@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:ital,wght@0,400;0,700;1,400&family=IBM+Plex+Mono:wght@300;400;500&family=IBM+Plex+Sans:wght@300;400;500&display=swap');

:root {
    --bg: #0d0e0f;
    --bg2: #131415;
    --rule: #252628;
    --text: #e8e6e1;
    --muted: #7a7874;
    --accent: #c8a96e;
    --accent2: #8fb8d4;
    --card: #161718;
}

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

html {
    height: 100%;
}

html, body {
    overflow-x: hidden;
}

body {
    min-height: 100%;
    background: var(--bg);
    color: var(--text);
    font-family: 'IBM Plex Sans', sans-serif;
    font-weight: 300;
    line-height: 1.7;
}

/* NAV */
nav {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 200;
    background: rgba(13,14,15,0.88);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--rule);
}
.nav-inner {
    max-width: 1100px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 2rem;
    height: 58px;
}
.nav-logo {
    font-family: 'Playfair Display', serif;
    font-size: 1.1rem;
    color: var(--text);
    text-decoration: none;
    letter-spacing: 0.02em;
}
.nav-logo span { color: var(--accent); font-style: italic; }
.nav-links { list-style: none; display: flex; gap: 1.5rem; flex-wrap: wrap; }
.nav-links a {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.68rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--muted);
    text-decoration: none;
    transition: color 0.2s;
}
.nav-links a:hover,
.nav-links a.active { color: var(--accent); }

/* DECK */
.deck {
    position: relative;
    width: 100%;
    height: 100vh;
    padding-top: 58px;
}

.slide {
    position: absolute;
    inset: 58px 0 0 0;
    display: flex;
    flex-direction: column;
    padding: 2.5rem 2rem 5.5rem;
    overflow-x: hidden;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    overscroll-behavior-y: contain;
    touch-action: pan-y;
    opacity: 0;
    pointer-events: none;
    transform: translateX(40px);
    transition: opacity 0.45s ease, transform 0.45s ease;
}
.slide.active {
    opacity: 1;
    pointer-events: all;
    transform: translateX(0);
}
.slide.exit-left {
    transform: translateX(-40px);
}

.slide-inner {
    flex: 1;
    max-width: 1100px;
    width: 100%;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    min-height: 0;
}

/* SLIDE HEADER (matches PDF masthead) */
.slide-masthead {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 2rem;
    padding-bottom: 1.5rem;
    margin-bottom: 2rem;
    border-bottom: 1px solid var(--rule);
    flex-shrink: 0;
}
.masthead-contact {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.68rem;
    letter-spacing: 0.04em;
    color: var(--muted);
    line-height: 1.9;
}
.masthead-contact a {
    color: var(--muted);
    text-decoration: none;
    transition: color 0.2s;
}
.masthead-contact a:hover { color: var(--accent); }
.masthead-identity { text-align: right; }
.masthead-name {
    font-family: 'Playfair Display', serif;
    font-size: 1.5rem;
    font-weight: 400;
    letter-spacing: 0.08em;
    margin-bottom: 0.25rem;
}
.masthead-subtitle {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.58rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--muted);
    max-width: 320px;
    margin-left: auto;
    line-height: 1.6;
}

.slide-role {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.72rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 1.5rem;
    flex-shrink: 0;
}

.slide-body {
    flex: 1;
    display: grid;
    grid-template-columns: minmax(220px, 1fr) 1.4fr;
    gap: 3rem;
    min-height: 0;
    align-items: stretch;
}

.slide-visual {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--rule);
    background: var(--card);
    min-height: 200px;
    max-height: min(480px, calc(100vh - 280px));
    padding: 1rem;
    overflow: hidden;
}
.slide-visual img {
    display: block;
    width: auto;
    height: auto;
    max-width: 100%;
    max-height: min(440px, calc(100vh - 320px));
    object-fit: contain;
    object-position: center;
}
.slide-visual-placeholder {
    min-height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    text-align: center;
}
.slide-visual-placeholder span {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.65rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--muted);
    opacity: 0.6;
}

.slide-content {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.content-block h3 {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.75rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--accent2);
    margin-bottom: 0.9rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--rule);
}
.content-block p,
.content-block li {
    font-size: 0.88rem;
    color: var(--muted);
    line-height: 1.75;
}
.content-block ul {
    list-style: none;
    padding: 0;
}
.content-block li {
    padding: 0.3rem 0 0.3rem 1rem;
    position: relative;
}
.content-block li::before {
    content: '—';
    position: absolute;
    left: 0;
    color: var(--accent);
    font-size: 0.75rem;
}
.content-block .highlight {
    color: var(--text);
    font-weight: 400;
}

