/* =============================================================================
   POLYTICS.CLUB — BRUTALIST COASTAL PAMPHLET
   Fever-dream political aesthetic, 1970s alternate timeline
   Interactive anchored blocks feature CSS-drawn icons: small circles (16px diameter for triggering.
   IntersectionObserver` Spring physics approximated `cubic-bezier(0.34; Placards animate sequentially (200ms; Source Serif 4" (Google Fonts.
   ============================================================================= */

:root {
    /* Exact Color Palette */
    --color-tidal-navy: #0b2545;
    --color-abyssal-ink: #13678a;
    --color-oxidized-copper: #5e7e6e;
    --color-sea-glass: #c9d1c8;
    --color-eroded-cream: #e8dcc8;
    --color-parchment-fog: #d4c5a9;
    --color-storm-teal: #1b8ca0;
    --color-wet-stone: #1b3a4b;
    --color-barnacle-gray: #8aabbd;

    /* Typography scale */
    --font-display: "Archivo Black", sans-serif;
    --font-slab: "Bitter", serif;
    --font-body: "Source Serif 4", serif;
    --font-mono: "IBM Plex Mono", monospace;

    /* Spacing and sizing */
    --spacing-unit: 8px;
    --border-width: 3px;
    --transition-fast: 200ms;
    --transition-base: 600ms;
    --spring-easing: cubic-bezier(0.34, 1.56, 0.64, 1);

    /* Scroll progress tracking */
    --scroll-progress: 0;
    --column-width: 1200px;
}

/* =============================================================================
   GLOBAL RESET & FOUNDATION
   ============================================================================= */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: var(--font-body);
    background-color: var(--color-eroded-cream);
    color: var(--color-wet-stone);
    line-height: 1.72;
    letter-spacing: 0.005em;
    position: relative;
    overflow-x: hidden;

    /* Paper-grain texture overlay */
    background-image: url("data:image/svg+xml,%3Csvg width='100' height='100' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='grain'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' result='noise' /%3E%3CfeColorMatrix in='noise' type='saturate' values='0' /%3E%3C/filter%3E%3Crect width='100' height='100' fill='%23e8dcc8' filter='url(%23grain)' opacity='0.03' /%3E%3C/svg%3E");
    background-attachment: fixed;
    background-size: 100px 100px;
}

/* Paper grain parallax effect via scroll */
@supports (background-position-y: calc(var(--scroll-progress) * 1px)) {
    body {
        background-position-y: calc(var(--scroll-progress) * 0.05px);
    }
}

/* =============================================================================
   TYPOGRAPHY
   ============================================================================= */

h1 {
    font-family: var(--font-display);
    font-size: clamp(2.4rem, 5.5vw, 4.8rem);
    font-weight: 400;
    line-height: 1.05;
    letter-spacing: -0.02em;
    color: var(--color-tidal-navy);
}

h2 {
    font-family: var(--font-slab);
    font-size: clamp(1.1rem, 2.5vw, 1.6rem);
    font-weight: 500;
    font-style: italic;
    line-height: 1.35;
    letter-spacing: 0.01em;
    color: var(--color-oxidized-copper);
    margin-bottom: var(--spacing-unit);
}

h3 {
    font-family: var(--font-slab);
    font-size: 1.35rem;
    font-weight: 500;
    font-style: italic;
    color: var(--color-oxidized-copper);
    margin-bottom: calc(var(--spacing-unit) * 0.75);
}

p {
    font-size: clamp(1rem, 1.2vw, 1.15rem);
    max-width: 62ch;
    margin-bottom: var(--spacing-unit);
}

blockquote {
    font-family: var(--font-slab);
    font-style: italic;
    font-size: clamp(1.4rem, 3vw, 2.2rem);
    line-height: 1.4;
    color: var(--color-tidal-navy);
}

/* Annotations and metadata */
.metadata {
    font-family: var(--font-mono);
    font-weight: 300;
    font-size: 0.78rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--color-barnacle-gray);
    display: block;
    margin-top: calc(var(--spacing-unit) * 1.5);
    opacity: 0;
    animation: metadata-reveal 0.4s ease-out forwards;
    animation-delay: 600ms;
}

/* =============================================================================
   LAYOUT STRUCTURE: FOLDS & BROADSHEET PATTERN
   ============================================================================= */

