/* =============================================================
   PPUZZL.party — Botanical Split-Screen Journal
   Palette:
     #f5ede0  warm parchment (background)
     #1a3a1a  deep forest (left panel base)
     #3d6b35  forest green (left panel top)
     #2d4a1e  dark forest (text on green)
     #6ea84f  mid green (accents, icons)
     #a8c898  soft sage (light accents)
     #e8d8c0  warm beige (card backgrounds)
     #d4c4a8  mid beige (borders, rules)
     #7a6a52  warm brown (secondary text)
     #c4622d  sienna (hover/accent warm)
   Fonts:
     Playfair Display — display headings
     Lora             — body text
     Space Mono       — specimen labels / monospace
   ============================================================= */

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

:root {
    --parchment: #f5ede0;
    --deep-forest: #1a3a1a;
    --forest: #3d6b35;
    --dark-forest: #2d4a1e;
    --bark: #3a3025;
    --mid-green: #6ea84f;
    --sage: #a8c898;
    --warm-beige: #e8d8c0;
    --mid-beige: #d4c4a8;
    --brown: #7a6a52;
    --sienna: #c4622d;

    --font-display: 'Playfair Display', Georgia, 'Times New Roman', serif;
    --font-body: 'Lora', Georgia, serif;
    --font-mono: 'Space Mono', 'Courier New', monospace;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    background: var(--parchment);
    font-family: var(--font-body);
    color: var(--dark-forest);
    line-height: 1.65;
    overflow-x: hidden;
}

/* ===== Split Screen Layout ===== */
.split-screen {
    display: grid;
    grid-template-columns: 45vw 1fr;
    min-height: 100vh;
    align-items: start;
}

/* ===== LEFT: Specimen Panel ===== */
.specimen-panel {
    position: sticky;
    top: 0;
    height: 100vh;
    background: linear-gradient(160deg, #1a3a1a 0%, #3d6b35 60%, #3a3025 100%);
    display: flex;
    flex-direction: column;
    align-items: stretch;
    overflow: hidden;
}

.specimen-panel__inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    padding: 56px 40px 40px;
    position: relative;
}

/* Botanical SVG icon container */
.specimen-icon {
    width: 56%;
    max-width: 260px;
    min-height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 32px;
    transition: opacity 0.5s ease, transform 0.5s ease;
}

.specimen-icon svg {
    width: 100%;
    height: auto;
    opacity: 0.92;
    filter: drop-shadow(0 4px 16px rgba(0,0,0,0.25));
}

.specimen-icon.is-swapping {
    opacity: 0;
    transform: scale(0.92) translateY(8px);
}

/* Specimen metadata label */
.specimen-meta {
    text-align: center;
    width: 100%;
    max-width: 260px;
}

.specimen-meta__tag {
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--sage);
    opacity: 0.7;
    margin-bottom: 8px;
}

.specimen-meta__genus {
    font-family: var(--font-mono);
    font-size: 15px;
    font-style: italic;
    color: var(--sage);
    letter-spacing: 0.04em;
    min-height: 22px;
    margin-bottom: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 2px;
}

.typewriter-cursor {
    display: inline-block;
    animation: blink 1s step-end infinite;
    color: var(--mid-green);
    font-style: normal;
    margin-left: 1px;
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0; }
}

.specimen-meta__family {
    font-family: var(--font-mono);
    font-size: 9px;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--sage);
    opacity: 0.5;
    margin-bottom: 4px;
}

.specimen-meta__discovered {
    font-family: var(--font-mono);
    font-size: 9px;
    color: var(--sage);
    opacity: 0.4;
    letter-spacing: 0.06em;
}

/* Vine decoration */
.specimen-panel__vine {
    position: absolute;
    right: 18px;
    top: 50%;
    transform: translateY(-50%);
    width: 44px;
    height: 200px;
    opacity: 0.6;
    pointer-events: none;
}

/* Navigation dots */
.specimen-nav {
    position: absolute;
    bottom: 36px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    align-items: center;
}

.specimen-nav__dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--sage);
    border: none;
    cursor: pointer;
    opacity: 0.35;
    transition: opacity 0.3s ease, transform 0.3s ease, background 0.3s ease;
    padding: 0;
}

.specimen-nav__dot.is-active {
    opacity: 1;
    transform: scale(1.4);
    background: var(--mid-green);
}

