/* ============================================
   BBATTL.com - Forgotten Battles Field Journal
   ============================================ */

/* CSS Custom Properties - Palette from DESIGN.md */
:root {
    --deep-background: #1C1208;
    --parchment-base: #E8D5B0;
    --parchment-shadow: #C4A872;
    --primary-ink: #3D2B1F;
    --accent-star: #D4A84B;
    --highlight-glow: #E8C86A;
    --celestial-tint: #8B9EAE;
    --faded-annotation: #9E7B6B;
    --pixel-grid: #6B5B4F;
    --star-field-dots: #D9CFC2;

    --timeline-x: 38.2%;
    --content-max-width: 520px;
    --chapter-padding: 120px;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: var(--deep-background);
}
::-webkit-scrollbar-thumb {
    background: var(--parchment-shadow);
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--accent-star);
}
* {
    scrollbar-width: thin;
    scrollbar-color: var(--parchment-shadow) var(--deep-background);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    background-color: var(--deep-background);
    color: var(--parchment-base);
    font-family: 'Homemade Apple', cursive;
    line-height: 1.85;
    overflow-x: hidden;
    position: relative;
    min-height: 100vh;
}

/* ============================================
   Parallax Star Field
   ============================================ */
.star-field {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
    overflow: hidden;
}

.star-layer {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 300%;
    will-change: transform;
}

.star-layer-1 {
    background-image:
        radial-gradient(1px 1px at 10% 15%, var(--star-field-dots) 50%, transparent 50%),
        radial-gradient(1px 1px at 25% 35%, var(--star-field-dots) 50%, transparent 50%),
        radial-gradient(1.5px 1.5px at 45% 8%, var(--star-field-dots) 50%, transparent 50%),
        radial-gradient(1px 1px at 60% 42%, var(--star-field-dots) 50%, transparent 50%),
        radial-gradient(1px 1px at 78% 22%, var(--star-field-dots) 50%, transparent 50%),
        radial-gradient(1.5px 1.5px at 90% 55%, var(--star-field-dots) 50%, transparent 50%),
        radial-gradient(1px 1px at 15% 68%, var(--star-field-dots) 50%, transparent 50%),
        radial-gradient(1px 1px at 35% 82%, var(--star-field-dots) 50%, transparent 50%),
        radial-gradient(1px 1px at 55% 75%, var(--star-field-dots) 50%, transparent 50%),
        radial-gradient(1.5px 1.5px at 72% 88%, var(--star-field-dots) 50%, transparent 50%),
        radial-gradient(1px 1px at 88% 72%, var(--star-field-dots) 50%, transparent 50%),
        radial-gradient(1px 1px at 5% 48%, var(--star-field-dots) 50%, transparent 50%),
        radial-gradient(1px 1px at 42% 58%, var(--star-field-dots) 50%, transparent 50%),
        radial-gradient(1px 1px at 68% 12%, var(--star-field-dots) 50%, transparent 50%),
        radial-gradient(1px 1px at 95% 38%, var(--star-field-dots) 50%, transparent 50%);
    opacity: 0.6;
}

.star-layer-2 {
    background-image:
        radial-gradient(1px 1px at 8% 28%, var(--star-field-dots) 50%, transparent 50%),
        radial-gradient(2px 2px at 22% 52%, var(--star-field-dots) 50%, transparent 50%),
        radial-gradient(1px 1px at 38% 18%, var(--star-field-dots) 50%, transparent 50%),
        radial-gradient(1px 1px at 52% 65%, var(--star-field-dots) 50%, transparent 50%),
        radial-gradient(1.5px 1.5px at 68% 35%, var(--star-field-dots) 50%, transparent 50%),
        radial-gradient(1px 1px at 82% 48%, var(--star-field-dots) 50%, transparent 50%),
        radial-gradient(1px 1px at 18% 85%, var(--star-field-dots) 50%, transparent 50%),
        radial-gradient(2px 2px at 48% 92%, var(--star-field-dots) 50%, transparent 50%),
        radial-gradient(1px 1px at 75% 78%, var(--star-field-dots) 50%, transparent 50%),
        radial-gradient(1px 1px at 92% 15%, var(--star-field-dots) 50%, transparent 50%),
        radial-gradient(1px 1px at 32% 42%, var(--star-field-dots) 50%, transparent 50%),
        radial-gradient(1.5px 1.5px at 62% 8%, var(--star-field-dots) 50%, transparent 50%);
    opacity: 0.4;
}