.fold {
    width: 100%;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    padding: calc(var(--spacing-unit) * 6) var(--spacing-unit);
}

.fold-content {
    width: 100%;
    max-width: var(--column-width);
    margin: 0 auto;
    position: relative;
    z-index: 10;

    /* Progressive column narrowing */
    max-width: calc(1200px - (var(--scroll-progress) * 12px));
}

/* Column narrowing based on scroll depth */
.fold-2 .fold-content {
    max-width: 1160px;
}

.fold-3 .fold-content {
    max-width: 1080px;
}

.fold-4 .fold-content {
    max-width: 960px;
}

.fold-5 .fold-content {
    max-width: 720px;
}

/* Individual fold backgrounds */
.fold-1 {
    background-color: var(--color-tidal-navy);
    color: var(--color-eroded-cream);
}

.fold-1 h1 {
    color: var(--color-eroded-cream);
}

.fold-2 {
    background-color: var(--color-parchment-fog);
    color: var(--color-wet-stone);
}

.fold-3 {
    background: linear-gradient(180deg, var(--color-eroded-cream) 0%, var(--color-sea-glass) 42%, var(--color-tidal-navy) 100%);
    color: var(--color-tidal-navy);
}

.fold-3 blockquote {
    color: var(--color-tidal-navy);
}

.fold-4 {
    background-color: var(--color-tidal-navy);
    color: var(--color-eroded-cream);
}

.fold-4 h3 {
    color: var(--color-storm-teal);
}

.fold-4 p {
    color: var(--color-eroded-cream);
}

.fold-5 {
    background-color: var(--color-parchment-fog);
    color: var(--color-wet-stone);
    justify-content: center;
}

/* Torn-edge section breaks */
.fold-break {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 100px;
    z-index: 20;
}

.fold-1 .fold-break,
.fold-4 .fold-break {
    background: var(--color-parchment-fog);
}

.fold-2 .fold-break,
.fold-5 .fold-break {
    background: var(--color-eroded-cream);
}

.fold-3 .fold-break {
    background: var(--color-tidal-navy);
}

/* =============================================================================
   FOLD I: KINETIC TYPOGRAPHY (Hero)
   ============================================================================= */

.kinetic-title {
    text-align: center;
    margin-bottom: calc(var(--spacing-unit) * 2);
    letter-spacing: 0.05em;
}

.kinetic-char {
    display: inline-block;
    opacity: 0;
    transform: translateY(30px);
    animation: kinetic-char-enter 0.6s var(--spring-easing) forwards;
}

/* Each character staggered by 60ms */
.kinetic-char:nth-child(1) { animation-delay: 0ms; }
.kinetic-char:nth-child(2) { animation-delay: 60ms; }
.kinetic-char:nth-child(3) { animation-delay: 120ms; }
.kinetic-char:nth-child(4) { animation-delay: 180ms; }
.kinetic-char:nth-child(5) { animation-delay: 240ms; }
.kinetic-char:nth-child(6) { animation-delay: 300ms; }
.kinetic-char:nth-child(7) { animation-delay: 360ms; }
.kinetic-char:nth-child(8) { animation-delay: 420ms; }
.kinetic-char:nth-child(9) { animation-delay: 480ms; }
.kinetic-char:nth-child(10) { animation-delay: 540ms; }
.kinetic-char:nth-child(11) { animation-delay: 600ms; }
.kinetic-char:nth-child(12) { animation-delay: 660ms; }
.kinetic-char:nth-child(13) { animation-delay: 720ms; }

@keyframes kinetic-char-enter {
    0% {
        opacity: 0;
        transform: translateY(30px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

.manifesto-tagline {
    text-align: center;
    font-family: var(--font-slab);
    font-style: italic;
    font-size: 1.2rem;
    color: var(--color-eroded-cream);
    opacity: 0;
    animation: fade-in-up 0.8s ease-out forwards;
    animation-delay: 800ms;
}

@keyframes fade-in-up {
    0% {
        opacity: 0;
        transform: translateY(10px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

/* =============================================================================
   FOLD II: PLACARD ELEMENTS & Z-PATTERN GRID
   ============================================================================= */

.z-pattern-grid {
    position: relative;
    height: 100vh;
    display: grid;
    grid-template-columns: repeat(8, 1fr);
    grid-template-rows: repeat(6, 1fr);
    gap: calc(var(--spacing-unit) * 1);
}