.specimen-nav__dot:hover {
    opacity: 0.7;
}

/* ===== RIGHT: Journal Content ===== */
.journal-content {
    background: var(--parchment);
}

/* ===== Journal Sections ===== */
.journal-section {
    padding: 80px 64px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    position: relative;
}

.journal-section__inner {
    max-width: 540px;
}

/* Section tag */
.section-tag {
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--sienna);
    margin-bottom: 20px;
    opacity: 0.8;
}

/* ===== HERO section ===== */
.journal-section--hero {
    background: var(--parchment);
    padding-top: 100px;
    padding-bottom: 60px;
    min-height: 100vh;
    justify-content: center;
}

.hero__title {
    font-family: var(--font-display);
    font-size: clamp(52px, 6vw, 88px);
    font-weight: 700;
    color: var(--dark-forest);
    line-height: 0.95;
    letter-spacing: -0.02em;
    margin-bottom: 24px;
}

.hero__title-line {
    display: block;
}

.hero__title-accent {
    color: var(--mid-green);
}

.hero__title-dot {
    color: var(--sienna);
}

.hero__tagline {
    font-family: var(--font-display);
    font-size: clamp(17px, 2vw, 21px);
    font-weight: 400;
    font-style: italic;
    color: var(--brown);
    margin-bottom: 24px;
    line-height: 1.45;
}

.hero__body {
    font-family: var(--font-body);
    font-size: 16px;
    color: var(--brown);
    line-height: 1.7;
    margin-bottom: 40px;
    max-width: 440px;
}

.hero__cta {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--parchment);
    background: var(--dark-forest);
    padding: 14px 32px;
    text-decoration: none;
    border: 1px solid var(--dark-forest);
    transition: background 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

.hero__cta:hover {
    background: var(--forest);
    border-color: var(--forest);
}

/* ===== Wave Dividers ===== */
.wave-divider {
    width: 100%;
    overflow: hidden;
    line-height: 0;
    height: 80px;
    position: relative;
}

.wave-divider svg {
    display: block;
    width: 100%;
    height: 80px;
}

/* Color variations for each divider */
.wave-divider--1 .wave-layer--back { fill: var(--warm-beige); opacity: 0.4; }
.wave-divider--1 .wave-layer--mid  { fill: var(--warm-beige); opacity: 0.6; }
.wave-divider--1 .wave-layer--front{ fill: var(--warm-beige); }

.wave-divider--2 .wave-layer--back { fill: var(--mid-beige); opacity: 0.4; }
.wave-divider--2 .wave-layer--mid  { fill: var(--mid-beige); opacity: 0.6; }
.wave-divider--2 .wave-layer--front{ fill: var(--mid-beige); }

.wave-divider--3 .wave-layer--back { fill: var(--warm-beige); opacity: 0.4; }
.wave-divider--3 .wave-layer--mid  { fill: var(--warm-beige); opacity: 0.6; }
.wave-divider--3 .wave-layer--front{ fill: var(--warm-beige); }

.wave-divider--4 .wave-layer--back { fill: var(--mid-beige); opacity: 0.4; }
.wave-divider--4 .wave-layer--mid  { fill: var(--mid-beige); opacity: 0.6; }
.wave-divider--4 .wave-layer--front{ fill: var(--mid-beige); }

.wave-divider--5 .wave-layer--back { fill: var(--warm-beige); opacity: 0.4; }
.wave-divider--5 .wave-layer--mid  { fill: var(--warm-beige); opacity: 0.6; }
.wave-divider--5 .wave-layer--front{ fill: var(--warm-beige); }

/* Wave animations — three layers drift independently */
.wave-layer--back {
    animation: waveBack 12s ease-in-out infinite alternate;
    transform-origin: center;
}
.wave-layer--mid {
    animation: waveMid 9s ease-in-out infinite alternate;
    transform-origin: center;
}
.wave-layer--front {
    animation: waveFront 7s ease-in-out infinite alternate;
    transform-origin: center;
}

@keyframes waveBack {
    from { transform: translateX(0); }
    to   { transform: translateX(-3%); }
}
@keyframes waveMid {
    from { transform: translateX(0); }
    to   { transform: translateX(4%); }
}
@keyframes waveFront {
    from { transform: translateX(0); }
    to   { transform: translateX(-2%); }
}

/* ===== ABOUT section ===== */
.journal-section--about {
    background: var(--warm-beige);
}

