/**
 * Random Canada Number Generator — global styles
 * Mobile-first, CLS-aware ad slots, accessible focus
 */

:root {
    --color-primary: #2563eb;
    --color-primary-hover: #1d4ed8;
    --color-secondary: #1e293b;
    --color-accent: #f59e0b;
    --color-bg: #f8fafc;
    --color-surface: #ffffff;
    --color-text: #0f172a;
    --color-muted: #64748b;
    --color-border: #e2e8f0;
    --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.06);
    --shadow-md: 0 4px 14px rgba(15, 23, 42, 0.08);
    --radius: 12px;
    --header-h: 64px;
    --font: "Inter", system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
    --transition: 0.2s ease;
    /* Nav drawer / tablet-mobile breakpoint (must match assets/js/nav.js) */
    --nav-compact-max: 899px;
}

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

html {
    scroll-behavior: smooth;
}

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

body {
    margin: 0;
    font-family: var(--font);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-text);
    background: var(--color-bg);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

body.site-nav-open {
    overflow: hidden;
}

.skip-link {
    position: absolute;
    left: -9999px;
    top: auto;
    width: 1px;
    height: 1px;
    overflow: hidden;
    z-index: 1000;
    padding: 0.75rem 1rem;
    background: var(--color-primary);
    color: #fff;
    font-weight: 600;
    border-radius: var(--radius);
}

.skip-link:focus {
    left: 1rem;
    top: 1rem;
    width: auto;
    height: auto;
    outline: 3px solid var(--color-accent);
    outline-offset: 2px;
}

/* --- Sticky header --- */
.site-header {
    position: sticky;
    top: 0;
    z-index: 200;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-sm);
    min-height: var(--header-h);
}

.site-header__inner {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0.75rem 1.25rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.site-logo {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
    color: var(--color-secondary);
    font-weight: 700;
    font-size: 1.125rem;
    letter-spacing: -0.02em;
    transition: color var(--transition), transform var(--transition);
}

.site-logo:hover .site-logo__img {
    opacity: 0.92;
}

.site-logo:focus-visible {
    outline: 3px solid var(--color-accent);
    outline-offset: 4px;
    border-radius: 8px;
}

.site-logo__img {
    display: block;
    height: clamp(2rem, 5.5vw, 3rem);
    width: auto;
    max-width: min(280px, 72vw);
    object-fit: contain;
    object-position: left center;
}

/* Hamburger (shown tablet / mobile only) */
.site-nav-toggle {
    display: none;
    align-items: center;
    justify-content: center;
    width: 2.75rem;
    height: 2.75rem;
    padding: 0;
    margin: 0;
    border: 2px solid var(--color-border);
    border-radius: 10px;
    background: var(--color-surface);
    cursor: pointer;
    transition: border-color var(--transition), background var(--transition), box-shadow var(--transition);
}

.site-nav-toggle:hover {
    border-color: #cbd5e1;
    background: #f8fafc;
}

.site-nav-toggle:focus-visible {
    outline: 3px solid var(--color-accent);
    outline-offset: 2px;
}

.site-nav-toggle__bars {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 1.25rem;
}

.site-nav-toggle__bar {
    display: block;
    height: 2px;
    border-radius: 1px;
    background: var(--color-secondary);
    transition: transform 0.25s ease, opacity 0.2s ease;
    transform-origin: center;
}

.site-nav-toggle.is-open .site-nav-toggle__bar:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.site-nav-toggle.is-open .site-nav-toggle__bar:nth-child(2) {
    opacity: 0;
}

.site-nav-toggle.is-open .site-nav-toggle__bar:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

.site-nav-backdrop {
    display: block;
    position: fixed;
    inset: 0;
    z-index: 150;
    background: rgba(15, 23, 42, 0.45);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.25s ease, visibility 0.25s ease;
}

.site-nav-backdrop.is-visible {
    opacity: 1;
    visibility: visible;
}

.site-nav__list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 0.35rem 2rem;
    justify-content: flex-end;
}

.site-nav a {
    color: var(--color-muted);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9375rem;
    padding: 0.35rem 0;
    border-bottom: 2px solid transparent;
    transition: color var(--transition), border-color var(--transition);
}

.site-nav a:hover {
    color: var(--color-primary);
}

.site-nav a[aria-current="page"] {
    color: var(--color-primary);
    border-bottom-color: var(--color-accent);
}

.site-nav a:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 4px;
    border-radius: 4px;
}

/* Desktop: horizontal links, hide menu button & backdrop */
@media (min-width: 900px) {
    .site-nav {
        position: static;
        transform: none;
        width: auto;
        max-width: none;
        height: auto;
        margin: 0;
        padding: 0;
        background: transparent;
        border: none;
        box-shadow: none;
        overflow: visible;
    }

    .site-nav-backdrop {
        display: none !important;
    }
}

/* Tablet & mobile: drawer + menu button */
@media (max-width: 899px) {
    .site-nav-toggle {
        display: inline-flex;
        flex-shrink: 0;
        margin-left: auto;
    }

