:root {
    --color-bg-light-1: #f4f8fc;
    --color-bg-light-2: #eaf1f7;
    --color-bg-light-3: #dce7f2;

    --color-text-dunkel-1: #1c2a39;
    --color-text-dunkel-2: #132238;
    --color-text-dunkel-4: #2b2f33;

    --color-text-hell-1: #ffffff;

    --color-akzent-1: #f7a600;
    --color-akzent-1-hover: #d88f00;
    --color-akzent-3: #1e6fd9;
    --color-akzent-3-hover: #1556a8;

    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 32px;

    --shadow-soft: 0 12px 30px rgba(16, 34, 56, 0.08);
    --shadow-medium: 0 16px 40px rgba(16, 34, 56, 0.12);

    --container-width: 1200px;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body.solartech-body {
    margin: 0;
    font-family: "Inter", sans-serif;
    background:
        radial-gradient(circle at top left, rgba(30, 111, 217, 0.08), transparent 30%),
        linear-gradient(180deg, var(--color-bg-light-1), var(--color-bg-light-2));
    color: var(--color-text-dunkel-1);
    line-height: 1.6;
}

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

a {
    text-decoration: none;
    color: var(--color-akzent-3);
    transition: 0.25s ease;
}

a:hover {
    color: var(--color-akzent-3-hover);
}

h1, h2, h3 {
    margin-top: 0;
    color: var(--color-text-dunkel-2);
    line-height: 1.2;
}

p {
    margin-top: 0;
}

.solartech-container {
    width: min(var(--container-width), calc(100% - 32px));
    margin: 0 auto;
}

/* Header */
.solartech-header {
    position: sticky;
    top: 0;
    z-index: 50;
    backdrop-filter: blur(14px);
    background: rgba(244, 248, 252, 0.82);
    border-bottom: 1px solid rgba(19, 34, 56, 0.08);
}

.solartech-header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 0;
}

.solartech-header-logo {
    height: 70px;
    width: auto;
}

.solartech-header-cta {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 20px;
    border-radius: 999px;
    background: var(--color-akzent-1);
    color: #fff;
    font-weight: 700;
}

.solartech-header-cta:hover {
    background: var(--color-akzent-1-hover);
    color: #fff;
}

/* Hero */
.solartech-hero {
    padding: 72px 0 48px;
}

.solartech-hero-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 24px;
    align-items: center;
    background: linear-gradient(135deg, #ffffff, #edf4fb);
    border-radius: var(--radius-xl);
    padding: 48px;
    box-shadow: var(--shadow-medium);
}

.solartech-badge {
    display: inline-block;
    margin-bottom: 18px;
    padding: 8px 14px;
    border-radius: 999px;
    background: rgba(30, 111, 217, 0.08);
    color: var(--color-akzent-3);
    font-size: 0.9rem;
    font-weight: 700;
}

.solartech-hero h1 {
    font-size: clamp(2.2rem, 5vw, 4.2rem);
    margin-bottom: 16px;
}

.solartech-hero p {
    max-width: 700px;
    color: var(--color-text-dunkel-4);
    font-size: 1.05rem;
}

.solartech-hero-actions {
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
    margin-top: 26px;
}

.btn-primary,
.btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 22px;
    border-radius: 999px;
    font-weight: 700;
    transition: 0.25s ease;
}

.btn-primary {
    background: var(--color-akzent-1);
    color: #fff;
    box-shadow: 0 10px 24px rgba(247, 166, 0, 0.24);
}

.btn-primary:hover {
    background: var(--color-akzent-1-hover);
    color: #fff;
    transform: translateY(-2px);
}

.btn-secondary {
    background: #fff;
    border: 1px solid rgba(30, 111, 217, 0.16);
}

.btn-secondary:hover {
    background: var(--color-bg-light-2);
}

.solartech-hero-card {
    background: linear-gradient(135deg, #132238, #1d3550);
    color: var(--color-text-hell-1);
    border-radius: var(--radius-lg);
    padding: 28px;
    box-shadow: var(--shadow-soft);
}

.solartech-hero-card h3 {
    color: #fff;
    margin-bottom: 14px;
}

.solartech-hero-card ul {
    margin: 0;
    padding-left: 18px;
}

/* Sections */
.solartech-section {
    padding: 32px 0 48px;
}

.solartech-section-soft {
    background: rgba(255, 255, 255, 0.45);
}

.solartech-section-head {
    max-width: 760px;
    margin-bottom: 28px;
}

.solartech-section-head h2 {
    font-size: 2rem;
    margin-bottom: 12px;
}

.solartech-section-head p {
    color: var(--color-text-dunkel-4);
}

/* Cards */
.solartech-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.solartech-card {
    background: #fff;
    padding: 28px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-soft);
    border: 1px solid rgba(19, 34, 56, 0.06);
}

.solartech-card h3 {
    margin-bottom: 12px;
}

/* Steps */
.solartech-steps {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.solartech-step {
    background: #fff;
    padding: 28px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-soft);
    border: 1px solid rgba(19, 34, 56, 0.06);
}

.solartech-step span {
    display: inline-flex;
    width: 42px;
    height: 42px;
    border-radius: 50%;
    align-items: center;
    justify-content: center;
    background: rgba(30, 111, 217, 0.1);
    color: var(--color-akzent-3);
    font-weight: 800;
    margin-bottom: 14px;
}

/* Contact */
.solartech-contact-box {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    background: linear-gradient(135deg, #ffffff, #edf4fb);
    padding: 36px;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-medium);
}

.solartech-contact-info p:last-child {
    margin-bottom: 0;
}

/* Footer */
.solartech-footer {
    border-top: 1px solid rgba(19, 34, 56, 0.08);
    background: rgba(255, 255, 255, 0.7);
}

.solartech-footer-inner {
    min-height: 72px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
}

/* Responsive */
@media (max-width: 992px) {
    .solartech-hero-grid,
    .solartech-cards,
    .solartech-steps,
    .solartech-contact-box {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .solartech-header-inner {
        gap: 16px;
    }

    .solartech-header-logo {
        height: 56px;
    }

    .solartech-hero {
        padding: 40px 0 32px;
    }

    .solartech-hero-grid,
    .solartech-contact-box,
    .solartech-card,
    .solartech-step {
        padding: 24px;
    }

    .btn-primary,
    .btn-secondary,
    .solartech-header-cta {
        width: 100%;
    }

    .solartech-header-inner,
    .solartech-footer-inner {
        flex-direction: column;
        align-items: stretch;
    }
}