/* ==========================================================================
   a6c.dev - Botanical Field Journal
   Watercolor aesthetic, magazine-spread layout, burgundy-cream palette
   Cormorant Garamond + Nunito Sans | Bounce-enter reveals | SVG draw animation
   ========================================================================== */

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

:root {
    --primary-burgundy: #6B2D3E;
    --medium-burgundy: #8B4A5E;
    --dark-text: #5A3A3A;
    --body-text: #4A3F3A;
    --cream-bg: #F5EDE0;
    --light-cream: #FAF6F0;
    --sage-green: #6B8F71;
    --dusty-rose: #C4909A;
    --charcoal: #3A3235;
    --muted-brown: #7A6E66;

    --font-headline: 'Cormorant Garamond', 'Georgia', serif;
    --font-body: 'Nunito Sans', 'Helvetica Neue', sans-serif;

    --spread-gutter: 48px;
    --baseline: 24px;
    --divider-width: 2px;
}

html {
    scroll-behavior: smooth;
    background-color: var(--cream-bg);
}

body {
    font-family: var(--font-body);
    font-weight: 400;
    font-size: 17px;
    line-height: 1.75;
    color: var(--body-text);
    background-color: var(--cream-bg);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* --- Progress Bar --- */
#progress-bar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    z-index: 1000;
    background: transparent;
    overflow: hidden;
}

#progress-fill {
    width: 0%;
    height: 100%;
    background: linear-gradient(90deg, var(--medium-burgundy), var(--sage-green));
    filter: url(#watercolor-soft);
    transition: width 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
    will-change: width;
}

/* --- Navigation --- */
#top-nav {
    position: fixed;
    top: 8px;
    left: 0;
    right: 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 32px;
    z-index: 999;
    pointer-events: none;
}

.nav-domain {
    font-family: var(--font-body);
    font-weight: 300;
    font-size: 13px;
    color: var(--dark-text);
    opacity: 0.6;
    letter-spacing: 0.05em;
}

.nav-indicator {
    font-family: var(--font-body);
    font-weight: 300;
    font-size: 13px;
    color: var(--dark-text);
    opacity: 0.6;
    letter-spacing: 0.02em;
}

/* --- Spread Container --- */
#spread-container {
    scroll-snap-type: y mandatory;
    overflow-y: scroll;
    height: 100vh;
    scroll-behavior: smooth;
}

/* --- Spread Layout --- */
.spread {
    height: 100vh;
    display: flex;
    scroll-snap-align: start;
    position: relative;
    overflow: hidden;
}

.spread-primary {
    flex: 0 0 58%;
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.spread-secondary {
    flex: 0 0 42%;
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--light-cream);
}

.spread-divider {
    flex: 0 0 var(--divider-width);
    background-color: var(--medium-burgundy);
    opacity: 0.3;
    filter: url(#watercolor-soft);
    align-self: stretch;
}

/* Alternating spread direction */
.spread-odd {
    flex-direction: row;
}

.spread-even {
    flex-direction: row;
}

/* Gutter between spreads */
.spread + .spread::before {
    content: '';
    position: absolute;
    top: -24px;
    left: 0;
    right: 0;
    height: var(--spread-gutter);
    background-color: var(--cream-bg);
    z-index: 2;
}

/* --- Content Blocks --- */
.content-block {
    position: relative;
    z-index: 3;
    padding: calc(var(--baseline) * 3);
    max-width: 100%;
}

.spread-content {
    padding: calc(var(--baseline) * 4) calc(var(--baseline) * 3);
}

.secondary-content {
    padding: calc(var(--baseline) * 3) calc(var(--baseline) * 2);
}

/* --- Typography --- */
.spread-title {
    font-family: var(--font-headline);
    font-weight: 600;
    font-size: clamp(2rem, 5vw, 3.6rem);
    line-height: 1.15;
    letter-spacing: -0.02em;
    color: var(--dark-text);
    margin-bottom: calc(var(--baseline) * 1.5);
}

.secondary-title {
    font-size: clamp(1.6rem, 4vw, 2.8rem);
}

.spread-subtitle {
    font-family: var(--font-headline);
    font-weight: 400;
    font-style: italic;
    font-size: clamp(1.2rem, 3vw, 1.8rem);
    color: var(--medium-burgundy);
    margin-bottom: calc(var(--baseline) * 2);
}

.body-text {
    font-family: var(--font-body);
    font-weight: 400;
    font-size: 17px;
    line-height: 1.75;
    color: var(--body-text);
    margin-bottom: var(--baseline);
    max-width: 540px;
}

