/* Speedcubing Cheat Sheet Styles */

:root {
    --paper: #f9fbff;
    --line: rgba(99, 150, 230, 0.24);
    --line-bold: rgba(74, 115, 190, 0.33);
    --margin-line: rgba(220, 60, 60, 0.45);
    --ink: #172033;
    --accent: #21409a;
    --accent-soft: #dbe4ff;
    --card: rgba(255, 255, 255, 0.75);
    --border: rgba(23, 32, 51, 0.16);
    --shadow: 0 12px 28px rgba(18, 25, 39, 0.12);
    --radius: 14px;
    --space-1: clamp(0.35rem, 0.3rem + 0.12vw, 0.5rem);
    --space-2: clamp(0.5rem, 0.46rem + 0.18vw, 0.75rem);
    --space-3: clamp(0.75rem, 0.68rem + 0.26vw, 1rem);
    --space-4: clamp(1rem, 0.9rem + 0.35vw, 1.35rem);
    --space-5: clamp(1.35rem, 1.2rem + 0.45vw, 1.8rem);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    color: var(--ink);
    font-family: "Avenir Next Condensed", "Trebuchet MS", "Segoe UI", sans-serif;
    min-height: 100vh;
    background:
        linear-gradient(90deg,
            transparent 0,
            transparent 7.2rem,
            var(--margin-line) 7.2rem,
            var(--margin-line) 7.3rem,
            transparent 7.3rem),
        linear-gradient(var(--line) 1px, transparent 1px),
        linear-gradient(90deg, var(--line) 1px, transparent 1px),
        linear-gradient(var(--line-bold) 1px, transparent 1px),
        linear-gradient(90deg, var(--line-bold) 1px, transparent 1px),
        var(--paper);
    background-size: 100% 100%, 1.5rem 1.5rem, 1.5rem 1.5rem, 7.5rem 7.5rem, 7.5rem 7.5rem, auto;
    padding: 1.6rem;
}

.page {
    max-width: 1120px;
    margin: 0 auto;
    display: grid;
    gap: var(--space-4);
}

.hero {
    background: var(--card);
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    border-radius: var(--radius);
    padding: var(--space-4);
    backdrop-filter: blur(5px);
    animation: rise 0.55s ease-out;
}

.hero h1 {
    margin: 0;
    font-size: clamp(1.45rem, 2.8vw, 2.2rem);
    letter-spacing: 0.03em;
}

.hero p {
    margin: var(--space-1) 0 0;
    max-width: 76ch;
    font-size: 1rem;
    line-height: 1.45;
}

.hero-nav {
    margin-top: var(--space-3);
}

.hero-scrambles {
    margin-top: var(--space-3);
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--space-2);
}

.scramble-card {
    display: grid;
    gap: var(--space-1);
    padding: var(--space-2) 0;
    border-top: 1px solid rgba(76, 103, 170, 0.26);
    border-radius: 0;
    background: transparent;
    box-shadow: none;
}

.scramble-card.active {
    border-top-color: #22376d;
}

.scramble-card-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 0.6rem;
}

.scramble-label {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    min-width: 0;
    font-size: 0.82rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: #2c4788;
}

.scramble-cube-icon {
    width: 1.3rem;
    height: 1.3rem;
    flex: 0 0 auto;
}

.scramble-refresh {
    width: 2.75rem;
    height: 2.75rem;
    padding: 0;
    border-radius: 999px;
    background: #eef3ff;
    color: #223a7d;
    border-color: #9eb2e4;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex: 0 0 auto;
}

.scramble-action-icon {
    width: 1.05rem;
    height: 1.05rem;
}

.scramble-meta {
    font-size: 0.78rem;
    color: #4f5f84;
    letter-spacing: 0.03em;
}

.scramble-sequence {
    min-height: 2.6rem;
    align-items: flex-start;
}

.cube-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 0.45rem;
}

.cube-tab {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    border: 1px solid #8ea4d9;
    background: #eef3ff;
    color: #1f3d88;
    border-radius: 999px;
    padding: 0.38rem 0.72rem;
    font-size: 0.88rem;
    font-weight: 700;
    letter-spacing: 0.03em;
    cursor: pointer;
    text-decoration: none;
    transition: transform 0.16s ease, background-color 0.16s ease, color 0.16s ease, box-shadow 0.16s ease, border-color 0.16s ease;
}

.cube-tab:hover {
    transform: translateY(-1px);
    border-color: #6f88c9;
    box-shadow: 0 8px 16px rgba(33, 64, 154, 0.14);
}

.cube-tab.active {
    border-color: #22376d;
    background: linear-gradient(180deg, #2a4ea6, #1f3d88);
    color: #fff;
}

.cube-tab:focus-visible {
    outline: 3px solid rgba(33, 64, 154, 0.28);
    outline-offset: 2px;
}

.layout {
    display: grid;
    gap: var(--space-4);
    grid-template-columns: 1fr;
    align-items: start;
}

.panel {
    background: var(--card);
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    border-radius: var(--radius);
    padding: var(--space-4);
    animation: rise 0.65s ease-out;
}

.panel h2 {
    margin: 0 0 0.5rem;
    font-size: 1.1rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--accent);
}

.panel p {
    margin: 0.3rem 0 0.8rem;
    line-height: 1.35;
    font-size: 0.95rem;
}

label {
    display: block;
    margin: 0.7rem 0 0.35rem;
    font-size: 0.88rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: #334165;
    font-weight: 700;
}

textarea {
    width: 100%;
    border-radius: 10px;
    border: 1px solid var(--border);
    padding: 0.6rem 0.7rem;
    font: 500 0.95rem/1.45 "Menlo", "Consolas", monospace;
    background: #ffffffea;
    color: #18202f;
    resize: vertical;
}

