/* ==========================================================================
   BespokeLMS Marketing Site — Component Styles
   Reusable UI components. All values use tokens from tokens.css.
   ========================================================================== */

/* ── Buttons ────────────────────────────────────────────────────────────── */
/*
   Variants  : btn--primary | btn--secondary | btn--teal | btn--ghost | btn--danger
   Sizes     : btn--sm | (default = md) | btn--lg | btn--xl
   Modifiers : btn--full (full width) | btn--icon (square icon button)
   States    : default → hover → active → focus-visible → disabled → loading
*/

/* Base — shared structure */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);

    padding: var(--btn-pad-md);
    font-family: var(--font-family);
    font-size: var(--btn-font-md);
    font-weight: var(--btn-font-weight);
    line-height: 1;
    letter-spacing: var(--btn-letter-spacing);
    white-space: nowrap;
    text-decoration: none;

    border-radius: var(--btn-radius);
    border: var(--btn-border-width) solid transparent;
    cursor: pointer;
    transition: var(--btn-transition);
    user-select: none;
    position: relative;
    overflow: hidden;
}

/* ── Size modifiers ─────────────────────────────────────────────────────── */
.btn--sm {
    padding: var(--btn-pad-sm);
    font-size: var(--btn-font-sm);
}

/* md = default */

.btn--lg {
    padding: var(--btn-pad-lg);
    font-size: var(--btn-font-lg);
}

.btn--xl {
    padding: var(--btn-pad-xl);
    font-size: var(--btn-font-xl);
}

/* ── Layout modifiers ───────────────────────────────────────────────────── */
.btn--full {
    width: 100%;
}

/* Square icon-only button — keeps text visually hidden */
.btn--icon {
    padding: 11px;
    width: 42px;
    height: 42px;
    flex-shrink: 0;
}

.btn--icon.btn--sm {
    width: 32px;
    height: 32px;
    padding: 7px;
}

.btn--icon.btn--lg {
    width: 52px;
    height: 52px;
    padding: 14px;
}


/* ════════════════════════════════════════════════════════════════════════════
   VARIANT: PRIMARY
   Charcoal fill, white text — the main CTA button
   ═══════════════════════════════════════════════════════════════════════════ */
.btn--primary {
    background-color: var(--btn-primary-bg);
    color: var(--btn-primary-fg);
    border-color: var(--btn-primary-border);
}

.btn--primary:hover {
    background-color: var(--btn-primary-bg-hover);
    border-color: var(--btn-primary-border-hover);
    color: var(--btn-primary-fg);
    box-shadow: var(--btn-primary-shadow-hover);
    transform: var(--btn-lift-hover);
    opacity: 1;
}

.btn--primary:active {
    background-color: var(--btn-primary-bg-active);
    box-shadow: var(--btn-primary-shadow-active);
    transform: var(--btn-lift-active);
}

.btn--primary:focus-visible {
    outline: none;
    box-shadow: var(--btn-primary-focus-ring);
}


/* ════════════════════════════════════════════════════════════════════════════
   VARIANT: SECONDARY
   White fill, outlined border — supporting action
   ═══════════════════════════════════════════════════════════════════════════ */
.btn--secondary {
    background-color: var(--btn-secondary-bg);
    color: var(--btn-secondary-fg);
    border-color: var(--btn-secondary-border);
}

.btn--secondary:hover {
    background-color: var(--btn-secondary-bg-hover);
    border-color: var(--btn-secondary-border-hover);
    color: var(--btn-secondary-fg);
    box-shadow: var(--btn-secondary-shadow-hover);
    transform: var(--btn-lift-hover);
    opacity: 1;
}

.btn--secondary:active {
    background-color: var(--btn-secondary-bg-active);
    transform: var(--btn-lift-active);
    box-shadow: none;
}

.btn--secondary:focus-visible {
    outline: none;
    box-shadow: var(--btn-secondary-focus-ring);
}


/* ════════════════════════════════════════════════════════════════════════════
   VARIANT: TEAL
   Brand-accent fill — use sparingly for brand moments
   ═══════════════════════════════════════════════════════════════════════════ */
.btn--teal {
    background-color: var(--btn-teal-bg);
    color: var(--btn-teal-fg);
    border-color: var(--btn-teal-border);
}

.btn--teal:hover {
    background-color: var(--btn-teal-bg-hover);
    border-color: var(--btn-teal-border-hover);
    color: var(--btn-teal-fg);
    box-shadow: var(--btn-teal-shadow-hover);
    transform: var(--btn-lift-hover);
    opacity: 1;
}

.btn--teal:active {
    background-color: var(--btn-teal-bg-active);
    transform: var(--btn-lift-active);
    box-shadow: none;
}

