@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800&family=JetBrains+Mono:wght@400;500;700&display=swap');

/* --- CSS Variables & Design System --- */
:root {
    /* Color Palette */
    --bg-primary: #f8fafc;    /* Soft Slate 50 */
    --bg-secondary: #ffffff;  /* Pure White */
    --bg-tertiary: #f1f5f9;   /* Slate 100 */
    
    --card-bg: rgba(255, 255, 255, 0.75);
    --card-border: rgba(226, 232, 240, 0.8);
    --card-border-hover: rgba(203, 213, 225, 1);
    
    --text-primary: #0f172a;  /* Slate 900 */
    --text-secondary: #475569;/* Slate 600 */
    --text-muted: #64748b;    /* Slate 500 */
    
    /* Premium Accents for Voltages */
    --color-lv: #0891b2;      /* Cyan 600 - Low Voltage */
    --color-lv-glow: rgba(8, 145, 178, 0.25);
    
    --color-mv: #2563eb;      /* Blue 600 - Medium Voltage */
    --color-mv-glow: rgba(37, 99, 235, 0.25);
    
    --color-ehv: #d97706;     /* Amber 600 - Extra High Voltage */
    --color-ehv-glow: rgba(217, 119, 6, 0.25);
    
    --accent-success: #059669; /* Emerald 600 */
    --accent-danger: #dc2626;  /* Red 600 */
    
    /* Font Families */
    --font-sans: 'Outfit', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    
    /* Layout Constants */
    --header-height: 80px;
    --transition-smooth: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
    --border-radius: 12px;
}

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

html, body {
    scroll-behavior: smooth;
    font-size: 16px;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-sans);
    line-height: 1.6;
    overflow-x: hidden;
    max-width: 100%;
    position: relative;
}

/* Background grid glow overlay */
body::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1200px;
    background: radial-gradient(circle at 50% -20%, rgba(8, 145, 178, 0.08) 0%, rgba(37, 99, 235, 0.03) 50%, transparent 100%);
    z-index: -1;
    pointer-events: none;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
    background: var(--bg-tertiary);
    border-radius: 4px;
    border: 2px solid var(--bg-primary);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

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

li {
    list-style: none;
}

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.25;
}

/* --- Helper Classes & Layout --- */
.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
    width: 100%;
}

.glass-panel {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-radius: var(--border-radius);
    transition: var(--transition-smooth);
}

.glass-panel:hover {
    border-color: var(--card-border-hover);
    box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
}

.badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 12px;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border: 1px solid transparent;
}

.badge-lv {
    background: rgba(6, 182, 212, 0.1);
    color: var(--color-lv);
    border-color: rgba(6, 182, 212, 0.2);
}

.badge-mv {
    background: rgba(59, 130, 246, 0.1);
    color: var(--color-mv);
    border-color: rgba(59, 130, 246, 0.2);
}

.badge-ehv {
    background: rgba(245, 158, 11, 0.1);
    color: var(--color-ehv);
    border-color: rgba(245, 158, 11, 0.2);
}

/* --- Button Styles --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: var(--transition-smooth);
    border: 1px solid transparent;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-lv), var(--color-mv));
    color: #ffffff;
    box-shadow: 0 4px 15px rgba(8, 145, 178, 0.2);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(8, 145, 178, 0.3);
    filter: brightness(1.1);
}

.btn-outline {
    background: transparent;
    border-color: var(--card-border-hover);
    color: var(--text-primary);
}

.btn-outline:hover {
    background: rgba(0, 0, 0, 0.03);
    border-color: var(--text-primary);
    transform: translateY(-2px);
}

.btn-glow-cyan {
    border-color: var(--color-lv);
    color: var(--color-lv);
    box-shadow: 0 0 10px rgba(8, 145, 178, 0.1);
}

.btn-glow-cyan:hover {
    background: var(--color-lv);
    color: #ffffff;
    box-shadow: 0 0 20px rgba(8, 145, 178, 0.3);
}

/* --- Header & Navigation --- */
header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    z-index: 100;
    display: flex;
    align-items: center;
}

.navbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    position: relative;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-icon {
    width: 32px;
    height: 32px;
    stroke: var(--color-lv);
    fill: none;
    stroke-width: 2;
    filter: drop-shadow(0 0 8px var(--color-lv-glow));
}

