/* continuum.quest - Art Deco Infinity */

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

:root {
    --deep-obsidian: #0a0a0f;
    --midnight-lacquer: #12111a;
    --burnished-gold: #c9a84c;
    --antiqued-brass: #8a7034;
    --ivory-vellum: #f0ead6;
    --champagne-mist: #d4c5a0;
    --rose-quartz: #c47d7d;
    --patina-verdigris: #5a7f6e;
}

html {
    scroll-behavior: smooth;
}

body {
    background: var(--deep-obsidian);
    color: var(--ivory-vellum);
    font-family: 'Cormorant Garamond', serif;
    font-weight: 400;
    font-size: clamp(1rem, 1.8vw, 1.25rem);
    line-height: 1.75;
    letter-spacing: 0.01em;
    overflow-x: hidden;
}

/* Navigation */
#nav-bar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: 20px 0;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.nav-line {
    width: 80%;
    height: 1px;
    background: var(--burnished-gold);
    opacity: 0.5;
}

.nav-diamonds {
    display: flex;
    gap: 60px;
    margin-top: -5px;
}

.nav-diamond {
    width: 8px;
    height: 8px;
    background: var(--antiqued-brass);
    transform: rotate(45deg);
    display: block;
    transition: background 0.3s, box-shadow 0.3s;
    position: relative;
}

.nav-diamond:hover {
    background: var(--rose-quartz);
    box-shadow: 0 0 8px var(--rose-quartz);
}

.nav-diamond::after {
    content: attr(data-tooltip);
    position: absolute;
    top: 16px;
    left: 50%;
    transform: rotate(-45deg) translateX(-50%);
    font-family: 'Josefin Sans', sans-serif;
    font-weight: 300;
    font-size: clamp(0.7rem, 1vw, 0.85rem);
    letter-spacing: 0.25em;
    text-transform: uppercase;
    color: var(--champagne-mist);
    white-space: nowrap;
    opacity: 0;
    transition: opacity 0.3s;
    pointer-events: none;
}

.nav-diamond:hover::after {
    opacity: 1;
}

/* Hero / Threshold */
.section-threshold {
    position: relative;
    width: 100%;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: var(--deep-obsidian);
}

.concentric-frames {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.frame-ring {
    position: absolute;
    width: var(--ring-size);
    height: var(--ring-size);
    border: 1px solid var(--burnished-gold);
    transform: rotate(var(--ring-rotation)) scale(1.5);
    opacity: 0;
    transition: transform 600ms cubic-bezier(0.16, 1, 0.3, 1), opacity 400ms ease;
    transition-delay: var(--ring-delay);
}

.frame-ring:nth-child(even) {
    border-color: var(--antiqued-brass);
}

.frame-ring.visible {
    transform: rotate(var(--ring-rotation)) scale(1);
    opacity: 0.3;
}

.hero-title {
    position: relative;
    z-index: 10;
    font-family: 'Poiret One', cursive;
    font-size: clamp(2.5rem, 7vw, 6rem);
    font-weight: 400;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--burnished-gold);
    line-height: 1.1;
    opacity: 0;
    transition: opacity 0.8s ease 1.4s;
}

.hero-title.visible {
    opacity: 1;
}

/* Chevron Borders */
.chevron-border {
    width: 100%;
    height: 40px;
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
}

.chevron-border::before {
    content: '';
    position: absolute;
    inset: 0;
    background: repeating-linear-gradient(
        90deg,
        transparent 0px,
        transparent 4px,
        var(--burnished-gold) 4px,
        var(--burnished-gold) 5px,
        transparent 5px,
        transparent 12px
    );
    mask-image: repeating-linear-gradient(
        90deg,
        transparent 0px,
        black 0px,
        black 8px,
        transparent 8px,
        transparent 12px
    );
    opacity: 0.3;
    transition: opacity 0.6s ease;
}

.chevron-border.active::before {
    animation: chevronPulse 2s ease-in-out infinite;
}

@keyframes chevronPulse {
    0%, 100% { opacity: 0.3; }
    50% { opacity: 0.8; }
}

/* Diamond Grid Background */
.diamond-grid {
    background-image:
        linear-gradient(45deg, var(--antiqued-brass) 1px, transparent 1px),
        linear-gradient(-45deg, var(--antiqued-brass) 1px, transparent 1px);
    background-size: 40px 40px;
    background-position: 0 0, 20px 0;
    opacity: 0.08;
}

/* Gallery Section */
.section-gallery {
    position: relative;
    padding: 80px 0 120px;
    min-height: 200vh;
}

