/* ============================================
   Dynamic Grow Design - Premium Styles
   Font: Outfit (Sans-Serif) + JetBrains Mono
   Vibe: Soft Structuralism / Warm Neutrals
   ============================================ */

/* --- Reset & Base --- */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --color-bg: #FAFAF8;
    --color-bg-warm: #F5F3EF;
    --color-bg-dark: #1a1d1f;
    --color-bg-card: #ffffff;
    --color-text: #2c2c2c;
    --color-text-muted: #6b7280;
    --color-text-light: #9ca3af;
    --color-accent: #2d8a56;
    --color-accent-hover: #236d44;
    --color-accent-soft: #e8f5ee;
    --color-warm: #f0a832;
    --color-warm-soft: #fef3d6;
    --color-border: rgba(0, 0, 0, 0.06);
    --color-shadow: rgba(44, 62, 50, 0.08);
    --radius-sm: 0.75rem;
    --radius-md: 1.25rem;
    --radius-lg: 2rem;
    --radius-xl: 2.5rem;
    --font-sans: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    --font-spartan: 'League Spartan', -apple-system, sans-serif;
    --ease-out-expo: cubic-bezier(0.32, 0.72, 0, 1);
    --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
    --transition-base: 0.5s var(--ease-out-expo);
    --transition-fast: 0.3s var(--ease-out-expo);
}

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

body {
    font-family: var(--font-sans);
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.6;
    overflow-x: hidden;
}

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

a {
    text-decoration: none;
    color: inherit;
}

button {
    cursor: pointer;
    border: none;
    background: none;
    font-family: inherit;
}

/* --- Typography --- */
.section-eyebrow {
    display: inline-block;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.18em;
    color: var(--color-accent);
    background: var(--color-accent-soft);
    padding: 0.4rem 1rem;
    border-radius: 100px;
    margin-bottom: 1.5rem;
}

.section-title {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 700;
    letter-spacing: -0.03em;
    line-height: 1.1;
    color: var(--color-text);
    margin-bottom: 1.25rem;
}

.section-desc {
    font-size: 1.05rem;
    color: var(--color-text-muted);
    line-height: 1.7;
    max-width: 56ch;
}

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    font-family: var(--font-sans);
    font-size: 0.9rem;
    font-weight: 600;
    padding: 0.85rem 1.8rem;
    border-radius: 100px;
    transition: all var(--transition-fast);
    position: relative;
    white-space: nowrap;
}

.btn:active {
    transform: scale(0.97) translateY(1px);
}

.btn--primary {
    background: var(--color-accent);
    color: #fff;
    box-shadow: 0 4px 16px rgba(45, 138, 86, 0.25);
}

.btn--primary:hover {
    background: var(--color-accent-hover);
    box-shadow: 0 6px 24px rgba(45, 138, 86, 0.32);
    transform: translateY(-1px);
}

.btn--ghost {
    background: transparent;
    color: var(--color-text);
    border: 1.5px solid var(--color-border);
    backdrop-filter: blur(8px);
}

.btn--ghost:hover {
    border-color: var(--color-text-muted);
    background: rgba(0, 0, 0, 0.03);
}

.btn--white {
    background: #fff;
    color: var(--color-bg-dark);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1), inset 0 1px 0 rgba(255, 255, 255, 0.9);
}

.btn--white:hover {
    transform: translateY(-1px);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.15), inset 0 1px 0 rgba(255, 255, 255, 0.9);
}

.btn--ghost-light {
    background: transparent;
    color: #fff;
    border: 1.5px solid rgba(255, 255, 255, 0.25);
}

.btn--ghost-light:hover {
    border-color: rgba(255, 255, 255, 0.5);
    background: rgba(255, 255, 255, 0.08);
}

.btn--lg {
    padding: 1rem 2.2rem;
    font-size: 0.95rem;
}

.btn__icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.15);
    transition: transform var(--transition-fast);
}

.btn:hover .btn__icon {
    transform: translate(2px, -1px);
}

.btn--ghost .btn__icon {
    background: rgba(0, 0, 0, 0.06);
}

/* --- Navigation --- */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: 1.25rem 2rem;
    transition: all var(--transition-base);
}

.nav--scrolled {
    padding: 0.75rem 2rem;
}

.nav__inner {
    max-width: 1320px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: rgba(255, 255, 255, 0.75);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border: 1px solid rgba(255, 255, 255, 0.6);
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.04), inset 0 1px 0 rgba(255, 255, 255, 0.8);
    border-radius: 100px;
    padding: 0.5rem 0.5rem 0.5rem 1.5rem;
    transition: all var(--transition-base);
}

