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

:root {
    --color-bg: #0a0c10;
    --color-bg-alt: #0f1218;
    --color-surface: #161a22;
    --color-surface-hover: #1c2129;
    --color-border: #2a2f3a;
    --color-border-subtle: #1e2330;
    --color-text: #e8eaed;
    --color-text-muted: #8b929e;
    --color-text-dim: #5a6270;
    --color-primary: #00d4aa;
    --color-primary-dim: #00a882;
    --color-primary-glow: rgba(0, 212, 170, 0.15);
    --color-accent: #4ecdc4;
    --color-warning: #f5a623;
    --color-danger: #e74c3c;
    --color-success: #2ecc71;
    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.3);
    --shadow-md: 0 4px 20px rgba(0,0,0,0.4);
    --shadow-lg: 0 8px 40px rgba(0,0,0,0.5);
    --container-max: 1200px;
    --nav-height: 72px;
}

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

body {
    font-family: var(--font-main);
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: var(--color-primary); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--color-accent); }

.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== NAVIGATION ===== */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--nav-height);
    background: rgba(10, 12, 16, 0.85);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border-subtle);
    z-index: 1000;
    transition: background 0.3s;
}

.nav--scrolled {
    background: rgba(10, 12, 16, 0.95);
    border-bottom-color: var(--color-border);
}

.nav__container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav__logo {
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--color-text);
}

.nav__logo-img {
    width: 32px;
    height: 32px;
    object-fit: contain;
}

.nav__links {
    display: flex;
    align-items: center;
    gap: 32px;
    list-style: none;
}

.nav__links a {
    color: var(--color-text-muted);
    font-size: 0.875rem;
    font-weight: 500;
    transition: color 0.2s;
}

.nav__links a:hover {
    color: var(--color-text);
}

.nav__cta {
    background: var(--color-primary);
    color: var(--color-bg) !important;
    padding: 8px 16px;
    border-radius: var(--radius-md);
    font-weight: 600 !important;
}

.nav__cta:hover {
    background: var(--color-accent);
    color: var(--color-bg) !important;
}

.nav__toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.nav__toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-text);
    border-radius: 2px;
    transition: all 0.3s;
}

/* ===== BUTTONS ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 28px;
    border-radius: var(--radius-md);
    font-size: 0.9375rem;
    font-weight: 600;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: all 0.25s ease;
}

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

.btn--primary:hover {
    background: var(--color-accent);
    color: var(--color-bg);
    transform: translateY(-1px);
    box-shadow: 0 4px 20px rgba(0, 212, 170, 0.3);
}

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

.btn--secondary:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    transform: translateY(-1px);
}

.btn--sm { padding: 10px 20px; font-size: 0.875rem; }
.btn--lg { padding: 16px 32px; font-size: 1rem; }

/* ===== HERO ===== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding-top: var(--nav-height);
    overflow: hidden;
}

.hero__grid-bg {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(0, 212, 170, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 212, 170, 0.03) 1px, transparent 1px);
    background-size: 40px 40px;
    mask-image: radial-gradient(ellipse at 50% 50%, black 30%, transparent 70%);
    -webkit-mask-image: radial-gradient(ellipse at 50% 50%, black 30%, transparent 70%);
}

.hero__container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 80px 24px 40px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero__badge {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    color: var(--color-primary);
    background: var(--color-primary-glow);
    border: 1px solid rgba(0, 212, 170, 0.2);
    padding: 6px 14px;
    border-radius: var(--radius-sm);
    margin-bottom: 24px;
}

.hero__title {
    font-size: clamp(2.2rem, 4vw, 3.5rem);
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.03em;
    margin-bottom: 20px;
}

.hero__subtitle {
    font-size: 1.125rem;
    color: var(--color-text-muted);
    line-height: 1.7;
    margin-bottom: 36px;
    max-width: 540px;
}

.hero__actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.hero__visual {
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero__visual canvas {
    width: 100%;
    max-width: 480px;
    height: auto;
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    background: var(--color-bg-alt);
}



/* ===== SECTIONS COMMON ===== */
section {
    padding: 120px 0;
}

.section-header {
    text-align: center;
    max-width: 680px;
    margin: 0 auto 64px;
}

.section-label {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-primary);
    margin-bottom: 12px;
}

.section-header h2 {
    font-size: clamp(1.75rem, 3vw, 2.5rem);
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.02em;
    margin-bottom: 16px;
}

