@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:ital,wght@0,300;0,400;1,300&family=DM+Mono:wght@300;400&display=swap');

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

:root {
    --ink: #1a1a18;
    --surface: #f7f6f3;
    --line: #d8d6cf;
}

body {
    background-color: var(--surface);
    color: var(--ink);
    font-family: 'DM Mono', monospace;
    height: 100dvh;
    display: flex;
    flex-direction: column;
    padding: 0 clamp(1.5rem, 5vw, 6rem);
    max-width: 1300px;
    margin: 0 auto;
    overflow: hidden;
}

/* ── Header ── */
.site-header {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    border-bottom: 1px solid var(--line);
    padding: 2rem 0 1.2rem;
    flex-shrink: 0;
}

h1 {
    font-family: 'Cormorant Garamond', serif;
    font-weight: 300;
    font-size: clamp(2rem, 5vw, 3.4rem);
    letter-spacing: -0.01em;
    line-height: 1;
    color: var(--ink);
}

.site-header .links {
    font-size: 1rem;
    letter-spacing: 0.18em;
    color: var(--ink);
    display: inline-flex;
    align-items: baseline;
    gap: 0;

    span {
        cursor: pointer;
    }

    span:hover, a:hover {
        text-decoration: underline;
    }

    a {
        color: var(--ink);
        text-decoration: none;
    }
}

/* ── Content area ── */
.content {
    flex: 1;
    min-height: 0;
}

.content iframe {
    width: 100%;
    height: 100%;
    border: none;
    display: block;
}

/* ── Main layout ── */
.container {
    position: relative;
    width: 60%;
    left: 20%;
}

.images {
    width: 32vw;
    height: 32vh;
    left: 53%;
    transform: translate(calc(-50% - 20px), 0);
    position: relative;
    display: flex;
    justify-content: center;
    vertical-align: middle;
    overflow: hidden;
}

@media only screen and (max-width: 900px) {
    .images {
        width: 70vw;
        left: 58%;
    }
}

.mouth-image {
    z-index: 0;
    scale: 3;
}

@media only screen and (max-width: 600px) {
    .mouth-image {
        scale: 2.4;
    }
}

.highlighted {
    z-index: 1;
}

.hidden {
    display: none;
}

/* ── Form ── */
.text-form {
    padding: 10px;
}

.text-form label {
    font-size: 0.6rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--ink);
    margin-bottom: 0.75rem;
}

.input-row {
    display: flex;
    align-items: stretch;
    border: 1px solid var(--ink);
}

.input-row input {
    flex: 1;
    background: transparent;
    border: none;
    outline: none;
    padding: 0.85rem 1rem;
    font-family: 'DM Mono', monospace;
    font-size: 0.8rem;
    color: var(--ink);
    letter-spacing: 0.04em;
}

.input-row input::placeholder {
    color: var(--ink);
    font-style: italic;
}

.input-row button {
    background: transparent;
    border: none;
    border-left: 1px solid var(--ink);
    padding: 0.85rem 1.4rem;
    font-family: 'DM Mono', monospace;
    font-size: 0.65rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--ink);
    cursor: pointer;
    position: relative;
    overflow: hidden;
    transition: color 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

.input-row button::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--ink);
    transform: translateY(100%);
    transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

.input-row button:hover::before {
    transform: translateY(0);
}

.input-row button:hover {
    color: var(--surface);
}

.input-row button:active {
    transform: scale(0.98);
}

.input-row button span {
    position: relative;
    z-index: 1;
}

/* ── Output ── */
.output {
    padding: 10px;
    line-height: 1.5em;
    display: flex;
    vertical-align: middle;
    justify-content: center;
    min-height: 3rem;
    border-radius: 5px;
    text-align: center;
    font-family: 'DM Mono', monospace;
    overflow-x: auto;
    overflow-y: hidden;
    flex-wrap: nowrap;
    justify-content: center-start;
    margin-bottom: 1.5rem;
}

.output .inline-syllable {
    display: inline-block;
    outline: none;
}

.output .embold {
    font-size: 1.6rem;
    font-weight: 500;
}

/* ── Board ── */
.board {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid var(--line);
    padding-bottom: 6rem;
}