.star-layer-3 {
    background-image:
        radial-gradient(1.5px 1.5px at 12% 42%, var(--celestial-tint) 50%, transparent 50%),
        radial-gradient(1px 1px at 30% 15%, var(--celestial-tint) 50%, transparent 50%),
        radial-gradient(2px 2px at 55% 32%, var(--star-field-dots) 50%, transparent 50%),
        radial-gradient(1px 1px at 72% 58%, var(--celestial-tint) 50%, transparent 50%),
        radial-gradient(1.5px 1.5px at 88% 25%, var(--star-field-dots) 50%, transparent 50%),
        radial-gradient(1px 1px at 42% 72%, var(--celestial-tint) 50%, transparent 50%),
        radial-gradient(1px 1px at 65% 88%, var(--star-field-dots) 50%, transparent 50%),
        radial-gradient(2px 2px at 20% 62%, var(--star-field-dots) 50%, transparent 50%),
        radial-gradient(1px 1px at 85% 82%, var(--celestial-tint) 50%, transparent 50%);
    opacity: 0.3;
}

/* ============================================
   Constellation Navigation
   ============================================ */
.constellation-nav {
    position: fixed;
    top: 20px;
    right: 20px;
    width: 180px;
    height: 180px;
    z-index: 100;
    background: rgba(28, 18, 8, 0.75);
    border: 1px solid var(--pixel-grid);
    border-radius: 4px;
    padding: 8px;
    opacity: 0;
    transition: opacity 0.6s ease;
}

.constellation-nav.visible {
    opacity: 1;
}

.constellation-svg {
    width: 100%;
    height: 100%;
}

.constellation-line {
    stroke: var(--pixel-grid);
    stroke-width: 1;
    stroke-dasharray: 3 3;
    opacity: 0.5;
}

.star-dot {
    fill: var(--pixel-grid);
    cursor: pointer;
    transition: fill 0.4s ease, r 0.3s ease;
}

.star-dot:hover {
    fill: var(--highlight-glow);
}

.constellation-star.active .star-dot {
    fill: var(--highlight-glow);
    r: 7;
}

.star-label {
    fill: var(--pixel-grid);
    font-family: 'Press Start 2P', monospace;
    font-size: 5px;
    text-anchor: middle;
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
}

.constellation-star:hover .star-label {
    opacity: 1;
}

.constellation-star.active .star-label {
    opacity: 1;
    fill: var(--highlight-glow);
}

/* ============================================
   Opening Section
   ============================================ */
.opening-section {
    position: relative;
    z-index: 1;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
}

.journal-book {
    text-align: center;
    opacity: 0;
    animation: journalFadeIn 1s ease 0.5s forwards;
}

.journal-svg {
    image-rendering: pixelated;
    image-rendering: crisp-edges;
    filter: drop-shadow(0 4px 12px rgba(28, 18, 8, 0.8));
    transition: transform 0.6s ease, opacity 0.6s ease;
}

.journal-book.opening .journal-svg {
    transform: scale(1.2) rotateY(-15deg);
    opacity: 0.6;
}

.journal-book.opened .journal-svg {
    transform: scale(0.8) translateY(-80px);
    opacity: 0;
}

.journal-hint {
    font-family: 'Caveat', cursive;
    font-size: 18px;
    color: var(--faded-annotation);
    margin-top: 24px;
    opacity: 0;
    animation: hintFadeIn 1s ease 1.5s forwards;
}

@keyframes journalFadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes hintFadeIn {
    from { opacity: 0; }
    to { opacity: 0.7; }
}

/* ============================================
   Timeline
   ============================================ */
.timeline {
    position: relative;
    z-index: 1;
    padding: 80px 0 160px;
}

.timeline-spine {
    position: absolute;
    left: var(--timeline-x);
    top: 0;
    bottom: 0;
    width: 2px;
    background-image: repeating-linear-gradient(
        to bottom,
        var(--pixel-grid) 0px,
        var(--pixel-grid) 6px,
        transparent 6px,
        transparent 14px
    );
    opacity: 0.5;
}