.section-heading {
    font-family: var(--font-display);
    font-size: clamp(32px, 3.5vw, 52px);
    font-weight: 700;
    color: var(--dark-forest);
    margin-bottom: 20px;
    line-height: 1.15;
}

.section-body {
    font-family: var(--font-body);
    font-size: 16px;
    color: var(--brown);
    line-height: 1.75;
    margin-bottom: 36px;
    max-width: 480px;
}

/* Feature cards */
.feature-cards {
    display: grid;
    grid-template-columns: 1fr;
    gap: 16px;
    margin-top: 8px;
}

.feature-card {
    background: var(--parchment);
    border: 1px solid var(--mid-beige);
    padding: 24px;
    display: grid;
    grid-template-columns: 56px 1fr;
    grid-template-rows: auto auto;
    gap: 4px 16px;
    align-items: start;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.5s ease, transform 0.5s ease;
}

.feature-card.is-visible {
    opacity: 1;
    transform: translateY(0);
}

.feature-card__icon {
    grid-row: 1 / 3;
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.feature-card__icon svg {
    width: 48px;
    height: 48px;
}

.feature-card__title {
    font-family: var(--font-display);
    font-size: 17px;
    font-weight: 700;
    color: var(--dark-forest);
    align-self: end;
}

.feature-card__body {
    font-family: var(--font-body);
    font-size: 14px;
    color: var(--brown);
    line-height: 1.55;
}

/* ===== HOW-TO section ===== */
.journal-section--howto {
    background: var(--mid-beige);
}

.steps-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0;
    border-left: 1.5px solid var(--mid-green);
    margin-left: 16px;
    padding-left: 0;
}

.step-item {
    display: grid;
    grid-template-columns: 48px 1fr;
    gap: 0 20px;
    padding: 20px 0 20px 0;
    position: relative;
    opacity: 0;
    transform: translateX(-16px);
    transition: opacity 0.5s ease, transform 0.5s ease;
}

.step-item.is-visible {
    opacity: 1;
    transform: translateX(0);
}

.step-item__number {
    font-family: var(--font-mono);
    font-size: 11px;
    font-weight: 700;
    color: var(--parchment);
    background: var(--forest);
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    margin-left: -17px;
    flex-shrink: 0;
    letter-spacing: 0.05em;
}

.step-item__content {
    padding-top: 4px;
}

.step-item__title {
    font-family: var(--font-display);
    font-size: 17px;
    font-weight: 700;
    color: var(--dark-forest);
    margin-bottom: 6px;
}

.step-item__body {
    font-family: var(--font-body);
    font-size: 14px;
    color: var(--brown);
    line-height: 1.6;
}

/* ===== COLLECTION section ===== */
.journal-section--collection {
    background: var(--warm-beige);
}

.taxonomy-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1px;
    background: var(--mid-beige);
    border: 1px solid var(--mid-beige);
    margin-top: 8px;
}

.taxon-card {
    background: var(--parchment);
    padding: 20px;
    transition: background 0.3s ease;
    opacity: 0;
    transform: scale(0.97);
    transition: opacity 0.45s ease, transform 0.45s ease, background 0.3s ease;
}

.taxon-card.is-visible {
    opacity: 1;
    transform: scale(1);
}

.taxon-card:hover {
    background: var(--warm-beige);
}

.taxon-card__number {
    font-family: var(--font-mono);
    font-size: 9px;
    color: var(--mid-green);
    letter-spacing: 0.15em;
    margin-bottom: 6px;
    opacity: 0.8;
}

.taxon-card__name {
    font-family: var(--font-display);
    font-size: 16px;
    font-weight: 700;
    color: var(--dark-forest);
    margin-bottom: 2px;
}

.taxon-card__latin {
    font-family: var(--font-mono);
    font-size: 10px;
    font-style: italic;
    color: var(--brown);
    margin-bottom: 8px;
    opacity: 0.7;
}

.taxon-card__desc {
    font-family: var(--font-body);
    font-size: 13px;
    color: var(--brown);
    line-height: 1.5;
}

/* ===== COMMUNITY section ===== */
.journal-section--community {
    background: var(--mid-beige);
}

.testimonials {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-top: 8px;
}

.testimonial-card {
    border-left: 3px solid var(--mid-green);
    padding: 16px 20px;
    background: var(--parchment);
    opacity: 0;
    transform: translateX(-12px);
    transition: opacity 0.5s ease, transform 0.5s ease;
}

