/* eyes.plus - Anatomical Eye Journey */

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

:root {
    --teal: #00CEC9;
    --amber: #F0A500;
    --deep-indigo: #1B1464;
    --crimson: #E74C3C;
    --cool-gray: #DFE6ED;
    --abyss: #0A0A1A;
    --purple: #7B2FBE;
    --warm-white: #F5F0EB;
}

html {
    scroll-behavior: smooth;
}

body {
    background: var(--abyss);
    color: var(--warm-white);
    font-family: 'Lato', sans-serif;
    overflow-x: hidden;
    line-height: 1.7;
}

/* === Floaters Layer === */
#floaters-layer {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 9999;
    overflow: hidden;
}

.floater {
    position: absolute;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(223, 230, 237, 0.08), transparent 70%);
    animation: floaterDrift linear infinite;
}

@keyframes floaterDrift {
    0% { transform: translate(0, 0) scale(1); }
    25% { transform: translate(30px, -20px) scale(1.05); }
    50% { transform: translate(-15px, -50px) scale(0.95); }
    75% { transform: translate(20px, -30px) scale(1.02); }
    100% { transform: translate(0, -100vh) scale(1); }
}

/* === Eye Section Base === */
.eye-section {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: clamp(2rem, 5vw, 4rem);
    position: relative;
    overflow: hidden;
}

/* === Section 1: Cornea === */
#cornea {
    background: radial-gradient(ellipse at center, var(--deep-indigo) 0%, var(--abyss) 70%);
}

.iris-aperture {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    pointer-events: none;
}

.iris-svg {
    width: min(120vw, 120vh);
    height: min(120vw, 120vh);
    opacity: 0.6;
    animation: irisOpen 2s ease-out forwards;
}

@keyframes irisOpen {
    0% { transform: scale(0.3); opacity: 0; }
    100% { transform: scale(1); opacity: 0.6; }
}

.pupil {
    animation: pupilPulse 4s ease-in-out infinite;
}

@keyframes pupilPulse {
    0%, 100% { r: 60; }
    50% { r: 50; }
}

.cornea-content {
    position: relative;
    z-index: 10;
    text-align: center;
}

.wordmark {
    font-family: 'Cormorant Garamond', serif;
    font-weight: 300;
    font-size: clamp(3rem, 8vw, 6rem);
    letter-spacing: 0.15em;
    color: var(--warm-white);
    text-shadow: 0 0 40px rgba(0, 206, 201, 0.3);
    margin-bottom: 1rem;
}

.tagline {
    font-family: 'Lato', sans-serif;
    font-weight: 300;
    font-size: clamp(0.8rem, 1.5vw, 1.1rem);
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--cool-gray);
    opacity: 0.7;
}

.scroll-hint {
    position: absolute;
    bottom: 2rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.3rem;
    z-index: 10;
    animation: hintBounce 2s ease infinite;
}

.hint-text {
    font-family: 'Lato', sans-serif;
    font-size: 0.7rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--teal);
    opacity: 0.6;
}

.hint-arrow {
    font-size: 1.2rem;
    color: var(--teal);
    opacity: 0.6;
}

@keyframes hintBounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(8px); }
}

/* === Section Iris Marker === */
.section-iris-marker {
    margin-bottom: 1.5rem;
}

.mini-iris {
    width: 60px;
    height: 60px;
    animation: miniIrisSpin 30s linear infinite;
}

@keyframes miniIrisSpin {
    to { transform: rotate(360deg); }
}

/* === Section Title === */
.section-title {
    font-family: 'Cormorant Garamond', serif;
    font-weight: 600;
    font-size: clamp(1.5rem, 4vw, 3rem);
    letter-spacing: 0.05em;
    color: var(--warm-white);
    margin-bottom: 1rem;
    text-align: center;
}

.section-body {
    font-family: 'Lato', sans-serif;
    font-weight: 300;
    font-size: clamp(0.85rem, 1.4vw, 1.05rem);
    line-height: 1.9;
    color: var(--cool-gray);
    max-width: 650px;
    text-align: center;
    margin-bottom: 2.5rem;
}

