/* ==========================================================================
   SHABDSETU — style.css
   A warm, library-inspired design system: aged paper, cedar wood, gilt gold.
   ========================================================================== */

/* ---------------------------------------------------------------------- */
/* 1. DESIGN TOKENS                                                        */
/* ---------------------------------------------------------------------- */
:root {
    /* Palette */
    --color-bg:        #F9ECD9;   /* aged paper */
    --color-bg-alt:     #F4E2C4;   /* slightly deeper paper, for cards */
    --color-ink:        #3D2B1F;   /* main text — coffee bean */
    --color-ink-soft:    #6B5847;   /* secondary text */
    --color-ink-faint:   #8A7860;

    --color-wood-dark:   #3B1E0E;
    --color-wood:        #58311A;
    --color-wood-light:  #6F4E37;

    --color-accent:      #CD5C10;   /* burnt orange — spine leather */
    --color-accent-dark: #B04C0C;
    --color-accent-soft: #E1A34D;

    --color-gold:        #FFD27A;
    --color-border:      #E5D8BC;

    /* Feedback colors (used by JS-driven toasts / form messages) */
    --color-success:     #4AAE68;
    --color-error:       #D6453A;

    /* Type */
    --font-display: 'Playfair Display', serif;
    --font-body:    'Poppins', sans-serif;

    /* Spacing scale (base 8px) */
    --space-1: 8px;
    --space-2: 16px;
    --space-3: 24px;
    --space-4: 32px;
    --space-5: 48px;
    --space-6: 64px;
    --space-7: 96px;

    /* Layout */
    --container-w: 1200px;
    --header-h: 77px;

    /* Effects */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --shadow-sm: 0 2px 8px rgba(61, 43, 31, 0.08);
    --shadow-md: 0 8px 24px rgba(61, 43, 31, 0.14);
    --shadow-lg: 0 18px 40px rgba(61, 43, 31, 0.20);
    --ease: cubic-bezier(0.22, 1, 0.36, 1);
    --transition: 0.3s var(--ease);
}

/* ---------------------------------------------------------------------- */
/* 2. RESET / BASE                                                         */
/* ---------------------------------------------------------------------- */
* { box-sizing: border-box; }

html {
    margin: 0;
    padding: 0;
    width: 100%;
    min-height: 100%;
    scroll-behavior: smooth;
}

body {
    margin: 0;
    padding: 0;
    width: 100%;
    min-height: 100vh;
    padding-top: var(--header-h);
    font-family: var(--font-body);
    background-color: var(--color-bg);
    color: var(--color-ink);
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

h1, h2, h3 { font-family: var(--font-display); margin: 0; }
p { margin: 0; }
a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }
button { font-family: var(--font-body); }

.container {
    max-width: var(--container-w);
    margin: 0 auto;
    padding: 0 var(--space-4);
}

/* Buttons ----------------------------------------------------------------*/
.btn {
    font-family: var(--font-body);
    font-weight: 600;
    font-size: 14px;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: transform var(--transition), background-color var(--transition), box-shadow var(--transition);
}

.btn:active { transform: translateY(1px); }

.btn-lg {
    padding: 15px 32px;
    font-size: 15px;
    border-radius: 10px;
}

.btn-outline {
    background: transparent;
    color: #f5ecd8;
    border: 1px solid #cbb99b;
    padding: 9px 20px;
}
.btn-outline:hover { background: rgba(255,255,255,0.08); }

.btn-primary {
    background-color: var(--color-accent);
    color: #fff;
    padding: 9px 22px;
    box-shadow: 0 6px 16px rgba(205, 92, 16, 0.28);
}
.btn-primary:hover {
    background-color: var(--color-accent-dark);
    transform: translateY(-2px);
    box-shadow: 0 10px 22px rgba(205, 92, 16, 0.35);
}

.btn-secondary {
    background-color: var(--color-accent-soft);
    color: var(--color-ink);
    border: 1px solid var(--color-border);
}
.btn-secondary:hover {
    background-color: #e0c69e;
    transform: translateY(-2px);
}