/* Tick marks on spine */
.timeline-spine::after {
    content: '';
    position: absolute;
    top: 0;
    left: -3px;
    width: 8px;
    height: 100%;
    background-image: repeating-linear-gradient(
        to bottom,
        transparent 0px,
        transparent 36px,
        var(--pixel-grid) 36px,
        var(--pixel-grid) 38px,
        transparent 38px,
        transparent 40px
    );
    opacity: 0.3;
}

/* ============================================
   Timeline Chapter
   ============================================ */
.timeline-chapter {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: var(--chapter-padding) 0;
}

/* Timeline Star Node */
.timeline-star {
    position: absolute;
    left: var(--timeline-x);
    top: 50%;
    transform: translate(-50%, -50%);
    z-index: 5;
    transition: transform 0.4s ease;
}

.star-icon {
    image-rendering: pixelated;
    image-rendering: crisp-edges;
}

.star-poly {
    transition: fill 0.4s ease;
}

.timeline-chapter.in-view .star-poly {
    fill: var(--accent-star);
}

.timeline-chapter.in-view .timeline-star {
    animation: starPulse 0.4s ease;
}

@keyframes starPulse {
    0% { transform: translate(-50%, -50%) scale(1); }
    50% { transform: translate(-50%, -50%) scale(1.3); }
    100% { transform: translate(-50%, -50%) scale(1); }
}

/* ============================================
   Timeline Content / Parchment Cards
   ============================================ */
.timeline-content {
    max-width: var(--content-max-width);
    width: 100%;
    /* Blur-focus entrance animation */
    filter: blur(4px);
    opacity: 0.4;
    transition: filter 0.6s ease-out, opacity 0.6s ease-out, transform 0.6s ease-out;
    transform: rotate(-1deg) translateY(30px);
}

.timeline-content.left {
    margin-left: calc(var(--timeline-x) - var(--content-max-width) - 60px);
    margin-right: auto;
}

.timeline-content.right {
    margin-left: calc(var(--timeline-x) + 60px);
    margin-right: auto;
}

.timeline-chapter.in-view .timeline-content {
    filter: blur(0);
    opacity: 1;
    transform: rotate(0deg) translateY(0);
}

/* Parchment Card */
.parchment-card {
    background: var(--parchment-base);
    color: var(--primary-ink);
    padding: 40px 36px;
    position: relative;
    clip-path: polygon(
        0% 2%, 3% 0%, 8% 1%, 15% 0%, 22% 1.5%, 30% 0%, 38% 0.5%, 45% 0%, 52% 1%, 60% 0%, 68% 0.8%, 75% 0%, 82% 1.2%, 90% 0%, 95% 0.5%, 100% 2%,
        100% 15%, 99.5% 30%, 100% 45%, 99.2% 60%, 100% 75%, 99.5% 88%, 100% 98%,
        97% 100%, 90% 99%, 82% 100%, 75% 99.5%, 68% 100%, 60% 99%, 52% 100%, 45% 99.2%, 38% 100%, 30% 99.5%, 22% 100%, 15% 99%, 8% 100%, 3% 99%, 0% 98%,
        0.5% 85%, 0% 72%, 0.8% 58%, 0% 45%, 0.5% 32%, 0% 18%
    );
    box-shadow: 0 8px 32px rgba(28, 18, 8, 0.6);
}

/* Parchment noise texture overlay */
.parchment-noise {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    opacity: 0.04;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' 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-size: 100px 100px;
    pointer-events: none;
}

/* Chapter Date */
.chapter-date {
    font-family: 'Press Start 2P', monospace;
    font-size: 10px;
    color: var(--pixel-grid);
    letter-spacing: 0.05em;
    display: block;
    margin-bottom: 16px;
}

/* Isometric Icon */
.isometric-icon {
    margin-bottom: 12px;
    display: inline-block;
}

.iso-icon-svg {
    image-rendering: pixelated;
    image-rendering: crisp-edges;
}

.timeline-chapter.in-view .isometric-icon {
    animation: iconBob 3s ease-in-out infinite;
}

@keyframes iconBob {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-2px); }
}