.testimonial-card.is-visible {
    opacity: 1;
    transform: translateX(0);
}

.testimonial-card__text {
    font-family: var(--font-body);
    font-size: 15px;
    font-style: italic;
    color: var(--dark-forest);
    line-height: 1.65;
    margin-bottom: 10px;
}

.testimonial-card__cite {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--brown);
    letter-spacing: 0.06em;
    font-style: normal;
}

/* ===== NEWSLETTER section ===== */
.journal-section--newsletter {
    background: var(--warm-beige);
}

.newsletter-ornament {
    margin-bottom: 28px;
}

.newsletter-ornament svg {
    width: 200px;
    height: 40px;
}

.newsletter-form {
    margin-bottom: 16px;
}

.newsletter-form__row {
    display: flex;
    gap: 0;
    max-width: 480px;
}

.newsletter-form__input {
    flex: 1;
    font-family: var(--font-mono);
    font-size: 13px;
    color: var(--dark-forest);
    background: var(--parchment);
    border: 1.5px solid var(--mid-beige);
    border-right: none;
    padding: 14px 18px;
    outline: none;
    transition: border-color 0.3s ease;
}

.newsletter-form__input:focus {
    border-color: var(--forest);
}

.newsletter-form__input::placeholder {
    color: var(--mid-beige);
    opacity: 1;
}

.newsletter-form__btn {
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--parchment);
    background: var(--forest);
    border: 1.5px solid var(--forest);
    padding: 14px 22px;
    cursor: pointer;
    white-space: nowrap;
    transition: background 0.3s ease;
}

.newsletter-form__btn:hover {
    background: var(--dark-forest);
    border-color: var(--dark-forest);
}

.newsletter-form__note {
    font-family: var(--font-body);
    font-size: 14px;
    font-style: italic;
    color: var(--forest);
    margin-top: 12px;
    padding: 12px 0;
}

.newsletter-fine {
    font-family: var(--font-mono);
    font-size: 9px;
    color: var(--brown);
    opacity: 0.55;
    letter-spacing: 0.08em;
    line-height: 1.6;
}

/* ===== Footer ===== */
.site-footer {
    background: var(--dark-forest);
    padding: 48px 64px;
}

.site-footer__inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
    text-align: center;
}

.site-footer__brand {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.site-footer__name {
    font-family: var(--font-display);
    font-size: 22px;
    font-weight: 700;
    color: var(--sage);
    letter-spacing: -0.01em;
}

.site-footer__tagline {
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--sage);
    opacity: 0.5;
}

.site-footer__rule {
    opacity: 0.6;
}

.site-footer__rule svg {
    width: 200px;
    height: 16px;
}

.site-footer__copy {
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: 0.1em;
    color: var(--sage);
    opacity: 0.4;
}

/* ===== Section background alternates ===== */
.journal-section--about      { background: var(--warm-beige); }
.journal-section--howto      { background: var(--mid-beige); }
.journal-section--collection { background: var(--warm-beige); }
.journal-section--community  { background: var(--mid-beige); }
.journal-section--newsletter { background: var(--parchment); }

/* ===== Responsive ===== */
@media (max-width: 900px) {
    .split-screen {
        grid-template-columns: 1fr;
    }

    .specimen-panel {
        position: relative;
        height: auto;
        min-height: 320px;
    }

    .specimen-panel__inner {
        padding: 40px 32px 32px;
        flex-direction: row;
        justify-content: flex-start;
        gap: 32px;
    }

    .specimen-icon {
        width: 100px;
        min-height: 100px;
        margin-bottom: 0;
        flex-shrink: 0;
    }

    .specimen-panel__vine {
        display: none;
    }

    .specimen-nav {
        bottom: 16px;
    }

    .journal-section {
        padding: 60px 32px;
    }

    .taxonomy-grid {
        grid-template-columns: 1fr;
    }

    .newsletter-form__row {
        flex-direction: column;
    }

    .newsletter-form__input {
        border-right: 1.5px solid var(--mid-beige);
        border-bottom: none;
    }

    .newsletter-form__btn {
        border-top: none;
    }
}

@media (max-width: 540px) {
    .journal-section {
        padding: 48px 22px;
    }

    .site-footer {
        padding: 36px 22px;
    }

    .hero__title {
        font-size: clamp(44px, 12vw, 64px);
    }

    .feature-card {
        grid-template-columns: 1fr;
    }

    .feature-card__icon {
        grid-row: auto;
        margin-bottom: 8px;
    }
}