.logo-text {
    font-size: 1.25rem;
    font-weight: 800;
    letter-spacing: 0.05em;
    background: linear-gradient(135deg, var(--text-primary), var(--text-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav-links {
    display: flex;
    gap: 32px;
}

.nav-links a {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: var(--transition-smooth);
    position: relative;
    padding: 8px 0;
}

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

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--color-lv), var(--color-mv));
    transition: var(--transition-smooth);
}

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

.burger-menu {
    display: none;
    flex-direction: column;
    gap: 6px;
    background: none;
    border: none;
    cursor: pointer;
}

.burger-menu span {
    width: 25px;
    height: 2px;
    background-color: var(--text-primary);
    transition: var(--transition-smooth);
}

/* --- Hero Section --- */
.hero {
    position: relative;
    min-height: 100vh;
    padding-top: calc(var(--header-height) + 40px);
    display: flex;
    align-items: center;
    background-image: linear-gradient(to right, rgba(248, 250, 252, 0.98) 45%, rgba(248, 250, 252, 0.6) 70%, rgba(248, 250, 252, 0.95) 100%), url('assets/panel_hero.png');
    background-size: cover;
    background-position: center right;
    overflow: hidden;
}

.hero-content {
    max-width: 650px;
    z-index: 2;
}

.hero-subtitle {
    color: var(--color-lv);
    text-transform: uppercase;
    letter-spacing: 0.15em;
    font-weight: 700;
    font-size: 0.85rem;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.hero-subtitle::before {
    content: '';
    display: inline-block;
    width: 12px;
    height: 2px;
    background-color: var(--color-lv);
    box-shadow: 0 0 8px var(--color-lv);
}

.hero-title {
    font-size: 3.5rem;
    line-height: 1.15;
    margin-bottom: 24px;
    background: linear-gradient(135deg, var(--text-primary) 60%, var(--text-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-title span {
    background: linear-gradient(135deg, var(--color-lv), var(--color-mv));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    position: relative;
}

.hero-desc {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-bottom: 40px;
    line-height: 1.7;
}

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

/* --- Ticker / Telemetry Bar --- */
.ticker-section {
    background: var(--bg-secondary);
    border-top: 1px solid rgba(0, 0, 0, 0.06);
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
    padding: 16px 0;
}

.ticker-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
    flex-wrap: wrap;
}

.ticker-item {
    display: flex;
    align-items: center;
    gap: 12px;
}

.ticker-icon {
    width: 20px;
    height: 20px;
    stroke: var(--color-lv);
    fill: none;
    stroke-width: 2;
}

.ticker-label {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
}

.ticker-value {
    font-family: var(--font-mono);
    font-weight: 700;
    color: var(--text-primary);
    font-size: 1rem;
}

/* --- Section Formatting --- */
.section {
    padding: 100px 0;
    position: relative;
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 64px auto;
}

.section-tag {
    color: var(--color-lv);
    font-weight: 700;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 12px;
    display: inline-block;
}

.section-title {
    font-size: 2.25rem;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.section-desc {
    color: var(--text-secondary);
    font-size: 1.05rem;
}

/* --- Products Showcase --- */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(min(100%, 340px), 1fr));
    gap: 32px;
}

.product-card {
    position: relative;
    overflow: hidden;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.product-image-container {
    height: 260px;
    overflow: hidden;
    position: relative;
    border-bottom: 1px solid var(--card-border);
    background: #ffffff;
    padding: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.product-img {
    max-width: 100%;
    max-height: 100%;
    width: auto;
    height: auto;
    object-fit: contain;
    transition: var(--transition-smooth);
}

.product-card:hover .product-img {
    transform: scale(1.04);
}

.product-glow-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    opacity: 0;
    mix-blend-mode: color-dodge;
    transition: var(--transition-smooth);
    pointer-events: none;
}

.product-card:hover .product-glow-overlay {
    opacity: 0.25;
}

.product-body {
    padding: 32px;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.product-badge-row {
    margin-bottom: 16px;
}

.product-card-title {
    font-size: 1.5rem;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.product-card-desc {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 24px;
    line-height: 1.6;
}