.body-text em {
    font-style: italic;
    color: var(--medium-burgundy);
}

.caption-text {
    font-family: var(--font-body);
    font-weight: 300;
    font-size: 13px;
    line-height: 1.6;
    color: var(--muted-brown);
    margin-bottom: calc(var(--baseline) * 0.75);
}

.caption-text em {
    font-family: var(--font-headline);
    font-weight: 400;
    font-style: italic;
    font-size: 14px;
}

.botanical-name {
    font-style: italic;
    color: var(--medium-burgundy);
    font-size: 14px;
    margin-bottom: calc(var(--baseline) * 0.5);
}

.botanical-name em {
    font-family: var(--font-headline);
    font-weight: 400;
    font-style: italic;
    font-size: 16px;
}

.marginalia {
    font-family: var(--font-body);
    font-weight: 300;
    font-size: 12px;
    line-height: 1.5;
    color: var(--charcoal);
    opacity: 0.6;
    margin-top: calc(var(--baseline) * 1.5);
    letter-spacing: 0.03em;
    text-transform: uppercase;
}

.annotation {
    font-family: var(--font-body);
    font-weight: 300;
    font-size: 13px;
    line-height: 1.6;
    color: var(--muted-brown);
    margin-top: calc(var(--baseline) * 1.5);
    text-align: center;
}

.annotation em {
    font-family: var(--font-headline);
    font-weight: 400;
    font-style: italic;
}

.accent-text {
    font-family: var(--font-headline);
    font-weight: 400;
    font-style: italic;
    font-size: clamp(1.2rem, 3vw, 1.8rem);
    color: var(--medium-burgundy);
    line-height: 1.5;
}

/* --- Drop Caps --- */
.drop-cap-block {
    position: relative;
    margin-bottom: calc(var(--baseline) * 1);
}

.drop-cap {
    font-family: var(--font-headline);
    font-weight: 600;
    font-size: clamp(4rem, 8vw, 7rem);
    line-height: 0.8;
    color: var(--primary-burgundy);
    float: left;
    margin-right: 12px;
    margin-top: 8px;
    opacity: 0.85;
}

/* --- Leaf Bullet Points --- */
.leaf-bullet-list {
    margin-top: calc(var(--baseline) * 1.5);
}

.leaf-bullet {
    display: inline-block;
    width: 10px;
    height: 10px;
    margin-right: 8px;
    position: relative;
    top: 1px;
}

.leaf-bullet::before {
    content: '';
    display: inline-block;
    width: 8px;
    height: 5px;
    background-color: var(--sage-green);
    border-radius: 0 50% 50% 0;
    transform: rotate(-15deg);
    opacity: 0.6;
}

.colophon-species {
    margin-top: calc(var(--baseline) * 1);
    margin-bottom: calc(var(--baseline) * 1);
}

.colophon-species .caption-text {
    margin-bottom: calc(var(--baseline) * 0.35);
}

/* --- Watercolor Washes --- */
.watercolor-wash {
    position: absolute;
    inset: 0;
    z-index: 1;
    pointer-events: none;
}

.wash-cream {
    background: linear-gradient(
        135deg,
        var(--cream-bg) 0%,
        #F2E8D8 30%,
        var(--cream-bg) 50%,
        #F0E5D5 70%,
        var(--cream-bg) 100%
    );
}

.wash-light {
    background: linear-gradient(
        160deg,
        var(--light-cream) 0%,
        #F8F3EB 40%,
        var(--light-cream) 60%,
        #F6F0E5 100%
    );
}

.wash-rose {
    background: radial-gradient(
        ellipse at 70% 80%,
        rgba(196, 144, 154, 0.12) 0%,
        transparent 60%
    );
    filter: url(#watercolor-filter);
}

.wash-rose-light {
    background: radial-gradient(
        ellipse at 40% 50%,
        rgba(196, 144, 154, 0.08) 0%,
        transparent 50%
    );
    filter: url(#watercolor-filter);
}

.wash-rose-full {
    background: radial-gradient(
        ellipse at 50% 40%,
        rgba(196, 144, 154, 0.15) 0%,
        rgba(196, 144, 154, 0.05) 40%,
        transparent 70%
    );
    filter: url(#watercolor-filter);
}

.wash-sage-light {
    background: radial-gradient(
        ellipse at 30% 60%,
        rgba(107, 143, 113, 0.08) 0%,
        transparent 50%
    );
    filter: url(#watercolor-filter);
}

.wash-sage-full {
    background: radial-gradient(
        ellipse at 60% 70%,
        rgba(107, 143, 113, 0.12) 0%,
        rgba(107, 143, 113, 0.04) 40%,
        transparent 70%
    );
    filter: url(#watercolor-filter);
}