.btn--teal:focus-visible {
    outline: none;
    box-shadow: var(--btn-teal-focus-ring);
}


/* ════════════════════════════════════════════════════════════════════════════
   VARIANT: GHOST
   No background or border — text-only, low visual weight
   ═══════════════════════════════════════════════════════════════════════════ */
.btn--ghost {
    background-color: transparent;
    color: var(--btn-ghost-fg);
    border-color: transparent;
}

.btn--ghost:hover {
    background-color: var(--btn-ghost-bg-hover);
    color: var(--btn-ghost-fg);
    transform: var(--btn-lift-hover);
    opacity: 1;
}

.btn--ghost:active {
    background-color: var(--btn-ghost-bg-active);
    transform: var(--btn-lift-active);
}

.btn--ghost:focus-visible {
    outline: none;
    box-shadow: var(--btn-ghost-focus-ring);
}

/* Muted ghost — for secondary nav links etc. */
.btn--ghost-muted {
    background-color: transparent;
    color: var(--btn-ghost-fg-muted);
    border-color: transparent;
}

.btn--ghost-muted:hover {
    color: var(--btn-ghost-fg);
    background-color: var(--btn-ghost-bg-hover);
    transform: var(--btn-lift-hover);
    opacity: 1;
}

.btn--ghost-muted:focus-visible {
    outline: none;
    box-shadow: var(--btn-ghost-focus-ring);
}


/* ════════════════════════════════════════════════════════════════════════════
   VARIANT: DANGER
   Red fill — destructive or irreversible actions only
   ═══════════════════════════════════════════════════════════════════════════ */
.btn--danger {
    background-color: var(--btn-danger-bg);
    color: var(--btn-danger-fg);
    border-color: var(--btn-danger-border);
}

.btn--danger:hover {
    background-color: var(--btn-danger-bg-hover);
    border-color: var(--btn-danger-border-hover);
    color: var(--btn-danger-fg);
    box-shadow: var(--btn-danger-shadow-hover);
    transform: var(--btn-lift-hover);
    opacity: 1;
}

.btn--danger:active {
    background-color: var(--btn-danger-bg-active);
    transform: var(--btn-lift-active);
    box-shadow: none;
}

.btn--danger:focus-visible {
    outline: none;
    box-shadow: var(--btn-danger-focus-ring);
}


/* ════════════════════════════════════════════════════════════════════════════
   STATE: DISABLED
   Applies to all variants
   ═══════════════════════════════════════════════════════════════════════════ */
.btn:disabled,
.btn[aria-disabled="true"] {
    opacity: 0.4;
    cursor: not-allowed;
    pointer-events: none;
    transform: none !important;
    box-shadow: none !important;
}


/* ════════════════════════════════════════════════════════════════════════════
   STATE: LOADING
   Add .is-loading to show a spinner and hide the label
   ═══════════════════════════════════════════════════════════════════════════ */
.btn.is-loading {
    cursor: wait;
    pointer-events: none;
    color: transparent;
    /* hide label text */
}

/* Spinner via ::after pseudo-element */
.btn.is-loading::after {
    content: '';
    position: absolute;
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255, 255, 255, 0.35);
    border-top-color: rgba(255, 255, 255, 0.9);
    border-radius: 50%;
    animation: btn-spin 0.55s linear infinite;
}

/* Adjust spinner colour for light-bg variants */
.btn--secondary.is-loading::after,
.btn--ghost.is-loading::after,
.btn--ghost-muted.is-loading::after {
    border-color: rgba(0, 0, 0, 0.15);
    border-top-color: rgba(0, 0, 0, 0.7);
}

@keyframes btn-spin {
    to {
        transform: rotate(360deg);
    }
}


/* ════════════════════════════════════════════════════════════════════════════
   MODIFIER: GLOW
   Adds a teal radial glow beneath a button — use on primary CTAs in hero /
   CTA sections. Wrap the button in a span.btn-glow or add class to a wrapping
   element: <span class="btn--glow"><button class="btn btn--primary">…</button></span>
   ═══════════════════════════════════════════════════════════════════════════ */
/* .btn--glow — the glow lives entirely on ::after; position: relative comes from .btn */
.btn--glow::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 15%;
    right: 15%;
    height: 20px;
    background: radial-gradient(ellipse, rgba(26, 140, 140, 0.35) 0%, transparent 70%);
    filter: blur(8px);
    pointer-events: none;
}

/* ── Navigation ─────────────────────────────────────────────────────────── */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background-color: transparent;
    border-bottom: 1px solid transparent;
    transition:
        background-color 0.3s ease,
        border-color 0.3s ease,
        transform 0.35s cubic-bezier(0.4, 0, 0.2, 1),
        backdrop-filter 0.3s ease;
}