.nav--scrolled .nav__inner {
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.08), inset 0 1px 0 rgba(255, 255, 255, 0.8);
}

.nav__logo {
    display: flex;
    align-items: center;
}

.nav__logo-img {
    height: 32px;
    width: auto;
}

.nav__logo-text {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav__links {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.nav__link {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--color-text-muted);
    padding: 0.55rem 1rem;
    border-radius: 100px;
    transition: all var(--transition-fast);
}

.nav__link:hover {
    color: var(--color-text);
    background: rgba(0, 0, 0, 0.04);
}

.nav__link--active {
    color: var(--color-text);
    background: rgba(0, 0, 0, 0.05);
    font-weight: 600;
}

.nav__link--cta {
    color: #fff;
    padding: 0.55rem 1.2rem;
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
}

.nav__link--cta.nav__link--amazon {
    background: var(--color-warm);
    color: #1a1a1a;
}

.nav__link--cta.nav__link--amazon:hover {
    background: #d9922a;
    color: #1a1a1a;
}

.nav__link--cta.nav__link--etsy {
    background: #f1641e;
    color: #fff;
}

.nav__link--cta.nav__link--etsy:hover {
    background: #d9571a;
    color: #fff;
}

.nav__link-arrow {
    display: flex;
    opacity: 0.7;
}

.nav__burger {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 0.75rem;
    border-radius: 50%;
    width: 42px;
    height: 42px;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.04);
    transition: all var(--transition-fast);
}

.nav__burger span {
    display: block;
    width: 18px;
    height: 1.5px;
    background: var(--color-text);
    border-radius: 2px;
    transition: all 0.4s var(--ease-out-expo);
    transform-origin: center;
}

.nav__burger--active span:first-child {
    transform: rotate(45deg) translate(2.5px, 2.5px);
}

.nav__burger--active span:last-child {
    transform: rotate(-45deg) translate(2.5px, -2.5px);
}

/* --- Mobile Menu --- */
.mobile-menu {
    position: fixed;
    inset: 0;
    z-index: 99;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(40px) saturate(200%);
    -webkit-backdrop-filter: blur(40px) saturate(200%);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.5s var(--ease-out-expo);
}

.mobile-menu--open {
    opacity: 1;
    pointer-events: auto;
}

.mobile-menu__inner {
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
}

.mobile-menu__link {
    font-size: 1.75rem;
    font-weight: 600;
    color: var(--color-text);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    transform: translateY(20px);
    opacity: 0;
}

.mobile-menu--open .mobile-menu__link {
    transform: translateY(0);
    opacity: 1;
}

.mobile-menu--open .mobile-menu__link:nth-child(1) { transition-delay: 0.05s; }
.mobile-menu--open .mobile-menu__link:nth-child(2) { transition-delay: 0.1s; }
.mobile-menu--open .mobile-menu__link:nth-child(3) { transition-delay: 0.15s; }
.mobile-menu--open .mobile-menu__link:nth-child(4) { transition-delay: 0.2s; }
.mobile-menu--open .mobile-menu__link:nth-child(5) { transition-delay: 0.25s; }
.mobile-menu--open .mobile-menu__link:nth-child(6) { transition-delay: 0.3s; }

.mobile-menu__link:hover {
    color: var(--color-accent);
}

.mobile-menu__social {
    margin-top: 2rem;
    transform: translateY(20px);
    opacity: 0;
    transition: all var(--transition-base) 0.3s;
}

.mobile-menu--open .mobile-menu__social {
    transform: translateY(0);
    opacity: 1;
}

.mobile-menu__social a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: rgba(0, 0, 0, 0.05);
    color: var(--color-text);
    transition: all var(--transition-fast);
}

.mobile-menu__social a:hover {
    background: var(--color-accent);
    color: #fff;
}

/* --- Hero Section --- */
.hero {
    position: relative;
    min-height: 100dvh;
    display: flex;
    align-items: center;
    padding: 8rem 2rem 4rem;
    overflow: hidden;
}

.hero__bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.hero__gradient--1 {
    position: absolute;
    top: -20%;
    right: -10%;
    width: 60vw;
    height: 60vw;
    max-width: 800px;
    max-height: 800px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(45, 138, 86, 0.12) 0%, transparent 65%);
    filter: blur(80px);
}

