/* Shared service-page polish.
   Loaded after page-local CSS so individual service pages keep their tool logic
   while the shell matches the main ChemAI site. */

:root {
    --primary-color: #10b981;
    --primary-dark: #059669;
    --secondary-color: #f59e0b;
    --accent-blue: #3b82f6;
    --background-primary: #0a192f;
    --background-secondary: #112240;
    --text-primary: #e2e8f0;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --glass-bg: rgba(17, 34, 64, 0.78);
    --glass-border: rgba(148, 163, 184, 0.18);
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

html {
    background: var(--background-primary);
}

body,
body[class] {
    color: var(--text-primary);
    background:
        radial-gradient(circle at 18% 8%, rgba(16, 185, 129, 0.14), transparent 28rem),
        radial-gradient(circle at 88% 22%, rgba(59, 130, 246, 0.12), transparent 30rem),
        linear-gradient(160deg, var(--background-primary) 0%, var(--background-secondary) 100%);
    font-family: var(--font-body);
    min-height: 100vh;
    overflow-x: clip;
}

html.chemai-fullscreen-lock,
body.chemai-fullscreen-lock {
    overflow: hidden !important;
    overscroll-behavior: none;
}

body.chemai-fullscreen-lock {
    position: fixed;
    left: 0;
    right: 0;
    width: 100%;
}

#freeAccessToast {
    display: none !important;
}

header,
body header {
    background: rgba(10, 25, 47, 0.92);
    border-bottom: 1px solid var(--glass-border);
    box-shadow: 0 14px 40px rgba(2, 6, 23, 0.24);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
}

.logo,
.logo-text {
    color: var(--primary-color);
}

.header-controls {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.desktop-nav a,
.mobile-nav a {
    color: var(--text-secondary);
}

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

.hero-card,
.info-card,
.tool-container,
.calculator-card,
.result-card,
.feature-card,
.converter-card,
.content-card,
.input-card,
.output-card {
    background: var(--glass-bg);
    border-color: var(--glass-border);
    box-shadow: 0 24px 60px rgba(2, 6, 23, 0.28);
}

main:has(.iframe-wrapper-container),
main:has([data-viewer-root]) {
    display: flex;
    flex-direction: column;
    gap: 2.75rem;
}

main:has(.iframe-wrapper-container) > section,
main:has([data-viewer-root]) > section {
    flex: 0 0 auto;
}

main:has(.iframe-wrapper-container) > .hero-card,
main:has([data-viewer-root]) > .hero-card,
main:has(.iframe-wrapper-container) > .info-card,
main:has([data-viewer-root]) > .info-card {
    margin-top: 0 !important;
    margin-bottom: 0 !important;
    margin-left: auto !important;
    margin-right: auto !important;
}

.info-card {
    clear: both;
}

.info-card > h2 {
    font-size: clamp(1.5rem, 3vw, 2.35rem) !important;
    line-height: 1.18 !important;
    margin: 0 0 1.5rem !important;
    overflow-wrap: anywhere;
}

.info-card p,
.info-card li {
    line-height: 1.7;
}

.info-card ul,
.info-card ol {
    padding-left: 1.25rem;
}

.action-btn,
.btn,
button {
    border-radius: 0.5rem;
}

/* Shared iframe shell for premium embedded tools.
   These pages carry older inline iframe heights; keep larger embeds in normal
   document flow so the surrounding hero, content, and footer do not collide. */
.iframe-wrapper-container,
[data-viewer-root] {
    width: 100%;
    max-width: 1280px;
    margin-left: auto;
    margin-right: auto;
}

.iframe-wrapper,
.viewer-wrapper {
    position: relative;
    width: 100%;
    max-width: 100%;
    height: clamp(640px, calc(100dvh - 180px), 940px) !important;
    min-height: 0 !important;
    padding-top: 0 !important;
    overflow: hidden;
    contain: layout paint;
}

.iframe-wrapper iframe,
.viewer-wrapper iframe,
.fullscreen-iframe {
    display: block;
    width: 100%;
    height: 100%;
    min-height: 0;
    border: 0;
}

.fullscreen-overlay {
    position: fixed !important;
    inset: 0 !important;
    width: 100%;
    max-width: none;
    height: 100dvh !important;
    max-height: 100dvh;
    overflow: hidden !important;
    overscroll-behavior: none;
    z-index: 2147483000 !important;
}

.fullscreen-overlay.active {
    display: flex;
    flex-direction: column;
}

.fullscreen-content {
    flex: 1 1 auto;
    min-height: 0;
    height: auto;
    overflow: hidden !important;
}

footer,
footer.chemai-footer {
    position: relative;
    margin-top: 4rem;
    padding: 3.5rem 0 1.5rem;
    color: var(--text-secondary);
    background: rgba(10, 25, 47, 0.96);
    border-top: 1px solid var(--glass-border);
}

footer.chemai-footer::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--primary-color), transparent);
}

footer.chemai-footer .footer-content {
    width: min(92%, 1200px);
    margin: 0 auto 2rem;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 2rem;
}

footer.chemai-footer .footer-section h4 {
    margin: 0 0 1rem;
    color: var(--text-primary);
    font-size: 1.05rem;
    font-weight: 700;
}

footer.chemai-footer .footer-section p {
    margin: 0;
    color: var(--text-secondary);
    line-height: 1.7;
}

footer.chemai-footer .footer-section ul {
    margin: 0;
    padding: 0;
    list-style: none;
}

footer.chemai-footer .footer-section li {
    margin-bottom: 0.55rem;
}

footer.chemai-footer a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.2s ease;
}

footer.chemai-footer a:hover {
    color: var(--primary-color);
}

footer.chemai-footer .footer-bottom {
    width: min(92%, 1200px);
    margin: 0 auto;
    padding-top: 1.25rem;
    border-top: 1px solid var(--glass-border);
    color: var(--text-muted);
    text-align: center;
    font-size: 0.9rem;
}

footer.chemai-footer .footer-bottom p {
    margin: 0.35rem 0;
}

@media (max-width: 768px) {
    main:has(.iframe-wrapper-container),
    main:has([data-viewer-root]) {
        gap: 2rem;
    }

    .iframe-wrapper,
    .viewer-wrapper {
        height: clamp(520px, calc(100dvh - 128px), 820px) !important;
        border-radius: 0.75rem;
    }

    .info-card {
        padding: 1.25rem !important;
    }

    footer.chemai-footer {
        padding-top: 2.5rem;
    }

    footer.chemai-footer .footer-content {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
}

@media (max-width: 480px) {
    .iframe-wrapper,
    .viewer-wrapper {
        height: clamp(460px, calc(100dvh - 112px), 720px) !important;
    }
}