.placard {
    background-color: var(--color-eroded-cream);
    border: var(--border-width) solid var(--color-tidal-navy);
    border-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='10'%3E%3Cpath d='M2,2 Q3,3 4,2 Q5,1 6,3' stroke='%230b2545' stroke-width='0.5' fill='none' opacity='0.4'/%3E%3C/svg%3E") 1;
    padding: calc(var(--spacing-unit) * 3);
    box-shadow: 4px 4px 0px rgba(0, 0, 0, 0.2);
    position: absolute;
    opacity: 0;
    animation: placard-enter 0.7s var(--spring-easing) forwards;
}

@keyframes placard-enter {
    0% {
        opacity: 0;
        transform: scale(0.9) translate(0, 20px);
    }
    100% {
        opacity: 1;
        transform: scale(1) translate(0, 0);
    }
}

.placard-top-left {
    top: 5%;
    left: 5%;
    width: 40%;
    transform: rotate(-1deg);
    animation-delay: 200ms;
}

.placard-top-right {
    top: 5%;
    right: 5%;
    width: 40%;
    transform: rotate(0.8deg);
    animation-delay: 400ms;
}

.placard-bottom-center {
    bottom: 5%;
    left: 50%;
    transform: translateX(-50%) rotate(-0.3deg);
    width: 45%;
    animation-delay: 600ms;
}

.placard h2 {
    margin-bottom: calc(var(--spacing-unit) * 1.5);
}

.placard p {
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-wet-stone);
}

/* Thumbtack styling */
.thumbtack {
    position: absolute;
    top: calc(var(--spacing-unit) * 1.5);
    left: calc(var(--spacing-unit) * 1.5);
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: radial-gradient(circle at 30% 30%, #a8b4c8, #6a7a8a);
    box-shadow: 2px 2px 4px rgba(0, 0, 0, 0.4);
    transition: transform 0.3s ease-out;
}

.placard:hover .thumbtack {
    transform: rotate(15deg);
}

.ornament-connector {
    display: flex;
    justify-content: center;
    margin-top: calc(var(--spacing-unit) * 2);
}

.ornament {
    color: var(--color-abyssal-ink);
    opacity: 0.4;
    animation: ornament-scale-in 0.6s var(--spring-easing) forwards;
    animation-delay: 800ms;
}

@keyframes ornament-scale-in {
    0% {
        opacity: 0;
        transform: scale(0);
    }
    100% {
        opacity: 0.4;
        transform: scale(1);
    }
}

/* =============================================================================
   FOLD III: PULL-QUOTE & KINETIC WORDS
   ============================================================================= */

.pull-quote-container {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    margin: 0 auto;
    max-width: 800px;
}

.quotation-mark {
    color: var(--color-abyssal-ink);
    margin: 0 auto;
}

.quotation-mark-open {
    width: 60px;
    height: 60px;
    margin-bottom: -20px;
    animation: quote-fade-in 0.8s ease-out forwards;
}

.quotation-mark-close {
    width: 60px;
    height: 60px;
    margin-top: -20px;
    animation: quote-fade-in 0.8s ease-out forwards;
    animation-delay: 200ms;
}

@keyframes quote-fade-in {
    0% {
        opacity: 0;
        transform: scale(0.8);
    }
    100% {
        opacity: 0.15;
        transform: scale(1);
    }
}

.kinetic-blockquote {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.4em;
    margin: calc(var(--spacing-unit) * 2) 0;
}

.kinetic-word {
    display: inline-block;
    opacity: 0;
    transform: translateY(10px);
    animation: word-enter 0.5s ease-out forwards;
}

.kinetic-word:nth-child(1) { animation-delay: 400ms; }
.kinetic-word:nth-child(2) { animation-delay: 480ms; }
.kinetic-word:nth-child(3) { animation-delay: 560ms; }
.kinetic-word:nth-child(4) { animation-delay: 640ms; }
.kinetic-word:nth-child(5) { animation-delay: 720ms; }
.kinetic-word:nth-child(6) { animation-delay: 800ms; }
.kinetic-word:nth-child(7) { animation-delay: 880ms; }
.kinetic-word:nth-child(8) { animation-delay: 960ms; }
.kinetic-word:nth-child(9) { animation-delay: 1040ms; }
.kinetic-word:nth-child(10) { animation-delay: 1120ms; }