/* === Section 2: Lens === */
#lens {
    background: linear-gradient(180deg, var(--abyss) 0%, rgba(27, 20, 100, 0.15) 50%, var(--abyss) 100%);
}

.lens-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: clamp(1rem, 2vw, 1.5rem);
    max-width: 850px;
    width: 100%;
}

.lens-card {
    background: rgba(27, 20, 100, 0.15);
    border: 1px solid rgba(0, 206, 201, 0.15);
    border-radius: 50% 50% 12px 12px;
    padding: clamp(1.5rem, 2.5vw, 2.5rem) clamp(1rem, 2vw, 1.5rem);
    text-align: center;
    transition: transform 400ms ease, border-color 400ms ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
}

.lens-card:hover {
    transform: translateY(-6px);
    border-color: var(--teal);
}

.lens-ring {
    width: 50px;
    height: 50px;
    border: 2px solid var(--teal);
    border-radius: 50%;
    opacity: 0.5;
    transition: opacity 300ms;
}

.lens-card:hover .lens-ring {
    opacity: 1;
}

.card-heading {
    font-family: 'Cormorant Garamond', serif;
    font-weight: 600;
    font-size: clamp(0.9rem, 1.5vw, 1.2rem);
    color: var(--teal);
}

.card-text {
    font-family: 'Lato', sans-serif;
    font-weight: 300;
    font-size: clamp(0.75rem, 1.1vw, 0.9rem);
    color: var(--cool-gray);
    line-height: 1.6;
}

/* === Section 3: Vitreous === */
#vitreous {
    background: var(--abyss);
    position: relative;
}

.vitreous-field {
    position: relative;
    width: 100%;
    max-width: 600px;
    height: 300px;
}

.vitreous-orb {
    position: absolute;
    border-radius: 50%;
    border: 1px solid rgba(0, 206, 201, 0.1);
    background: radial-gradient(circle, rgba(123, 47, 190, 0.05), transparent 70%);
}

.orb-1 {
    width: 180px; height: 180px;
    top: 10%; left: 10%;
    animation: orbFloat 12s ease-in-out infinite;
}
.orb-2 {
    width: 120px; height: 120px;
    top: 40%; right: 15%;
    animation: orbFloat 9s ease-in-out infinite reverse;
}
.orb-3 {
    width: 90px; height: 90px;
    bottom: 10%; left: 40%;
    animation: orbFloat 15s ease-in-out infinite;
}

@keyframes orbFloat {
    0%, 100% { transform: translate(0, 0); }
    33% { transform: translate(20px, -15px); }
    66% { transform: translate(-10px, 10px); }
}

.vitreous-particle {
    position: absolute;
    width: 3px;
    height: 3px;
    border-radius: 50%;
    background: rgba(223, 230, 237, 0.15);
    animation: particleDrift 8s linear infinite;
}

.p-1 { top: 20%; left: 30%; animation-delay: 0s; }
.p-2 { top: 50%; left: 60%; animation-delay: 1.5s; }
.p-3 { top: 70%; left: 20%; animation-delay: 3s; }
.p-4 { top: 30%; left: 75%; animation-delay: 4.5s; }
.p-5 { top: 80%; left: 50%; animation-delay: 6s; }

@keyframes particleDrift {
    0% { transform: translate(0, 0); opacity: 0.15; }
    50% { transform: translate(15px, -25px); opacity: 0.3; }
    100% { transform: translate(-10px, -50px); opacity: 0; }
}

/* === Section 4: Retina === */
#retina {
    background: linear-gradient(180deg, var(--abyss) 0%, rgba(231, 76, 60, 0.04) 50%, var(--abyss) 100%);
}

.retina-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: clamp(0.75rem, 1.5vw, 1.5rem);
    max-width: 700px;
    width: 100%;
}

.receptor {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    padding: clamp(1rem, 2vw, 1.5rem);
    background: rgba(10, 10, 26, 0.6);
    border: 1px solid rgba(223, 230, 237, 0.08);
    cursor: pointer;
    transition: border-color 300ms, transform 300ms;
    text-align: center;
}

