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

:root {
    --nav-height: 64px;
    --nav-bg: #0f172a;
    --nav-text: #f8fafc;
    --nav-accent: #38bdf8;
    --body-bg: #f5f7fa;
    --body-text: #0f172a;
    --container-width: 1100px;
    --page-gutter: clamp(1.25rem, 3vw, 2rem);
    --content-width: calc(var(--container-width) - 2 * var(--page-gutter));
}

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

body {
    margin: 0;
    font-family: 'Inter', 'Segoe UI', sans-serif;
    line-height: 1.6;
    background: var(--body-bg);
    color: var(--body-text);
    padding-top: var(--nav-height);
    scroll-padding-top: calc(var(--nav-height) + 1rem);
    min-height: 100vh;
    min-height: 100svh;
    display: flex;
    flex-direction: column;
}

main { flex: 1; min-width: 0; }
button { font: inherit; }

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

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

a:hover,
a:focus-visible {
    text-decoration: none;
}

.container {
    width: min(100%, var(--container-width));
    margin: 0 auto;
    padding: 0 var(--page-gutter);
}

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: var(--nav-bg);
    color: var(--nav-text);
    box-shadow: 0 1.75rem 3rem -2.5rem rgba(15, 23, 42, 0.9);
}

.navbar-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    height: var(--nav-height);
    margin: 0 auto;
    padding: 0 var(--page-gutter);
    width: min(100%, var(--container-width));
}

.logo a {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 600;
    font-size: 1.05rem;
    letter-spacing: 0.04em;
    color: var(--nav-text);
}

.logo-pill {
    width: 80px;
    height: 30px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.logo-pill-svg {
    width: 100%;
    height: 100%;
    display: block;
}

.hamburger {
    display: none;
    border: 0;
    background: transparent;
    padding: 0.5rem;
    cursor: pointer;
    color: inherit;
    min-width: 44px;
    min-height: 44px;
}

.hamburger:focus-visible {
    outline: 2px solid var(--nav-accent);
    outline-offset: 4px;
}

.hamburger .bar {
    width: 1.5rem;
    height: 0.125rem;
    background: currentColor;
    border-radius: 999px;
    transition: transform 0.3s ease, opacity 0.3s ease;
}

.hamburger .bar + .bar {
    margin-top: 0.3rem;
}

.hamburger.is-open .bar:nth-child(1) {
    transform: translateY(0.425rem) rotate(45deg);
}

.hamburger.is-open .bar:nth-child(2) {
    opacity: 0;
}

.hamburger.is-open .bar:nth-child(3) {
    transform: translateY(-0.425rem) rotate(-45deg);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-links a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.35rem 0.7rem;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--nav-text);
    border-radius: 999px;
    transition: background 0.2s ease, color 0.2s ease;
    min-height: 44px;
}

.nav-links a:hover,
.nav-links a:focus-visible {
    background: rgba(148, 163, 184, 0.22);
    color: var(--nav-text);
    outline: none;
}

.nav-links a.highlight {
    background: var(--nav-accent);
    color: #082f49;
    font-weight: 600;
}

.nav-links a.highlight:hover,
.nav-links a.highlight:focus-visible {
    background: #0ea5e9;
    color: #082f49;
}

@media (max-width: 1050px) {
    .hamburger {
        display: inline-flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
    }

    .nav-links {
        position: absolute;
        top: var(--nav-height);
        right: 0;
        left: 0;
        flex-direction: column;
        align-items: stretch;
        background: var(--nav-bg);
        padding: 1rem var(--page-gutter) 1.5rem;
        gap: 0.5rem;
        opacity: 0;
        visibility: hidden;
        max-height: calc(100dvh - var(--nav-height));
        overflow-y: auto;
        transition: opacity 0.15s ease, visibility 0.15s ease;
    }

    .nav-links.is-open {
        opacity: 1;
        visibility: visible;
    }

    .nav-links a {
        width: 100%;
    }
}

.footer {
    margin: 4rem auto 0;
    padding: 2rem 1.5rem;
    text-align: center;
    background: #111827;
    color: #e2e8f0;
    border-radius: 1rem 1rem 0 0;
    width: min(100%, var(--container-width));
}

.footer a {
    color: #e2e8f0;
}

.footer a:hover,
.footer a:focus-visible {
    color: #f8fafc;
}

/* Shared calls to action, including every Refua subpage. */
.cta-button {
    display: inline-flex;
    padding: 0.875rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 8px;
    transition: all 0.2s ease;
    text-decoration: none;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    max-width: 100%;
    text-align: center;
}

.cta-button.primary {
    background: #38bdf8;
    color: #082f49;
}

.cta-button.primary:hover {
    background: #0ea5e9;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(56, 189, 248, 0.35);
}

.cta-button.secondary {
    background: #0f172a;
    color: #f8fafc;
}

.cta-button.secondary:hover {
    background: #1e293b;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(15, 23, 42, 0.35);
}


@media (max-width: 600px) {
    .cta-button { width: 100%; max-width: 320px; margin-inline: auto; }
}