/* Section heading ----------------------------------------------------------*/
.section-heading {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 32px;
    font-weight: 700;
    color: var(--color-ink);
}
.section-heading i {
    color: #8B5E3C;
    font-size: 28px;
    margin-right: 10px;
}
.section-heading::before {
    content: "📖";
    font-size: 30px;
}
.section-heading::after {
    content: "";
    flex: 1;
    height: 2px;
    background: linear-gradient(to right, var(--color-accent), var(--color-accent-soft));
    margin-left: 15px;
}
.section-heading.center {
    justify-content: center;
    text-align: center;
}
.section-heading.center::before { order: -1; }

/* Reveal-on-load animation utility ----------------------------------------*/
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(24px); }
    to   { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
    from { opacity: 0; }
    to   { opacity: 1; }
}

/* ---------------------------------------------------------------------- */
/* 3. HEADER                                                                */
/* ---------------------------------------------------------------------- */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: linear-gradient(#58311a, #6A3C1B, #421f0b, #6F4E37);
    box-shadow: 0 4px 12px rgba(0,0,0,0.25);
    padding: 18px 0;
    z-index: 1000;
    transition: padding var(--transition), box-shadow var(--transition);
}

.header-inner {
    max-width: var(--container-w);
    margin: 0 auto;
    padding: 0 var(--space-4);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-display);
    font-size: 24px;
    font-weight: 700;
    color: #f5ecd8;
    padding-right: 40px;
}
.logo i {
    background-color: var(--color-accent);
    color: #fff;
    padding: 10px;
    border-radius: var(--radius-sm);
    font-size: 16px;
}

.main-nav { display: flex; gap: 36px; }
.main-nav a {
    position: relative;
    color: #e8dcc6;
    font-size: 15px;
    font-weight: 500;
    transition: color var(--transition);
}
.main-nav a::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: -6px;
    width: 0;
    height: 2px;
    background: var(--color-accent-soft);
    transition: width var(--transition);
}
.main-nav a:hover { color: #ffffff; }
.main-nav a:hover::after { width: 100%; }

.header-actions { display: flex; gap: 12px; margin-left: 10px; }

.active-link {
    color: #ffffff !important;
    border-bottom: 2px solid #e2691f;
    padding-bottom: 4px;
}

/* Mobile nav toggle (hook up in header.jsp; hidden above 768px) */
.nav-toggle {
    display: none;
    background: none;
    border: none;
    color: #f5ecd8;
    font-size: 22px;
    cursor: pointer;
}

/* ---------------------------------------------------------------------- */
/* 4. HERO                                                                  */
/* ---------------------------------------------------------------------- */
.hero {
    background-color: #f9e7cf;
    background-image: url("../IMG/hero.png");
    background-repeat: no-repeat;
    background-size: cover;
    background-position: center;
    border-bottom: 4px solid #5c3a22;
    min-height: 650px;
    display: flex;
    align-items: center;
}

.hero-inner {
    width: 100%;
    max-width: var(--container-w);
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-6) var(--space-4);
    gap: var(--space-5);
}

.hero-text { flex: 1; max-width: 620px; animation: fadeInUp 0.8s var(--ease) both; }

.hero-text h1 {
    font-size: 46px;
    font-weight: 700;
    color: var(--color-ink);
    margin-bottom: 18px;
    line-height: 1.2;
}

.highlight {
    position: relative;
    display: inline-block;
    font-style: italic;
    font-weight: 700;
    color: var(--color-accent);
    letter-spacing: 1px;
    transition: transform var(--transition), text-shadow var(--transition);
}
.highlight::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: -6px;
    width: 100%;
    height: 4px;
    background: linear-gradient(to right, var(--color-accent), var(--color-accent-soft));
    border-radius: 50px;
    transition: width var(--transition);
}
.highlight:hover { transform: translateY(-2px); text-shadow: 0 4px 10px rgba(205, 92, 16, 0.3); }
.highlight:hover::after { width: 110%; }

