/* ============================================================
   Energieverbond — Eigen Huis × Independer (helder, praktisch)
   ============================================================ */

:root {
    --color-bg: #f4f7fb;
    --color-bg-soft: #e8eef6;
    --color-surface: #ffffff;
    --color-ink: #1a2433;
    --color-ink-muted: #5a6a7d;
    --color-line: #d5dee8;
    --color-brand: #0b4f8a;
    --color-brand-soft: #e7f1fb;
    --color-accent: #00a37a;
    --color-accent-hover: #008c69;
    --color-accent-soft: #e6f7f1;
    --color-success: #0d7a4f;
    --color-error: #b42318;
    --color-white: #ffffff;

    --font-display: "Outfit", "Segoe UI", sans-serif;
    --font-sans: "Source Sans 3", "Segoe UI", sans-serif;

    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2.5rem;
    --space-xl: 4rem;
    --space-2xl: 5.5rem;

    --radius-sm: 8px;
    --radius-md: 12px;
    --shadow-form: 0 12px 40px rgba(26, 36, 51, 0.08);
    --transition: 0.18s ease;
}

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
    margin: 0;
    font-family: var(--font-sans);
    font-size: 1.0625rem;
    line-height: 1.65;
    color: var(--color-ink);
    background: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    min-height: 100vh;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--color-brand); text-decoration: underline; text-underline-offset: 0.15em; transition: color var(--transition); }
a:hover { color: var(--color-accent); }

h1, h2, h3 {
    font-family: var(--font-display);
    font-weight: 650;
    line-height: 1.2;
    margin: 0 0 var(--space-sm);
    letter-spacing: -0.02em;
    color: var(--color-ink);
}

h1 { font-size: clamp(2.1rem, 4.8vw, 3.25rem); font-weight: 700; }
h2 { font-size: clamp(1.65rem, 3.2vw, 2.25rem); }
h3 { font-size: 1.2rem; font-weight: 650; }

p { margin: 0 0 var(--space-sm); }

.skip-link {
    position: absolute;
    top: -100%;
    left: var(--space-sm);
    background: var(--color-accent);
    color: var(--color-white);
    padding: 0.5rem 1rem;
    z-index: 100;
    text-decoration: none;
    border-radius: var(--radius-sm);
}
.skip-link:focus { top: var(--space-sm); }

.container {
    width: min(1100px, calc(100% - 2rem));
    margin-inline: auto;
}
.container--narrow { width: min(680px, calc(100% - 2rem)); }

/* Header */
.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(255, 255, 255, 0.94);
    border-bottom: 1px solid var(--color-line);
    backdrop-filter: blur(10px);
}
.site-header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.85rem 0;
    gap: 1rem;
}

.logo {
    display: inline-flex;
    align-items: center;
    gap: 0.65rem;
    color: var(--color-brand);
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 1.15rem;
    letter-spacing: -0.02em;
    text-decoration: none;
}
.logo__mark {
    width: 28px;
    height: 28px;
    border-radius: 8px;
    background: linear-gradient(145deg, var(--color-brand) 0%, #1470b8 55%, var(--color-accent) 100%);
    box-shadow: inset 0 0 0 2px rgba(255, 255, 255, 0.25);
}
.logo:hover { color: var(--color-accent); text-decoration: none; }

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.45rem;
    border: 0;
    border-radius: var(--radius-sm);
    padding: 0.8rem 1.35rem;
    font: inherit;
    font-weight: 650;
    cursor: pointer;
    text-decoration: none;
    transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
}
.btn--primary {
    background: var(--color-accent);
    color: var(--color-white);
    box-shadow: 0 1px 0 rgba(0, 0, 0, 0.06);
}
.btn--primary:hover {
    background: var(--color-accent-hover);
    color: var(--color-white);
    text-decoration: none;
    transform: translateY(-1px);
}
.btn--small { padding: 0.5rem 1rem; font-size: 0.95rem; }
.btn--full { width: 100%; }
.btn--ghost {
    background: transparent;
    color: var(--color-brand);
    border: 1px solid var(--color-line);
}
.btn--ghost:hover {
    border-color: var(--color-brand);
    text-decoration: none;
}