.section-desc {
    font-size: 1.0625rem;
    color: var(--color-text-muted);
    line-height: 1.7;
}

/* ===== SERVICES ===== */
.services {
    background: var(--color-bg-alt);
}

.services__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
}

.service-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border-subtle);
    border-radius: var(--radius-lg);
    padding: 32px;
    transition: all 0.3s ease;
}

.service-card:hover {
    border-color: var(--color-primary);
    transform: translateY(-2px);
    box-shadow: 0 4px 24px rgba(0, 212, 170, 0.08);
}

.service-card__icon {
    width: 44px;
    height: 44px;
    color: var(--color-primary);
    margin-bottom: 20px;
}

.service-card__icon svg {
    width: 100%;
    height: 100%;
}

.service-card h3 {
    font-size: 1.0625rem;
    font-weight: 600;
    margin-bottom: 10px;
}

.service-card p {
    font-size: 0.9375rem;
    color: var(--color-text-muted);
    line-height: 1.6;
}

/* ===== INDUSTRIES ===== */
.industries__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 20px;
}

.industry-card {
    position: relative;
    background: var(--color-surface);
    border: 1px solid var(--color-border-subtle);
    border-radius: var(--radius-lg);
    padding: 32px;
    overflow: hidden;
    transition: all 0.3s ease;
}

.industry-card:hover {
    border-color: var(--color-border);
    transform: translateY(-2px);
}

.industry-card__frame {
    position: absolute;
    top: 12px;
    right: 12px;
    width: 28px;
    height: 28px;
    border: 2px solid var(--color-border);
    border-radius: 2px;
    opacity: 0.4;
}

.industry-card__frame::before,
.industry-card__frame::after {
    content: '';
    position: absolute;
    background: var(--color-primary);
}

.industry-card__frame::before {
    top: -2px; left: -2px;
    width: 8px; height: 2px;
}

.industry-card__frame::after {
    top: -2px; left: -2px;
    width: 2px; height: 8px;
}

.industry-card h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.industry-card p {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    line-height: 1.6;
}

/* ===== PROCESS ===== */
.process {
    background: var(--color-bg-alt);
}

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

.process__timeline::before {
    content: '';
    position: absolute;
    left: 24px;
    top: 0;
    bottom: 0;
    width: 1px;
    background: linear-gradient(to bottom, var(--color-primary), var(--color-border));
}

.process-step {
    display: flex;
    gap: 32px;
    padding: 32px 0;
    position: relative;
}

.process-step__number {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-primary);
    background: var(--color-bg-alt);
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--color-primary);
    border-radius: 50%;
    flex-shrink: 0;
    position: relative;
    z-index: 1;
}

.process-step__content h3 {
    font-size: 1.0625rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.process-step__content p {
    font-size: 0.9375rem;
    color: var(--color-text-muted);
    line-height: 1.6;
}

/* ===== TECHNOLOGY ===== */
.tech__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 32px;
}

.tech-item {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

.tech-item__marker {
    width: 8px;
    height: 8px;
    background: var(--color-primary);
    border-radius: 2px;
    margin-top: 8px;
    flex-shrink: 0;
}

.tech-item h4 {
    font-size: 0.9375rem;
    font-weight: 600;
    margin-bottom: 6px;
}

.tech-item p {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    line-height: 1.5;
}

/* ===== SIMULATOR ===== */
.simulator {
    background: var(--color-bg-alt);
}

.simulator__wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: start;
}

.sim-group {
    margin-bottom: 28px;
}

.sim-label {
    display: block;
    font-size: 0.8125rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-muted);
    margin-bottom: 12px;
}

.sim-options {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.sim-option {
    padding: 10px 16px;
    background: var(--color-surface);
    border: 1px solid var(--color-border-subtle);
    border-radius: var(--radius-md);
    color: var(--color-text-muted);
    font-size: 0.8125rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    font-family: var(--font-main);
}

.sim-option:hover {
    border-color: var(--color-border);
    color: var(--color-text);
}

.sim-option.active {
    background: var(--color-primary-glow);
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.simulator__result {
    background: var(--color-surface);
    border: 1px solid var(--color-border-subtle);
    border-radius: var(--radius-lg);
    padding: 40px;
    min-height: 320px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.sim-result__placeholder {
    text-align: center;
    color: var(--color-text-dim);
}

.sim-result__icon {
    width: 48px;
    height: 48px;
    margin: 0 auto 16px;
    color: var(--color-border);
}

