/* ==========================================================================
   whitepapers.xyz -- Hand-Drawn Star Archive
   Cosmic manuscript with floating parchment panels
   ========================================================================== */

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

html {
    scroll-behavior: smooth;
    overflow-x: hidden;
}

body {
    font-family: 'Source Serif 4', Georgia, serif;
    font-size: 1rem;
    font-weight: 400;
    line-height: 1.8;
    color: #6A5040;
    background: #0A0A10;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

/* ---------- SVG Noise Filter (hidden) ---------- */
.noise-filter {
    position: absolute;
    width: 0;
    height: 0;
    pointer-events: none;
}

/* ---------- Star Field (fixed background layers) ---------- */
#star-field {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
}

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

#stars-back {
    background:
        radial-gradient(1px 1px at 10% 15%, rgba(245,236,216,0.7) 0%, transparent 100%),
        radial-gradient(1.5px 1.5px at 25% 8%, rgba(245,236,216,0.5) 0%, transparent 100%),
        radial-gradient(1px 1px at 40% 22%, rgba(184,160,112,0.6) 0%, transparent 100%),
        radial-gradient(2px 2px at 55% 5%, rgba(245,236,216,0.8) 0%, transparent 100%),
        radial-gradient(1px 1px at 70% 18%, rgba(184,160,112,0.5) 0%, transparent 100%),
        radial-gradient(1.5px 1.5px at 85% 12%, rgba(245,236,216,0.6) 0%, transparent 100%),
        radial-gradient(1px 1px at 15% 35%, rgba(245,236,216,0.5) 0%, transparent 100%),
        radial-gradient(2px 2px at 30% 42%, rgba(184,160,112,0.7) 0%, transparent 100%),
        radial-gradient(1px 1px at 45% 38%, rgba(245,236,216,0.4) 0%, transparent 100%),
        radial-gradient(1.5px 1.5px at 60% 45%, rgba(245,236,216,0.6) 0%, transparent 100%),
        radial-gradient(1px 1px at 75% 32%, rgba(184,160,112,0.5) 0%, transparent 100%),
        radial-gradient(1px 1px at 90% 40%, rgba(245,236,216,0.5) 0%, transparent 100%),
        radial-gradient(1.5px 1.5px at 5% 55%, rgba(184,160,112,0.6) 0%, transparent 100%),
        radial-gradient(1px 1px at 20% 62%, rgba(245,236,216,0.5) 0%, transparent 100%),
        radial-gradient(2px 2px at 35% 58%, rgba(245,236,216,0.7) 0%, transparent 100%),
        radial-gradient(1px 1px at 50% 65%, rgba(184,160,112,0.4) 0%, transparent 100%),
        radial-gradient(1.5px 1.5px at 65% 52%, rgba(245,236,216,0.6) 0%, transparent 100%),
        radial-gradient(1px 1px at 80% 60%, rgba(245,236,216,0.5) 0%, transparent 100%),
        radial-gradient(1px 1px at 95% 55%, rgba(184,160,112,0.5) 0%, transparent 100%),
        radial-gradient(1.5px 1.5px at 12% 75%, rgba(245,236,216,0.6) 0%, transparent 100%),
        radial-gradient(1px 1px at 28% 82%, rgba(184,160,112,0.5) 0%, transparent 100%),
        radial-gradient(2px 2px at 42% 78%, rgba(245,236,216,0.7) 0%, transparent 100%),
        radial-gradient(1px 1px at 58% 85%, rgba(245,236,216,0.4) 0%, transparent 100%),
        radial-gradient(1.5px 1.5px at 72% 72%, rgba(184,160,112,0.6) 0%, transparent 100%),
        radial-gradient(1px 1px at 88% 80%, rgba(245,236,216,0.5) 0%, transparent 100%),
        radial-gradient(1px 1px at 8% 92%, rgba(245,236,216,0.5) 0%, transparent 100%),
        radial-gradient(1.5px 1.5px at 22% 95%, rgba(184,160,112,0.6) 0%, transparent 100%),
        radial-gradient(1px 1px at 38% 90%, rgba(245,236,216,0.4) 0%, transparent 100%),
        radial-gradient(2px 2px at 52% 98%, rgba(245,236,216,0.7) 0%, transparent 100%),
        radial-gradient(1px 1px at 68% 92%, rgba(184,160,112,0.5) 0%, transparent 100%),
        radial-gradient(1.5px 1.5px at 82% 95%, rgba(245,236,216,0.6) 0%, transparent 100%),
        radial-gradient(1px 1px at 95% 90%, rgba(245,236,216,0.5) 0%, transparent 100%);
    will-change: transform;
}

