/* mosun.xyz - Contradiction Catalog */
/* Deep Burgundy + Dopamine Maximalist */

:root {
    --color-bg: #faf6f0;
    --color-burgundy: #4a0e2a;
    --color-text: #1e0a14;
    --color-cream: #f5ede3;
    --color-fuchsia: #e8175d;
    --color-gold: #f5a623;
    --color-teal: #0d5c63;
    --color-muted: #c9a6b5;
    --font-display: "Cormorant Garamond", serif;
    --font-body: "Source Sans 3", sans-serif;
    --font-mono: "JetBrains Mono", monospace;
    --font-cjk: "Noto Serif JP", serif;
    --lift-distance: -6px;
    --lift-shadow: 0 12px 24px rgba(30, 10, 20, 0.15);
}

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

html { scroll-behavior: smooth; }

body {
    font-family: var(--font-body);
    font-weight: 400;
    font-size: 1.125rem;
    line-height: 1.65;
    letter-spacing: 0.01em;
    color: var(--color-text);
    background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-cream) 100%);
    background-attachment: fixed;
    min-height: 100vh;
    overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }

/* Dot Grid Background */
#dot-grid {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: radial-gradient(circle, var(--color-muted) 1px, transparent 1px);
    background-size: 24px 24px;
    opacity: 0.15;
    pointer-events: none;
    z-index: 0;
}

/* Title Card */
#title-card {
    position: fixed;
    top: 0; left: 0;
    width: 100vw;
    height: 100vh;
    background: var(--color-burgundy);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    transition: transform 0.8s cubic-bezier(0.65, 0, 0.35, 1);
}

#title-card.revealed {
    transform: translateY(-100vh);
}

.title-card-inner {
    text-align: center;
    position: relative;
}

.title-blink-cursor {
    display: inline-block;
    width: 3px;
    height: clamp(4rem, 10vw, 8rem);
    background: var(--color-fuchsia);
    position: absolute;
    top: 0;
    right: -20px;
    animation: blink 1s step-end infinite;
}

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

.title-kanji {
    font-family: var(--font-cjk);
    font-weight: 700;
    font-size: clamp(6rem, 15vw, 12rem);
    color: var(--color-cream);
    line-height: 1;
    margin-bottom: 1.5rem;
}

.title-subtitle {
    font-family: var(--font-display);
    font-weight: 600;
    font-style: italic;
    font-size: clamp(1.2rem, 3vw, 2rem);
    color: var(--color-muted);
    max-width: 600px;
    margin: 0 auto;
    padding: 0 2rem;
}
/* Navigation */
#main-nav {
    position: fixed;
    top: 0; left: 0; right: 0;
    height: 56px;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-muted);
    z-index: 100;
    transition: opacity 0.3s ease;
    opacity: 0;
}

#main-nav.visible { opacity: 1; }

.nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 56px;
    padding: 0 2rem;
    max-width: 1400px;
    margin: 0 auto;
}

.nav-logo {
    font-family: var(--font-cjk);
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--color-burgundy);
}

#nav-toggle {
    background: none;
    border: none;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
}

.hamburger-line {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-text);
    transition: transform 0.3s ease, opacity 0.3s ease;
}

#nav-toggle.active .hamburger-line:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}
#nav-toggle.active .hamburger-line:nth-child(2) {
    opacity: 0;
}
#nav-toggle.active .hamburger-line:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

.nav-menu {
    position: fixed;
    top: 56px; left: 0; right: 0;
    background: var(--color-burgundy);
    border-radius: 0 0 40% 40%;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s cubic-bezier(0.65, 0, 0.35, 1), padding 0.4s ease;
    z-index: 99;
}

.nav-menu.open {
    max-height: 300px;
    padding: 2rem 0;
}

.nav-menu-inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    padding: 0 2rem;
}

.nav-filter {
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--color-cream);
    padding: 0.5rem 1rem;
    transition: color 0.2s ease;
}

.nav-filter:hover, .nav-filter.active {
    color: var(--color-fuchsia);
}
/* Paradox Grid */
#paradox-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
    max-width: 1400px;
    margin: 0 auto;
    padding: 80px 2rem 4rem;
    position: relative;
    z-index: 1;
}

/* Card Base */
.card {
    display: flex;
    flex-direction: column;
    background: var(--color-bg);
    box-shadow: 0 1px 3px rgba(30, 10, 20, 0.08), inset 0 0 0 1px var(--color-muted);
    position: relative;
    overflow: hidden;
    transition: all 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
    cursor: pointer;
    opacity: 0;
    transform: translateY(12px);
}

.card[data-visible="true"] {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.5s ease, transform 0.5s ease, box-shadow 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.card--span2 { grid-column: span 2; }

.card--rotated { transform: rotate(1.2deg) translateY(12px); }
.card--rotated[data-visible="true"] { transform: rotate(1.2deg) translateY(0); }