.sim-result__icon svg {
    width: 100%;
    height: 100%;
}

.sim-result__placeholder p {
    font-size: 0.875rem;
}

.sim-result__output {
    width: 100%;
}

.sim-result__output.hidden {
    display: none;
}

.sim-result__level {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 16px;
}

.sim-result__level.level-low { color: var(--color-success); }
.sim-result__level.level-medium { color: var(--color-primary); }
.sim-result__level.level-high { color: var(--color-warning); }
.sim-result__level.level-very-high { color: var(--color-danger); }

.sim-result__bar {
    height: 6px;
    background: var(--color-border-subtle);
    border-radius: 3px;
    margin-bottom: 20px;
    overflow: hidden;
}

.sim-result__bar-fill {
    height: 100%;
    border-radius: 3px;
    transition: width 0.6s ease, background 0.6s ease;
}

.sim-result__details {
    font-size: 0.9375rem;
    color: var(--color-text-muted);
    line-height: 1.6;
    margin-bottom: 20px;
}

.sim-result__steps {
    background: var(--color-bg-alt);
    border-radius: var(--radius-md);
    padding: 16px 20px;
    margin-bottom: 24px;
}

.sim-result__steps h4 {
    font-size: 0.8125rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-primary);
    margin-bottom: 8px;
}

.sim-result__steps ul {
    list-style: none;
    padding: 0;
}

.sim-result__steps li {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    padding: 4px 0;
    padding-left: 16px;
    position: relative;
}

.sim-result__steps li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--color-primary);
}

/* ===== EXAMPLES ===== */
.examples__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 24px;
}

.example-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border-subtle);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all 0.3s ease;
}

.example-card:hover {
    border-color: var(--color-border);
    transform: translateY(-2px);
}

.example-card__visual {
    height: 160px;
    background: var(--color-bg);
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.example-card__frame {
    width: 120px;
    height: 90px;
    border: 2px solid var(--color-border);
    border-radius: 2px;
    position: relative;
}

.example-card__frame::before {
    content: '';
    position: absolute;
    top: -6px; left: -6px;
    width: 12px; height: 12px;
    border-top: 2px solid var(--color-primary);
    border-left: 2px solid var(--color-primary);
}

.example-card__frame::after {
    content: '';
    position: absolute;
    bottom: -6px; right: -6px;
    width: 12px; height: 12px;
    border-bottom: 2px solid var(--color-primary);
    border-right: 2px solid var(--color-primary);
}

.defect-marker {
    position: absolute;
    width: 16px;
    height: 16px;
    border: 2px solid var(--color-danger);
    border-radius: 50%;
    animation: pulse-defect 2s infinite;
}

.measure-line {
    position: absolute;
    height: 2px;
    background: var(--color-primary);
}

.measure-line::before,
.measure-line::after {
    content: '';
    position: absolute;
    top: -4px;
    width: 2px;
    height: 10px;
    background: var(--color-primary);
}

.measure-line::before { left: 0; }
.measure-line::after { right: 0; }

.presence-box {
    position: absolute;
    width: 20px;
    height: 20px;
    border: 2px dashed var(--color-danger);
    border-radius: 2px;
}

.presence-box.present {
    border-style: solid;
    border-color: var(--color-success);
    background: rgba(46, 204, 113, 0.1);
}

.contam-spot {
    position: absolute;
    width: 12px;
    height: 12px;
    background: rgba(231, 76, 60, 0.4);
    border: 1px solid var(--color-danger);
    border-radius: 50%;
}

.contam-spot.sm {
    width: 8px;
    height: 8px;
}

.ref-overlay {
    position: absolute;
    inset: 10px;
    border: 1px dashed var(--color-accent);
    opacity: 0.5;
    border-radius: 2px;
}

.measure-arc {
    position: absolute;
    width: 40px;
    height: 40px;
    border: 2px solid transparent;
    border-top-color: var(--color-primary);
    border-right-color: var(--color-primary);
    border-radius: 50%;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) rotate(-45deg);
}

.example-card h3 {
    font-size: 1rem;
    font-weight: 600;
    padding: 20px 24px 8px;
}

.example-card p {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    line-height: 1.6;
    padding: 0 24px 24px;
}

/* ===== ABOUT ===== */
.about {
    background: var(--color-bg-alt);
}

.about__content {
    max-width: 720px;
    margin: 0 auto;
    text-align: center;
}

.about__content h2 {
    font-size: clamp(1.75rem, 3vw, 2.25rem);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 24px;
    margin-top: 12px;
}