.product-specs {
    border-top: 1px dashed var(--card-border);
    padding-top: 16px;
    margin-top: auto;
}

.spec-item {
    display: flex;
    justify-content: space-between;
    font-size: 0.85rem;
    margin-bottom: 8px;
}

.spec-label {
    color: var(--text-muted);
}

.spec-val {
    font-weight: 500;
    color: var(--text-primary);
}

/* Specific product glows on hover */
.product-card.lv-card:hover {
    border-color: var(--color-lv);
    box-shadow: 0 0 20px rgba(6, 182, 212, 0.15);
}
.product-card.mv-card:hover {
    border-color: var(--color-mv);
    box-shadow: 0 0 20px rgba(59, 130, 246, 0.15);
}
.product-card.ehv-card:hover {
    border-color: var(--color-ehv);
    box-shadow: 0 0 20px rgba(245, 158, 11, 0.15);
}

/* --- Figma Configurator Section --- */
.configurator-section {
    background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
}

.config-container {
    display: grid;
    grid-template-columns: 450px 1fr;
    gap: 32px;
    align-items: stretch;
}

.config-panel {
    padding: 32px;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.config-group-title {
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-muted);
    margin-bottom: 12px;
    font-weight: 600;
}

.segment-selector {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
    background: var(--bg-primary);
    padding: 6px;
    border-radius: 8px;
    border: 1px solid var(--card-border);
}

.seg-btn {
    background: transparent;
    border: none;
    padding: 10px 4px;
    border-radius: 6px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition-smooth);
    text-align: center;
}

.seg-btn.active {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.seg-btn.active[data-seg="lv"] {
    box-shadow: 0 0 10px rgba(6, 182, 212, 0.2);
    border: 1px solid rgba(6, 182, 212, 0.3);
    color: var(--color-lv);
}

.seg-btn.active[data-seg="mv"] {
    box-shadow: 0 0 10px rgba(59, 130, 246, 0.2);
    border: 1px solid rgba(59, 130, 246, 0.3);
    color: var(--color-mv);
}

.seg-btn.active[data-seg="ehv"] {
    box-shadow: 0 0 10px rgba(245, 158, 11, 0.2);
    border: 1px solid rgba(245, 158, 11, 0.3);
    color: var(--color-ehv);
}

.select-dropdown {
    width: 100%;
    background: var(--bg-primary);
    border: 1px solid var(--card-border);
    border-radius: 8px;
    padding: 12px;
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: 0.95rem;
    outline: none;
    cursor: pointer;
    transition: var(--transition-smooth);
}

.select-dropdown:focus {
    border-color: var(--color-lv);
}

.options-checkboxes {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 12px;
    cursor: pointer;
    font-size: 0.95rem;
    color: var(--text-secondary);
    transition: var(--transition-smooth);
}

.checkbox-label:hover {
    color: var(--text-primary);
}

.checkbox-label input {
    appearance: none;
    -webkit-appearance: none;
    width: 20px;
    height: 20px;
    border: 1px solid var(--card-border);
    border-radius: 4px;
    outline: none;
    background-color: var(--bg-primary);
    cursor: pointer;
    display: inline-grid;
    place-content: center;
    transition: var(--transition-smooth);
}

.checkbox-label input::before {
    content: "";
    width: 10px;
    height: 10px;
    transform: scale(0);
    transition: 120ms transform ease-in-out;
    box-shadow: inset 1em 1em var(--color-lv);
    border-radius: 2px;
}

.checkbox-label input:checked::before {
    transform: scale(1);
}

.checkbox-label input:checked {
    border-color: var(--color-lv);
    box-shadow: 0 0 8px var(--color-lv-glow);
}

.config-preview-panel {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 24px;
    min-height: 550px;
}

.preview-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--card-border);
    padding-bottom: 16px;
}

.preview-title {
    font-size: 1.15rem;
    display: flex;
    align-items: center;
    gap: 12px;
}

.preview-grid-layout {
    display: grid;
    grid-template-columns: 1fr 280px;
    gap: 24px;
    align-items: center;
    flex-grow: 1;
    margin: 20px 0;
}

