/* miris.dev — Mid-Century Modern meets Sci-Fi HUD */
/* Palette & Typography Custom Properties */

:root {
    --bg-primary: #F5EDE0;
    --bg-deep: #3B2A1E;
    --text-primary: #4A3D30;
    --text-secondary: #E8DFD2;
    --accent-terracotta: #C4603A;
    --accent-teal: #3A7D7B;
    --hud-green: #5B8C6A;
    --hud-bright: #8BBF7A;
    --neutral-mid: #A89888;
    --font-display: 'Bebas Neue', sans-serif;
    --font-body: 'Source Serif 4', Georgia, serif;
    --font-hud: 'Space Grotesk', sans-serif;
    --scroll-progress: 0;
}

/* ===== RESET & BASE ===== */

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

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

body {
    font-family: var(--font-body);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.72;
    overflow-x: hidden;
}

/* ===== PROGRESS INDICATOR (Fixed HUD) ===== */

.progress-indicator {
    position: fixed;
    top: 24px;
    right: 24px;
    z-index: 100;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}

.progress-spine {
    position: relative;
    width: 1px;
    height: 120px;
    background: rgba(91, 140, 106, 0.2);
}

.progress-fill {
    position: absolute;
    top: 0;
    left: 0;
    width: 1px;
    height: calc(var(--scroll-progress) * 100%);
    background: var(--hud-green);
    transition: height 100ms linear;
}

.progress-marker {
    position: absolute;
    left: -4px;
    top: calc(var(--scroll-progress) * 100% - 4px);
    transition: top 100ms linear;
}

.zone-label-container {
    position: relative;
    width: 28px;
    height: 14px;
    overflow: hidden;
}

.zone-label {
    font-family: var(--font-hud);
    font-size: 9px;
    font-weight: 500;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--hud-green);
    text-align: center;
    transition: transform 250ms ease, opacity 250ms ease;
}

.zone-label.slide-out {
    transform: translateY(-100%);
    opacity: 0;
}

.zone-label.slide-in {
    transform: translateY(0);
    opacity: 1;
}

/* ===== STATUS DOTS ===== */

.status-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--hud-green);
    display: inline-block;
    animation: pulse-dot 3s ease-in-out infinite;
}

@keyframes pulse-dot {
    0%, 100% { background-color: var(--hud-green); opacity: 0.7; }
    50% { background-color: var(--hud-bright); opacity: 1; }
}

.progress-dot {
    margin-top: 4px;
}

/* ===== SPREAD SECTIONS ===== */

.spread {
    min-height: 100vh;
    padding: clamp(24px, 5vw, 80px);
    position: relative;
}

.spread__grid {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    column-gap: clamp(12px, 2vw, 32px);
    min-height: calc(100vh - clamp(48px, 10vw, 160px));
    align-items: center;
    position: relative;
}

.spread__grid--wide {
    align-items: start;
}

.spread__content {
    grid-column: 2 / 8;
}

.spread__panel {
    grid-column: 9 / 13;
    position: relative;
}

/* ===== HUD FRAMES ===== */

.hud-frame {
    position: relative;
    padding: 28px;
}

.hud-bracket {
    position: absolute;
    transition: transform 200ms cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.hud-bracket--tl { top: 0; left: 0; }
.hud-bracket--tr { top: 0; right: 0; }
.hud-bracket--bl { bottom: 0; left: 0; }
.hud-bracket--br { bottom: 0; right: 0; }

.hud-frame:hover .hud-bracket--tl { transform: translate(-4px, -4px); }
.hud-frame:hover .hud-bracket--tr { transform: translate(4px, -4px); }
.hud-frame:hover .hud-bracket--bl { transform: translate(-4px, 4px); }
.hud-frame:hover .hud-bracket--br { transform: translate(4px, 4px); }

.hud-frame:hover .hud-bracket path {
    stroke: var(--hud-bright);
}

/* ===== SCANLINES ===== */

.scanlines {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
    background: repeating-linear-gradient(
        to bottom,
        transparent,
        transparent 11.5px,
        rgba(91, 140, 106, 0.06) 11.5px,
        rgba(91, 140, 106, 0.06) 12px
    );
}