/* After the user scrolls past the hero — gains frosted glass */
.site-header.is-scrolled {
    background-color: rgba(244, 244, 245, 0.85);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom-color: rgba(0, 0, 0, 0.07);
}

/* Hide when scrolling down, reveal when scrolling up */
.site-header.is-hidden {
    transform: translateY(-100%);
}

/* Burger menu open — header floats above the page */
.site-header.nav-open {
    background-color: #ffffff;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12);
    border-bottom-color: transparent;
}

/* Compensate for the fixed header so sections don't hide under it */
body {
    padding-top: 64px;
}

.site-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

/* Logo — icon mark + wordmark side by side */
.site-nav__logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: var(--font-size-h4);
    font-weight: var(--font-weight-bold);
    color: var(--color-ink);
    text-decoration: none;
    letter-spacing: -0.03em;
}

.site-nav__logo:hover {
    opacity: 1;
}

.site-nav__logo-mark {
    display: flex;
    align-items: center;
    color: var(--color-teal);
    flex-shrink: 0;
}

.site-nav__logo span {
    color: var(--color-teal);
}

.site-nav__links {
    display: flex;
    align-items: center;
    gap: var(--space-8);
}

.site-nav__link {
    font-size: 0.9375rem;
    font-weight: var(--font-weight-medium);
    color: #555;
    text-decoration: none;
    transition: color var(--transition-base);
}

.site-nav__link:hover {
    color: var(--color-ink);
    opacity: 1;
}

.site-nav__actions {
    display: flex;
    align-items: center;
    gap: var(--space-5);
}

/* ── Cards ──────────────────────────────────────────────────────────────── */
.card {
    background-color: var(--color-white);
    border: 1px solid var(--color-surface-2);
    border-radius: var(--radius-xl);
    padding: var(--space-8);
    box-shadow: var(--shadow-card);
    transition: box-shadow var(--transition-slow), transform var(--transition-slow);
}

.card:hover {
    box-shadow: var(--shadow-raised);
    transform: translateY(-3px);
}

.card__icon {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--color-surface);
    border-radius: var(--radius-lg);
    color: var(--color-ink);
    margin-bottom: var(--space-4);
    border: 1px solid var(--color-surface-2);
}

.card__title {
    font-size: var(--font-size-h4);
    font-weight: var(--font-weight-semibold);
    color: var(--color-ink);
    margin-bottom: var(--space-2);
}

.card__body {
    font-size: var(--font-size-sm);
    color: var(--color-slate);
    line-height: var(--line-height-relaxed);
}

/* ── Pill Badge ─────────────────────────────────────────────────────────── */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px var(--space-4);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    border-radius: var(--radius-full);
    background-color: var(--color-white);
    border: 1px solid var(--color-surface-2);
    color: #555;
}

.badge__dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background-color: var(--color-teal);
    flex-shrink: 0;
}

/* ── Section Defaults ───────────────────────────────────────────────────── */
.section {
    padding-block: var(--space-24);
}

.section--white {
    background-color: var(--color-white);
}

.section__header {
    max-width: 600px;
    margin-bottom: var(--space-16);
}

.section__header--center {
    text-align: center;
    margin-inline: auto;
}

.section__eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 5px var(--space-4);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    border-radius: var(--radius-full);
    background-color: var(--color-white);
    border: 1px solid var(--color-surface-2);
    color: #555;
    margin-bottom: var(--space-5);
}

.section__title {
    font-size: var(--font-size-h2);
    margin-bottom: var(--space-4);
    color: var(--color-ink);
}

.section__lead {
    font-size: var(--font-size-base);
    color: var(--color-slate);
    line-height: var(--line-height-relaxed);
}

/* ── Grid Layouts ───────────────────────────────────────────────────────── */
.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-5);
}

.grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-8);
    align-items: center;
}

@media (max-width: 1024px) {
    .grid-3 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 640px) {

    .grid-3,
    .grid-2 {
        grid-template-columns: 1fr;
    }
}

/* ── Footer ─────────────────────────────────────────────────────────────── */
.site-footer {
    background-color: var(--color-surface);
    border-top: 1px solid var(--color-surface-2);
    color: var(--color-slate);
    padding-block: var(--space-16);
}

.site-footer__grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--space-12);
    margin-bottom: var(--space-12);
}

.site-footer .site-nav__logo {
    font-size: var(--font-size-base);
}

.site-footer__brand p {
    color: var(--color-slate);
    font-size: var(--font-size-sm);
    margin-top: var(--space-3);
    max-width: 260px;
    opacity: 0.75;
}

.site-footer__heading {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--color-ink);
    margin-bottom: var(--space-4);
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.site-footer__links {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.site-footer__link {
    font-size: var(--font-size-sm);
    color: var(--color-slate);
    text-decoration: none;
    opacity: 0.7;
    transition: opacity var(--transition-base);
}