.svg-display {
    width: 100%;
    height: 420px;
    background: #f1f5f9;
    border-radius: 8px;
    border: 1px solid var(--card-border);
    padding: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.spec-sheet {
    background: rgba(255, 255, 255, 0.01);
    border-left: 1px solid var(--card-border);
    padding-left: 24px;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
}

.spec-sheet-title {
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    margin-bottom: 16px;
    font-weight: 600;
}

.spec-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.spec-row {
    font-size: 0.85rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.02);
    padding-bottom: 8px;
}

.spec-row-lbl {
    color: var(--text-muted);
    margin-bottom: 2px;
}

.spec-row-val {
    color: var(--text-primary);
    font-weight: 500;
}

.preview-footer {
    display: flex;
    justify-content: flex-end;
    gap: 16px;
    border-top: 1px solid var(--card-border);
    padding-top: 16px;
}

/* --- SVG Schematic Styling & Animations --- */
.svg-panel-body {
    fill: #e2e8f0;
    stroke: #94a3b8;
    stroke-width: 3;
}

.svg-panel-frame {
    fill: none;
    stroke: #475569;
    stroke-width: 4;
}

.svg-breaker-drawer {
    fill: #f1f5f9;
    stroke: #e2e8f0;
    stroke-width: 2;
    transition: var(--transition-smooth);
}

.svg-breaker-drawer.active {
    stroke: var(--color-lv);
    filter: drop-shadow(0 0 4px var(--color-lv-glow));
}

.svg-meter-bg {
    fill: #020617;
    stroke: #1e293b;
    stroke-width: 1.5;
}

.svg-meter-text {
    font-family: var(--font-mono);
    fill: #22c55e;
    font-weight: bold;
}

.svg-indicator-red {
    fill: var(--accent-danger);
    filter: drop-shadow(0 0 3px rgba(239, 68, 68, 0.6));
}

.svg-indicator-green {
    fill: var(--accent-success);
    filter: drop-shadow(0 0 3px rgba(16, 185, 129, 0.6));
}

.svg-fan-blade {
    fill: #475569;
    transform-origin: 50% 50%;
    animation: fan-spin 1.5s linear infinite;
}

@keyframes fan-spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* Mimic flow line animations */
.svg-flow-line {
    fill: none;
    stroke-width: 3;
    stroke-dasharray: 6, 6;
    animation: flow-dash 1.2s linear infinite;
}

.flow-active-lv {
    stroke: var(--color-lv);
}

.flow-active-mv {
    stroke: var(--color-mv);
}

.flow-active-ehv {
    stroke: var(--color-ehv);
}

@keyframes flow-dash {
    to {
        stroke-dashoffset: -12;
    }
}

/* --- Capabilities Section --- */
.capabilities-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 16px;
}

.cap-card {
    padding: 32px 24px;
    text-align: center;
    position: relative;
}

.cap-num {
    font-family: var(--font-mono);
    font-size: 2rem;
    font-weight: 800;
    color: var(--text-muted);
    opacity: 0.15;
    position: absolute;
    top: 16px;
    left: 24px;
}

.cap-icon-box {
    width: 64px;
    height: 64px;
    border-radius: 16px;
    background: rgba(0, 0, 0, 0.02);
    border: 1px solid var(--card-border);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px auto;
    transition: var(--transition-smooth);
}

.cap-card:hover .cap-icon-box {
    transform: scale(1.1);
    border-color: var(--color-lv);
    background: rgba(6, 182, 212, 0.05);
}

.cap-svg {
    width: 32px;
    height: 32px;
    stroke: var(--text-secondary);
    fill: none;
    stroke-width: 2;
    transition: var(--transition-smooth);
}

.cap-card:hover .cap-svg {
    stroke: var(--color-lv);
    filter: drop-shadow(0 0 5px var(--color-lv-glow));
}

.cap-title {
    font-size: 1.1rem;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.cap-desc {
    color: var(--text-secondary);
    font-size: 0.85rem;
}

/* --- OEM Partners & Credentials --- */
.partners-section {
    background: var(--bg-secondary);
    border-top: 1px solid rgba(0, 0, 0, 0.06);
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
    padding: 60px 0;
}

.partners-title {
    text-align: center;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--text-muted);
    margin-bottom: 40px;
    font-weight: 700;
}

