@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;600;700;800;900&family=Noto+Sans+TC:wght@400;500;700;900&display=swap');

/* =========================================================
   1. Design tokens
   ========================================================= */
:root {
    --r-background-color: #fffaf2;
    --r-main-font: 'Inter', 'Noto Sans TC', sans-serif;
    --r-heading-font: 'Inter', 'Noto Sans TC', sans-serif;
    --r-main-color: #1f2328;
    --r-heading-color: #1f2328;
    --r-link-color: #0f62fe;
    --r-selection-background-color: #ffd166;
    --r-main-font-size: clamp(16px, 2.25vw, 34px);

    --brand-ink: #1f2328;
    --brand-paper: #fffaf2;
    --brand-pink: #ff7ab6;
    --brand-yellow: #ffe45e;
    --brand-blue: #7bdff2;
    --brand-green: #b8f2c2;
    --brand-lilac: #cdb4ff;

    --border-strong: 5px;
    --border-normal: 4px;
    --border-small: 3px;
    --shadow-lg: 12px 12px 0 var(--brand-ink);
    --shadow-md: 8px 8px 0 var(--brand-ink);
    --shadow-sm: 5px 5px 0 var(--brand-ink);
    --shadow-xs: 3px 3px 0 var(--brand-ink);

    --code-bg: #282a36;
    --code-shadow: #ff7ab6;
}

/* =========================================================
   2. Reveal base reset / typography
   ========================================================= */
.reveal,
.reveal * {
    box-sizing: border-box;
}

.reveal {
    font-family: var(--r-main-font);
    font-size: var(--r-main-font-size);
    background:
        radial-gradient(circle at 16px 16px, rgba(31, 35, 40, 0.08) 2px, transparent 2px),
        var(--r-background-color);
    background-size: 32px 32px;
    color: var(--r-main-color);
}

.reveal .slides section {
    padding: 42px;
}

.reveal h1,
.reveal h2,
.reveal h3,
.reveal h4 {
    text-transform: none;
    font-weight: 900;
    line-height: 1.08;
    letter-spacing: -0.035em;
}

.reveal h1 { font-size: 4.2em; }
.reveal h3 { font-size: 1.55em; }
.reveal h4 { font-size: 1.2em; }

.reveal h2 {
    display: inline-block;
    margin-bottom: 0.55em;
    padding: 0.12em 0.35em;
    background: var(--brand-yellow);
    border: var(--border-normal) solid var(--brand-ink);
    box-shadow: var(--shadow-md);
    font-size: 2.25em;
}

.reveal p,
.reveal li {
    line-height: 1.45;
}

/* =========================================================
   3. Generic components
   ========================================================= */
.highlight-box {
    margin: 24px 0;
    padding: 24px;
    color: var(--r-main-color);
    background: var(--brand-yellow);
    border: var(--border-normal) solid var(--brand-ink);
    box-shadow: var(--shadow-md);
    font-weight: 700;
}

.reveal a {
    color: var(--brand-ink);
}

.hero-card-side a,
.brand-footer a {
    display: inline-flex;
    width: fit-content;
    max-width: 100%;
    align-items: center;
    color: var(--brand-ink);
    text-decoration: none;
    border: var(--border-small) solid var(--brand-ink);
    border-radius: 999px;
    background: var(--brand-paper);
    box-shadow: 4px 4px 0 var(--brand-ink);
    padding: 3px 11px 4px;
    transition: transform 120ms ease, box-shadow 120ms ease, background 120ms ease;
}

.hero-card-side a:hover,
.brand-footer a:hover {
    background: var(--brand-pink);
    transform: translate(2px, 2px);
    box-shadow: 2px 2px 0 var(--brand-ink);
}

/* =========================================================
   4. Hero / title slide - desktop design version
   ========================================================= */
.hero-slide {
    position: relative;
    min-height: 68vh;
    padding-top: 18px;
    text-align: left;
}

.hero-slide::before,
.hero-slide::after {
    content: '';
    position: absolute;
    z-index: -1;
    border: var(--border-normal) solid var(--brand-ink);
    box-shadow: var(--shadow-sm);
}

.hero-slide::before {
    width: 128px;
    height: 128px;
    top: 9%;
    right: 4%;
    background: var(--brand-blue);
    transform: rotate(8deg);
}

.hero-slide::after {
    width: 92px;
    height: 92px;
    left: 3%;
    bottom: 0;
    background: var(--brand-pink);
    border-radius: 50%;
    transform: rotate(-12deg);
}

.hero-card {
    color: var(--brand-ink);
    border: var(--border-strong) solid var(--brand-ink);
    box-shadow: var(--shadow-lg);
}