.about__content p {
    font-size: 1.0625rem;
    color: var(--color-text-muted);
    line-height: 1.8;
    margin-bottom: 16px;
}

.about__tags {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px;
    margin-top: 32px;
}

.about__tags span {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--color-text-dim);
    border: 1px solid var(--color-border-subtle);
    padding: 6px 12px;
    border-radius: var(--radius-sm);
}

/* ===== CONTACT ===== */
.contact__form {
    max-width: 720px;
    margin: 0 auto;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 20px;
}

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

.form-group--full {
    margin-bottom: 20px;
}

.form-group label {
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--color-text-muted);
    margin-bottom: 6px;
}

.form-group .optional {
    color: var(--color-text-dim);
    font-weight: 400;
}

.form-group input,
.form-group textarea {
    background: var(--color-surface);
    border: 1px solid var(--color-border-subtle);
    border-radius: var(--radius-md);
    padding: 12px 16px;
    font-size: 0.9375rem;
    color: var(--color-text);
    font-family: var(--font-main);
    transition: border-color 0.2s;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(0, 212, 170, 0.1);
}

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

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

.file-upload input[type="file"] {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

.file-upload {
    cursor: pointer;
    display: block;
}

.file-upload__area {
    border: 1px dashed var(--color-border);
    border-radius: var(--radius-md);
    padding: 24px;
    text-align: center;
    transition: all 0.2s;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: var(--color-text-muted);
}

.file-upload__area:hover {
    border-color: var(--color-primary);
    background: var(--color-primary-glow);
}

.file-upload__area svg {
    color: var(--color-text-dim);
}

.file-upload__area span {
    font-size: 0.875rem;
}

.file-upload__hint {
    font-size: 0.75rem !important;
    color: var(--color-text-dim) !important;
}

.contact__form .btn {
    width: 100%;
    margin-top: 8px;
}

/* ===== FOOTER ===== */
.footer {
    background: var(--color-bg);
    border-top: 1px solid var(--color-border-subtle);
    padding: 64px 0 32px;
}

.footer__grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 48px;
}

.footer__brand p {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    margin-top: 12px;
}

.footer__location {
    font-family: var(--font-mono);
    font-size: 0.8125rem !important;
    color: var(--color-text-dim) !important;
}

.footer__links h4,
.footer__contact h4 {
    font-size: 0.8125rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-muted);
    margin-bottom: 16px;
}

.footer__links ul {
    list-style: none;
}

.footer__links li {
    margin-bottom: 8px;
}

.footer__links a {
    font-size: 0.875rem;
    color: var(--color-text-dim);
}

.footer__links a:hover {
    color: var(--color-text);
}

.footer__contact a,
.footer__contact p {
    font-size: 0.875rem;
    color: var(--color-text-dim);
    display: block;
    margin-bottom: 8px;
}

.footer__contact a:hover {
    color: var(--color-primary);
}

.footer__bottom {
    border-top: 1px solid var(--color-border-subtle);
    padding-top: 24px;
    text-align: center;
}

.footer__bottom p {
    font-size: 0.8125rem;
    color: var(--color-text-dim);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
    .hero__container {
        grid-template-columns: 1fr;
        gap: 40px;
        text-align: center;
    }

    .hero__subtitle {
        max-width: 100%;
        margin-left: auto;
        margin-right: auto;
    }

    .hero__actions {
        justify-content: center;
    }

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

@media (max-width: 768px) {
    :root {
        --nav-height: 64px;
    }

    .nav__links {
        position: fixed;
        top: var(--nav-height);
        left: 0;
        right: 0;
        background: var(--color-bg);
        border-bottom: 1px solid var(--color-border);
        flex-direction: column;
        padding: 24px;
        gap: 16px;
        transform: translateY(-100%);
        opacity: 0;
        pointer-events: none;
        transition: all 0.3s ease;
    }

    .nav__links.active {
        transform: translateY(0);
        opacity: 1;
        pointer-events: all;
    }

    .nav__toggle {
        display: flex;
    }

    .nav__toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .nav__toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .nav__toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }

    section {
        padding: 80px 0;
    }

    .hero__container {
        padding: 40px 24px;
    }

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

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

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

@media (max-width: 480px) {
    .hero__title {
        font-size: 1.75rem;
    }

    .hero__actions {
        flex-direction: column;
    }

    .hero__actions .btn {
        width: 100%;
    }

    .services__grid,
    .industries__grid {
        grid-template-columns: 1fr;
    }
}