.hero__gradient--2 {
    position: absolute;
    bottom: -20%;
    left: -10%;
    width: 50vw;
    height: 50vw;
    max-width: 600px;
    max-height: 600px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(240, 168, 50, 0.10) 0%, transparent 65%);
    filter: blur(80px);
}

.hero__grain {
    position: fixed;
    inset: 0;
    z-index: 50;
    pointer-events: none;
    opacity: 0.025;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
    background-repeat: repeat;
    background-size: 256px 256px;
}

.hero__content {
    position: relative;
    z-index: 1;
    max-width: 1320px;
    margin: 0 auto;
    width: 100%;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero__eyebrow {
    display: inline-block;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.18em;
    color: var(--color-accent);
    background: var(--color-accent-soft);
    padding: 0.4rem 1rem;
    border-radius: 100px;
    margin-bottom: 1.5rem;
}

.hero__title {
    font-size: clamp(2.8rem, 6vw, 5rem);
    font-weight: 800;
    letter-spacing: -0.04em;
    line-height: 1;
    color: var(--color-text);
    margin-bottom: 1.5rem;
}

.hero__desc {
    font-size: 1.1rem;
    color: var(--color-text-muted);
    line-height: 1.7;
    max-width: 50ch;
    margin-bottom: 2.5rem;
}

.hero__actions {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

/* Hero Book Stack */
.hero__visual {
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

.hero__book-stack {
    position: relative;
    width: 420px;
    height: 540px;
}

.hero__book {
    position: absolute;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: 0 24px 64px rgba(0, 0, 0, 0.12), 0 8px 24px rgba(0, 0, 0, 0.08);
    transition: transform 0.8s var(--ease-out-expo);
    will-change: transform;
}

.hero__book img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero__book--1 {
    width: 275px;
    height: 385px;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) rotate(-3deg);
    z-index: 3;
}

.hero__book--2 {
    width: 250px;
    height: 350px;
    top: 50%;
    left: 20%;
    transform: translate(-50%, -55%) rotate(-8deg);
    z-index: 2;
    opacity: 0.9;
}

.hero__book--3 {
    width: 250px;
    height: 350px;
    top: 50%;
    right: 0;
    transform: translate(-10%, -45%) rotate(6deg);
    z-index: 1;
    opacity: 0.85;
}

.hero__book:hover {
    z-index: 10;
    transform: translate(-50%, -55%) rotate(0deg) scale(1.05);
}

.hero__book--2:hover {
    transform: translate(-50%, -60%) rotate(0deg) scale(1.05);
}

.hero__book--3:hover {
    transform: translate(-10%, -50%) rotate(0deg) scale(1.05);
}

/* Scroll Hint */
.hero__scroll-hint {
    position: absolute;
    bottom: 2.5rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    z-index: 1;
}

.hero__scroll-hint span {
    font-size: 0.65rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--color-text-light);
}

.hero__scroll-line {
    width: 1px;
    height: 40px;
    background: var(--color-text-light);
    position: relative;
    overflow: hidden;
}

.hero__scroll-line::after {
    content: '';
    position: absolute;
    top: -100%;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--color-accent);
    animation: scrollLine 2s var(--ease-out-expo) infinite;
}

@keyframes scrollLine {
    0% { top: -100%; }
    50% { top: 100%; }
    100% { top: 100%; }
}

/* Floating animation for hero books */
@keyframes float1 {
    0%, 100% { transform: translate(-50%, -50%) rotate(-3deg); }
    50% { transform: translate(-50%, -53%) rotate(-2deg); }
}

@keyframes float2 {
    0%, 100% { transform: translate(-50%, -55%) rotate(-8deg); }
    50% { transform: translate(-50%, -58%) rotate(-7deg); }
}

@keyframes float3 {
    0%, 100% { transform: translate(-10%, -45%) rotate(6deg); }
    50% { transform: translate(-10%, -48%) rotate(5deg); }
}

.hero__book--1 { animation: float1 6s ease-in-out infinite; }
.hero__book--2 { animation: float2 7s ease-in-out infinite -2s; }
.hero__book--3 { animation: float3 5.5s ease-in-out infinite -1.5s; }

.hero__book:hover {
    animation-play-state: paused;
}

/* --- Stats Band --- */
.stats {
    padding: 3rem 2rem;
    background: var(--color-bg-warm);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