#stars-mid {
    will-change: transform;
}

/* ---------- Constellations ---------- */
.constellation {
    position: absolute;
    pointer-events: none;
}

.constellation-hero {
    width: 60vw;
    max-width: 600px;
    top: 8%;
    left: 20%;
}

.constellation-sec2 {
    width: 40vw;
    max-width: 400px;
    top: 28%;
    right: 5%;
}

.constellation-sec3 {
    width: 50vw;
    max-width: 500px;
    top: 52%;
    left: 5%;
}

.constellation-sec4 {
    width: 35vw;
    max-width: 400px;
    top: 78%;
    left: 30%;
}

/* ---------- Orbital Arcs ---------- */
.orbital-arc {
    position: fixed;
    border: 1px dashed rgba(184,160,112,0.15);
    border-radius: 50%;
    pointer-events: none;
    z-index: 1;
}

.orbital-arc-1 {
    width: 800px;
    height: 800px;
    top: -200px;
    right: -300px;
}

.orbital-arc-2 {
    width: 600px;
    height: 600px;
    bottom: -100px;
    left: -200px;
}

.orbital-arc-3 {
    width: 1000px;
    height: 1000px;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

/* ---------- Sections ---------- */
.section {
    position: relative;
    z-index: 2;
}

/* ---------- Hero Section ---------- */
#hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 2rem 1rem;
}

.hero-content {
    text-align: center;
    margin-bottom: 3rem;
    position: relative;
}

.starburst-decoration {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    opacity: 0.7;
}

.starburst-decoration svg {
    width: 100%;
    height: 100%;
}

.hero-title {
    font-family: 'DM Sans', sans-serif;
    font-size: clamp(3rem, 8vw, 6rem);
    font-weight: 700;
    color: #B8A070;
    letter-spacing: 0.02em;
    line-height: 1.1;
    text-shadow: 0 0 60px rgba(184,160,112,0.15);
}

.hero-subtitle-line {
    width: 120px;
    height: 1px;
    background: linear-gradient(90deg, transparent, #B8A070, transparent);
    margin: 1.5rem auto 0;
    opacity: 0.5;
}

/* ---------- Parchment Panels ---------- */
.parchment-panel {
    background-color: #F5ECD8;
    background: rgba(245,236,216,0.92);
    max-width: 740px;
    margin: 0 auto;
    padding: 3rem 2.5rem;
    position: relative;
    border: 1px solid rgba(184,160,112,0.3);
    box-shadow:
        0 4px 40px rgba(0,0,0,0.3),
        inset 0 0 80px rgba(184,160,112,0.05);
}

/* Noise texture overlay for parchment */
.parchment-panel::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='300' height='300'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='300' height='300' filter='url(%23n)' opacity='0.04'/%3E%3C/svg%3E");
    background-repeat: repeat;
    opacity: 0.4;
    pointer-events: none;
    mix-blend-mode: multiply;
}

.hero-panel {
    margin-top: 0;
}

.archive-panel,
.fields-panel,
.closing-panel {
    margin-top: 4rem;
    margin-bottom: 4rem;
}

