--text-2xl);
    font-weight: 700;
    color: var(--clr-text-primary);
    letter-spacing: -0.02em;
    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-sm);
    border-bottom: 1px solid var(--clr-border);
}

.legal-section p {
    font-size: var(--text-base);
    color: var(--clr-text-secondary);
    line-height: 1.85;
    margin-bottom: var(--space-md);
}

.legal-section p:last-child {
    margin-bottom: 0;
}

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

/* ---------- Fade-in Animation ---------- */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity var(--duration-slow) var(--ease-out), transform var(--duration-slow) var(--ease-out);
}

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

.fade-in-delay-1 { transition-delay: 100ms; }
.fade-in-delay-2 { transition-delay: 200ms; }
.fade-in-delay-3 { transition-delay: 300ms; }
.fade-in-delay-4 { transition-delay: 400ms; }

/* ---------- Responsive Design ---------- */
@media (max-width: 1280px) {
    .industries-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 1024px) {
    :root {
        --header-height: 68px;
    }

    .hero-grid-wrap {
        grid-template-columns: 1fr;
        gap: var(--space-3xl);
        text-align: center;
    }

    .hero-content {
        order: 1;
    }

    .hero-visual {
        order: 0;
        height: 280px;
    }

    .hero-description {
        margin-left: auto;
        margin-right: auto;
    }

    .hero-actions {
        justify-content: center;
    }

    .hero-stats {
        margin: 0 auto;
    }

    .about-layout {
        grid-template-columns: 1fr;
        gap: var(--space-2xl);
    }

    .about-header .section-title {
        position: static;
    }

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

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

    .contact-layout {
        grid-template-columns: 1fr;
    }

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

    /* Mobile Navigation */
    .mobile-toggle {
        display: flex;
    }

    .nav-list {
        position: fixed;
        top: 0;
        right: -100%;
        width: min(320px, 80vw);
        height: 100vh;
        flex-direction: column;
        background: var(--clr-bg-primary);
        border-left: 1px solid var(--clr-border);
        padding: calc(var(--header-height) + var(--space-xl)) var(--space-xl) var(--space-xl);
        gap: var(--space-xs);
        transition: right var(--duration-normal) var(--ease-in-out);
        z-index: 999;
        overflow-y: auto;
        align-items: stretch;
    }

    .nav-list.active {
        right: 0;
    }

    .nav-link {
        display: block;
        padding: var(--space-md) var(--space-md);
        font-size: var(--text-base);
        border-radius: var(--radius-sm);
    }

    .nav-cta {
        margin-left: 0;
        margin-top: var(--space-md);
        text-align: center;
    }

    /* Mobile backdrop */
    .nav-backdrop {
        position: fixed;
        inset: 0;
        background: rgba(0, 0, 0, 0.5);
        z-index: 998;
        opacity: 0;
        pointer-events: none;
        transition: opacity var(--duration-normal) var(--ease-out);
    }

    .nav-backdrop.active {
        opacity: 1;
        pointer-events: auto;
    }
}

@media (max-width: 768px) {
    .section-title {
        font-size: var(--text-3xl);
    }

    .hero {
        padding: calc(var(--header-height) + var(--space-xl)) var(--space-lg) var(--space-3xl);
    }

    .hero-stats {
        flex-direction: column;
        gap: var(--space-lg);
        padding: var(--space-xl);
    }

    .stat-divider {
        width: 60px;
        height: 1px;
    }

    .hero-visual {
        height: 220px;
    }

    .hero-cube {
        width: 120px;
        height: 120px;
    }

    .cube-face {
        width: 120px;
        height: 120px;
    }

    .cube-front  { transform: translateZ(60px); }
    .cube-back   { transform: rotateY(180deg) translateZ(60px); }
    .cube-right  { transform: rotateY(90deg) translateZ(60px); }
    .cube-left   { transform: rotateY(-90deg) translateZ(60px); }
    .cube-top    { transform: rotateX(90deg) translateZ(60px); }
    .cube-bottom { transform: rotateX(-90deg) translateZ(60px); }

    .ring-outer { width: 240px; height: 240px; }
    .ring-middle { width: 180px; height: 180px; }
    .ring-inner { width: 70px; height: 70px; }

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

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

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

    .contact {
        padding: var(--space-3xl) var(--space-lg);
    }

    .about {
        padding: var(--space-3xl) var(--space-lg);
    }

    .services {
        padding: var(--space-3xl) var(--space-lg);
    }

    .industries {
        padding: var(--space-3xl) var(--space-lg);
    }

    .cta-banner {
        padding: var(--space-3xl) var(--space-lg);
    }

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

    .legal-title {
        font-size: var(--text-3xl);
    }

    .legal-content {
        padding: var(--space-2xl) var(--space-lg);
    }
}

@media (max-width: 480px) {
    .hero-actions {
        flex-direction: column;
        width: 100%;
    }

    .hero-actions .btn-primary,
    .hero-actions .btn-secondary {
        width: 100%;
        text-align: center;
    }

    .hero-stats {
        width: 100%;
    }

    .cta-actions {
        flex-direction: column;
        width: 100%;
    }

    .cta-actions .btn-primary,
    .cta-actions .btn-secondary {
        width: 100%;
        text-align: center;
    }
}