/* Hero — one composition, brand first */
.hero {
    position: relative;
    padding: clamp(2.5rem, 6vw, 4.25rem) 0 clamp(3rem, 7vw, 4.75rem);
    background:
        radial-gradient(ellipse 70% 80% at 100% 0%, rgba(0, 163, 122, 0.12), transparent 55%),
        radial-gradient(ellipse 60% 70% at 0% 20%, rgba(11, 79, 138, 0.12), transparent 50%),
        linear-gradient(180deg, #ffffff 0%, var(--color-bg) 100%);
    overflow: hidden;
}
.hero__atmosphere { display: none; }
.hero__inner {
    position: relative;
    display: grid;
    gap: 2rem;
    align-items: start;
}
@media (min-width: 900px) {
    .hero__inner {
        grid-template-columns: 1.15fr 0.85fr;
        gap: 3rem;
        align-items: center;
    }
}
.hero__copy { max-width: 36rem; }
.hero__brand {
    font-family: var(--font-display);
    font-size: clamp(1.75rem, 3.5vw, 2.35rem);
    font-weight: 700;
    color: var(--color-brand);
    margin: 0 0 0.75rem;
    letter-spacing: -0.03em;
}
.hero__eyebrow {
    display: inline-block;
    margin: 0 0 0.85rem;
    padding: 0.3rem 0.7rem;
    background: var(--color-brand-soft);
    color: var(--color-brand);
    border-radius: 6px;
    font-size: 0.85rem;
    font-weight: 650;
}
.hero__title {
    margin-bottom: 0.85rem;
}
.hero__subtitle {
    font-size: 1.12rem;
    color: var(--color-ink-muted);
    margin-bottom: 1.25rem;
}
.hero__promises {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem 1.1rem;
    list-style: none;
    padding: 0;
    margin: 1.25rem 0 0;
    color: var(--color-ink-muted);
    font-size: 0.95rem;
}
.hero__promises li {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
}
.hero__promises li::before {
    content: "";
    width: 0.55rem;
    height: 0.55rem;
    border-radius: 50%;
    background: var(--color-accent);
    flex-shrink: 0;
}
.hero__form-panel {
    background: var(--color-surface);
    border: 1px solid var(--color-line);
    border-radius: var(--radius-md);
    padding: 1.5rem 1.35rem;
    box-shadow: var(--shadow-form);
}
.alert {
    padding: 0.75rem 1rem;
    border-radius: var(--radius-sm);
    margin-bottom: 1rem;
    font-size: 0.95rem;
}
.alert--error {
    background: #fef3f2;
    color: var(--color-error);
    border: 1px solid #fecdca;
}

/* Sections */
.section { padding: var(--space-xl) 0; }
.section--alt {
    background: var(--color-surface);
    border-block: 1px solid var(--color-line);
}
.section--tint {
    background: linear-gradient(180deg, var(--color-brand-soft), #f4f7fb);
}
.section-header { margin-bottom: 2rem; }
.section-header--center { text-align: center; max-width: 40rem; margin-left: auto; margin-right: auto; margin-bottom: 2rem; }
.section-label {
    margin: 0 0 0.5rem;
    color: var(--color-accent);
    font-size: 0.88rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}
.section-intro {
    color: var(--color-ink-muted);
    font-size: 1.05rem;
    margin: 0;
}

/* Help topics — Eigen Huis style tiles */
.help-grid {
    display: grid;
    gap: 1rem;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}
.help-tile {
    background: var(--color-surface);
    border: 1px solid var(--color-line);
    border-radius: var(--radius-md);
    padding: 1.25rem 1.2rem;
    text-decoration: none;
    color: inherit;
    transition: border-color var(--transition), box-shadow var(--transition);
}
.help-tile:hover {
    border-color: #b7c9dc;
    box-shadow: 0 8px 24px rgba(11, 79, 138, 0.08);
    text-decoration: none;
}
.help-tile h3 {
    margin: 0 0 0.4rem;
    font-size: 1.05rem;
    color: var(--color-brand);
}
.help-tile p {
    margin: 0;
    font-size: 0.95rem;
    color: var(--color-ink-muted);
}