@keyframes word-enter {
    0% {
        opacity: 0;
        transform: translateY(10px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Tide-line horizontal rule */
.tide-line {
    width: 100%;
    height: 2px;
    background-image: url("data:image/svg+xml,%3Csvg width='200' height='2' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M0,1 Q50,0 100,1 T200,1' stroke='%231b8ca0' stroke-width='2' fill='none' opacity='0.2' /%3E%3C/svg%3E");
    background-repeat: repeat-x;
    background-size: 200px 2px;
    margin: calc(var(--spacing-unit) * 3) 0;
    animation: tide-flow 3s ease-in-out infinite;
}

@keyframes tide-flow {
    0% {
        background-position: 0 0;
    }
    100% {
        background-position: 200px 0;
    }
}

/* =============================================================================
   FOLD IV: ARCHIVE & INDEX CARDS
   Cards stagger in from their respective sides (left cards from left, right from right).
   ============================================================================= */

.archive-stack {
    display: flex;
    flex-direction: column;
    gap: calc(var(--spacing-unit) * 4);
    align-items: center;
    width: 100%;
}

.index-card {
    background-color: var(--color-eroded-cream);
    border: var(--border-width) solid var(--color-abyssal-ink);
    padding: calc(var(--spacing-unit) * 2);
    max-width: 480px;
    position: relative;
    opacity: 0;
    animation: card-enter 0.6s var(--spring-easing) forwards;
}

@keyframes card-enter {
    0% {
        opacity: 0;
        transform: translateX(0) scale(0.95);
    }
    100% {
        opacity: 1;
        transform: translateX(0) scale(1);
    }
}

.index-card-left {
    align-self: flex-start;
    margin-left: 5%;
    animation-name: card-enter-left;
}

.index-card-right {
    align-self: flex-end;
    margin-right: 5%;
    animation-name: card-enter-right;
}

@keyframes card-enter-left {
    0% {
        opacity: 0;
        transform: translateX(-40px) scale(0.95);
    }
    100% {
        opacity: 1;
        transform: translateX(0) scale(1);
    }
}

@keyframes card-enter-right {
    0% {
        opacity: 0;
        transform: translateX(40px) scale(0.95);
    }
    100% {
        opacity: 1;
        transform: translateX(0) scale(1);
    }
}

.index-card:nth-child(1) { animation-delay: 0ms; }
.index-card:nth-child(2) { animation-delay: 150ms; }
.index-card:nth-child(3) { animation-delay: 300ms; }
.index-card:nth-child(4) { animation-delay: 450ms; }

.thumbtack-small {
    position: absolute;
    top: calc(var(--spacing-unit) * 1);
    left: calc(var(--spacing-unit) * 1);
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: radial-gradient(circle at 30% 30%, #a8b4c8, #6a7a8a);
    box-shadow: 2px 2px 3px rgba(0, 0, 0, 0.3);
}

.index-card h3 {
    margin-top: 0;
}

.index-card p {
    color: var(--color-wet-stone);
    font-size: 0.95rem;
    max-width: none;
}

/* =============================================================================
   FOLD V: CLOSING & FOOTER
   ============================================================================= */

.closing-section {
    text-align: center;
    animation: closing-fade 1s ease-out forwards;
}

@keyframes closing-fade {
    0% {
        opacity: 0;
        transform: translateY(20px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

.closing-title {
    font-family: var(--font-display);
    font-size: 3rem;
    color: var(--color-tidal-navy);
    margin-bottom: var(--spacing-unit);
}

.closing-tagline {
    font-family: var(--font-slab);
    font-style: italic;
    font-size: 1.2rem;
    color: var(--color-oxidized-copper);
    margin-bottom: calc(var(--spacing-unit) * 3);
    max-width: none;
}

.ornament-cluster {
    display: flex;
    justify-content: center;
    gap: calc(var(--spacing-unit) * 2);
}

.ornament-large {
    color: var(--color-abyssal-ink);
    opacity: 0.4;
    animation: ornament-scale-in 0.6s var(--spring-easing) forwards;
    animation-delay: 300ms;
}

/* Ambient grain drift in footer */
.fold-5 {
    animation: grain-drift 40s linear infinite;
}