/* ---------- Panel Text ---------- */
.panel-text {
    color: #6A5040;
    font-family: 'Source Serif 4', Georgia, serif;
    font-size: 1rem;
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

.panel-text:last-child {
    margin-bottom: 0;
}

/* ---------- Section Headings ---------- */
.section-heading {
    font-family: 'DM Sans', sans-serif;
    font-size: clamp(2.2rem, 5vw, 4.5rem);
    font-weight: 700;
    color: #2A2018;
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.starburst-header {
    width: 40px;
    height: 40px;
    margin-bottom: 1rem;
    opacity: 0.7;
}

.starburst-header svg {
    width: 100%;
    height: 100%;
}

/* ---------- Paper Entries (Section 2) ---------- */
.paper-entry {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1.2rem 0;
    border-top: 1px solid rgba(184,160,112,0.2);
}

.paper-entry:first-of-type {
    margin-top: 1.5rem;
}

.paper-marker {
    flex-shrink: 0;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #B8A070;
    margin-top: 0.6rem;
    box-shadow: 0 0 8px rgba(184,160,112,0.4);
}

.paper-info {
    flex: 1;
}

.paper-title {
    font-family: 'DM Sans', sans-serif;
    font-size: 1.1rem;
    font-weight: 700;
    color: #2A2018;
    line-height: 1.4;
    margin-bottom: 0.25rem;
}

.paper-meta {
    font-family: 'Source Serif 4', Georgia, serif;
    font-size: 0.85rem;
    color: #4A5068;
    font-style: italic;
}

/* ---------- Field Grid (Section 3) ---------- */
.field-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.field-card {
    padding: 1.5rem 1.2rem;
    border: 1px solid rgba(184,160,112,0.2);
    background: rgba(245,236,216,0.4);
    text-align: center;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.field-card:hover {
    border-color: rgba(184,160,112,0.5);
    box-shadow: 0 2px 20px rgba(184,160,112,0.1);
}

.field-star {
    width: 40px;
    height: 40px;
    margin: 0 auto 0.8rem;
}

.field-star svg {
    width: 100%;
    height: 100%;
}

.field-name {
    font-family: 'DM Sans', sans-serif;
    font-size: 0.95rem;
    font-weight: 700;
    color: #2A2018;
    margin-bottom: 0.3rem;
}

.field-count {
    font-family: 'Source Serif 4', Georgia, serif;
    font-size: 0.8rem;
    color: #4A5068;
    font-style: italic;
}

/* ---------- Closing Section ---------- */
#closing {
    padding-bottom: 6rem;
}

.closing-panel {
    text-align: center;
}

.closing-title {
    font-family: 'DM Sans', sans-serif;
    font-size: 2rem;
    font-weight: 700;
    color: #2A2018;
    margin-bottom: 1rem;
}

.closing-text {
    font-family: 'Source Serif 4', Georgia, serif;
    font-size: 1rem;
    line-height: 1.8;
    color: #6A5040;
    max-width: 500px;
    margin: 0 auto 1.5rem;
}

.closing-star-cluster {
    width: 200px;
    margin: 0 auto;
    opacity: 0.6;
}

.closing-star-cluster svg {
    width: 100%;
    height: auto;
}

.final-starfield-expansion {
    height: 200px;
    position: relative;
}

/* ---------- Responsive ---------- */
@media (max-width: 768px) {
    .parchment-panel {
        margin-left: 1rem;
        margin-right: 1rem;
        padding: 2rem 1.5rem;
    }

    .field-grid {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
        gap: 1rem;
    }

    .orbital-arc {
        display: none;
    }

    .constellation-hero {
        width: 80vw;
        left: 10%;
    }

    .constellation-sec2 {
        width: 60vw;
    }

    .constellation-sec3 {
        width: 70vw;
    }
}

@media (max-width: 480px) {
    .parchment-panel {
        padding: 1.5rem 1rem;
    }

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

    .hero-title {
        letter-spacing: 0;
    }
}