/*
 * Serene theme overrides.
 * Loaded after clean-blog.min.css; normal cascade lets these rules win.
 */

:root {
    /* Color: structure and text */
    --color-bg: #ffffff;
    --color-ink: #253c56;            /* headings, dark sections */
    --color-ink-overlay: rgba(37, 60, 86, 0.6); /* #253C5699 image/hero overlay */
    --color-body: #6a6b6d;           /* body and muted text */
    --color-primary: #6f859b;        /* links, secondary headings */

    /* Color: accents */
    --color-accent: #ff9d95;         /* salmon, primary accent and link hover */
    --color-accent-soft: #eec0bf;    /* rose */
    --color-cool: #87c6b5;           /* sage */
    --color-cool-tint: #cde5d9;      /* pale sage wash */
    --color-warm-tint: #fee6de;      /* peach wash */
    --color-warm-wash: rgba(254, 230, 222, 0.21); /* #FEE6DE36 */
    --color-sand: #e4e0dc;           /* neutral accent bg */
    --color-highlight: #facd1f;      /* sun yellow, sparing */

    /* Color: utility */
    --color-hairline: #eaeaea;
    --color-on-dark: #ffffff;

    /* Typography */
    --font-heading: "Raleway", "Helvetica Neue", Arial, sans-serif;
    --font-body: "PT Sans", "Helvetica Neue", Arial, sans-serif;

    --fw-light: 300;
    --fw-normal: 400;
    --fw-medium: 500;
    --fw-semibold: 600;
    --fw-bold: 700;

    --fs-h1: 38px;
    --fs-h2: 32px;
    --fs-h3: 27px;
    --fs-h4: 22px;
    --fs-lead: 20px;
    --fs-body: 18px;
    --fs-small: 15px;
    --fs-button: 15px;

    --lh-heading: 1.4;
    --lh-body: 1.6;

    /* Spacing */
    --space-1: 8px;
    --space-2: 16px;
    --space-3: 20px;   /* default block gap */
    --space-4: 30px;
    --space-5: 40px;
    --space-6: 60px;
    --space-7: 100px;  /* full section */

    /* Layout */
    --container-max: 1140px;
    --content-readable: 760px;

    /* Surface treatment */
    --radius: 0;
    --shadow-card: 0 4px 16px rgba(0, 0, 0, 0.12);
    --hairline: 1px solid var(--color-hairline);

    /* Buttons (link-as-button approximation, see gaps) */
    --btn-bg: rgba(37, 60, 86, 0.6); /* #253C5699 */
    --btn-bg-hover: #253c56;
    --btn-color: #ffffff;
    --btn-padding: 18px 45px;
    --btn-tracking: 2px;
}

/* ==========================================================================
   Base overrides
   ========================================================================== */

body {
    font-family: var(--font-body);
    font-size: var(--fs-body);
    line-height: var(--lh-body);
    color: var(--color-body);
    background: var(--color-bg);
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    color: var(--color-ink);
    line-height: var(--lh-heading);
    font-weight: var(--fw-semibold);
}

h1 { font-size: var(--fs-h1); }
h2 { font-size: var(--fs-h2); }
h3 { font-size: var(--fs-h3); font-weight: var(--fw-medium); }
h4 { font-size: var(--fs-h4); }

p {
    line-height: var(--lh-body);
}

a {
    color: var(--color-primary);
    text-decoration: none;
}

a:hover, a:focus {
    color: var(--color-accent);
    text-decoration: underline;
}

hr {
    border-color: var(--color-hairline);
    margin: var(--space-5) 0;
}

hr.small {
    max-width: 60px;
    margin: var(--space-3) auto;
    border-width: 2px;
    border-color: var(--color-accent);
}

::-moz-selection {
    color: var(--color-on-dark);
    text-shadow: none;
    background: var(--color-accent);
}

::selection {
    color: var(--color-on-dark);
    text-shadow: none;
    background: var(--color-accent);
}

.container {
    max-width: var(--container-max);
}

/* ==========================================================================
   Navbar
   ========================================================================== */

.navbar-custom {
    font-family: var(--font-heading);
}

.navbar-custom .navbar-brand {
    font-weight: var(--fw-semibold);
    letter-spacing: 1px;
}

.navbar-custom .navbar-brand .navbar-logo {
    height: 30px;
    width: auto;
    margin-top: -4px;
    /* white over the transparent navbar (hero / heading-band) */
    filter: brightness(0) invert(1);
    transition: filter 0.2s;
}

.navbar-custom .nav li a {
    font-weight: var(--fw-semibold);
    font-size: 13px;
    letter-spacing: 2px;
}