@keyframes grain-drift {
    0% {
        background-position-y: 0;
    }
    100% {
        background-position-y: 20px;
    }
}

/* =============================================================================
   NAVIGATION: BULLETIN PIN
   ============================================================================= */

.nav-pin {
    position: fixed;
    top: calc(var(--spacing-unit) * 2);
    right: calc(var(--spacing-unit) * 2);
    z-index: 1000;
}

.pin-button {
    width: 48px;
    height: 48px;
    border: none;
    background: transparent;
    cursor: pointer;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.pin-icon {
    display: block;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: radial-gradient(circle at 30% 30%, #a8b4c8, #6a7a8a);
    box-shadow: 4px 4px 8px rgba(0, 0, 0, 0.3);
    transition: transform 0.3s ease-out;
}

.pin-button:hover .pin-icon {
    transform: rotate(15deg) scale(1.1);
}

.pin-button:active .pin-icon {
    box-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
}

/* Navigation overlay */
.nav-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(11, 37, 69, 0.95);
    z-index: 999;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.4s ease-out, visibility 0.4s ease-out;
}

.nav-overlay:not([hidden]) {
    opacity: 1;
    visibility: visible;
}

.nav-cards {
    display: flex;
    flex-direction: column;
    gap: calc(var(--spacing-unit) * 3);
    align-items: center;
}

.nav-card {
    background-color: var(--color-eroded-cream);
    border: var(--border-width) solid var(--color-abyssal-ink);
    padding: calc(var(--spacing-unit) * 2) calc(var(--spacing-unit) * 4);
    text-decoration: none;
    color: var(--color-wet-stone);
    font-family: var(--font-slab);
    font-style: italic;
    font-size: 1.1rem;
    display: block;
    text-align: center;
    transition: all 0.3s ease-out;
    cursor: pointer;
}

.nav-card:hover {
    background-color: var(--color-storm-teal);
    color: var(--color-eroded-cream);
    transform: scale(1.05);
}

.nav-close {
    position: absolute;
    top: calc(var(--spacing-unit) * 2);
    right: calc(var(--spacing-unit) * 2);
    background: transparent;
    border: none;
    font-size: 3rem;
    color: var(--color-eroded-cream);
    cursor: pointer;
    padding: 0;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.3s ease-out;
}

.nav-close:hover {
    transform: rotate(90deg);
}

/* =============================================================================
   RESPONSIVE DESIGN
   ============================================================================= */

@media (max-width: 768px) {
    :root {
        --column-width: 100%;
    }

    .fold {
        padding: calc(var(--spacing-unit) * 4) var(--spacing-unit);
    }

    .z-pattern-grid {
        height: auto;
        grid-template-columns: 1fr;
        grid-template-rows: auto;
    }

    .placard {
        position: static;
        width: 100% !important;
        margin-bottom: calc(var(--spacing-unit) * 3);
        transform: rotate(0deg) !important;
    }

    .placard-top-left,
    .placard-top-right,
    .placard-bottom-center {
        top: auto;
        left: auto;
        right: auto;
        bottom: auto;
        width: 100% !important;
    }

    .index-card-left,
    .index-card-right {
        align-self: center !important;
        margin-left: 0 !important;
        margin-right: 0 !important;
    }

    .kinetic-blockquote {
        font-size: 1.5rem;
    }

    .closing-title {
        font-size: 2rem;
    }

    .nav-cards {
        gap: calc(var(--spacing-unit) * 2);
    }

    .nav-card {
        width: 80%;
        max-width: 300px;
    }
}

@media (max-width: 480px) {
    h1 {
        font-size: clamp(1.8rem, 6vw, 2.4rem);
    }

    h2 {
        font-size: clamp(1rem, 2vw, 1.3rem);
    }

    .placard {
        padding: calc(var(--spacing-unit) * 1.5);
    }

    .kinetic-blockquote {
        font-size: 1.2rem;
    }

    .closing-title {
        font-size: 1.5rem;
    }

    .nav-pin {
        top: calc(var(--spacing-unit) * 1);
        right: calc(var(--spacing-unit) * 1);
    }

    .pin-button {
        width: 40px;
        height: 40px;
    }

    .pin-icon {
        width: 20px;
        height: 20px;
    }
}

/* SVG definitions block */
.svg-defs {
    display: none;
}