.board h2 {
    font-size: 0.9rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--ink);
    margin-bottom: 2rem;
    font-family: 'DM Mono', monospace;
    font-weight: 400;
}

.board-list {
    display: flex;
    flex-direction: column;
}

.board-item {
    font-family: 'Cormorant Garamond', serif;
    font-size: clamp(1rem, 2vw, 1.3rem);
    font-weight: 300;
    font-style: italic;
    color: var(--ink);
    padding: 1rem 0;
    border-bottom: 1px solid var(--line);
    transition: color 0.2s ease;
}

.board-item:hover {
    text-decoration: underline;
}

.board-num {
    font-family: 'DM Mono', monospace;
    font-size: 0.65rem;
    color: var(--ink);
    margin-right: 0.6rem;
    letter-spacing: 0.05em;
    text-decoration: none;
    display: inline-block;
}

/* ── About ── */
.about-mask {
    z-index: 10;
    width: 100%;
    height: 100%;
    position: fixed;
    top: 0;
    left: 0;
    background-color: rgba(15, 15, 15, 0.5);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    opacity: 0;
    pointer-events: none;
    transition: opacity 250ms ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.about {
    padding: 2rem;
    border-radius: 5px;
    background: var(--surface);
    max-width: 640px;
    width: 90%;
    position: relative;
    font-size: small;
    z-index: 11;
    max-height: 50%;
    overflow: scroll;

    p {
        margin: 0.5rem 0;
    }
}

.about h2 {
    margin-bottom: 0.5rem;
}

.about-mask.open {
    opacity: 1;
    pointer-events: auto;
}

.about-close {
    position: absolute;
    top: 0.75rem;
    right: 1.1rem;
    background: none;
    border: none;
    font-size: 1.6rem;
    color: var(--ink);
    cursor: pointer;
    opacity: 0.6;
}

.about-close:hover {
    opacity: 1;
}

/* ── Hamburger ── */
.hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
    order: -1;
}

.hamburger span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--ink);
    transition: opacity 0.2s;
}

/* ── Sidebar ── */
.nav-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(15, 15, 15, 0.4);
    backdrop-filter: blur(3px);
    -webkit-backdrop-filter: blur(3px);
    z-index: 20;
    opacity: 0;
    transition: opacity 250ms ease;
}

.nav-overlay.open {
    opacity: 1;
}

.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    height: 100%;
    width: 240px;
    background: var(--surface);
    border-right: 1px solid var(--line);
    z-index: 21;
    display: flex;
    flex-direction: column;
    padding: 2rem 1.5rem;
    gap: 1.6rem;
    transform: translateX(-100%);
    transition: transform 300ms cubic-bezier(0.16, 1, 0.3, 1);
}

.sidebar.open {
    transform: translateX(0);
}

.sidebar span, .sidebar a {
    font-family: 'DM Mono', monospace;
    font-size: 0.9rem;
    letter-spacing: 0.18em;
    color: var(--ink);
    text-decoration: none;
    cursor: pointer;
}

.sidebar span:hover, .sidebar a:hover {
    text-decoration: underline;
}

.sidebar-close {
    position: absolute;
    top: 0.75rem;
    left: 1.1rem;
    background: none;
    border: none;
    font-size: 1.6rem;
    color: var(--ink);
    cursor: pointer;
    opacity: 0.6;
}

.sidebar-close:hover {
    opacity: 1;
}

/* ── Responsive ── */
@media only screen and (max-width: 760px) {
    .site-header .links {
        display: none;
    }

    .hamburger {
        display: flex;
    }

    .site-header h1 {
        flex: 1;
        text-align: center;
    }

    .nav-overlay {
        display: block;
        pointer-events: none;
    }

    .nav-overlay.open {
        pointer-events: auto;
    }
}

@media only screen and (max-width: 600px) {
    .container {
        width: 90%;
        left: 5%;
        display: block;
    }
    form input {
        margin: 5px;
        width: 90%;
    }
}