.center-line {
    position: absolute;
    top: 0;
    left: 50%;
    width: 1px;
    height: 100%;
    background: repeating-linear-gradient(
        to bottom,
        var(--antiqued-brass) 0px,
        var(--antiqued-brass) 6px,
        transparent 6px,
        transparent 12px
    );
    opacity: 0.25;
    transform: translateX(-50%);
}

/* Parallelogram Blocks */
.para-block {
    position: relative;
    width: 60%;
    margin: 80px 0;
    opacity: 0;
    transition: transform 0.8s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.8s ease;
}

.para-block.para-left {
    margin-left: 8%;
    clip-path: polygon(5% 0%, 100% 0%, 95% 100%, 0% 100%);
    transform: translateX(-100%);
}

.para-block.para-right {
    margin-left: 32%;
    clip-path: polygon(0% 0%, 95% 0%, 100% 100%, 5% 100%);
    transform: translateX(100%);
}

.para-block.visible {
    opacity: 1;
    transform: translateX(0);
}

.para-inner {
    background: var(--midnight-lacquer);
    padding: 60px 80px;
    background-image:
        linear-gradient(45deg, var(--antiqued-brass) 1px, transparent 1px),
        linear-gradient(-45deg, var(--antiqued-brass) 1px, transparent 1px);
    background-size: 40px 40px;
    background-position: 0 0, 20px 0;
    background-blend-mode: overlay;
}

.para-inner::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--midnight-lacquer);
    opacity: 0.92;
    z-index: 0;
}

.para-inner > * {
    position: relative;
    z-index: 1;
}

.section-heading {
    font-family: 'Poiret One', cursive;
    font-size: clamp(1.8rem, 4vw, 3rem);
    font-weight: 400;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--burnished-gold);
    line-height: 1.1;
    margin-bottom: 12px;
}

.heading-frame {
    width: 200px;
    height: 4px;
    position: relative;
    margin-bottom: 30px;
}

.heading-frame::before {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    border: 1px solid var(--burnished-gold);
}

.reveal-text {
    opacity: 0;
    transform: translateY(10px);
    transition: opacity 0.6s ease, transform 0.6s ease;
    margin-bottom: 1em;
    color: var(--ivory-vellum);
}

.reveal-text.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Sunburst Divider */
.sunburst-divider {
    display: flex;
    justify-content: center;
    padding: 40px 0;
    opacity: 0.6;
}

/* Convergence Section */
.section-convergence {
    position: relative;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: var(--deep-obsidian);
    padding: 120px 0;
}

.convergence-frames {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.frame-ring.expanding {
    transition: transform 1s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.8s ease;
}

.frame-ring.expanding.visible {
    opacity: 0.2;
}

.convergence-content {
    position: relative;
    z-index: 10;
    max-width: 500px;
    text-align: center;
    padding: 40px;
}

.convergence-text {
    font-family: 'Cormorant Garamond', serif;
    font-weight: 400;
    font-size: clamp(1.1rem, 2vw, 1.4rem);
    line-height: 1.8;
    color: var(--champagne-mist);
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.convergence-text.visible {
    opacity: 1;
    transform: translateY(0);
}

.convergence-heart {
    position: relative;
    z-index: 10;
    margin-top: 60px;
}

.heart-diamond {
    width: 16px;
    height: 16px;
    background: var(--rose-quartz);
    transform: rotate(45deg);
    animation: heartPulse 2s ease-in-out infinite;
}

@keyframes heartPulse {
    0%, 100% {
        transform: rotate(45deg) scale(1);
        opacity: 0.8;
    }
    50% {
        transform: rotate(45deg) scale(1.05);
        opacity: 1;
    }
}

.onward-text {
    position: relative;
    z-index: 10;
    margin-top: 40px;
    font-family: 'Josefin Sans', sans-serif;
    font-weight: 300;
    font-size: clamp(0.7rem, 1vw, 0.85rem);
    letter-spacing: 0.5em;
    text-transform: uppercase;
    color: var(--champagne-mist);
    opacity: 0;
    transition: opacity 1s ease;
}

.onward-text.visible {
    opacity: 1;
}

/* Label styles */
.section-label {
    font-family: 'Josefin Sans', sans-serif;
    font-weight: 300;
    font-size: clamp(0.7rem, 1vw, 0.85rem);
    letter-spacing: 0.25em;
    text-transform: uppercase;
    color: var(--champagne-mist);
}

/* Responsive */
@media (max-width: 768px) {
    .para-block {
        width: 90%;
    }

    .para-block.para-left {
        margin-left: 5%;
    }

    .para-block.para-right {
        margin-left: 5%;
    }

    .para-inner {
        padding: 40px 50px;
    }

    .nav-diamonds {
        gap: 30px;
    }
}