.stats__inner {
    max-width: 1100px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 3rem;
}

.stats__item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.25rem;
    text-align: center;
}

.stats__number {
    font-size: 2rem;
    font-weight: 800;
    letter-spacing: -0.03em;
    color: var(--color-text);
    font-family: var(--font-mono);
}

.stats__label {
    font-size: 0.78rem;
    font-weight: 500;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.stats__divider {
    width: 1px;
    height: 40px;
    background: var(--color-border);
}

/* --- Books Section --- */
.books {
    padding: 6rem 2rem 8rem;
}

.books__container {
    max-width: 1320px;
    margin: 0 auto;
}

.books__header {
    text-align: left;
    margin-bottom: 3rem;
}

/* Filter */
.books__filter {
    display: flex;
    gap: 0.4rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.filter-btn {
    font-size: 0.8rem;
    font-weight: 500;
    padding: 0.5rem 1.2rem;
    border-radius: 100px;
    color: var(--color-text-muted);
    background: transparent;
    border: 1.5px solid var(--color-border);
    transition: all var(--transition-fast);
}

.filter-btn:hover {
    border-color: var(--color-text-muted);
    color: var(--color-text);
}

.filter-btn--active {
    background: var(--color-accent);
    color: #fff;
    border-color: var(--color-accent);
    box-shadow: 0 4px 16px rgba(45, 138, 86, 0.25), inset 0 1px 0 rgba(255, 255, 255, 0.15);
}

.filter-btn--active:hover {
    background: var(--color-accent-hover);
    border-color: var(--color-accent-hover);
    color: #fff;
    box-shadow: 0 6px 20px rgba(45, 138, 86, 0.32), inset 0 1px 0 rgba(255, 255, 255, 0.15);
}

/* Book Card stagger reveal */
.book-card[data-reveal] {
    transition-delay: calc(var(--card-index, 0) * 30ms);
}

/* Book Grid */
.books__grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.75rem;
}

/* Book Card - Double Bezel Architecture */
.book-card {
    border-radius: var(--radius-xl);
    background: rgba(0, 0, 0, 0.04);
    padding: 0.5rem;
    border: 1px solid var(--color-border);
    transition: all 0.6s var(--ease-out-expo);
}

.book-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 48px var(--color-shadow);
    border-color: rgba(0, 0, 0, 0.1);
}

.book-card.hidden {
    display: none;
}

.book-card__image-wrap {
    position: relative;
    overflow: hidden;
    border-radius: calc(2.5rem - 0.5rem);
}

.book-card__image-shell {
    aspect-ratio: 3 / 4;
    overflow: hidden;
    border-radius: calc(2.5rem - 0.5rem);
    background: var(--color-bg-warm);
}

.book-card__image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s var(--ease-out-expo);
}

.book-card:hover .book-card__image {
    transform: scale(1.04);
}

.book-card__badge {
    position: absolute;
    top: 0.75rem;
    right: 0.75rem;
    font-size: 0.65rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    padding: 0.3rem 0.7rem;
    border-radius: 100px;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    color: var(--color-text);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.book-card__body {
    padding: 1.25rem 0.75rem 0.75rem;
}

.book-card__tag {
    font-size: 0.65rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-accent);
}

.book-card__title {
    font-size: 1.1rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-top: 0.4rem;
    line-height: 1.25;
}

.book-card__subtitle {
    font-size: 0.8rem;
    color: var(--color-text-light);
    margin-top: 0.15rem;
}

.book-card__desc {
    font-size: 0.82rem;
    color: var(--color-text-muted);
    line-height: 1.6;
    margin-top: 0.6rem;
}

.book-card__links {
    display: flex;
    gap: 0.5rem;
    margin-top: 1rem;
    flex-wrap: wrap;
}

.book-card__link {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.78rem;
    font-weight: 600;
    padding: 0.45rem 1rem;
    border-radius: 100px;
    transition: all var(--transition-fast);
}

.book-card__link:active {
    transform: scale(0.96);
}

.book-card__link--amazon {
    background: var(--color-warm);
    color: #1a1a1a;
}

.book-card__link--amazon:hover {
    background: #d9922a;
    transform: translateY(-1px);
}

/* ── Amazon button micro-animation ─────────────────────────────── */
.book-card__link--amazon .cart-icon {
    position: relative;
    display: inline-flex;
    width: 16px;
    height: 16px;
    flex-shrink: 0;
    vertical-align: middle;
    overflow: visible;
}