@media only screen and (min-width: 768px) {
    .navbar-custom .nav li a:hover,
    .navbar-custom .nav li a:focus {
        color: rgba(255, 255, 255, 0.7);
    }
}

@media only screen and (min-width: 1170px) {
    .navbar-custom.is-fixed {
        background-color: rgba(255, 255, 255, 0.95);
        border-bottom: 1px solid var(--color-hairline);
    }

    .navbar-custom.is-fixed .navbar-brand {
        color: var(--color-ink);
    }

    .navbar-custom.is-fixed .navbar-brand .navbar-logo {
        /* full-colour logo once the navbar turns solid on scroll */
        filter: none;
    }

    .navbar-custom.is-fixed .navbar-brand:hover,
    .navbar-custom.is-fixed .navbar-brand:focus {
        color: var(--color-accent);
    }

    .navbar-custom.is-fixed .nav li a {
        color: var(--color-ink);
    }

    .navbar-custom.is-fixed .nav li a:hover,
    .navbar-custom.is-fixed .nav li a:focus {
        color: var(--color-accent);
    }
}

/* ==========================================================================
   Hero (intro-header)
   ========================================================================== */

.intro-header {
    position: relative;
    margin-bottom: var(--space-6);
    background-color: var(--color-ink);
}

.intro-header::before {
    content: "";
    position: absolute;
    inset: 0;
    background: var(--color-ink-overlay);
}

.intro-header .container {
    position: relative;
    z-index: 1;
}

.intro-header .site-heading,
.intro-header .post-heading {
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.intro-header .site-heading {
    min-height: 70vh;
    padding: var(--space-7) 0;
}

.intro-header .post-heading {
    min-height: 45vh;
    padding: var(--space-6) 0;
}

.intro-header h1,
.intro-header .subheading,
.intro-header .meta {
    color: var(--color-on-dark);
}

.intro-header .site-heading h1,
.intro-header .post-heading h1 {
    margin-top: 0;
    font-family: var(--font-heading);
    font-weight: var(--fw-semibold);
    font-size: var(--fs-h1);
    letter-spacing: 1px;
}

.intro-header .site-heading .subheading,
.intro-header .post-heading .subheading {
    font-family: var(--font-heading);
    font-weight: var(--fw-normal);
    font-size: var(--fs-lead);
    color: rgba(255, 255, 255, 0.9);
    margin: var(--space-2) 0 0;
}

.intro-header .post-heading .meta {
    font-family: var(--font-body);
    font-style: normal;
    font-weight: var(--fw-normal);
    font-size: var(--fs-small);
    color: rgba(255, 255, 255, 0.8);
}

/* No-header fallback heading band */
.serene-heading-band {
    background-color: var(--color-ink);
    color: var(--color-on-dark);
    padding: var(--space-7) 0 var(--space-6);
    margin-bottom: var(--space-6);
}

.serene-heading-band h1 {
    margin: 0;
    color: var(--color-on-dark);
    font-size: var(--fs-h1);
    font-weight: var(--fw-semibold);
    letter-spacing: 1px;
}

.serene-heading-band .subheading {
    font-family: var(--font-heading);
    font-weight: var(--fw-normal);
    font-size: var(--fs-lead);
    color: rgba(255, 255, 255, 0.9);
    margin: var(--space-2) 0 0;
}

.serene-heading-band .meta {
    font-family: var(--font-body);
    font-size: var(--fs-small);
    color: rgba(255, 255, 255, 0.8);
}

/* ==========================================================================
   Article listing
   ========================================================================== */

.post-preview > a {
    color: var(--color-ink);
}

.post-preview > a:hover,
.post-preview > a:focus {
    color: var(--color-primary);
}

.post-preview > a > .post-title {
    font-family: var(--font-heading);
    font-size: var(--fs-h2);
    font-weight: var(--fw-semibold);
    color: var(--color-ink);
    margin-top: var(--space-5);
    margin-bottom: var(--space-2);
}

.post-preview > a:hover > .post-title,
.post-preview > a:focus > .post-title {
    color: var(--color-primary);
}

.post-preview > a > .post-subtitle {
    font-family: var(--font-heading);
    font-size: var(--fs-lead);
    font-weight: var(--fw-normal);
    color: var(--color-body);
    margin: 0 0 var(--space-2);
}

.post-preview > .post-meta {
    font-family: var(--font-body);
    font-size: var(--fs-small);
    font-style: normal;
    color: var(--color-primary);
    margin-top: var(--space-2);
}

.post-preview > .post-meta > a {
    color: var(--color-primary);
}

.section-heading {
    font-family: var(--font-heading);
    font-size: var(--fs-h2);
    font-weight: var(--fw-semibold);
    color: var(--color-ink);
    margin-top: var(--space-6);
}