/* Card Clip Paths - Corner Cuts */
.card--cut-tl { clip-path: polygon(16px 0, 100% 0, 100% 100%, 0 100%, 0 16px); }
.card--cut-tr { clip-path: polygon(0 0, calc(100% - 16px) 0, 100% 16px, 100% 100%, 0 100%); }
.card--cut-bl { clip-path: polygon(0 0, 100% 0, 100% 100%, 16px 100%, 0 calc(100% - 16px)); }
.card--cut-br { clip-path: polygon(0 0, 100% 0, 100% calc(100% - 16px), calc(100% - 16px) 100%, 0 100%); }

/* Corner Gold Triangle (pseudo-element behind clip) */
.card::before {
    content: "";
    position: absolute;
    width: 32px;
    height: 32px;
    background: var(--color-gold);
    z-index: 0;
    transition: background 0.25s ease;
}
.card--cut-tl::before { top: -1px; left: -1px; }
.card--cut-tr::before { top: -1px; right: -1px; }
.card--cut-bl::before { bottom: -1px; left: -1px; }
.card--cut-br::before { bottom: -1px; right: -1px; }

/* Hover Effects */
.card:hover {
    transform: translateY(var(--lift-distance));
    box-shadow: var(--lift-shadow), inset 0 0 0 1px var(--color-muted);
}
.card--rotated:hover {
    transform: rotate(1.2deg) translateY(var(--lift-distance));
}
.card:hover::before { background: var(--color-fuchsia); }

.card:active {
    transform: translateY(-3px);
}
.card--rotated:active {
    transform: rotate(1.2deg) translateY(-3px);
}
/* Card Content */
.card-content {
    padding: 2rem 1.5rem 1.5rem;
    flex: 1;
    position: relative;
    z-index: 1;
}

.card-headline {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: clamp(1.4rem, 3vw, 1.8rem);
    letter-spacing: -0.02em;
    line-height: 1.1;
    color: var(--color-text);
    margin-bottom: 0.75rem;
}

.card-body {
    font-family: var(--font-body);
    font-weight: 400;
    font-size: 1rem;
    line-height: 1.65;
    color: var(--color-text);
}

/* Card Strip */
.card-strip {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 0.75rem 1.5rem;
    background: linear-gradient(180deg, var(--color-burgundy) 0%, var(--color-text) 100%);
    min-height: 48px;
    position: relative;
    z-index: 1;
}

.card-counter {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    letter-spacing: 0.04em;
    color: var(--color-teal);
    line-height: 1.4;
}

.card-id {
    font-family: var(--font-mono);
    font-size: 0.6875rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--color-gold);
    white-space: nowrap;
}

/* Card Shapes */
.card-shape {
    padding: 1.5rem 1.5rem 0;
    position: relative;
    z-index: 1;
}

.card-shape--spear {
    color: var(--color-fuchsia);
}
.card-shape--spear svg {
    width: 30px;
    height: 40px;
    transform: rotate(35deg);
}

.card-shape--shield { color: var(--color-teal); }
.shield-shape {
    width: 40px;
    height: 36px;
    background: var(--color-teal);
    border-radius: 40% 40% 4px 4px;
}

.card-svg-art {
    padding: 1.5rem 1.5rem 0;
    color: var(--color-text);
    position: relative;
    z-index: 1;
}
.card-svg-art svg {
    width: 60px;
    height: 60px;
}

/* Card hidden state for filtering */
.card.hidden {
    display: none;
}
/* Footer */
#site-footer {
    background: var(--color-burgundy);
    padding: 3rem 2rem;
    position: relative;
    z-index: 1;
    margin-top: 4rem;
}

.footer-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1400px;
    margin: 0 auto;
    flex-wrap: wrap;
    gap: 1rem;
}

.footer-left {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.footer-logo {
    font-family: var(--font-cjk);
    font-weight: 700;
    font-size: 2rem;
    color: var(--color-cream);
}

.footer-tagline {
    font-family: var(--font-body);
    font-weight: 400;
    font-size: 0.9375rem;
    color: var(--color-muted);
}

.footer-meta {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--color-teal);
}

/* Responsive */
@media (max-width: 1023px) {
    #paradox-grid {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    }
    .card--span2 { grid-column: span 2; }
    .card-content { padding: 1.5rem 1.25rem 1rem; }
    .title-kanji { font-size: 8rem; }
}

@media (max-width: 599px) {
    #paradox-grid {
        grid-template-columns: 1fr;
        padding: 72px 1rem 2rem;
        gap: 1.5rem;
    }
    .card--span2 { grid-column: span 1; }
    .card:hover {
        transform: none;
        box-shadow: 0 1px 3px rgba(30, 10, 20, 0.08), inset 0 0 0 1px var(--color-muted);
    }
    .card--rotated, .card--rotated[data-visible="true"] {
        transform: rotate(0deg) translateY(0);
    }
    .card:active {
        transform: translateY(-3px);
    }
    .title-kanji { font-size: 5rem; }
    .nav-menu {
        top: auto;
        bottom: 0;
        left: 0; right: 0;
        position: fixed;
        border-radius: 24px 24px 0 0;
    }
    .footer-inner {
        flex-direction: column;
        text-align: center;
    }
    .footer-left {
        flex-direction: column;
    }
}