.hero-card-main {
    width: min(720px, 74%);
    padding: 34px 42px 42px;
    background: var(--brand-yellow);
    transform: rotate(-1.2deg);
}

.hero-card-main h1 {
    margin: 0;
    font-size: clamp(58px, 5.6vw, 104px);
    line-height: 0.96;
    letter-spacing: -0.07em;
}

.eyebrow {
    display: inline-block;
    margin: 0 0 20px;
    padding: 6px 14px;
    background: var(--brand-paper);
    border: var(--border-small) solid var(--brand-ink);
    box-shadow: var(--shadow-sm);
    font-size: max(20px, 0.65em);
    font-weight: 900;
    letter-spacing: 0.04em;
}

.hero-card-side {
    position: absolute;
    right: 2%;
    bottom: 4%;
    display: flex;
    flex-direction: column;
    gap: 8px;
    min-width: 250px;
    padding: 18px 22px;
    background: var(--brand-blue);
    font-size: max(20px, 0.7em);
    transform: rotate(2deg);
}

.hero-card-side strong {
    font-size: 1.35em;
    font-weight: 900;
}

.mini-label {
    width: fit-content;
    padding: 3px 9px;
    background: var(--brand-pink);
    border: var(--border-small) solid var(--brand-ink);
    font-weight: 900;
}

.hero-sticker,
.hero-badge {
    position: absolute;
    border: var(--border-normal) solid var(--brand-ink);
    box-shadow: var(--shadow-sm);
    font-weight: 900;
}

.hero-sticker {
    top: 0;
    right: 4%;
    padding: 12px 18px;
    background: var(--brand-lilac);
    font-size: max(18px, 0.62em);
    transform: rotate(9deg);
}

.hero-badge {
    left: 8%;
    bottom: -2%;
    padding: 12px 18px;
    background: var(--brand-green);
    font-size: max(18px, 0.62em);
    transform: rotate(-2deg);
}

/* =========================================================
   5. Profile slides
   ========================================================= */
/* Dedicated Tudoumei profile slide */
.tudoumei-profile,
.pet-profile {
    max-width: 920px;
    margin: 0 auto;
}

.tudoumei-profile h2,
.pet-profile h2 {
    margin-bottom: 32px;
}

.tudoumei-profile-grid,
.pet-profile-grid {
    display: grid;
    grid-template-columns: 190px minmax(0, 1fr);
    gap: 32px;
    align-items: center;
    margin-bottom: 28px;
}

.profile-avatar,
.pet-avatar {
    width: 190px;
    height: 190px;
    border: var(--border-normal) solid var(--brand-ink);
    box-shadow: var(--shadow-sm);
    background: var(--brand-paper);
    transform: rotate(-2deg);
}

.pet-avatar {
    padding: 0;
    background: var(--brand-lilac);
    transform: rotate(2deg);
    overflow: hidden;
    border-radius: 22px;
    box-shadow: 8px 8px 0 var(--brand-pink);
}

.profile-avatar img,
.pet-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    margin: 0;
}

.pet-avatar img {
    object-fit: cover;
    object-position: center center;
    border: none;
}

.profile-card,
.self-intro-card,
.pet-card,
.pet-intro-card {
    text-align: left;
    color: var(--brand-ink);
    border: var(--border-normal) solid var(--brand-ink);
    box-shadow: var(--shadow-md);
}

.profile-card,
.pet-card {
    padding: 22px 26px;
    background: var(--brand-blue);
    font-size: max(21px, 0.72em);
    line-height: 1.35;
    transform: rotate(0.6deg);
}

.pet-card {
    background: var(--brand-lilac);
    transform: rotate(-0.6deg);
}

.profile-card p,
.pet-card p {
    margin: 0.22em 0;
}

.profile-label {
    display: inline-block;
    margin-bottom: 12px;
    padding: 4px 12px;
    background: var(--brand-pink);
    border: var(--border-small) solid var(--brand-ink);
    box-shadow: 4px 4px 0 var(--brand-ink);
    font-weight: 900;
}

.self-intro-card,
.pet-intro-card {
    padding: 24px 30px;
    background: var(--brand-yellow);
    font-size: max(22px, 0.78em);
    font-weight: 700;
    line-height: 1.5;
}

.pet-intro-card {
    background: var(--brand-green);
}

/* Global Image Constraint to prevent "breaking the sky" */
.reveal img {
    max-width: 100%;
    max-height: 50vh; /* Keep images within half a slide height by default */
    object-fit: contain;
    border: var(--border-small) solid var(--brand-ink);
    box-shadow: var(--shadow-sm);
}

.reveal .hero-slide img,
.reveal .profile-avatar img,
.reveal .pet-avatar img {
    box-shadow: none;
    border: none;
    max-height: none;
}