/* cart SVG sits normally */
.book-card__link--amazon .cart-icon__cart {
    position: absolute;
    inset: 0;
}

.book-card__link--amazon:hover .cart-icon__cart {
    animation: cart-bump 0.5s var(--ease-spring) 0.3s both;
}

/* the book rect: starts above, drops into cart centre */
.book-card__link--amazon .cart-icon::before {
    content: '';
    position: absolute;
    width: 6px;
    height: 8px;
    border-radius: 1px;
    background: currentColor;
    top: 0;
    left: 60%;
    transform: translateX(-50%) translateY(-10px) scale(1);
    opacity: 0;
}

.book-card__link--amazon:hover .cart-icon::before {
    animation: dot-drop 0.5s var(--ease-out-expo) forwards;
}

@keyframes dot-drop {
    0%   { opacity: 1; transform: translateX(-50%) translateY(-10px) scale(1); }
    55%  { opacity: 1; transform: translateX(-50%) translateY(4px) scale(1); }
    70%  { opacity: 1; transform: translateX(-50%) translateY(5px) scale(0.85); }
    100% { opacity: 0; transform: translateX(-50%) translateY(5px) scale(0.85); }
}

@keyframes cart-bump {
    0%   { transform: scale(1) rotate(0deg); }
    35%  { transform: scale(1.2) rotate(-6deg) translateY(-1px); }
    65%  { transform: scale(0.92) rotate(3deg); }
    100% { transform: scale(1) rotate(0deg); }
}

.book-card__link--etsy {
    background: #f1641e;
    color: #fff;
}

.book-card__link--etsy:hover {
    background: #d9571a;
    transform: translateY(-1px);
}

/* ── Instagram button micro-animation: shutter ──────────────────── */
.insta-icon {
    display: inline-flex;
    flex-shrink: 0;
}

.insta-icon__frame,
.insta-icon__lens,
.insta-icon__dot {
    transform-origin: center;
    transform-box: fill-box;
}

.btn--white:hover .insta-icon__lens {
    animation: shutter 0.5s var(--ease-spring) forwards;
}

.btn--white:hover .insta-icon__dot {
    animation: dot-flash 0.5s var(--ease-out-expo) forwards;
}

@keyframes shutter {
    0%   { transform: scale(1); }
    30%  { transform: scale(0.5); opacity: 0.4; }
    60%  { transform: scale(1.15); }
    100% { transform: scale(1); }
}

@keyframes dot-flash {
    0%   { opacity: 1; }
    25%  { opacity: 0; }
    60%  { opacity: 1; }
    100% { opacity: 1; }
}

/* ── Mail button micro-animation: flap open ─────────────────────── */
.mail-icon {
    display: inline-flex;
    flex-shrink: 0;
}

.mail-icon__flap {
    transform-origin: center top;
    transform-box: fill-box;
}

.btn--white:hover .mail-icon__flap {
    animation: flap-open 0.5s var(--ease-spring) forwards;
}

.btn--white:hover .mail-icon__envelope {
    animation: envelope-bump 0.5s var(--ease-spring) forwards;
}

@keyframes flap-open {
    0%   { transform: translateY(0) scaleY(1); }
    40%  { transform: translateY(-3px) scaleY(-0.6); }
    70%  { transform: translateY(-1px) scaleY(1.1); }
    100% { transform: translateY(0) scaleY(1); }
}

@keyframes envelope-bump {
    0%   { transform: scale(1); }
    40%  { transform: scale(1.06) translateY(-1px); }
    100% { transform: scale(1); }
}
.book-card__link--etsy .stack-icon {
    display: inline-flex;
    flex-shrink: 0;
}

.book-card__link--etsy .stack-icon__layer {
    transition: transform 0.35s var(--ease-spring);
    transform-origin: center;
}

.book-card__link--etsy:hover .stack-icon__layer--top {
    animation: layer-up 0.45s var(--ease-spring) forwards;
}

.book-card__link--etsy:hover .stack-icon__layer--mid {
    animation: layer-mid 0.45s var(--ease-spring) forwards;
}

.book-card__link--etsy:hover .stack-icon__layer--bot {
    animation: layer-down 0.45s var(--ease-spring) forwards;
}

@keyframes layer-up {
    0%   { transform: translateY(0); }
    45%  { transform: translateY(-3px); }
    100% { transform: translateY(0); }
}