/* ==========================================================================
   Image caption
   ========================================================================== */

.caption {
    font-family: var(--font-body);
    font-size: var(--fs-small);
    font-style: italic;
    color: var(--color-body);
    text-align: center;
    margin-top: var(--space-1);
}

/* ==========================================================================
   Buttons
   ========================================================================== */

.btn {
    font-family: var(--font-heading);
    text-transform: uppercase;
    font-weight: var(--fw-semibold);
    letter-spacing: var(--btn-tracking);
    border-radius: var(--radius);
}

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

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

/* Link styled as button (gaps: CTA approximation) */
.serene-btn {
    display: inline-block;
    font-family: var(--font-heading);
    font-size: var(--fs-button);
    font-weight: var(--fw-semibold);
    text-transform: uppercase;
    letter-spacing: var(--btn-tracking);
    color: var(--btn-color);
    background: var(--btn-bg);
    padding: var(--btn-padding);
    border-radius: var(--radius);
}

.serene-btn:hover,
.serene-btn:focus {
    background: var(--btn-bg-hover);
    color: var(--btn-color);
    text-decoration: none;
}

/* ==========================================================================
   Pagination
   ========================================================================== */

.pager li > a,
.pager li > span {
    font-family: var(--font-heading);
    font-weight: var(--fw-normal);
    font-size: var(--fs-small);
    letter-spacing: 1px;
    padding: var(--space-1) var(--space-2);
    color: var(--color-primary);
    background-color: var(--color-bg);
    border: var(--hairline);
    border-radius: var(--radius);
}

.pager li > a:hover,
.pager li > a:focus {
    color: var(--color-on-dark);
    background-color: var(--color-ink);
    border-color: var(--color-ink);
}

.pager .disabled > a,
.pager .disabled > a:hover,
.pager .disabled > a:focus,
.pager .disabled > span {
    color: var(--color-body);
    background-color: var(--color-bg);
}

/* ==========================================================================
   Footer
   ========================================================================== */

footer {
    padding: var(--space-6) 0;
}

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

footer a:hover {
    color: var(--color-accent);
}

/* ==========================================================================
   Quote (editorial pull quote)
   ========================================================================== */

.serene-quote {
    position: relative;
    text-align: center;
    margin: var(--space-6) auto;
    padding: var(--space-6) var(--space-4);
    border: 0;
    background: var(--color-warm-wash);
    color: var(--color-ink);
    font-style: normal;
}

.serene-quote::before {
    content: "\201C";
    display: block;
    font-family: var(--font-heading);
    font-size: 64px;
    line-height: 1;
    color: var(--color-cool-tint);
    margin-bottom: var(--space-2);
}

.serene-quote-text {
    font-family: var(--font-heading);
    font-size: var(--fs-h3);
    font-weight: var(--fw-normal);
    line-height: var(--lh-heading);
    color: var(--color-ink);
    margin: 0;
}

.serene-quote-by {
    font-family: var(--font-body);
    font-size: var(--fs-small);
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--color-primary);
    margin: var(--space-3) 0 0;
}

.serene-quote-by::before {
    content: "";
    display: inline-block;
    width: 24px;
    height: 2px;
    margin-right: var(--space-1);
    background: var(--color-accent);
    vertical-align: middle;
}

/* ==========================================================================
   Carousel
   ========================================================================== */

.serene-carousel {
    position: relative;
    margin: var(--space-6) 0;
    background: var(--color-ink);
}

.serene-carousel .carousel-inner > .item > img {
    margin: 0 auto;
}

.serene-carousel-control {
    width: auto;
    top: 50%;
    bottom: auto;
    transform: translateY(-50%);
    background: none;
    opacity: 1;
    text-shadow: none;
}

.serene-carousel-control.left,
.serene-carousel-control.right {
    background-image: none;
}

.serene-carousel-control.left {
    left: 16px;
}

.serene-carousel-control.right {
    right: 16px;
}

.serene-carousel-chevron {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--color-ink-overlay);
    color: var(--color-on-dark);
    font-size: 24px;
    line-height: 1;
    transition: background 0.2s;
}

.serene-carousel-control:hover .serene-carousel-chevron,
.serene-carousel-control:focus .serene-carousel-chevron {
    background: var(--color-ink);
}

.serene-carousel-dots li {
    width: 10px;
    height: 10px;
    margin: 0 5px;
    border: 0;
    border-radius: 50%;
    background: var(--color-hairline);
}

.serene-carousel-dots li.active {
    width: 10px;
    height: 10px;
    margin: 0 5px;
    background: var(--color-accent);
}