/* ===== HUD READOUT ===== */

.hud-readout {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.hud-readout__row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
}

.hud-label {
    font-family: var(--font-hud);
    font-size: clamp(0.65rem, 0.9vw, 0.8rem);
    font-weight: 500;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--hud-green);
    opacity: 0.7;
}

.hud-value {
    font-family: var(--font-hud);
    font-size: clamp(0.65rem, 0.9vw, 0.8rem);
    font-weight: 500;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--hud-green);
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

/* ===== HUD RULE ===== */

.hud-rule {
    height: 1px;
    background: var(--hud-green);
    opacity: 0.4;
    margin: 24px 0;
}

/* ===== TITLE SPREAD ===== */

.spread--title {
    background: var(--bg-primary);
}

.title-content {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 16px;
}

.title-heading {
    font-family: var(--font-display);
    font-size: clamp(4rem, 12vw, 12rem);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--bg-deep);
    line-height: 0.9;
}

.title-dot {
    color: var(--accent-terracotta);
}

.title-subtitle {
    font-family: var(--font-body);
    font-size: clamp(1rem, 1.2vw, 1.15rem);
    color: var(--text-primary);
    font-weight: 400;
    font-style: italic;
}

/* ===== CALDER COMPOSITIONS ===== */

.calder-composition--primary {
    position: absolute;
    right: -5vw;
    top: 10vh;
    width: 40vw;
    height: 50vh;
    pointer-events: none;
    z-index: 0;
    grid-column: 8 / 13;
}

.calder-ellipse {
    position: absolute;
    width: 28vw;
    height: 20vh;
    border-radius: 50%;
    background: var(--accent-terracotta);
    opacity: 0.85;
    top: 15%;
    left: 10%;
    transition: transform 400ms cubic-bezier(0.34, 1.56, 0.64, 1);
}

.calder-rect {
    position: absolute;
    width: 16vw;
    height: 35vh;
    background: var(--accent-teal);
    opacity: 0.75;
    top: 5%;
    right: 5%;
    transform: rotate(-8deg);
    transition: transform 400ms cubic-bezier(0.34, 1.56, 0.64, 1);
}

.calder-line--1 {
    position: absolute;
    width: 30vw;
    height: 2px;
    background: var(--text-primary);
    top: 40%;
    left: 5%;
    transform: rotate(25deg);
    transform-origin: left center;
}

.calder-line--2 {
    position: absolute;
    width: 25vw;
    height: 2px;
    background: var(--text-primary);
    top: 55%;
    left: 15%;
    transform: rotate(-15deg);
    transform-origin: left center;
}

/* Secondary Calder */
.calder-composition--secondary {
    position: relative;
    width: 100%;
    height: 300px;
}

.calder-circle-sm {
    position: absolute;
    width: 100px;
    height: 100px;
    border-radius: 50%;
    background: var(--accent-terracotta);
    opacity: 0.8;
    top: 20%;
    left: 15%;
    transition: transform 400ms cubic-bezier(0.34, 1.56, 0.64, 1);
}

.calder-rect-sm {
    position: absolute;
    width: 80px;
    height: 160px;
    background: var(--accent-teal);
    opacity: 0.7;
    top: 10%;
    right: 10%;
    transform: rotate(5deg);
    transition: transform 400ms cubic-bezier(0.34, 1.56, 0.64, 1);
}

.calder-line--3 {
    position: absolute;
    width: 80%;
    height: 2px;
    background: var(--text-primary);
    top: 65%;
    left: 10%;
    transform: rotate(-10deg);
}

/* ===== MONDRIAN DIVIDERS ===== */

.mondrian-divider {
    height: 4px;
    margin-top: 40px;
}

.mondrian-divider--1 {
    background: linear-gradient(
        to right,
        var(--accent-terracotta) 0%, var(--accent-terracotta) 35%,
        var(--accent-teal) 35%, var(--accent-teal) 55%,
        var(--bg-deep) 55%, var(--bg-deep) 75%,
        var(--neutral-mid) 75%, var(--neutral-mid) 100%
    );
}

.mondrian-divider--2 {
    background: linear-gradient(
        to right,
        var(--accent-teal) 0%, var(--accent-teal) 25%,
        var(--neutral-mid) 25%, var(--neutral-mid) 40%,
        var(--accent-terracotta) 40%, var(--accent-terracotta) 70%,
        var(--bg-deep) 70%, var(--bg-deep) 100%
    );
}