@keyframes layer-mid {
    0%   { transform: translateY(0) scaleX(1); }
    45%  { transform: translateY(0) scaleX(1.08); }
    100% { transform: translateY(0) scaleX(1); }
}

@keyframes layer-down {
    0%   { transform: translateY(0); }
    45%  { transform: translateY(3px); }
    100% { transform: translateY(0); }
}

/* Premium Badge */
.book-card__premium-badge {
    position: absolute;
    bottom: 0.75rem;
    left: 0.75rem;
    font-size: 0.6rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    padding: 0.3rem 0.7rem;
    border-radius: 100px;
    background: linear-gradient(135deg, #f1641e 0%, #ff8a50 100%);
    color: #fff;
    box-shadow: 0 2px 8px rgba(241, 100, 30, 0.3);
}

/* Download Badge */
.book-card__badge--download {
    background: rgba(255, 255, 255, 0.9);
    color: var(--color-text);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

/* Book Card Title Links */
.book-card__title a {
    color: inherit;
    transition: color var(--transition-fast);
}

.book-card__title a:hover {
    color: var(--color-accent);
}

/* Book Card Image Link */
a.book-card__image-wrap {
    display: block;
    cursor: pointer;
}

/* Etsy ghost button variant */
.btn--etsy {
    border-color: #f1641e;
    color: #f1641e;
}

.btn--etsy:hover {
    background: rgba(241, 100, 30, 0.06);
    border-color: #f1641e;
}

/* Books CTA flex layout */
.books__cta {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

/* Books CTA */
.books__cta {
    text-align: center;
    margin-top: 4rem;
}

/* --- About Section --- */
.about {
    padding: 8rem 2rem;
    background: var(--color-bg-warm);
    border-top: 1px solid var(--color-border);
}

.about__container {
    max-width: 1320px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 6rem;
    align-items: center;
}

.about__text {
    font-size: 1.05rem;
    color: var(--color-text-muted);
    line-height: 1.8;
    max-width: 58ch;
    margin-bottom: 1rem;
}

.about__features {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin-top: 2.5rem;
}

.about__feature {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
}

.about__feature-icon {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--color-accent-soft);
    color: var(--color-accent);
    display: flex;
    align-items: center;
    justify-content: center;
}

.about__feature-title {
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 0.2rem;
}

.about__feature-desc {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    line-height: 1.5;
}

/* About Visual - Double Bezel */
.about__visual {
    display: flex;
    justify-content: center;
}

.about__image-shell {
    padding: 1.5rem;
    background: rgba(0, 0, 0, 0.03);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    box-shadow: 0 20px 60px var(--color-shadow);
}

.about__image-inner {
    border-radius: calc(2.5rem - 1rem);
    background: var(--color-bg-dark);
    padding: 4rem;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: inset 0 1px 1px rgba(255, 255, 255, 0.05);
}

.about__logo-img {
    width: 240px;
    height: auto;
    opacity: 0.95;
}

/* --- CTA Band --- */
.cta-band {
    position: relative;
    padding: 6rem 2rem;
    overflow: hidden;
}

.cta-band__bg {
    position: absolute;
    inset: 0;
    background: var(--color-bg-dark);
}

.cta-band__gradient {
    position: absolute;
    top: -40%;
    right: -20%;
    width: 60vw;
    height: 60vw;
    max-width: 700px;
    max-height: 700px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(45, 138, 86, 0.15) 0%, transparent 70%);
    filter: blur(60px);
}

.cta-band__content {
    position: relative;
    z-index: 1;
    max-width: 680px;
    margin: 0 auto;
    text-align: center;
}

.cta-band__title {
    font-size: clamp(1.6rem, 3.5vw, 2.5rem);
    font-weight: 700;
    letter-spacing: -0.03em;
    line-height: 1.15;
    color: #fff;
    margin-bottom: 1rem;
}

.cta-band__desc {
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.6);
    line-height: 1.7;
    max-width: 52ch;
    margin: 0 auto 2rem;
}

.cta-band__actions {
    display: flex;
    justify-content: center;
    gap: 0.75rem;
    flex-wrap: wrap;
}

/* --- Footer --- */
.footer {
    background: var(--color-bg-dark);
    padding: 4rem 2rem 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.footer__inner {
    max-width: 1320px;
    margin: 0 auto;
}

.footer__top {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    padding-bottom: 3rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.footer__logo {
    height: 40px;
    width: auto;
    margin-bottom: 1rem;
}