/* ==========================================================================
   Promoted pages (card grid)
   ========================================================================== */

.serene-card-grid {
    display: flex;
    flex-wrap: wrap;
}

.serene-card-col {
    margin-bottom: var(--space-4);
    display: flex;
}

a.serene-card {
    display: flex;
    flex-direction: column;
    width: 100%;
    overflow: hidden;
    background: var(--color-bg);
    border-top: 2px solid transparent;
    box-shadow: var(--shadow-card);
    border-radius: var(--radius);
    transition: border-color 0.2s;
}

a.serene-card:hover,
a.serene-card:focus {
    text-decoration: none;
    border-top-color: var(--color-accent);
}

.serene-card-media {
    display: block;
    overflow: hidden;
}

.serene-card-media img {
    width: 100%;
    transition: transform 0.3s;
}

a.serene-card:hover .serene-card-media img,
a.serene-card:focus .serene-card-media img {
    transform: scale(1.03);
}

.serene-card-body {
    display: block;
    flex: 1 0 auto;
    padding: var(--space-3);
}

.serene-card-title {
    display: block;
    font-family: var(--font-heading);
    font-size: var(--fs-h4);
    font-weight: var(--fw-semibold);
    color: var(--color-ink);
    transition: color 0.2s;
}

a.serene-card:hover .serene-card-title,
a.serene-card:focus .serene-card-title {
    color: var(--color-primary);
}

/* ==========================================================================
   People (portrait grid)
   ========================================================================== */

.serene-person {
    margin-bottom: var(--space-4);
}

.serene-person-photo {
    border-radius: 50%;
    border: 4px solid var(--color-bg);
    box-shadow: var(--shadow-card);
}

.serene-person-name {
    font-family: var(--font-heading);
    font-size: var(--fs-h4);
    font-weight: var(--fw-semibold);
    color: var(--color-ink);
    margin-top: var(--space-2);
    margin-bottom: 0;
}

.serene-person-role {
    font-family: var(--font-body);
    font-size: var(--fs-small);
    color: var(--color-primary);
    margin-top: var(--space-1);
}

/* ==========================================================================
   Documents (file list)
   ========================================================================== */

.serene-docs {
    margin: var(--space-5) 0;
}

.serene-doc {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-2);
    padding: var(--space-2) 0;
    border-bottom: var(--hairline);
}

.serene-doc-link {
    font-family: var(--font-body);
    font-size: var(--fs-body);
    color: var(--color-primary);
}

.serene-doc-link:hover {
    color: var(--color-accent);
}

.serene-doc-ext {
    flex: none;
    font-family: var(--font-body);
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--color-primary);
    border: var(--hairline);
    padding: 2px 8px;
}

/* ==========================================================================
   Contact (two-column)
   ========================================================================== */

.serene-contact {
    margin: var(--space-6) 0;
}

.serene-contact-map iframe {
    width: 100%;
    height: 320px;
    border: var(--hairline);
}

.serene-address {
    background: var(--color-warm-wash);
    padding: var(--space-4);
    font-family: var(--font-body);
    font-size: var(--fs-body);
    font-style: normal;
    line-height: var(--lh-body);
    color: var(--color-body);
}

.serene-contact-name {
    display: inline-block;
    font-family: var(--font-heading);
    font-size: var(--fs-lead);
    font-weight: var(--fw-semibold);
    color: var(--color-ink);
    margin-bottom: var(--space-2);
}

.serene-address a {
    color: var(--color-primary);
}

.serene-address a:hover {
    color: var(--color-accent);
}

/* ==========================================================================
   Responsive video / iframe embed (gaps: raw_html video)
   ========================================================================== */

.serene-embed {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 9;
}

.serene-embed iframe {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    border: 0;
}

/* ==========================================================================
   Code block addon (folded in from texsite-clean-blog.css)
   ========================================================================== */

.cbta-code-container {
    position: relative;
}

.cbta-code-container pre {
    border-radius: 0;
}

.cbta-code-copy-button {
    position: absolute;
    top: 5px;
    right: 5px;
    padding: 5px 10px;
    font-size: 12px;
    font-weight: 400;
}

.cbta-code-language-label {
    position: absolute;
    bottom: 0;
    right: 0;
    background-color: #fff;
    padding: 2px 5px;
    margin: 0 1px 1px 0;
    font-size: 12px;
}

/* ==========================================================================
   Mobile type scale reductions
   ========================================================================== */

@media (max-width: 767px) {
    :root {
        --fs-h1: 28px;
        --fs-h2: 24px;
        --fs-lead: 18px;
        --fs-body: 16px;
    }
}