/*
 * SSB Main — assets/css/theme.css
 *
 * Design tokens and base overrides.
 * Step 2 will populate these variables with values from the design files.
 * ─────────────────────────────────────────────────────────────────────── */

/* ── Design Tokens ──────────────────────────────────────────────────── */
:root {

    /* Colors — replace with brand palette in Step 2 */
    --ssb-color-primary:        #000000;
    --ssb-color-primary-hover:  #222222;
    --ssb-color-secondary:      #ffffff;
    --ssb-color-accent:         #000000;
    --ssb-color-bg:             #ffffff;
    --ssb-color-bg-alt:         #f5f5f5;
    --ssb-color-text:           #111111;
    --ssb-color-text-muted:     #666666;
    --ssb-color-border:         #e0e0e0;

    /* Typography — replace with brand fonts in Step 2 */
    --ssb-font-heading:         'Georgia', serif;
    --ssb-font-body:            'Helvetica Neue', Arial, sans-serif;
    --ssb-font-size-base:       1rem;
    --ssb-line-height-base:     1.6;

    /* Spacing */
    --ssb-spacing-xs:   0.25rem;
    --ssb-spacing-sm:   0.5rem;
    --ssb-spacing-md:   1rem;
    --ssb-spacing-lg:   2rem;
    --ssb-spacing-xl:   4rem;
    --ssb-spacing-2xl:  6rem;

    /* Layout */
    --ssb-max-width:        1280px;
    --ssb-header-height:    80px;  /* adjust in Step 2 to match design */

    /* Transitions */
    --ssb-transition-fast:   150ms ease;
    --ssb-transition-base:   300ms ease;
    --ssb-transition-slow:   500ms ease;

    /* Shadows */
    --ssb-shadow-sm:    0 1px 3px rgba(0,0,0,0.08);
    --ssb-shadow-md:    0 4px 12px rgba(0,0,0,0.12);
    --ssb-shadow-lg:    0 8px 24px rgba(0,0,0,0.16);

    /* Border radius */
    --ssb-radius-sm:    4px;
    --ssb-radius-md:    8px;
    --ssb-radius-lg:    16px;
}


/* ── Base Reset / Global ────────────────────────────────────────────── */
*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    scroll-behavior: smooth;
}

body {
    font-family: var(--ssb-font-body);
    font-size: var(--ssb-font-size-base);
    line-height: var(--ssb-line-height-base);
    color: var(--ssb-color-text);
    background-color: var(--ssb-color-bg);
    margin: 0;
    padding: 0;
}

img,
video {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    color: inherit;
    text-decoration: none;
    transition: color var(--ssb-transition-fast);
}

a:hover {
    color: var(--ssb-color-primary-hover);
}


/* ── Layout Shell ───────────────────────────────────────────────────── */
#page-wrapper {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

#content-wrapper {
    flex: 1;
}


/* ── Site Header ────────────────────────────────────────────────────── */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background-color: var(--ssb-color-bg);
    height: var(--ssb-header-height);
    border-bottom: 1px solid var(--ssb-color-border);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.site-branding a,
.site-branding img {
    display: block;
}


/* ── Primary Nav — shell only; Step 2 adds drawer/off-canvas ───────── */
.primary-nav .nav-list {
    display: flex;
    align-items: center;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: var(--ssb-spacing-lg);
}

.nav-item {
    position: relative;
}

.nav-link {
    display: inline-flex;
    align-items: center;
    gap: var(--ssb-spacing-xs);
    font-family: var(--ssb-font-body);
    font-size: var(--ssb-font-size-base);
    font-weight: 500;
    color: var(--ssb-color-text);
    cursor: pointer;
    transition: color var(--ssb-transition-fast);
}

.nav-link:hover,
.nav-item.is-active > .nav-link {
    color: var(--ssb-color-primary);
}

/* Drawer sub-menus — hidden until Step 2 wires them up */
.nav-drawer {
    display: none;
    list-style: none;
    margin: 0;
    padding: 0;
}


/* ── Mobile Toggle — hidden on desktop ──────────────────────────────── */
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--ssb-spacing-sm);
}

.nav-toggle__bar {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--ssb-color-text);
    transition: transform var(--ssb-transition-fast), opacity var(--ssb-transition-fast);
}

@media ( max-width: 991.98px ) {
    .primary-nav {
        display: none; /* replaced by off-canvas in Step 2 */
    }
    .nav-toggle {
        display: flex;
    }
}


/* ── Site Footer ────────────────────────────────────────────────────── */
.site-footer {
    background-color: var(--ssb-color-bg-alt);
    border-top: 1px solid var(--ssb-color-border);
    padding: var(--ssb-spacing-xl) 0 var(--ssb-spacing-lg);
}

.footer-nav-list {
    display: flex;
    flex-wrap: wrap;
    gap: var(--ssb-spacing-md);
    list-style: none;
    margin: 0;
    padding: 0;
}

.footer-credits {
    margin-top: var(--ssb-spacing-lg);
    padding-top: var(--ssb-spacing-md);
    border-top: 1px solid var(--ssb-color-border);
    font-size: 0.875rem;
    color: var(--ssb-color-text-muted);
}


/* ── Utility ────────────────────────────────────────────────────────── */
.screen-reader-text {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}