.hero-sub {
    font-size: 17px;
    color: var(--color-ink-soft);
    margin-bottom: 26px;
    line-height: 1.6;
}

.search-bar {
    background-color: #faefdd;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 18px;
    margin-bottom: 22px;
    box-shadow: var(--shadow-sm);
    transition: box-shadow var(--transition), border-color var(--transition);
}
.search-bar:focus-within {
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(205, 92, 16, 0.15);
}
.search-bar i { color: #a08a6f; }
.search-bar input {
    border: none;
    outline: none;
    background: transparent;
    font-family: var(--font-body);
    font-size: 15px;
    width: 100%;
    color: var(--color-ink);
}
.search-bar input::placeholder { color: #a08a6f; }

.hero-buttons {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}
.hero-buttons .btn {
    min-width: 200px;
    height: 50px;
    display: flex;
    justify-content: center;
    align-items: center;
}

/* ---------------------------------------------------------------------- */
/* 5. CATEGORIES                                                           */
/* ---------------------------------------------------------------------- */
.categories-section {
    width: 100%;
    max-width: var(--container-w);
    margin: var(--space-6) auto;
    padding: 0 var(--space-4);
}

.categories-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: var(--space-2);
    margin-top: var(--space-2);
}

.category-pill {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 16px 20px;
    border-radius: var(--radius-md);
    color: #fff;
    font-size: 15px;
    font-weight: 600;
    transition: transform var(--transition), box-shadow var(--transition);
    box-shadow: 0 5px 12px rgba(0,0,0,.15);
    opacity: 0;
    animation: fadeInUp 0.6s var(--ease) both;
}
.categories-list .category-pill:nth-child(1) { animation-delay: 0.05s; }
.categories-list .category-pill:nth-child(2) { animation-delay: 0.12s; }
.categories-list .category-pill:nth-child(3) { animation-delay: 0.19s; }
.categories-list .category-pill:nth-child(4) { animation-delay: 0.26s; }
.categories-list .category-pill:nth-child(5) { animation-delay: 0.33s; }

.category-pill:hover { transform: translateY(-5px); box-shadow: 0 10px 20px rgba(0,0,0,.2); }
.category-pill i { font-size: 18px; }

/* Category colors */
.fiction{background:#D75028;} .romance{background:#C94C6D;} .mystery{background:#4E6B3A;}
.scifi{background:#2F80ED;} .fantasy{background:#7B4BB7;} .thriller{background:#4B3F72;}
.horror{background:#8B1E1E;} .biography{background:#12355A;} .history{background:#8C6239;}
.poetry{background:#E67E22;} .adventure{background:#009688;} .classics{background:#795548;}
.children{background:#F4B400;} .selfhelp{background:#43A047;} .business{background:#1565C0;}
.technology{background:#455A64;} .programming{background:#3949AB;} .psychology{background:#8E44AD;}
.philosophy{background:#5D4037;} .health{background:#E53935;} .cooking{background:#FB8C00;}
.travel{background:#00ACC1;} .comics{background:#EC407A;} .education{background:#6A1B9A;}
.category-pill.art { background: #D81B60; }

/* ---------------------------------------------------------------------- */
/* 6. FEATURED BOOKS                                                        */
/* ---------------------------------------------------------------------- */
.featured-section {
    width: 100%;
    max-width: var(--container-w);
    margin: var(--space-6) auto;
    padding: 0 var(--space-4);
}

.bookshelf {
    margin-top: var(--space-3);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    transition: transform var(--transition), box-shadow var(--transition);
}
.bookshelf:hover {
    transform: translateY(-6px);
    box-shadow: 0 26px 50px rgba(61, 43, 31, 0.28);
}
.bookshelf img { width: 100%; }