.site-footer__link:hover {
    opacity: 1;
    color: var(--color-ink);
}

.site-footer__bottom {
    border-top: 1px solid var(--color-surface-2);
    padding-top: var(--space-6);
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: var(--font-size-sm);
    color: var(--color-slate);
    opacity: 0.6;
}

@media (max-width: 768px) {
    .site-footer__grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 480px) {
    .site-footer__grid {
        grid-template-columns: 1fr;
    }

    .site-footer__bottom {
        flex-direction: column;
        gap: var(--space-3);
        text-align: center;
    }
}

/* ==========================================================================
   Mobile / Responsive Navigation
   ========================================================================== */

/* Hide mobile-only elements on desktop */
.site-nav__mobile-actions {
    display: none;
}

.site-nav__mobile-menu {
    display: none;
}

@media (max-width: 768px) {

    /* ── Hide desktop-only elements ─────────────────────────────────────────── */
    .site-nav__links {
        display: none;
    }

    .site-nav__actions {
        display: none;
    }

    /* ── Show mobile controls ────────────────────────────────────────────────── */
    .site-nav__mobile-actions {
        display: flex;
        align-items: center;
        gap: var(--space-4);
        margin-left: auto;
    }

    /* ── Hamburger button ────────────────────────────────────────────────────── */
    .site-nav__toggle {
        background: none;
        border: none;
        padding: 6px;
        cursor: pointer;
        display: flex;
        align-items: center;
        justify-content: center;
        color: var(--color-ink);
        border-radius: var(--radius-md);
        transition: background var(--transition-base);
    }

    .site-nav__toggle:hover {
        background: var(--color-surface-2);
    }

    /* Three bars */
    .site-nav__burger {
        display: flex;
        flex-direction: column;
        gap: 5px;
        width: 22px;
    }

    .site-nav__burger span {
        display: block;
        height: 2px;
        background: currentColor;
        border-radius: 2px;
        transition: transform 0.3s ease, opacity 0.3s ease, width 0.3s ease;
        transform-origin: center;
    }

    /* Morph to ✕ when open */
    .site-header.nav-open .site-nav__burger span:nth-child(1) {
        transform: translateY(7px) rotate(45deg);
    }

    .site-header.nav-open .site-nav__burger span:nth-child(2) {
        opacity: 0;
        transform: scaleX(0);
    }

    .site-header.nav-open .site-nav__burger span:nth-child(3) {
        transform: translateY(-7px) rotate(-45deg);
    }

    /* ── Mobile menu panel ───────────────────────────────────────────────────── */
    .site-nav__mobile-menu {
        display: block;
        overflow: hidden;
        max-height: 0;
        transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        background: #ffffff;
        border: 1px solid var(--color-surface-2);
        border-radius: var(--radius-lg);
        box-shadow: var(--shadow-float);
        margin: var(--space-2) var(--space-3) 0;
        padding-inline: var(--space-4);
        padding-bottom: var(--space-4);
    }

    .site-header.nav-open .site-nav__mobile-menu {
        max-height: 400px;
    }

    .site-nav__mobile-menu ul {
        list-style: none;
        padding: var(--space-4) 0 var(--space-2);
        margin: 0;
    }

    .site-nav__mobile-link {
        display: block;
        padding: var(--space-3) var(--space-2);
        font-size: 1.05rem;
        font-weight: var(--font-weight-medium);
        color: var(--color-ink);
        text-decoration: none;
        opacity: 0;
        transform: translateY(-8px);
        transition: opacity 0.25s ease, transform 0.25s ease, color 0.15s ease;
    }

    .site-nav__mobile-link:hover {
        color: var(--color-teal);
    }

    .site-header.nav-open .site-nav__mobile-link {
        opacity: 1;
        transform: translateY(0);
    }

    .site-nav__mobile-menu li:nth-child(1) .site-nav__mobile-link {
        transition-delay: 0.05s;
    }

    .site-nav__mobile-menu li:nth-child(2) .site-nav__mobile-link {
        transition-delay: 0.10s;
    }

    .site-nav__mobile-menu li:nth-child(3) .site-nav__mobile-link {
        transition-delay: 0.15s;
    }

    .site-nav__mobile-menu li:nth-child(4) .site-nav__mobile-link {
        transition-delay: 0.20s;
    }

    .site-nav__mobile-cta {
        display: block;
        margin: var(--space-2) 0 0;
        text-align: center;
        opacity: 0;
        transform: translateY(-6px);
        transition: opacity 0.25s ease 0.25s, transform 0.25s ease 0.25s;
    }

    .site-header.nav-open .site-nav__mobile-cta {
        opacity: 1;
        transform: translateY(0);
    }
}