.receptor:hover {
    transform: scale(1.05);
}

.receptor-rod:hover { border-color: var(--cool-gray); }
.receptor-red:hover { border-color: var(--crimson); }
.receptor-green:hover { border-color: var(--teal); }
.receptor-blue:hover { border-color: var(--purple); }

.receptor-shape {
    width: 24px;
    height: 48px;
    border-radius: 12px 12px 4px 4px;
    transition: background 300ms;
}

.receptor-rod .receptor-shape {
    background: linear-gradient(180deg, var(--cool-gray), rgba(223, 230, 237, 0.3));
}

.receptor-red .receptor-shape {
    background: linear-gradient(180deg, var(--crimson), rgba(231, 76, 60, 0.3));
}

.receptor-green .receptor-shape {
    background: linear-gradient(180deg, var(--teal), rgba(0, 206, 201, 0.3));
}

.receptor-blue .receptor-shape {
    background: linear-gradient(180deg, var(--purple), rgba(123, 47, 190, 0.3));
}

.receptor-label {
    font-family: 'Cormorant Garamond', serif;
    font-weight: 600;
    font-size: clamp(0.7rem, 1.2vw, 0.95rem);
    color: var(--warm-white);
}

.receptor-info {
    font-family: 'Lato', sans-serif;
    font-weight: 300;
    font-size: clamp(0.55rem, 0.9vw, 0.7rem);
    color: var(--cool-gray);
    opacity: 0.6;
}

/* === Section 5: Optic Nerve === */
#nerve {
    background: linear-gradient(180deg, var(--abyss) 0%, rgba(123, 47, 190, 0.06) 50%, var(--abyss) 100%);
}

.nerve-bundle {
    display: flex;
    gap: 8px;
    margin-bottom: 3rem;
    align-items: flex-end;
}

.nerve-fiber {
    width: 4px;
    height: 80px;
    background: linear-gradient(180deg, var(--teal), var(--purple));
    border-radius: 2px;
    opacity: 0;
    animation: fiberPulse 2s ease forwards;
    animation-delay: var(--delay);
}

@keyframes fiberPulse {
    0% { opacity: 0; height: 20px; }
    50% { opacity: 1; height: 100px; }
    100% { opacity: 0.7; height: 80px; }
}

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

.closing-line {
    font-family: 'Cormorant Garamond', serif;
    font-weight: 300;
    font-style: italic;
    font-size: clamp(1rem, 2vw, 1.4rem);
    color: var(--cool-gray);
    margin-bottom: 1.5rem;
}

.domain-echo {
    font-family: 'Cormorant Garamond', serif;
    font-weight: 300;
    font-size: clamp(2rem, 5vw, 4rem);
    letter-spacing: 0.15em;
    color: var(--warm-white);
    opacity: 0.4;
    animation: echoFade 4s ease-in-out infinite;
}

@keyframes echoFade {
    0%, 100% { opacity: 0.2; }
    50% { opacity: 0.5; }
}

/* === Scroll Reveal === */
.eye-section .section-title,
.eye-section .section-body,
.lens-card,
.receptor,
.nerve-fiber {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 600ms ease, transform 600ms ease;
}

.eye-section.revealed .section-title,
.eye-section.revealed .section-body,
.eye-section.revealed .lens-card,
.eye-section.revealed .receptor {
    opacity: 1;
    transform: translateY(0);
}

.eye-section.revealed .lens-card:nth-child(1) { transition-delay: 100ms; }
.eye-section.revealed .lens-card:nth-child(2) { transition-delay: 200ms; }
.eye-section.revealed .lens-card:nth-child(3) { transition-delay: 300ms; }

.eye-section.revealed .receptor:nth-child(1) { transition-delay: 100ms; }
.eye-section.revealed .receptor:nth-child(2) { transition-delay: 200ms; }
.eye-section.revealed .receptor:nth-child(3) { transition-delay: 300ms; }
.eye-section.revealed .receptor:nth-child(4) { transition-delay: 400ms; }

/* === Responsive === */
@media (max-width: 768px) {
    .lens-grid {
        grid-template-columns: 1fr;
    }

    .retina-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .lens-card {
        border-radius: 12px;
    }
}

@media (max-width: 480px) {
    .retina-grid {
        grid-template-columns: 1fr;
    }
}