.mondrian-divider--3 {
    background: linear-gradient(
        to right,
        var(--bg-deep) 0%, var(--bg-deep) 20%,
        var(--accent-terracotta) 20%, var(--accent-terracotta) 45%,
        var(--neutral-mid) 45%, var(--neutral-mid) 65%,
        var(--accent-teal) 65%, var(--accent-teal) 100%
    );
}

.mondrian-divider--4 {
    background: linear-gradient(
        to right,
        var(--neutral-mid) 0%, var(--neutral-mid) 30%,
        var(--accent-teal) 30%, var(--accent-teal) 50%,
        var(--bg-deep) 50%, var(--bg-deep) 80%,
        var(--accent-terracotta) 80%, var(--accent-terracotta) 100%
    );
}

/* ===== SECTION HEADINGS ===== */

.section-heading {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 6vw, 5rem);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--bg-deep);
    line-height: 1;
    margin-bottom: 32px;
}

.section-heading--wide {
    grid-column: 2 / 12;
    margin-bottom: 48px;
}

.section-heading--light {
    color: var(--text-secondary);
}

/* ===== BODY TEXT ===== */

.body-text {
    max-width: 38em;
}

.body-text p {
    font-family: var(--font-body);
    font-size: clamp(1rem, 1.2vw, 1.15rem);
    line-height: 1.72;
    color: var(--text-primary);
    margin-bottom: 1.5em;
}

.body-text p:last-child {
    margin-bottom: 0;
}

.body-text--wide {
    max-width: 52em;
}

/* ===== CAPABILITY SPREAD ===== */

.spread--capability {
    background: var(--bg-primary);
}

.capability-content {
    grid-column: 2 / 8;
}

.capability-panel {
    grid-column: 9 / 13;
}

/* ===== SYSTEMS SPREAD ===== */

.spread--systems {
    background: var(--bg-primary);
}

.systems-panels {
    grid-column: 2 / 12;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: clamp(16px, 3vw, 40px);
}

.system-panel {
    position: relative;
}

.system-panel--1 { transform: translateY(0); }
.system-panel--2 { transform: translateY(30px); }
.system-panel--3 { transform: translateY(-10px); }
.system-panel--4 { transform: translateY(20px); }

.system-panel .hud-frame {
    border: 1px solid rgba(91, 140, 106, 0.15);
    min-height: 200px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.system-panel__label {
    font-family: var(--font-hud);
    font-size: clamp(0.7rem, 1vw, 0.85rem);
    font-weight: 500;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--hud-green);
    margin-bottom: 16px;
}

.system-panel__desc {
    font-family: var(--font-body);
    font-size: clamp(0.85rem, 1vw, 0.95rem);
    line-height: 1.65;
    color: var(--text-primary);
    margin-bottom: 20px;
}

.system-panel__status {
    display: flex;
    align-items: center;
    gap: 8px;
}

/* ===== PHILOSOPHY SPREAD ===== */

.spread--philosophy {
    background: var(--bg-primary);
}

.philosophy-content {
    grid-column: 2 / 10;
}

.philosophy-opening {
    font-family: var(--font-body);
    font-size: clamp(1.4rem, 2.5vw, 2rem);
    line-height: 1.4;
    color: var(--text-primary);
    font-weight: 600;
    font-style: italic;
    border: none;
    padding: 0;
    margin-bottom: 32px;
}

.philosophy-panel {
    grid-column: 11 / 13;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

/* ===== WIREFRAME ===== */

.wireframe-container {
    position: relative;
}

.wireframe-rotate {
    animation: wireframe-spin 30s linear infinite;
    transform-origin: 60px 60px;
}

@keyframes wireframe-spin {
    to { transform: rotate(360deg); }
}

/* ===== SIGNAL SPREAD ===== */

.spread--signal {
    background: var(--bg-deep);
    display: flex;
    align-items: center;
    justify-content: center;
}

.signal-content {
    grid-column: 3 / 11;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 32px;
}