/* Promises / program */
.promise-grid,
.learn-grid {
    display: grid;
    gap: 0.85rem;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}
.promise-item,
.learn-card {
    background: var(--color-surface);
    border: 1px solid var(--color-line);
    border-radius: var(--radius-md);
    padding: 1.15rem 1.2rem;
}
.section--alt .promise-item,
.section--alt .learn-card {
    background: var(--color-bg);
}
.promise-item__num {
    display: block;
    font-family: var(--font-display);
    font-weight: 700;
    color: var(--color-accent);
    font-size: 0.95rem;
    margin-bottom: 0.35rem;
}
.promise-item__text {
    margin: 0;
    font-weight: 600;
    color: var(--color-ink);
}
.learn-card__day {
    display: inline-block;
    margin-bottom: 0.45rem;
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--color-brand);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}
.learn-card p {
    margin: 0;
    color: var(--color-ink-muted);
    font-size: 0.98rem;
}

.check-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    gap: 0.75rem;
}
.check-list li {
    position: relative;
    padding: 0.85rem 1rem 0.85rem 2.6rem;
    background: var(--color-surface);
    border: 1px solid var(--color-line);
    border-radius: var(--radius-sm);
}
.check-list li::before {
    content: "✓";
    position: absolute;
    left: 0.9rem;
    top: 0.85rem;
    color: var(--color-accent);
    font-weight: 700;
}

/* Partners strip */
.partners {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem 1.5rem;
    align-items: center;
    justify-content: center;
    margin-top: 1.5rem;
    color: var(--color-ink-muted);
    font-size: 0.95rem;
}
.partners strong { color: var(--color-ink); }

/* FAQ */
.faq { display: grid; gap: 0.65rem; }
.faq__item {
    background: var(--color-bg);
    border: 1px solid var(--color-line);
    border-radius: var(--radius-sm);
    padding: 0.15rem 0;
}
.faq__question {
    cursor: pointer;
    list-style: none;
    padding: 0.95rem 1.15rem;
    font-weight: 650;
    font-family: var(--font-display);
}
.faq__question::-webkit-details-marker { display: none; }
.faq__answer {
    padding: 0 1.15rem 1.05rem;
    color: var(--color-ink-muted);
}
.faq__answer p { margin: 0; }

/* CTA final */
.cta-final {
    background:
        linear-gradient(135deg, rgba(11, 79, 138, 0.06), rgba(0, 163, 122, 0.08)),
        var(--color-surface);
    border-top: 1px solid var(--color-line);
}

/* Signup form */
.signup-form-wrap__title {
    font-size: 1.25rem;
    margin: 0 0 0.25rem;
}
.signup-form-wrap__subtitle {
    margin: 0 0 1.1rem;
    color: var(--color-ink-muted);
    font-size: 0.95rem;
}
.form-group { margin-bottom: 0.85rem; }
.form-group label {
    display: block;
    margin-bottom: 0.3rem;
    font-size: 0.9rem;
    font-weight: 650;
}
.form-group input {
    width: 100%;
    padding: 0.75rem 0.85rem;
    border: 1px solid var(--color-line);
    border-radius: var(--radius-sm);
    font: inherit;
    background: #fff;
    color: var(--color-ink);
}
.form-group input:focus {
    outline: 2px solid rgba(0, 163, 122, 0.35);
    border-color: var(--color-accent);
}
.hp-field {
    position: absolute !important;
    left: -9999px !important;
    opacity: 0 !important;
    height: 0 !important;
    width: 0 !important;
}
.form-message {
    margin: 0.75rem 0 0;
    font-size: 0.92rem;
}
.form-message.is-error { color: var(--color-error); }
.form-message.is-success { color: var(--color-success); }
.form-trust,
.form-privacy {
    margin: 0.75rem 0 0;
    font-size: 0.82rem;
    color: var(--color-ink-muted);
}

/* Footer */
.site-footer {
    border-top: 1px solid var(--color-line);
    background: var(--color-surface);
    padding: 1.5rem 0;
    color: var(--color-ink-muted);
    font-size: 0.92rem;
}
.site-footer__inner {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem 1.5rem;
    justify-content: space-between;
    align-items: center;
}
.site-footer a { text-decoration: none; color: var(--color-brand); }
.site-footer a:hover { text-decoration: underline; }
.site-footer p { margin: 0; }

@media (max-width: 640px) {
    .hero__promises { flex-direction: column; gap: 0.45rem; }
}