@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&family=Montserrat:wght@700;800;900&display=swap');

:root {
    --bg-base: #ffffff;      
    --surface-dark: #3BB143; 
    --text-dark: #111111;
    --text-muted: #444444;
    --text-light: #ffffff;   
    --text-light-muted: rgba(255, 255, 255, 0.9);
    --accent-orange: #111111;
    
    --line-dark: #111111;
    --line-light: #ffffff;
    --grid-gap: 3rem;
    --section-pad: 8rem 2rem;

    --font-heading: 'Montserrat', sans-serif;
    --font-main: 'Inter', -apple-system, sans-serif;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-main);
    background-color: var(--bg-base);
    background-image: radial-gradient(#d5d5d5 2px, transparent 2px);
    background-size: 32px 32px;
    color: var(--text-dark);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

main {
    flex-grow: 1;
}

h1 {
    font-family: var(--font-heading);
    font-size: 4.5rem;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: -0.02em;
    line-height: 1.05;
    margin-bottom: 1.5rem;
}

h2 {
    font-family: var(--font-heading);
    font-size: 3rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: -0.01em;
    margin-bottom: 2.5rem;
}

h3 {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 800;
    text-transform: uppercase;
    margin-bottom: 1rem;
}

p {
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--text-muted);
    max-width: 60ch;
    line-height: 1.6;
}

.dark-surface p {
    color: var(--text-light-muted);
}

.meta-label {
    font-family: var(--font-heading);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-dark);
    display: flex;
    align-items: center;
    margin-bottom: 1.5rem;
    font-weight: 800;
}

.meta-label::after {
    content: '';
    flex-grow: 1;
    height: 3px;
    background-color: var(--line-dark);
    margin-left: 1rem;
}

.dark-surface .meta-label {
    color: var(--text-light);
}

.dark-surface .meta-label::after {
    background-color: var(--line-light);
}

.container {
    max-width: 1280px;
    margin: 0 auto;
}

.hero {
    background-color: var(--surface-dark);
    background-image: radial-gradient(rgba(255,255,255,0.2) 2px, transparent 2px);
    background-size: 32px 32px;
    color: var(--text-light);
    padding: 3rem 2rem;
    min-height: 90vh;
    display: flex;
    flex-direction: column;
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 2rem;
    border-bottom: 4px solid var(--line-light);
    margin-bottom: 6rem;
}

.logo {
    font-family: var(--font-heading);
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 1.5rem;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: -0.02em;
    text-decoration: none;
    color: inherit;
}

.logo svg {
    width: 28px;
    height: 28px;
    stroke: var(--text-light);
    stroke-width: 4;
    fill: none;
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-links a {
    color: var(--text-light);
    text-decoration: none;
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    transition: opacity 0.2s;
}

.nav-links a:hover {
    opacity: 0.7;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--grid-gap);
    flex-grow: 1;
    align-items: center;
}

.hero-visual {
    position: relative;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.data-ring {
    width: 320px;
    height: 320px;
    border: 4px solid var(--line-light);
    border-radius: 50%;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.data-ring::before {
    content: '';
    position: absolute;
    width: 270px;
    height: 270px;
    border: 3px dashed rgba(255, 255, 255, 0.5);
    border-radius: 50%;
}

.data-core {
    width: 16px;
    height: 16px;
    background-color: var(--text-light);
    border-radius: 50%;
    box-shadow: 0 0 0 10px rgba(255, 255, 255, 0.2);
}

.readout {
    position: absolute;
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.readout.top { top: -20px; left: 50%; transform: translateX(-50%); text-align: center;}
.readout.right { right: -60px; top: 50%; transform: translateY(-50%); text-align: left; }
.readout.bottom { bottom: -20px; left: 50%; transform: translateX(-50%); text-align: center;}

.readout-val { font-family: var(--font-heading); font-size: 1.75rem; font-weight: 800; color: var(--text-light); }
.readout-lbl { font-family: var(--font-heading); color: var(--text-light-muted); text-transform: uppercase; letter-spacing: 0.1em; font-size: 0.75rem; font-weight: 800; }

.section {
    padding: var(--section-pad);
}

.sensor-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 4rem;
    margin-top: 3rem;
}

.sensor-card {
    border-top: 4px solid var(--line-dark);
    padding-top: 2rem;
    background-color: transparent;
}

.status-indicator {
    display: inline-flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.status-ring {
    width: 24px;
    height: 24px;
    border: 3px solid var(--text-dark);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.status-dot {
    width: 8px;
    height: 8px;
    background-color: var(--text-dark);
    border-radius: 50%;
}

.status-label {
    font-family: var(--font-heading);
    font-size: 0.85rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.specs-container {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 4rem;
    border-top: 4px solid var(--line-dark);
    padding-top: 4rem;
}

.spec-group {
    margin-bottom: 4rem;
}

.spec-list {
    list-style: none;
    width: 100%;
    border-top: 3px solid var(--text-dark);
}

.spec-row {
    display: flex;
    padding: 1.5rem 0;
    border-bottom: 3px solid var(--text-dark);
    align-items: baseline;
}

.spec-term {
    flex: 0 0 35%;
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 0.95rem;
    text-transform: uppercase;
    color: var(--text-dark);
}

.spec-desc {
    flex: 1;
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-muted);
}

.type-showcase {
    font-family: var(--font-heading);
    font-size: 0.8rem;
    font-weight: 800;
    color: var(--text-light);
    background-color: var(--text-dark);
    margin-top: 2rem;
    padding: 1rem 1.5rem;
    border: none;
    display: inline-block;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

/* Form Styles */
.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    max-width: 600px;
    margin-top: 2rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-dark);
}

.form-control {
    padding: 1rem;
    border: 3px solid var(--line-dark);
    background: transparent;
    font-family: var(--font-main);
    font-size: 1rem;
    color: var(--text-dark);
    outline: none;
    transition: all 0.2s ease;
}

.form-control:focus {
    background: var(--line-dark);
    color: var(--text-light);
}

.form-control::placeholder {
    color: var(--text-muted);
    opacity: 0.7;
}

textarea.form-control {
    resize: vertical;
    min-height: 150px;
}

.submit-btn {
    padding: 1.2rem 2rem;
    background-color: var(--text-dark);
    color: var(--text-light);
    border: none;
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    cursor: pointer;
    transition: background-color 0.2s;
    align-self: flex-start;
}

.submit-btn:hover {
    background-color: var(--surface-dark);
}

@media (max-width: 1024px) {
    h1 { font-size: 3.5rem; }
    h2 { font-size: 2.5rem; }
    .hero-content { grid-template-columns: 1fr; text-align: center; }
    .hero-visual { display: none; }
    .meta-label::after { margin-right: 1rem; }
    .sensor-grid { grid-template-columns: 1fr; gap: 3rem; }
    .specs-container { grid-template-columns: 1fr; gap: 3rem; }
    .spec-row { flex-direction: column; gap: 0.5rem; }
}

@media (max-width: 768px) {
    h1 { font-size: 2.5rem; }
    h2 { font-size: 2rem; }
    .section { padding: 4rem 1.5rem; }
    .nav { flex-direction: column; gap: 1.5rem; }
}