/* Entry Title */
.entry-title {
    font-family: 'Caveat', cursive;
    font-size: 36px;
    font-weight: 600;
    color: var(--primary-ink);
    letter-spacing: 0.02em;
    margin-bottom: 16px;
    line-height: 1.2;
}

/* Entry Body */
.entry-body {
    font-family: 'Homemade Apple', cursive;
    font-size: 16px;
    color: var(--primary-ink);
    line-height: 1.85;
    margin-bottom: 16px;
}

/* Entry Annotation */
.entry-annotation {
    font-family: 'Caveat', cursive;
    font-size: 14px;
    color: var(--faded-annotation);
    font-style: italic;
    transform: rotate(-1.5deg);
    display: inline-block;
    margin-top: 8px;
    line-height: 1.5;
}

/* ============================================
   Closing Section
   ============================================ */
.closing-section {
    position: relative;
    z-index: 1;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
}

.journal-closing {
    text-align: center;
    opacity: 0;
    transition: opacity 1s ease;
}

.journal-closing.visible {
    opacity: 1;
}

.closing-text {
    font-family: 'Caveat', cursive;
    font-size: 24px;
    color: var(--faded-annotation);
    margin-top: 24px;
    opacity: 0;
    transition: opacity 1s ease 0.5s;
}

.journal-closing.visible .closing-text {
    opacity: 0.8;
}

/* Shooting Star */
.shooting-star {
    position: fixed;
    top: -10px;
    left: -10px;
    width: 4px;
    height: 4px;
    background: var(--highlight-glow);
    border-radius: 50%;
    opacity: 0;
    z-index: 200;
    pointer-events: none;
    box-shadow: 0 0 6px var(--highlight-glow), 0 0 12px var(--accent-star);
}

.shooting-star.active {
    animation: shootingStar 2s ease-out forwards;
}

@keyframes shootingStar {
    0% {
        opacity: 1;
        top: 15%;
        left: 10%;
        box-shadow: 0 0 6px var(--highlight-glow), 0 0 12px var(--accent-star);
    }
    20% {
        opacity: 1;
    }
    100% {
        opacity: 0;
        top: 75%;
        left: 90%;
        box-shadow: 0 0 2px var(--highlight-glow), 0 0 4px var(--accent-star);
    }
}

/* Shooting star trail */
.shooting-star.active::after {
    content: '';
    position: absolute;
    top: 50%;
    right: 100%;
    width: 60px;
    height: 1px;
    background: linear-gradient(to left, var(--highlight-glow), transparent);
    transform: translateY(-50%);
}

/* ============================================
   Flower Divider
   ============================================ */
.flower-divider {
    position: relative;
    z-index: 1;
    text-align: center;
    padding: 40px 0 80px;
}

.flower-svg {
    image-rendering: pixelated;
    image-rendering: crisp-edges;
    opacity: 0.5;
}

/* ============================================
   Mobile Responsive
   ============================================ */
@media (max-width: 900px) {
    :root {
        --timeline-x: 15%;
        --content-max-width: 70vw;
    }

    .timeline-content.left,
    .timeline-content.right {
        margin-left: calc(var(--timeline-x) + 40px);
        margin-right: 20px;
    }

    .constellation-nav {
        top: auto;
        bottom: 0;
        right: 0;
        left: 0;
        width: 100%;
        height: 80px;
        border-radius: 12px 12px 0 0;
        padding: 8px 16px;
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .constellation-svg {
        width: auto;
        height: 60px;
    }

    .entry-title {
        font-size: 28px;
    }

    .entry-body {
        font-size: 14px;
    }

    .parchment-card {
        padding: 28px 24px;
    }

    .iso-icon-svg {
        transform: scale(0.75);
        transform-origin: top left;
    }
}

@media (max-width: 600px) {
    :root {
        --content-max-width: 85vw;
        --chapter-padding: 80px;
    }

    .timeline-content.left,
    .timeline-content.right {
        margin-left: calc(var(--timeline-x) + 30px);
        margin-right: 12px;
    }

    .constellation-nav {
        height: 70px;
    }

    .entry-title {
        font-size: 24px;
    }

    .journal-hint {
        font-size: 14px;
    }
}