/* Optional continuous shelf slider (use on a "browse all" page) */
.library {
    position: relative;
    overflow: hidden;
    padding: 40px 0 20px;
    margin-top: 10px;
    border-radius: var(--radius-md);
    background-image: url("../IMG/library.jpg");
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}
.book-slider {
    display: flex;
    align-items: flex-end;
    animation: slide 50s linear infinite;
}
@keyframes slide {
    from { transform: translateX(0); }
    to   { transform: translateX(-50%); }
}
.book-slider img {
    width: 140px;
    height: 210px;
    object-fit: cover;
    border-radius: 4px 4px 2px 2px;
    margin: 0 12px;
    cursor: pointer;
    transition: transform 0.4s var(--ease), box-shadow 0.4s var(--ease);
    box-shadow: 0 8px 18px rgba(0,0,0,0.25), 2px 0 4px rgba(255,255,255,0.15) inset, -2px 0 4px rgba(0,0,0,0.12) inset;
    transform-origin: bottom center;
}
.book-slider img:hover { transform: translateY(-20px) scale(1.1); }

.wood-shelf {
    width: 100%;
    height: 18px;
    background: linear-gradient(to bottom, #9b6b3f, #5b3a1a);
    border-radius: 4px;
    box-shadow: 0 8px 15px rgba(0,0,0,.3);
}

/* ---------------------------------------------------------------------- */
/* 7. HIGHLIGHTS                                                            */
/* ---------------------------------------------------------------------- */
.highlights-section {
    width: 100%;
    max-width: var(--container-w);
    margin: var(--space-6) auto 0;
    padding: 0 var(--space-4) var(--space-5);
    display: flex;
    gap: var(--space-3);
    flex-wrap: wrap;
}

.highlight-card {
    flex: 1 1 260px;
    background-color: var(--color-bg-alt);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 22px;
    display: flex;
    align-items: center;
    gap: 16px;
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition), box-shadow var(--transition), opacity var(--transition);
}
.highlight-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-md);
}

.highlight-icon {
    width: 42px;
    height: 42px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 16px;
    flex-shrink: 0;
    transition: transform var(--transition);
}
.highlight-card:hover .highlight-icon { transform: scale(1.12) rotate(-4deg); }

.highlight-icon.red { background-color: #d6453a; }
.highlight-icon.green { background-color: #4aae68; }
.highlight-icon.orange { background-color: #fda448; }

.highlight-text h3 {
    font-size: 16px;
    font-weight: 600;
    font-family: var(--font-body);
    color: var(--color-ink);
    margin-bottom: 4px;
}
.highlight-text p { font-size: 13px; color: var(--color-ink-faint); }

/* ---------------------------------------------------------------------- */
/* 8. TESTIMONIALS                                                          */
/* ---------------------------------------------------------------------- */
.testimonials-section {
    width: 100%;
    max-width: var(--container-w);
    margin: var(--space-6) auto;
    padding: 0 var(--space-4);
}

.testimonial-wrapper {
    overflow: hidden;
    width: 100%;
    margin-top: var(--space-2);
}

.testimonials-list {
    display: flex;
    width: max-content;
    gap: 25px;
    animation: testimonialScroll 30s linear infinite;
}
@keyframes testimonialScroll {
    from { transform: translateX(0); }
    to   { transform: translateX(calc(-50% - 12.5px)); }
}
.testimonials-list:hover { animation-play-state: paused; }

.testimonial-card {
    width: 350px;
    flex-shrink: 0;
    background: var(--color-bg-alt);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 24px;
    display: flex;
    gap: 16px;
    align-items: flex-start;
    transition: transform var(--transition), box-shadow var(--transition);
}
.testimonial-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-md);
}

.avatar {
    width: 55px;
    height: 55px;
    border-radius: 50%;
    object-fit: cover;
    flex-shrink: 0;
    border: 2px solid var(--color-accent-soft);
}

.stars.small { font-size: 13px; margin-bottom: 8px; color: var(--color-accent); }

.testimonial-content p {
    font-size: 14px;
    color: #4a3c2c;
    margin-bottom: 10px;
    line-height: 1.5;
}
.reviewer-name { font-weight: 600; font-size: 14px; color: var(--color-ink); }