/* TITLE SLIDE */
.slide-title-only .slide-body {
    grid-template-columns: 1fr;
    align-items: center;
    justify-items: center;
    text-align: center;
}
.title-slide-content { max-width: 640px; }
.title-slide-content h1 {
    font-family: 'Playfair Display', serif;
    font-size: clamp(3rem, 8vw, 5.5rem);
    font-weight: 400;
    line-height: 1.05;
    margin-bottom: 1.5rem;
}
.title-slide-content h1 em {
    color: var(--accent);
    font-style: italic;
}
.title-slide-content .title-tagline {
    font-size: 1.05rem;
    color: var(--muted);
    margin-bottom: 2.5rem;
    line-height: 1.8;
}
.title-slide-meta {
    display: flex;
    justify-content: center;
    gap: 2.5rem;
    flex-wrap: wrap;
    margin-bottom: 2.5rem;
}
.title-meta-item {
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
    text-align: left;
}
.title-meta-label {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.62rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--muted);
}
.title-meta-value { font-size: 0.92rem; }
.title-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}
.btn {
    display: inline-block;
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.72rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    text-decoration: none;
    padding: 0.85rem 2rem;
    border: 1px solid var(--accent);
    color: var(--accent);
    transition: background 0.2s, color 0.2s;
    cursor: pointer;
    background: transparent;
}
.btn:hover { background: var(--accent); color: var(--bg); }
.btn-ghost {
    border-color: var(--rule);
    color: var(--muted);
}
.btn-ghost:hover {
    background: var(--card);
    color: var(--text);
    border-color: var(--muted);
}

/* CONTROLS */
.deck-controls {
    position: fixed;
    bottom: 0; left: 0; right: 0;
    z-index: 150;
    background: rgba(13,14,15,0.92);
    backdrop-filter: blur(12px);
    border-top: 1px solid var(--rule);
    padding: 0.9rem 2rem;
}
.controls-inner {
    max-width: 1100px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}
.slide-counter {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.72rem;
    letter-spacing: 0.08em;
    color: var(--muted);
    min-width: 4rem;
}
.progress-track {
    flex: 1;
    height: 2px;
    background: var(--rule);
    position: relative;
    max-width: 400px;
    margin: 0 auto;
}
.progress-fill {
    position: absolute;
    left: 0; top: 0;
    height: 100%;
    background: var(--accent);
    transition: width 0.35s ease;
}
.control-btns { display: flex; gap: 0.5rem; }
.control-btn {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.68rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    background: var(--card);
    border: 1px solid var(--rule);
    color: var(--text);
    padding: 0.5rem 1rem;
    cursor: pointer;
    transition: border-color 0.2s, color 0.2s;
}
.control-btn:hover:not(:disabled) {
    border-color: var(--accent);
    color: var(--accent);
}
.control-btn:disabled {
    opacity: 0.35;
    cursor: not-allowed;
}

.slide-dots {
    display: flex;
    gap: 0.4rem;
    justify-content: center;
}
.slide-dot {
    width: 6px; height: 6px;
    border-radius: 50%;
    background: var(--muted);
    opacity: 0.35;
    border: none;
    cursor: pointer;
    padding: 0;
    transition: opacity 0.2s, background 0.2s;
}
.slide-dot.active {
    background: var(--accent);
    opacity: 1;
}

/* KEYBOARD HINT */
.keyboard-hint {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.62rem;
    letter-spacing: 0.06em;
    color: var(--muted);
    opacity: 0.6;
}
.keyboard-hint kbd {
    display: inline-block;
    padding: 0.1rem 0.35rem;
    border: 1px solid var(--rule);
    font-size: 0.6rem;
    margin: 0 0.15rem;
}

@media (min-width: 901px) {
    html, body {
        height: 100%;
        overflow: hidden;
    }
}

@media (max-width: 900px) {
    .deck {
        height: 100vh;
        height: 100dvh;
    }

    .slide {
        inset: 58px 0 0 0;
        padding: 1.5rem 1.25rem 8rem;
    }

    .slide-inner,
    .slide-body {
        flex: none;
        min-height: auto;
    }

    .slide-body { grid-template-columns: 1fr; }
    .slide-content { grid-template-columns: 1fr; }

    .slide-visual {
        max-height: none;
        height: auto;
    }
    .slide-visual img {
        max-height: min(280px, 40vh);
    }

    .deck-controls {
        padding: 0.75rem 1rem;
    }

    .controls-inner {
        flex-wrap: wrap;
        row-gap: 0.6rem;
    }

    .progress-track {
        order: 3;
        flex-basis: 100%;
        max-width: none;
    }

    .keyboard-hint { display: none; }
    .nav-links { display: none; }
    .masthead-subtitle { max-width: none; }
}

@media (max-width: 600px) {
    .slide { padding: 1.25rem 1rem 8.5rem; }
    .slide-masthead { flex-direction: column; gap: 1rem; }
    .masthead-identity { text-align: left; }
    .masthead-subtitle { margin-left: 0; }
    .nav-inner { padding: 0 1rem; }
}