.signal-text {
    font-family: var(--font-body);
    font-size: clamp(1rem, 1.4vw, 1.2rem);
    color: var(--text-secondary);
    max-width: 36em;
    line-height: 1.72;
}

.signal-contact {
    margin-top: 24px;
}

.hud-reticle {
    position: relative;
    padding: 24px 48px;
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}

.hud-reticle .hud-bracket--tl { top: 0; left: 0; }
.hud-reticle .hud-bracket--tr { top: 0; right: 0; }
.hud-reticle .hud-bracket--bl { bottom: 0; left: 0; }
.hud-reticle .hud-bracket--br { bottom: 0; right: 0; }

.hud-reticle .hud-bracket {
    position: absolute;
    transition: transform 200ms cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.hud-reticle:hover .hud-bracket--tl { transform: translate(-4px, -4px); }
.hud-reticle:hover .hud-bracket--tr { transform: translate(4px, -4px); }
.hud-reticle:hover .hud-bracket--bl { transform: translate(-4px, 4px); }
.hud-reticle:hover .hud-bracket--br { transform: translate(4px, 4px); }

.hud-reticle:hover .hud-bracket path {
    stroke: var(--hud-bright);
}

.signal-link {
    font-family: var(--font-hud);
    font-size: clamp(0.9rem, 1.3vw, 1.1rem);
    font-weight: 500;
    letter-spacing: 0.12em;
    color: var(--text-secondary);
    text-decoration: none;
    background-image: linear-gradient(var(--hud-green), var(--hud-green));
    background-position: 0 100%;
    background-repeat: no-repeat;
    background-size: 0% 1.5px;
    transition: background-size 300ms ease;
    padding-bottom: 2px;
}

.signal-link:hover {
    background-size: 100% 1.5px;
}

.signal-dot {
    margin-top: 4px;
}

/* ===== SCROLL-DRIVEN HUD ACTIVATION ===== */

.hud-bracket {
    opacity: 0;
    transition: opacity 300ms ease, transform 200ms cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.spread.is-visible .hud-bracket {
    opacity: 1;
}

.status-dot {
    opacity: 0;
    animation: none;
}

.spread.is-visible .status-dot,
.progress-indicator .status-dot {
    opacity: 0.7;
    animation: pulse-dot 3s ease-in-out infinite;
}

/* ===== RESPONSIVE: TABLET ===== */

@media (max-width: 1024px) {
    .spread__grid {
        grid-template-columns: repeat(8, 1fr);
    }

    .spread__content {
        grid-column: 1 / 6;
    }

    .spread__panel {
        grid-column: 1 / 9;
        margin-top: 48px;
    }

    .calder-composition--primary {
        grid-column: 5 / 9;
        right: -2vw;
        width: 50vw;
    }

    .section-heading--wide {
        grid-column: 1 / 9;
    }

    .systems-panels {
        grid-column: 1 / 9;
    }

    .philosophy-content {
        grid-column: 1 / 8;
    }

    .philosophy-panel {
        grid-column: 1 / 9;
    }

    .signal-content {
        grid-column: 1 / 9;
    }
}

/* ===== RESPONSIVE: MOBILE ===== */

@media (max-width: 640px) {
    .spread {
        padding: clamp(16px, 4vw, 32px);
    }

    .spread__grid {
        grid-template-columns: 1fr;
    }

    .spread__content,
    .spread__panel,
    .section-heading--wide,
    .systems-panels,
    .philosophy-content,
    .philosophy-panel,
    .signal-content {
        grid-column: 1;
    }

    .spread__panel {
        margin-top: 32px;
    }

    .calder-composition--primary {
        position: relative;
        grid-column: 1;
        right: 0;
        top: 0;
        width: 100%;
        height: 40vh;
    }

    .systems-panels {
        grid-template-columns: 1fr;
    }

    .system-panel--1,
    .system-panel--2,
    .system-panel--3,
    .system-panel--4 {
        transform: translateY(0);
    }

    .title-heading {
        font-size: clamp(3rem, 15vw, 6rem);
    }

    .progress-indicator {
        top: 12px;
        right: 12px;
    }

    .progress-spine {
        height: 80px;
    }
}

/* ===== REDUCED MOTION ===== */

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }

    .wireframe-rotate {
        animation: none;
    }
}