.two-column-slide {
    display: grid;
    grid-template-columns: minmax(300px, 0.95fr) minmax(380px, 1.25fr);
    gap: 34px;
    align-items: center;
    max-width: 980px;
    margin: 0 auto;
}

.slide-card {
    padding: 28px 30px;
    border: var(--border-normal) solid var(--brand-ink);
    box-shadow: var(--shadow-sm);
    text-align: left;
    transform: rotate(-0.4deg);
}

.slide-card-blue {
    background: var(--brand-blue);
}

.slide-card-yellow {
    background: var(--brand-yellow);
}

.slide-card-green {
    background: var(--brand-green);
}

.slide-card-pink {
    background: var(--brand-pink);
}

.slide-card strong {
    display: inline-block;
    margin-bottom: 16px;
    padding: 4px 10px;
    background: var(--brand-pink);
    border: var(--border-small) solid var(--brand-ink);
    box-shadow: 4px 4px 0 var(--brand-ink);
    font-size: max(20px, 0.64em);
    font-weight: 600;
    line-height: 1.28;
}

.slide-card-pink strong {
    background: var(--brand-lilac);
}

.slide-card-yellow strong {
    background: var(--brand-green);
}

.slide-card p {
    margin: 0.55em 0 0;
    font-size: max(20px, 0.72em);
    font-weight: 600;
    line-height: 1.42;
}

.slide-card .muted-note {
    margin-top: 1em;
    font-size: max(16px, 0.54em);
    opacity: 0.78;
}

.slide-figure {
    margin: 0;
}

.reveal .slide-figure img {
    display: block;
    max-height: 46vh;
    margin: 0 auto;
}

.image-pair-slide {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.reveal .image-pair-slide .slide-figure img {
    width: 100%;
    max-height: 56vh;
}

.link-qr-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
    max-width: 920px;
    margin: 0 auto;
    align-items: start;
}

.link-qr-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 7px;
    min-width: 0;
    padding: 10px;
    background: transparent;
    border: none;
    box-shadow: none;
    font-size: max(16px, 0.48em);
    font-weight: 800;
    line-height: 1.15;
}

.reveal .link-qr-card img {
    display: block;
    width: min(100%, 190px);
    max-height: 190px;
    object-fit: contain;
    background: white;
}

.link-qr-card strong,
.link-qr-card span {
    display: block;
    max-width: 100%;
    overflow-wrap: anywhere;
}

.link-qr-card span {
    font-size: 0.72em;
    opacity: 0.78;
}

.slide-figure figcaption {
    margin-top: 10px;
    font-size: max(11px, 0.34em);
    line-height: 1.2;
    opacity: 0.62;
    word-break: break-all;
}

.screenshot-strip {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
    align-items: center;
    max-width: 980px;
    margin: 0 auto;
}

.reveal .screenshot-strip img {
    width: 100%;
    max-height: 58vh;
    object-fit: contain;
    background: var(--brand-paper);
}

.tall-image-slide {
    max-width: 820px;
    margin: 0 auto 12px;
}

.reveal .tall-image-slide img {
    display: block;
    max-height: 47vh;
    margin: 0 auto;
}

.tall-image-slide figcaption {
    margin-top: 8px;
    font-size: max(17px, 0.48em);
    font-weight: 800;
    line-height: 1.25;
    opacity: 0.84;
}

.compact-punchline {
    max-width: 780px;
    margin: 14px auto 0;
    padding: 12px 18px;
    background: var(--brand-yellow);
    border: var(--border-small) solid var(--brand-ink);
    box-shadow: var(--shadow-sm);
    font-size: max(20px, 0.62em);
    font-weight: 900;
    line-height: 1.24;
}

.reveal pre {
    width: 100%;
    margin: 0;
    overflow-x: auto;
    text-align: left;
    font-size: max(0.56em, 16px);
    line-height: 1.35;
    background: var(--code-bg);
    border: var(--border-normal) solid var(--brand-ink);
    box-shadow: 8px 8px 0 var(--code-shadow);
}

.reveal pre code {
    display: block;
    max-height: none;
    padding: 22px 24px;
    text-align: left;
    border: 0;
    border-radius: 0;
    box-shadow: none;
}

/* =========================================================
   6. Lists
   ========================================================= */
.reveal ul,
.reveal ol {
    display: block;
    width: fit-content;
    max-width: 82%;
    margin: 0.35em auto;
    text-align: left;
}

.reveal li {
    margin: 0.42em 0;
    padding-left: 0.2em;
}

.reveal ul {
    list-style: none;
    padding-left: 0;
}

.reveal ul li {
    position: relative;
    padding-left: 1.7em;
}

.reveal ul li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.42em;
    width: 0.62em;
    height: 0.62em;
    background: var(--brand-pink);
    border: var(--border-small) solid var(--brand-ink);
    box-shadow: var(--shadow-xs);
    transform: rotate(-8deg);
}