    .site-logo {
        flex-shrink: 0;
    }

    .site-nav {
        position: fixed;
        top: var(--header-h);
        right: 0;
        bottom: 0;
        width: min(18rem, 92vw);
        max-width: 100%;
        margin: 0;
        padding: 1rem 1.25rem 2rem;
        background: var(--color-surface);
        border-left: 1px solid var(--color-border);
        box-shadow: -8px 0 32px rgba(15, 23, 42, 0.12);
        z-index: 160;
        transform: translateX(100%);
        visibility: hidden;
        transition: transform 0.28s ease, visibility 0.28s ease;
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
    }

    .site-nav.is-open {
        transform: translateX(0);
        visibility: visible;
    }

    .site-nav__list {
        flex-direction: column;
        flex-wrap: nowrap;
        gap: 0;
        align-items: stretch;
        justify-content: flex-start;
    }

    .site-nav__list li {
        border-bottom: 1px solid var(--color-border);
    }

    .site-nav__list li:last-child {
        border-bottom: none;
    }

    .site-nav a {
        display: block;
        padding: 1rem 0.35rem;
        font-size: 1rem;
        border-bottom-width: 0;
        border-left: 3px solid transparent;
    }

    .site-nav a:hover {
        border-left-color: rgba(37, 99, 235, 0.35);
        padding-left: 0.75rem;
    }

    .site-nav a[aria-current="page"] {
        border-left-color: var(--color-accent);
        color: var(--color-primary);
        background: rgba(37, 99, 235, 0.06);
        border-radius: 6px;
        padding-left: 0.75rem;
    }
}

/* --- Main layout --- */
main#main {
    flex: 1;
    width: 100%;
    max-width: 1100px;
    margin: 0 auto;
    padding: 1.5rem 1.25rem 3rem;
}

.page-intro {
    margin-bottom: 1.5rem;
    animation: fadeIn 0.45s ease;
}

.page-intro h1 {
    margin: 0 0 0.5rem;
    font-size: clamp(1.65rem, 4vw, 2.25rem);
    line-height: 1.2;
    color: var(--color-secondary);
    letter-spacing: -0.03em;
}

.page-intro .lead {
    margin: 0;
    color: var(--color-muted);
    font-size: 1.0625rem;
}

/* --- Ad placeholders (fixed min-height for CLS) --- */
.ads-placeholder {
    width: 100%;
    min-height: 100px;
    margin: 1rem 0 1.5rem;
    border: 1px dashed var(--color-border);
    border-radius: var(--radius);
    background: linear-gradient(180deg, #f1f5f9 0%, #f8fafc 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-muted);
    font-size: 0.8125rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.ads-placeholder--mid {
    min-height: 250px;
    margin: 2rem 0;
}

/* --- Cards --- */
.card {
    background: var(--color-surface);
    border-radius: var(--radius);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-md);
    padding: 1.35rem 1.5rem;
    margin-bottom: 1.5rem;
    animation: fadeIn 0.5s ease;
}

.card--tool {
    border-top: 4px solid var(--color-primary);
}

.card--tool > h2 {
    margin: 0 0 1rem;
    font-size: 1.2rem;
    color: var(--color-secondary);
    letter-spacing: -0.02em;
}

.tool-controls {
    width: 100%;
}

.tool-controls__row {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-end;
    justify-content: space-between;
    gap: 1rem 1.25rem;
}

.tool-controls__left {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-end;
    gap: 1rem;
    flex: 1 1 auto;
    min-width: min(100%, 280px);
}

/* Keep the quantity select from shrinking in flex layout */
.tool-controls__left .form-field--select {
    flex-shrink: 0;
}

.tool-controls__aside {
    flex: 0 0 auto;
    margin-left: auto;
    display: flex;
    align-items: flex-end;
    justify-content: flex-end;
}

/* Ensure hidden beats .btn { display: inline-flex } */
.tool-controls__aside .btn[hidden],
.btn[hidden] {
    display: none !important;
}

.form-field {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

.form-field label {
    font-weight: 600;
    font-size: 0.875rem;
    color: var(--color-secondary);
}

/* Styled native select — wide enough for label + chevron; icon via background (no overflow) */
.select-wrap {
    display: block;
    min-width: 11.5rem;
    max-width: 16rem;
}

.form-field--select .select-wrap select {
    font-family: inherit;
    font-size: 1rem;
    font-weight: 600;
    line-height: 1.25;
    width: 100%;
    box-sizing: border-box;
    padding: 0.7rem 3.25rem 0.7rem 1.1rem;
    min-height: 2.875rem;
    border-radius: 10px;
    border: 2px solid var(--color-border);
    color: var(--color-text);
    cursor: pointer;
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    /* Chevron inside the field — keeps safe inset from border */
    background-color: var(--color-surface);
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%2364748b' stroke-width='2'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' d='M19 9l-7 7-7-7'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    background-size: 1.125rem 1.125rem;
    transition: border-color var(--transition), box-shadow var(--transition), background-color var(--transition);
}