/* --- Blueprint Overlays (architectural backgrounds at low opacity) --- */
.blueprint-overlay {
    position: absolute;
    inset: 0;
    z-index: 1;
    pointer-events: none;
    opacity: 0.06;
}

.blueprint-grid-1 {
    background:
        repeating-linear-gradient(
            0deg,
            transparent,
            transparent 47px,
            var(--dark-text) 47px,
            var(--dark-text) 48px
        ),
        repeating-linear-gradient(
            90deg,
            transparent,
            transparent 47px,
            var(--dark-text) 47px,
            var(--dark-text) 48px
        );
}

.blueprint-grid-2 {
    background:
        linear-gradient(0deg, var(--dark-text) 1px, transparent 1px) 0 0 / 100% 60px,
        linear-gradient(90deg, var(--dark-text) 1px, transparent 1px) 0 0 / 80px 100%;
    opacity: 0.04;
}

.blueprint-grid-3 {
    background:
        repeating-linear-gradient(
            90deg,
            transparent,
            transparent 95px,
            var(--dark-text) 95px,
            var(--dark-text) 96px
        ),
        repeating-linear-gradient(
            0deg,
            transparent,
            transparent 71px,
            var(--dark-text) 71px,
            var(--dark-text) 72px
        );
    opacity: 0.05;
}

.blueprint-grid-4 {
    background:
        radial-gradient(circle at 50% 50%, transparent 120px, var(--dark-text) 120px, var(--dark-text) 121px, transparent 121px),
        linear-gradient(0deg, var(--dark-text) 1px, transparent 1px) 0 0 / 100% 50px,
        linear-gradient(90deg, var(--dark-text) 1px, transparent 1px) 0 0 / 50px 100%;
    opacity: 0.04;
}

/* --- Watercolor Splatters --- */
.watercolor-splatter {
    position: absolute;
    z-index: 2;
    pointer-events: none;
    border-radius: 50%;
    filter: url(#watercolor-filter);
}

.splatter-sage {
    width: 200px;
    height: 180px;
    background: radial-gradient(
        ellipse,
        rgba(107, 143, 113, 0.18) 0%,
        rgba(107, 143, 113, 0.06) 50%,
        transparent 70%
    );
}

.splatter-rose {
    width: 180px;
    height: 160px;
    background: radial-gradient(
        ellipse,
        rgba(196, 144, 154, 0.2) 0%,
        rgba(196, 144, 154, 0.06) 50%,
        transparent 70%
    );
}

/* --- Botanical Illustrations --- */
.botanical-illustration {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: calc(var(--baseline) * 1.5);
    position: relative;
    cursor: default;
}

.botanical-svg {
    overflow: visible;
}

.large-botanical {
    width: 100%;
    max-width: 400px;
    height: auto;
}

.medium-botanical {
    width: 100%;
    max-width: 210px;
    height: auto;
}

.small-botanical {
    width: 100%;
    max-width: 150px;
    height: auto;
    margin: calc(var(--baseline) * 2) auto;
    display: block;
}

.vine-svg {
    max-width: 120px;
}

.vignette-svg {
    width: 100%;
    max-width: 150px;
    height: auto;
}

/* SVG draw paths */
.draw-path {
    stroke-dasharray: var(--path-length, 1000);
    stroke-dashoffset: var(--path-length, 1000);
    transition: stroke-dashoffset 1.2s ease-out;
}

.draw-path.drawn {
    stroke-dashoffset: 0;
}

/* Watercolor fills on SVGs */
.watercolor-fill {
    mix-blend-mode: multiply;
    transition: opacity 0.4s ease-out 1.2s;
}

.watercolor-fill.revealed {
    opacity: 0.25;
}

/* Falling petals get slightly higher opacity */
.falling-petal.revealed {
    opacity: 0.2;
}

/* --- Botanical Decorations --- */
.botanical-decoration {
    position: relative;
    margin: calc(var(--baseline) * 1.5) 0;
}

.vine-top-right {
    position: absolute;
    top: calc(var(--baseline) * 2);
    right: calc(var(--baseline) * 2);
    opacity: 0.6;
}

.vine-bottom {
    margin-top: calc(var(--baseline) * 2);
}

.leaf {
    mix-blend-mode: multiply;
}

.bloom-dot {
    mix-blend-mode: multiply;
}

/* --- Botanical Vignette --- */
.botanical-vignette {
    display: flex;
    justify-content: center;
    margin: calc(var(--baseline) * 1.5) 0;
}

/* --- Urban Vignettes --- */
.urban-vignette {
    margin-top: calc(var(--baseline) * 2);
    padding: calc(var(--baseline) * 1) 0;
    border-top: 1px solid rgba(90, 58, 58, 0.1);
}

