/* lunge.dev - Scandinavian Athletic Studio Design */
/* Colors: #ff8a80, #636e72, #f5f0eb, #a8e6cf, #ffd3b6, #dcedc1, #b2bec3, #2d3436 */
/* Fonts: Space Mono (display), Inter (body) */

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

:root {
    --coral: #ff8a80;
    --slate: #636e72;
    --cream: #f5f0eb;
    --mint: #a8e6cf;
    --peach: #ffd3b6;
    --sage: #dcedc1;
    --silver: #b2bec3;
    --charcoal: #2d3436;
    --ice-blue: #b8d4e3;
    --warm-gray: #e0d8cf;
    --white: #fefefe;
    --font-display: 'Space Mono', monospace;
    --font-body: 'Inter', sans-serif;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-body);
    background-color: var(--cream);
    color: var(--charcoal);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

/* Grid Overlay */
.grid-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1000;
    opacity: 0.04;
}

.grid-line {
    position: absolute;
    top: 0;
    height: 100%;
    width: 1px;
    background-color: var(--charcoal);
}

/* Progress Track */
.progress-track {
    position: fixed;
    right: 2rem;
    top: 50%;
    transform: translateY(-50%);
    z-index: 100;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.progress-phases {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.phase-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--silver);
    transition: all 0.6s cubic-bezier(0.22, 1, 0.36, 1);
    cursor: pointer;
}

.phase-dot.active {
    background-color: var(--coral);
    transform: scale(1.5);
    box-shadow: 0 0 12px rgba(255, 138, 128, 0.4);
}

/* Spreads - Magazine Layout */
.spread {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    padding: 4rem 6rem;
}

.spread-grid {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: 2rem;
    width: 100%;
    max-width: 1400px;
    position: relative;
    z-index: 2;
}

/* Column arrangements */
.col-left {
    grid-column: 1 / 6;
}

.col-right {
    grid-column: 7 / 13;
}

.col-wide {
    grid-column: 1 / 8;
}

.col-narrow {
    grid-column: 8 / 13;
}

.col-center {
    grid-column: 3 / 11;
    text-align: center;
}

.col-full {
    grid-column: 1 / 13;
    text-align: center;
}

/* Spread Numbers */
.spread-number {
    position: absolute;
    bottom: 2rem;
    left: 3rem;
    font-family: var(--font-display);
    font-size: clamp(60px, 10vw, 140px);
    font-weight: 700;
    color: var(--charcoal);
    opacity: 0.03;
    line-height: 1;
    z-index: 1;
    letter-spacing: 0.04em;
}

/* Typography */
.phase-label {
    display: block;
    font-family: var(--font-display);
    font-size: 0.75rem;
    font-weight: 400;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--slate);
    margin-bottom: 2rem;
}

.display-heading {
    font-family: var(--font-display);
    font-size: clamp(36px, 6vw, 80px);
    font-weight: 700;
    letter-spacing: 0.04em;
    line-height: 1.15;
    color: var(--charcoal);
    margin-bottom: 2rem;
}

.display-large {
    font-size: clamp(48px, 8vw, 120px);
}

.heading-accent {
    color: var(--coral);
}

.body-text {
    font-family: var(--font-body);
    font-size: clamp(15px, 1.2vw, 18px);
    font-weight: 300;
    line-height: 1.75;
    color: var(--slate);
    max-width: 520px;
}

.body-centered {
    margin-left: auto;
    margin-right: auto;
}

.intro-text {
    font-size: clamp(16px, 1.4vw, 20px);
}

/* Watercolor Washes */
.watercolor-wash {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    z-index: 0;
    opacity: 0;
    transition: opacity 1.2s cubic-bezier(0.22, 1, 0.36, 1);
}

.spread.visible .watercolor-wash {
    opacity: 1;
}

.wash-stance {
    width: 60vw;
    height: 60vh;
    top: 10%;
    right: -10%;
    background: radial-gradient(ellipse at center, rgba(168, 230, 207, 0.35) 0%, rgba(220, 237, 193, 0.2) 40%, transparent 70%);
}