/* ---------------------------------------------------------------------- */
/* 9. FOOTER                                                                */
/* ---------------------------------------------------------------------- */
.footer {
    background: linear-gradient(180deg, var(--color-wood-light), var(--color-wood-dark));
    color: #fff;
    margin-top: var(--space-6);
}

.footer-container {
    max-width: 1300px;
    margin: auto;
    padding: var(--space-6) var(--space-4) var(--space-4);
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 2fr;
    gap: var(--space-5);
}

.footer-logo { font-size: 30px; color: var(--color-gold); margin-bottom: 15px; }
.footer-logo i { margin-right: 8px; }

.footer-about { color: #ddd; line-height: 1.8; margin-bottom: 25px; }

.footer-column h3 { color: var(--color-gold); margin-bottom: 20px; font-size: 19px; font-family: var(--font-display); }
.footer-column ul { list-style: none; margin: 0; padding: 0; }
.footer-column ul li { margin-bottom: 12px; }
.footer-column ul li a { color: #ddd; transition: color var(--transition), padding-left var(--transition); }
.footer-column ul li a:hover { color: var(--color-gold); padding-left: 6px; }

.social-icons { display: flex; gap: 12px; }
.social-icons a {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    background: rgba(255,255,255,.1);
    display: flex;
    justify-content: center;
    align-items: center;
    color: #fff;
    transition: background var(--transition), color var(--transition), transform var(--transition);
}
.social-icons a:hover { background: var(--color-gold); color: var(--color-wood-dark); transform: translateY(-5px); }

.newsletter { display: flex; margin-top: 20px; }
.newsletter input {
    flex: 1;
    min-width: 0;
    padding: 14px;
    border: none;
    outline: none;
    border-radius: 8px 0 0 8px;
    font-family: var(--font-body);
}
.newsletter button {
    padding: 14px 22px;
    border: none;
    background: var(--color-gold);
    color: var(--color-wood-dark);
    font-weight: 600;
    cursor: pointer;
    border-radius: 0 8px 8px 0;
    transition: background var(--transition);
    white-space: nowrap;
}
.newsletter button:hover { background: #F4B942; }

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,.15);
    text-align: center;
    padding: 22px;
    color: #ddd;
    font-size: 14px;
}

/* ---------------------------------------------------------------------- */
/* 10. RESPONSIVE                                                          */
/* ---------------------------------------------------------------------- */
@media (max-width: 1024px) {
    .hero-inner { flex-direction: column; padding: var(--space-5) var(--space-3); }
    .hero-text { max-width: 100%; text-align: center; }
    .highlight::after { left: 50%; transform: translateX(-50%); }
    .hero-buttons { justify-content: center; }
    .search-bar { max-width: 500px; margin-left: auto; margin-right: auto; }

    .footer-container { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
    .main-nav { display: none; }
    .nav-toggle { display: block; }
    .header-inner { padding: 0 var(--space-3); }

    .hero { min-height: auto; }
    .hero-text h1 { font-size: 32px; }
    .hero-sub { font-size: 15px; }

    .section-heading { font-size: 26px; }

    .categories-list { grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); }

    .highlights-section { flex-direction: column; padding: var(--space-1) var(--space-3) var(--space-4); }
    .highlight-card { flex: 1 1 auto; }

    .testimonials-section,
    .categories-section,
    .featured-section { padding-left: var(--space-3); padding-right: var(--space-3); margin: var(--space-5) auto; }

    .footer-container { grid-template-columns: 1fr; padding: var(--space-5) var(--space-3) var(--space-3); gap: var(--space-4); }
}

@media (max-width: 480px) {
    :root { --header-h: 66px; }
    .header { padding: 14px 0; }
    .logo { font-size: 20px; padding-right: 0; }

    .hero-inner { padding: var(--space-4) var(--space-2); }
    .hero-text h1 { font-size: 26px; }
    .hero-buttons { flex-direction: column; }
    .hero-buttons .btn { width: 100%; min-width: 0; }

    .section-heading { font-size: 22px; }
    .section-heading::before { font-size: 22px; }