.partners-flex {
    display: flex;
    justify-content: space-around;
    align-items: center;
    gap: 32px;
    flex-wrap: wrap;
}

.partner-logo-item {
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    opacity: 0.5;
    transition: var(--transition-smooth);
    display: flex;
    align-items: center;
    gap: 8px;
}

.partner-logo-item svg {
    width: 24px;
    height: 24px;
    fill: currentColor;
}

.partner-logo-item:hover {
    opacity: 0.95;
    color: var(--text-primary);
    filter: drop-shadow(0 0 8px rgba(255, 255, 255, 0.25));
}

/* --- Contact Section --- */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 48px;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.contact-card {
    padding: 24px;
    display: flex;
    align-items: flex-start;
    gap: 20px;
}

.contact-icon-box {
    width: 48px;
    height: 48px;
    border-radius: 8px;
    background: rgba(6, 182, 212, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-icon {
    width: 24px;
    height: 24px;
    stroke: var(--color-lv);
    fill: none;
    stroke-width: 2;
}

.contact-card-title {
    font-size: 1.05rem;
    font-weight: 600;
    margin-bottom: 6px;
}

.contact-card-detail {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.contact-form {
    padding: 40px;
}

.form-title {
    font-size: 1.5rem;
    margin-bottom: 8px;
}

.form-desc {
    color: var(--text-secondary);
    margin-bottom: 32px;
    font-size: 0.95rem;
}

.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 24px;
}

.form-group-full {
    grid-column: span 2;
}

.input-label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.form-input {
    width: 100%;
    background: var(--bg-primary);
    border: 1px solid var(--card-border);
    border-radius: 8px;
    padding: 12px 16px;
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: 0.95rem;
    transition: var(--transition-smooth);
    outline: none;
}

.form-input:focus {
    border-color: var(--color-lv);
    box-shadow: 0 0 10px rgba(6, 182, 212, 0.15);
}

textarea.form-input {
    resize: none;
    height: 120px;
}

/* --- Footer --- */
footer {
    background: #f1f5f9;
    border-top: 1px solid rgba(0, 0, 0, 0.06);
    padding: 64px 0 32px 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1.5fr;
    gap: 48px;
    margin-bottom: 48px;
}

.footer-logo-desc {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-top: 16px;
    line-height: 1.7;
}

.footer-col-title {
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-primary);
    margin-bottom: 24px;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-links a {
    color: var(--text-secondary);
    font-size: 0.9rem;
    transition: var(--transition-smooth);
}

.footer-links a:hover {
    color: var(--color-lv);
    padding-left: 4px;
}

.footer-newsletter-desc {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 16px;
}

.newsletter-form {
    display: flex;
    gap: 8px;
}

.newsletter-form input {
    flex-grow: 1;
}

.footer-bottom {
    border-top: 1px solid rgba(0, 0, 0, 0.06);
    padding-top: 32px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text-muted);
    font-size: 0.85rem;
    flex-wrap: wrap;
    gap: 16px;
}

/* --- Responsive Layout Breakpoints --- */
@media (max-width: 1100px) {
    .config-container {
        grid-template-columns: 1fr;
    }
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .capabilities-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 900px) {
    .hero {
        background-image: linear-gradient(to bottom, rgba(248, 250, 252, 0.98) 60%, rgba(248, 250, 252, 0.85) 100%), url('assets/panel_hero.png');
        background-position: center;
    }
    .hero-title {
        font-size: 2.75rem;
    }
    .contact-grid {
        grid-template-columns: 1fr;
    }
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    .burger-menu {
        display: flex;
    }
    .btn-header {
        display: none;
    }
    .preview-grid-layout {
        grid-template-columns: 1fr;
    }
    .spec-sheet {
        border-left: none;
        border-top: 1px solid var(--card-border);
        padding-left: 0;
        padding-top: 24px;
    }
    .capabilities-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2.25rem;
    }
    .products-grid {
        grid-template-columns: 1fr;
    }
    .capabilities-grid {
        grid-template-columns: 1fr;
    }
    .form-grid {
        grid-template-columns: 1fr;
    }
    .form-group-full {
        grid-column: span 1;
    }
    .footer-grid {
        grid-template-columns: 1fr;
    }
}