.wash-load {
    width: 50vw;
    height: 70vh;
    bottom: -10%;
    left: -5%;
    background: radial-gradient(ellipse at center, rgba(255, 211, 182, 0.3) 0%, rgba(255, 138, 128, 0.15) 40%, transparent 70%);
}

.wash-drive {
    width: 80vw;
    height: 80vh;
    top: 10%;
    left: 10%;
    background: radial-gradient(ellipse at center, rgba(255, 138, 128, 0.25) 0%, rgba(168, 230, 207, 0.15) 50%, transparent 70%);
}

.wash-extend {
    width: 55vw;
    height: 65vh;
    top: 5%;
    right: -5%;
    background: radial-gradient(ellipse at center, rgba(220, 237, 193, 0.35) 0%, rgba(168, 230, 207, 0.2) 40%, transparent 70%);
}

.wash-recover {
    width: 70vw;
    height: 60vh;
    bottom: 5%;
    left: 15%;
    background: radial-gradient(ellipse at center, rgba(178, 190, 195, 0.25) 0%, rgba(245, 240, 235, 0.15) 40%, transparent 70%);
}

/* Spread Content Animations */
.spread-content {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s cubic-bezier(0.22, 1, 0.36, 1),
                transform 0.8s cubic-bezier(0.22, 1, 0.36, 1);
}

.spread.visible .spread-content {
    opacity: 1;
    transform: translateY(0);
}

.spread.visible .spread-content:nth-child(2) {
    transition-delay: 0.2s;
}

/* Stance Section */
.stance-motif {
    margin-top: 3rem;
}

.stance-svg {
    width: 160px;
    height: 160px;
    opacity: 0;
    transform: scale(0.8);
    transition: opacity 1s ease 0.5s, transform 1s ease 0.5s;
}

.spread.visible .stance-svg {
    opacity: 1;
    transform: scale(1);
}

/* Load Section */
.metric-block {
    margin-top: 2rem;
    padding: 1.5rem 0;
    border-top: 1px solid rgba(178, 190, 195, 0.3);
}

.metric-value {
    display: block;
    font-family: var(--font-display);
    font-size: clamp(28px, 3vw, 42px);
    font-weight: 700;
    color: var(--charcoal);
    letter-spacing: 0.04em;
}

.metric-label {
    display: block;
    font-family: var(--font-body);
    font-size: 0.8rem;
    font-weight: 400;
    color: var(--silver);
    margin-top: 0.5rem;
    letter-spacing: 0.02em;
}

.stride-lines {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 200px;
    z-index: 1;
    opacity: 0;
    transition: opacity 1s ease 0.6s;
}

.spread.visible .stride-lines {
    opacity: 1;
}

.stride-lines svg {
    width: 100%;
    height: 100%;
}

.stride-lines path {
    stroke-linecap: round;
    filter: drop-shadow(0 0 3px var(--ice-blue));
}

/* Drive Section */
.spread-drive {
    background-color: var(--charcoal);
}

.spread-drive .display-heading {
    color: var(--cream);
}

.spread-drive .phase-label {
    color: var(--silver);
}

.spread-drive .body-text {
    color: var(--silver);
}

.spread-drive .spread-number {
    color: var(--cream);
    opacity: 0.05;
}

.drive-particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    pointer-events: none;
}

.drive-particle {
    position: absolute;
    border-radius: 50%;
    opacity: 0;
    animation: particleFloat 3s ease-in-out infinite;
}

@keyframes particleFloat {
    0% {
        opacity: 0;
        transform: translateY(20px) scale(0.5);
    }
    50% {
        opacity: 0.6;
        transform: translateY(-10px) scale(1);
    }
    100% {
        opacity: 0;
        transform: translateY(-40px) scale(0.5);
    }
}

/* Extend Section */
.extend-visual {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100%;
}

.extend-svg {
    width: 100%;
    max-width: 280px;
    height: auto;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 1s ease 0.3s, transform 1s ease 0.3s;
}