/* =========================================================
   7. Persistent footer
   ========================================================= */
.brand-footer {
    position: absolute;
    bottom: 18px;
    left: 22px;
    z-index: 1000;
    display: flex;
    gap: 10px;
    align-items: center;
    color: rgba(31, 35, 40, 0.55);
    font-size: max(16px, 0.46em);
    font-weight: 800;
}

.reveal .slide-number {
    right: 120px;
    bottom: 18px;
    min-width: 58px;
    padding: 4px 11px 5px;
    color: var(--brand-ink);
    background: var(--brand-yellow);
    border: var(--border-small) solid var(--brand-ink);
    border-radius: 999px;
    box-shadow: var(--shadow-xs);
    font-family: var(--r-main-font);
    font-size: max(16px, 0.44em);
    font-weight: 900;
    line-height: 2;
    text-align: center;
}

.reveal .slide-number a {
    color: inherit;
    text-decoration: none;
}

/* =========================================================
   8. Mobile fallback - plain and stable, design second
   ========================================================= */
@media (max-width: 900px) {
    :root {
        --r-main-font-size: 16px;
    }

    .reveal {
        background: var(--r-background-color);
    }

    .reveal .slides section {
        width: 100%;
        padding: 14px;
    }

    .reveal h2 {
        font-size: clamp(30px, 8vw, 48px);
        box-shadow: none;
    }

    .two-column-slide,
    .screenshot-strip,
    .link-qr-grid,
    .tudoumei-profile-grid,
    .pet-profile-grid {
        grid-template-columns: 1fr;
        gap: 14px;
    }

    .tudoumei-profile h2,
    .pet-profile h2 {
        margin-bottom: 14px;
    }

    .profile-avatar,
    .pet-avatar {
        width: 116px;
        height: 116px;
        box-shadow: none;
        transform: none;
    }

    .profile-card,
    .self-intro-card,
    .pet-card,
    .pet-intro-card {
        box-shadow: none;
        transform: none;
        font-size: 16px;
        padding: 12px;
    }

    .profile-label {
        box-shadow: none;
    }

    .slide-card,
    .highlight-box,
    .compact-punchline,
    .reveal pre {
        max-width: 100%;
        box-shadow: none;
        transform: none;
    }

    .reveal pre code {
        padding: 14px;
    }

    .reveal ul,
    .reveal ol {
        width: auto;
        max-width: 100%;
    }

    .reveal ul li::before {
        box-shadow: none;
    }

    .hero-slide {
        position: static;
        display: block;
        min-height: auto;
        padding: 0 0 72px;
        text-align: left;
    }

    .hero-slide::before,
    .hero-slide::after {
        display: none;
    }

    .hero-card,
    .hero-sticker,
    .hero-badge,
    .eyebrow,
    .mini-label,
    .hero-card-side a,
    .brand-footer a {
        max-width: 100%;
        box-shadow: none;
        transform: none;
    }

    .hero-card,
    .hero-sticker,
    .hero-badge,
    .eyebrow,
    .mini-label {
        border-width: 3px;
    }

    .hero-sticker,
    .hero-badge,
    .hero-card-side {
        position: static;
        display: block;
        width: auto;
        margin: 10px 0 0;
    }

    .hero-card-main {
        width: auto;
        padding: 14px;
    }

    .hero-card-main h1 {
        margin: 0;
        font-size: clamp(28px, 9vw, 42px);
        line-height: 1.1;
        letter-spacing: -0.025em;
    }

    .eyebrow,
    .hero-sticker,
    .hero-badge {
        width: fit-content;
        padding: 6px 10px;
        font-size: 16px;
    }

    .hero-card-side {
        min-width: 0;
        padding: 12px;
        font-size: 16px;
    }

    .hero-card-side a {
        display: inline-flex;
        margin: 4px 6px 0 0;
        overflow-wrap: anywhere;
        border-width: 2px;
        padding: 2px 8px 3px;
    }

    .brand-footer {
        right: 10px;
        bottom: 10px;
        left: 10px;
        justify-content: center;
        flex-wrap: wrap;
        gap: 6px;
        font-size: 16px;
        line-height: 1.2;
    }

    .brand-footer a {
        border-width: 2px;
        padding: 2px 7px 3px;
    }

    .reveal .slide-number {
        right: 10px;
        bottom: 58px;
        min-width: 0;
        padding: 3px 8px 4px;
        border-width: 2px;
        box-shadow: none;
        font-size: 16px;
    }

    .hero-card-side a:hover,
    .brand-footer a:hover {
        box-shadow: none;
        transform: none;
    }
}

strong {
    font-weight: 600;
}