.footer__tagline {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.4);
    line-height: 1.6;
}

.footer__columns {
    display: flex;
    gap: 4rem;
    justify-content: flex-end;
}

.footer__col {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
}

.footer__col-title {
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: rgba(255, 255, 255, 0.3);
    margin-bottom: 0.5rem;
}

.footer__link {
    font-size: 0.88rem;
    color: rgba(255, 255, 255, 0.6);
    transition: color var(--transition-fast);
}

.footer__link:hover {
    color: #fff;
}

.footer__bottom {
    padding-top: 2rem;
    text-align: center;
}

.footer__copy {
    font-size: 0.78rem;
    color: rgba(255, 255, 255, 0.25);
}

/* --- Reveal Animations --- */
[data-reveal] {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.7s var(--ease-out-expo), transform 0.7s var(--ease-out-expo);
}

[data-reveal].revealed {
    opacity: 1;
    transform: translateY(0);
}

/* --- Responsive --- */
@media (max-width: 1100px) {
    .books__grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 900px) {
    .hero__content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 3rem;
    }

    .hero__desc {
        margin-left: auto;
        margin-right: auto;
    }

    .hero__actions {
        justify-content: center;
    }

    .hero__book-stack {
        width: 280px;
        height: 360px;
    }

    .hero__book--1 { width: 180px; height: 250px; }
    .hero__book--2 { width: 160px; height: 225px; }
    .hero__book--3 { width: 160px; height: 225px; }

    .about__container {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

    .about__visual {
        order: -1;
    }

    .about__image-inner {
        padding: 3rem;
    }

    .about__logo-img {
        width: 180px;
    }

    .footer__top {
        grid-template-columns: 1fr;
        gap: 2.5rem;
    }

    .footer__columns {
        justify-content: flex-start;
    }

    .books__grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav__links {
        display: none;
    }

    .nav__burger {
        display: flex;
    }

    .hero {
        padding: 7rem 1.25rem 3rem;
    }

    .hero__title {
        font-size: clamp(2.2rem, 8vw, 3rem);
    }

    .stats__inner {
        flex-wrap: wrap;
        gap: 1.5rem;
    }

    .stats__divider {
        display: none;
    }

    .stats__item {
        flex: 0 0 calc(50% - 0.75rem);
    }

    .books {
        padding: 4rem 1.25rem 5rem;
    }

    .books__grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }

    .book-card__body {
        padding: 1rem 0.5rem 0.5rem;
    }

    .book-card__desc {
        display: none;
    }

    .book-card__title {
        font-size: 0.95rem;
    }

    .about {
        padding: 4rem 1.25rem;
    }

    .cta-band {
        padding: 4rem 1.25rem;
    }

    .footer {
        padding: 3rem 1.25rem 1.5rem;
    }

    .footer__columns {
        flex-direction: column;
        gap: 1.5rem;
    }
}

/* --- Logo Wordmark --- */
.nav__logo {
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

.nav__logo-img {
    height: 32px;
    width: auto;
    flex-shrink: 0;
}

.nav__logo-wordmark {
    font-family: var(--font-spartan);
    font-weight: 700;
    font-size: 1rem;
    letter-spacing: -0.02em;
    color: var(--color-text);
    white-space: nowrap;
    line-height: 1;
}

/* About logo lockup */
.about__logo-lockup {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.about__logo-img {
    width: 80px;
    height: auto;
    opacity: 0.9;
}

.about__logo-wordmark {
    font-family: var(--font-spartan);
    font-weight: 700;
    font-size: 1.2rem;
    letter-spacing: -0.02em;
    color: #fff;
    text-align: center;
    line-height: 1.2;
}

/* Footer logo lockup */
.footer__logo-lockup {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.footer__logo-img {
    height: 36px;
    width: auto;
    opacity: 0.85;
}

.footer__logo-wordmark {
    font-family: var(--font-spartan);
    font-weight: 700;
    font-size: 1rem;
    letter-spacing: -0.02em;
    color: rgba(255, 255, 255, 0.85);
    line-height: 1;
}

/* Premium tag */
.book-card__tag--premium {
    color: #f1641e;
    background: rgba(241, 100, 30, 0.1);
}

/* --- Local Store Section --- */
.local-store {
    padding: 6rem 2rem 8rem;
    background: var(--color-bg);
    border-top: 1px solid var(--color-border);
}