.vignette-caption {
    font-family: var(--font-body);
    font-weight: 300;
    font-size: 11px;
    color: var(--charcoal);
    opacity: 0.5;
    margin-top: 8px;
    text-align: center;
}

/* --- Colophon --- */
.colophon {
    padding-top: calc(var(--baseline) * 2);
}

.colophon-title {
    font-family: var(--font-headline);
    font-weight: 600;
    font-size: 14px;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--dark-text);
    margin-bottom: var(--baseline);
}

.colophon-quote {
    margin-top: calc(var(--baseline) * 2);
    margin-bottom: calc(var(--baseline) * 1);
    padding-left: calc(var(--baseline) * 1);
    border-left: 2px solid var(--sage-green);
    display: block;
}

/* --- Bloom Effect on Hover --- */
.bloom-effect {
    position: absolute;
    width: 120px;
    height: 120px;
    border-radius: 50%;
    pointer-events: none;
    transform: translate(-50%, -50%);
    transition: opacity 0.4s ease-out;
    mix-blend-mode: multiply;
    z-index: 5;
}

/* --- Bounce-Enter Animation --- */
.bounce-enter {
    opacity: 0;
    transform: translateY(30px);
}

.bounce-enter.entered {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.6s cubic-bezier(0.34, 1.56, 0.64, 1),
                transform 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* Stagger delays at 120ms intervals */
.bounce-enter.delay-0 { transition-delay: 0s; }
.bounce-enter.delay-1 { transition-delay: 0.12s; }
.bounce-enter.delay-2 { transition-delay: 0.24s; }
.bounce-enter.delay-3 { transition-delay: 0.36s; }
.bounce-enter.delay-4 { transition-delay: 0.48s; }
.bounce-enter.delay-5 { transition-delay: 0.60s; }
.bounce-enter.delay-6 { transition-delay: 0.72s; }
.bounce-enter.delay-7 { transition-delay: 0.84s; }

/* --- Responsive: Below 768px --- */
@media (max-width: 768px) {
    .spread {
        flex-direction: column !important;
        height: auto;
        min-height: 100vh;
    }

    .spread-primary,
    .spread-secondary {
        flex: 1 1 auto;
        width: 100%;
        min-height: 50vh;
    }

    .spread-divider {
        flex: 0 0 2px;
        width: 100%;
        height: 2px;
    }

    .spread-content {
        padding: calc(var(--baseline) * 3) calc(var(--baseline) * 1.5);
    }

    .secondary-content {
        padding: calc(var(--baseline) * 2) calc(var(--baseline) * 1.5);
        border-left: 3px solid var(--sage-green);
        margin: 0 calc(var(--baseline) * 1.5);
    }

    .spread-title {
        font-size: clamp(1.8rem, 6vw, 2.8rem);
    }

    .drop-cap {
        font-size: clamp(3rem, 10vw, 5rem);
    }

    .body-text {
        font-size: 16px;
        max-width: 100%;
    }

    .large-botanical {
        max-width: 280px;
    }

    .medium-botanical {
        max-width: 180px;
    }

    .vine-top-right {
        top: var(--baseline);
        right: var(--baseline);
    }

    #top-nav {
        padding: 8px 16px;
    }

    .watercolor-splatter {
        display: none;
    }

    .blueprint-overlay {
        display: none;
    }
}

/* --- Below 480px --- */
@media (max-width: 480px) {
    .spread-content {
        padding: calc(var(--baseline) * 2) calc(var(--baseline) * 1);
    }

    .secondary-content {
        padding: calc(var(--baseline) * 1.5) calc(var(--baseline) * 1);
        margin: 0 calc(var(--baseline) * 1);
    }

    .spread-title {
        font-size: clamp(1.5rem, 7vw, 2.2rem);
    }

    .drop-cap {
        font-size: clamp(2.5rem, 12vw, 4rem);
    }

    .body-text {
        font-size: 15px;
    }

    .caption-text {
        font-size: 12px;
    }

    .large-botanical {
        max-width: 220px;
    }

    .medium-botanical {
        max-width: 150px;
    }

    .vine-top-right {
        display: none;
    }
}

/* --- Scrollbar Styling --- */
#spread-container::-webkit-scrollbar {
    width: 6px;
}

#spread-container::-webkit-scrollbar-track {
    background: var(--cream-bg);
}

#spread-container::-webkit-scrollbar-thumb {
    background-color: var(--medium-burgundy);
    opacity: 0.4;
    border-radius: 3px;
}

#spread-container {
    scrollbar-width: thin;
    scrollbar-color: var(--medium-burgundy) var(--cream-bg);
}

/* --- Selection --- */
::selection {
    background-color: rgba(196, 144, 154, 0.3);
    color: var(--dark-text);
}