.spread.visible .extend-svg {
    opacity: 1;
    transform: translateY(0);
}

.feature-list {
    margin-top: 2.5rem;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.75rem 0;
    opacity: 0;
    transform: translateX(20px);
    transition: opacity 0.5s ease, transform 0.5s ease;
}

.spread.visible .feature-item {
    opacity: 1;
    transform: translateX(0);
}

.spread.visible .feature-item:nth-child(1) { transition-delay: 0.4s; }
.spread.visible .feature-item:nth-child(2) { transition-delay: 0.55s; }
.spread.visible .feature-item:nth-child(3) { transition-delay: 0.7s; }
.spread.visible .feature-item:nth-child(4) { transition-delay: 0.85s; }

.feature-marker {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background-color: var(--mint);
    flex-shrink: 0;
}

.feature-text {
    font-family: var(--font-display);
    font-size: 0.85rem;
    font-weight: 400;
    letter-spacing: 0.02em;
    color: var(--slate);
}

/* Recover Section */
.recover-text {
    max-width: 640px;
    margin-bottom: 3rem;
}

.cta-block {
    margin-top: 2rem;
}

.cta-link {
    display: inline-flex;
    align-items: center;
    gap: 1rem;
    text-decoration: none;
    color: var(--charcoal);
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    padding: 1rem 2rem;
    border: 1px solid var(--charcoal);
    transition: all 0.4s cubic-bezier(0.22, 1, 0.36, 1);
}

.cta-link:hover {
    background-color: var(--charcoal);
    color: var(--cream);
}

.cta-link:hover .cta-arrow {
    transform: translateX(4px);
}

.cta-arrow {
    transition: transform 0.4s cubic-bezier(0.22, 1, 0.36, 1);
}

.pulse-ring {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 300px;
    height: 300px;
    border-radius: 50%;
    border: 1px solid rgba(168, 230, 207, 0.15);
    z-index: 0;
    animation: pulseExpand 4s ease-in-out infinite;
}

.pulse-ring::before,
.pulse-ring::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    border-radius: 50%;
    border: 1px solid rgba(168, 230, 207, 0.1);
}

.pulse-ring::before {
    width: 200px;
    height: 200px;
    animation: pulseExpand 4s ease-in-out 0.5s infinite;
}

.pulse-ring::after {
    width: 400px;
    height: 400px;
    animation: pulseExpand 4s ease-in-out 1s infinite;
}

@keyframes pulseExpand {
    0%, 100% {
        opacity: 0.3;
        transform: translate(-50%, -50%) scale(0.95);
    }
    50% {
        opacity: 0.6;
        transform: translate(-50%, -50%) scale(1.05);
    }
}

/* Warm Gray Accent */
.spread + .spread {
    border-top: 1px solid #e0d8cf;
}

/* White Background Accent */
.spread-recover {
    background-color: #fefefe;
}

/* Footer */
.site-footer {
    padding: 3rem 6rem;
    border-top: 1px solid rgba(178, 190, 195, 0.2);
}

.footer-grid {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1400px;
    margin: 0 auto;
}

.footer-domain {
    font-family: var(--font-display);
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    color: var(--charcoal);
}

.footer-tagline {
    font-family: var(--font-body);
    font-size: 0.8rem;
    font-weight: 300;
    color: var(--silver);
    letter-spacing: 0.02em;
}

/* Responsive */
@media (max-width: 1024px) {
    .spread {
        padding: 3rem 3rem;
    }

    .col-left,
    .col-right,
    .col-wide,
    .col-narrow {
        grid-column: 1 / 13;
    }

    .col-center {
        grid-column: 1 / 13;
    }

    .progress-track {
        right: 1rem;
    }

    .site-footer {
        padding: 2rem 3rem;
    }
}

@media (max-width: 768px) {
    .spread {
        padding: 3rem 1.5rem;
    }

    .spread-grid {
        gap: 1.5rem;
    }

    .progress-track {
        display: none;
    }

    .site-footer {
        padding: 2rem 1.5rem;
    }

    .footer-grid {
        flex-direction: column;
        gap: 0.5rem;
        text-align: center;
    }

    .extend-visual {
        margin-bottom: 2rem;
    }
}