.form-field--select .select-wrap select::-ms-expand {
    display: none;
}

.form-field--select .select-wrap select:hover {
    border-color: #cbd5e1;
    background-color: #fafafa;
}

.form-field--select .select-wrap select:focus-visible {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.25);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-family: inherit;
    font-weight: 700;
    font-size: 1rem;
    padding: 0.75rem 1.35rem;
    border-radius: 10px;
    border: none;
    cursor: pointer;
    text-decoration: none;
    transition: background var(--transition), transform 0.12s ease, box-shadow var(--transition);
}

.btn:active {
    transform: scale(0.98);
}

.btn--primary {
    background: var(--color-primary);
    color: #fff;
    box-shadow: 0 2px 8px rgba(37, 99, 235, 0.35);
}

.btn--primary:hover {
    background: var(--color-primary-hover);
}

.btn--primary:focus-visible {
    outline: 3px solid var(--color-accent);
    outline-offset: 2px;
}

.btn--secondary {
    background: var(--color-secondary);
    color: #fff;
}

.btn--secondary:hover {
    background: #334155;
}

.btn--ghost {
    background: transparent;
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
}

.btn--ghost:hover {
    background: rgba(37, 99, 235, 0.08);
}

.btn--small {
    font-size: 0.875rem;
    padding: 0.45rem 0.85rem;
}

.status-region {
    margin-top: 0.75rem;
    min-height: 1.25rem;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-secondary);
}

.status-region[aria-live="polite"]:empty {
    min-height: 0;
}

/* --- Results --- */
.results-list {
    list-style: none;
    margin: 1rem 0 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 0.65rem;
}

.result-row {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    padding: 0.85rem 1rem;
    background: #f1f5f9;
    border-radius: 10px;
    border: 1px solid var(--color-border);
    animation: fadeIn 0.35s ease;
}

.result-row code {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--color-secondary);
    letter-spacing: 0.02em;
}

/* --- SEO content --- */
.content-section {
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--color-border);
}

.content-section h2 {
    font-size: 1.35rem;
    color: var(--color-secondary);
    margin: 2rem 0 0.75rem;
    letter-spacing: -0.02em;
}

.content-section h2:first-child {
    margin-top: 0;
}

.content-section h3 {
    font-size: 1.1rem;
    color: var(--color-secondary);
    margin: 1.25rem 0 0.5rem;
}

.content-section p {
    margin: 0 0 1rem;
    color: var(--color-text);
}

.content-section ul {
    margin: 0 0 1rem;
    padding-left: 1.25rem;
    color: var(--color-text);
}

.faq-list {
    margin: 0;
    padding: 0;
    list-style: none;
}

.faq-list li {
    margin-bottom: 1.25rem;
    padding-bottom: 1.25rem;
    border-bottom: 1px solid var(--color-border);
}

.faq-list li:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.faq-list h3 {
    margin: 0 0 0.5rem;
    font-size: 1.05rem;
}

.faq-list p {
    margin: 0;
    color: var(--color-muted);
}

/* --- Inner pages --- */
.page-card h1 {
    margin-top: 0;
    color: var(--color-secondary);
}

.contact-form {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    max-width: 32rem;
}

.contact-form label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.35rem;
    font-size: 0.875rem;
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    max-width: none;
    font-family: inherit;
    font-size: 1rem;
    padding: 0.65rem 0.75rem;
    border: 1px solid var(--color-border);
    border-radius: 8px;
    margin-bottom: 1rem;
    display: block;
}

.contact-form textarea {
    resize: vertical;
    min-height: 8rem;
}

.contact-form button[type="submit"] {
    align-self: flex-start;
    margin-top: 0.25rem;
    margin-bottom: 0;
    position: static;
    float: none;
}

.contact-form input:focus-visible,
.contact-form textarea:focus-visible {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.2);
}

.contact-note {
    font-size: 0.9375rem;
    color: var(--color-muted);
    padding: 0.85rem 1rem;
    background: #f1f5f9;
    border-radius: 8px;
    border-left: 4px solid var(--color-accent);
}

.contact-after {
    margin-top: 1.5rem;
}

/* --- Footer --- */
.site-footer {
    background: var(--color-secondary);
    color: #cbd5e1;
    margin-top: auto;
    padding: 2rem 1.25rem;
    font-size: 0.9375rem;
}

.site-footer__inner {
    max-width: 1100px;
    margin: 0 auto;
}

.site-footer a {
    color: #e2e8f0;
    text-decoration: underline;
    text-underline-offset: 3px;
    font-weight: 600;
}

.site-footer a:hover {
    color: #fff;
}

.site-footer a:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 3px;
}

.site-footer__links {
    list-style: none;
    margin: 1rem 0;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem 1.5rem;
}

.site-footer__copy {
    margin: 0;
    font-size: 0.8125rem;
    color: #94a3b8;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(6px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}