.local-store__container {
    max-width: 1320px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 5rem;
    align-items: center;
}

.local-store__text {
    font-size: 1.05rem;
    color: var(--color-text-muted);
    line-height: 1.8;
    max-width: 52ch;
    margin-bottom: 2rem;
}

.local-store__shop-info {
    margin-bottom: 2rem;
    padding: 1.25rem 1.5rem;
    background: var(--color-bg-warm);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
}

.local-store__shop-name {
    font-size: 1.15rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--color-text);
    margin-bottom: 0.2rem;
}

.local-store__shop-sub {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    margin-bottom: 1rem;
}

.local-store__address {
    font-style: normal;
    font-size: 0.88rem;
    color: var(--color-text-muted);
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
    line-height: 1.5;
}

.local-store__address svg {
    flex-shrink: 0;
    margin-top: 2px;
    color: var(--color-accent);
}

.local-store__map {
    display: flex;
    justify-content: center;
}

.local-store__map-shell {
    padding: 0.5rem;
    background: rgba(0, 0, 0, 0.02);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    box-shadow: 0 20px 60px var(--color-shadow);
    width: 100%;
}

.local-store__map-inner {
    border-radius: calc(2.5rem - 0.5rem);
    overflow: hidden;
    background: var(--color-bg-warm);
    height: 380px;
}

.local-store__map-inner iframe {
    width: 100%;
    height: 100%;
    display: block;
}

/* ── Google Maps DSGVO-Overlay ───────────────────────────────────── */
.maps-consent {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg-warm);
    border-radius: inherit;
    z-index: 2;
    padding: 2rem;
}

.maps-consent__inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 1rem;
    max-width: 320px;
}

.maps-consent__icon {
    color: var(--color-text-muted);
    opacity: 0.5;
}

.maps-consent__title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-text);
}

.maps-consent__text {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    line-height: 1.65;
}

.maps-consent__text strong {
    color: var(--color-text);
    font-weight: 600;
}

.maps-consent__btn {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    background: var(--color-accent);
    color: #fff;
    font-family: inherit;
    font-size: 0.9rem;
    font-weight: 600;
    padding: 0.7rem 1.5rem;
    border: none;
    border-radius: 100px;
    cursor: pointer;
    transition: background 0.2s ease, transform 0.2s ease;
}

.maps-consent__btn:hover {
    background: var(--color-accent-hover);
    transform: translateY(-1px);
}

.maps-consent__link {
    font-size: 0.78rem;
    color: var(--color-text-muted);
    text-decoration: underline;
    text-underline-offset: 2px;
    transition: color 0.2s ease;
}

.maps-consent__link:hover {
    color: var(--color-accent);
}

/* position:relative nötig damit das Overlay korrekt positioniert wird */
.local-store__map-inner {
    position: relative;
}

@media (max-width: 900px) {
    .local-store__container {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    .local-store__map-inner {
        height: 300px;
    }
}

@media (max-width: 768px) {
    .local-store {
        padding: 4rem 1.25rem 5rem;
    }
}

@media (max-width: 480px) {
    .books__grid {
        grid-template-columns: 1fr 1fr;
        gap: 0.75rem;
    }

    .book-card {
        padding: 0.35rem;
        border-radius: var(--radius-lg);
    }

    .book-card__image-shell {
        border-radius: calc(2rem - 0.35rem);
    }

    .book-card__image-wrap {
        border-radius: calc(2rem - 0.35rem);
    }

    .book-card__badge {
        font-size: 0.55rem;
        padding: 0.2rem 0.5rem;
    }

    .book-card__tag {
        font-size: 0.58rem;
    }

    .book-card__title {
        font-size: 0.85rem;
    }

    .book-card__subtitle {
        font-size: 0.72rem;
    }

    .book-card__links {
        margin-top: 0.6rem;
    }

    .book-card__link {
        font-size: 0.7rem;
        padding: 0.35rem 0.75rem;
    }

    .hero__book-stack {
        width: 240px;
        height: 300px;
    }

    .hero__book--1 { width: 155px; height: 215px; }
    .hero__book--2 { width: 140px; height: 195px; }
    .hero__book--3 { width: 140px; height: 195px; }

    .btn {
        font-size: 0.82rem;
        padding: 0.75rem 1.4rem;
    }

    .hero__actions {
        flex-direction: column;
        align-items: center;
    }

    .cta-band__actions {
        flex-direction: column;
        align-items: center;
    }
}