    .testimonial-card { width: 280px; padding: 18px; }

    .newsletter { flex-direction: column; }
    .newsletter input { border-radius: 8px; margin-bottom: 10px; }
    .newsletter button { border-radius: 8px; }
}

/* ---------------------------------------------------------------------- */
/* 11. ACCESSIBILITY                                                        */
/* ---------------------------------------------------------------------- */
a:focus-visible,
button:focus-visible,
input:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.001ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.001ms !important;
        scroll-behavior: auto !important;
    }
}

/* ---------------------------------------------------------------------- */
/* 12. JS-DRIVEN STATES                                                     */
/* New rules only — nothing above this line was changed. Same palette,     */
/* same tokens, same fonts. These support main.js: scrolled header,        */
/* mobile nav drawer, scroll-reveal, toast notifications, back-to-top,     */
/* newsletter/search feedback, and a slider hover-pause.                   */
/* ---------------------------------------------------------------------- */

/* Header gets tighter + a stronger shadow once the page is scrolled */
.header.scrolled {
    padding: 10px 0;
    box-shadow: 0 6px 18px rgba(0,0,0,0.35);
}

/* Pause the featured-books shelf on hover, same way testimonials already do */
.library:hover .book-slider {
    animation-play-state: paused;
}

/* Mobile nav drawer state, toggled by main.js on .main-nav.
   Only takes visual effect at/under 768px, where .nav-toggle is shown. */
@media (max-width: 768px) {
    .main-nav {
        display: flex;
        flex-direction: column;
        gap: 0;
        position: fixed;
        top: var(--header-h);
        right: 0;
        width: min(280px, 80vw);
        height: calc(100vh - var(--header-h));
        background: linear-gradient(180deg, var(--color-wood-light), var(--color-wood-dark));
        padding: var(--space-3);
        box-shadow: -8px 0 24px rgba(0,0,0,0.3);
        transform: translateX(100%);
        transition: transform var(--transition);
        z-index: 999;
    }
    .main-nav.nav-open { transform: translateX(0); }
    .main-nav a {
        padding: 14px 4px;
        border-bottom: 1px solid rgba(255,255,255,0.08);
        width: 100%;
    }
    .main-nav a::after { display: none; }

    .nav-toggle[aria-expanded="true"] i::before { content: "\f00d"; } /* swap bars -> xmark */
}

/* Scroll-reveal utility, applied by main.js via IntersectionObserver */
.reveal {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}
.reveal.in-view {
    opacity: 1;
    transform: translateY(0);
}

/* Back to top button */
.back-to-top {
    position: fixed;
    right: 24px;
    bottom: 24px;
    width: 46px;
    height: 46px;
    border-radius: 50%;
    border: none;
    background-color: var(--color-accent);
    color: #fff;
    font-size: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: var(--shadow-md);
    opacity: 0;
    visibility: hidden;
    transform: translateY(12px);
    transition: opacity var(--transition), transform var(--transition), visibility var(--transition), background-color var(--transition);
    z-index: 900;
}
.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}
.back-to-top:hover { background-color: var(--color-accent-dark); }

/* Toast notification (search / newsletter feedback) */
.toast {
    position: fixed;
    left: 50%;
    bottom: 28px;
    transform: translate(-50%, 16px);
    background: var(--color-wood-dark);
    color: #f5ecd8;
    padding: 14px 22px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity var(--transition), transform var(--transition), visibility var(--transition);
    z-index: 1100;
}
.toast.show {
    opacity: 1;
    visibility: visible;
    transform: translate(-50%, 0);
}
.toast.toast-success { border-left: 4px solid var(--color-success); }
.toast.toast-error { border-left: 4px solid var(--color-error); }

/* Inline newsletter form message */
.form-msg {
    font-size: 13px;
    margin-top: 8px;
    min-height: 16px;
}
.form-msg.success { color: var(--color-success); }
.form-msg.error { color: #ffb4ac; }

/* Invalid state for the newsletter email input, toggled via JS */
.newsletter input.invalid {
    outline: 2px solid var(--color-error);
    outline-offset: 1px;
}