.btn-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 0.7rem;
}

button {
    border: 1px solid #22376d;
    background: linear-gradient(180deg, #2a4ea6, #1f3d88);
    color: #fff;
    border-radius: 10px;
    padding: 0.5rem 0.8rem;
    cursor: pointer;
    font-size: 0.92rem;
    font-weight: 700;
    letter-spacing: 0.02em;
    transition: transform 0.12s ease, filter 0.12s ease;
}

button.secondary {
    background: #eef3ff;
    color: #223a7d;
    border-color: #9eb2e4;
}

button:hover {
    transform: translateY(-1px);
    filter: brightness(1.03);
}

button:focus-visible {
    outline: 3px solid rgba(33, 64, 154, 0.28);
    outline-offset: 2px;
}

.status {
    min-height: 1.2rem;
    margin-top: 0.4rem;
    font-size: 0.88rem;
    color: #2e436f;
    line-height: 1.4;
}

.status[data-state="error"] {
    color: #a52b2b;
}

.sheet {
    display: grid;
    gap: var(--space-3);
}

.sheet-controls {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.45rem;
    padding: 0 0 0.2rem;
    border-bottom: 1px dashed #9fb3e7;
}

.sheet-visibility-summary {
    font-size: 0.78rem;
    color: #3a4f84;
    margin-right: auto;
}

.sheet-control-btn {
    min-height: 36px;
    padding: 0.28rem 0.62rem;
    border-radius: 999px;
    font-size: 0.78rem;
}

.group-block {
    border: 0;
    border-radius: 0;
    background: transparent;
    padding: 0;
    display: grid;
    gap: var(--space-1);
}

.group-title {
    margin: var(--space-2) 0 var(--space-1);
    padding: 0 0 0.2rem;
    font-size: 0.94rem;
    text-transform: uppercase;
    letter-spacing: 0.11em;
    color: #35549d;
    border-bottom: 1px dashed #9fb3e7;
}

.group-markdown {
    border-bottom: 1px solid rgba(73, 103, 171, 0.2);
    padding: var(--space-1) 0 var(--space-2);
    color: #1e2d4f;
    line-height: 1.45;
}

.group-markdown.is-hidden-known {
    opacity: 0.74;
}

.group-markdown-actions {
    display: flex;
    justify-content: flex-end;
    margin-bottom: 0.2rem;
}

.group-markdown-content {
    min-width: 0;
}

.group-markdown h1,
.group-markdown h2,
.group-markdown h3 {
    margin: 0.35rem 0 0.45rem;
    color: #294a94;
    letter-spacing: 0.03em;
}

.group-markdown h1 {
    font-size: 1rem;
}

.group-markdown h2 {
    font-size: 0.94rem;
}

.group-markdown h3 {
    font-size: 0.88rem;
}

.group-markdown p,
.group-markdown blockquote,
.group-markdown ul,
.group-markdown ol {
    margin: 0.4rem 0;
}

.group-markdown ul,
.group-markdown ol {
    padding-left: 1.2rem;
}

.group-markdown blockquote {
    border-left: 3px solid #9ab0e8;
    padding-left: 0.6rem;
    color: #374f84;
}

.group-markdown code {
    font: 700 0.82rem/1 "SF Mono", "Menlo", monospace;
    background: #edf2ff;
    color: #1f3d88;
    border-radius: 6px;
    padding: 0.08rem 0.26rem;
}

.alg-card {
    border: 0;
    border-bottom: 1px solid rgba(73, 103, 171, 0.2);
    border-radius: 0;
    background: transparent;
    padding: var(--space-2) 0;
    display: grid;
    gap: var(--space-2);
    animation: reveal 0.35s ease both;
}

.alg-card:last-child {
    border-bottom: 0;
}

.alg-head {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: 0.8rem;
    flex: 1;
    min-width: 0;
}

.alg-head-actions {
    display: inline-flex;
    align-items: center;
    margin-left: auto;
}

.case-hide-toggle {
    min-height: 30px;
    padding: 0.18rem 0.56rem;
    border-radius: 999px;
    font-size: 0.74rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.alg-card.is-hidden-known {
    opacity: 0.74;
}

.case-top {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: start;
    gap: var(--space-2);
}

.case-top .alg-head {
    flex: 1;
}

.case-details {
    display: grid;
    gap: var(--space-1);
    min-width: 0;
}

.cube-guide {
    display: grid;
    justify-items: start;
    gap: 0.15rem;
}

.cube-guide-label {
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: #4660a2;
    font-weight: 700;
}

.start-preview {
    width: 176px;
    height: 136px;
    flex: 0 0 auto;
}

.alg-name {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: #4660a2;
    font-weight: 700;
}

.alg-meta {
    font-size: 0.8rem;
    color: #4f5f84;
    white-space: nowrap;
}

.sequence {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-1);
    align-items: center;
}

.sequence-label {
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: #4660a2;
    font-weight: 700;
}

.sequence.is-dense {
    gap: 0.22rem;
}

.move {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.28rem;
    min-width: 2.28em;
    padding: 0.15rem 0.28rem;
    /* border-radius: 8px;
    border: 1px solid rgba(24, 35, 62, 0.15); */
    background: #fff;
    font: 700 1.05rem/1 "SF Mono", "Menlo", monospace;
    color: #172242;
    letter-spacing: 0.02em;
}

.sequence.is-dense .move {
    min-width: 2.06em;
    padding: 0.12rem 0.22rem;
    font-size: 0.98rem;
}

.move-icon {
    width: 1.34rem;
    height: 1.34rem;
    flex: 0 0 auto;
}

.sequence.is-dense .move-icon {
    width: 1.14rem;
    height: 1.14rem;
}

.move-text {
    display: inline-flex;
    align-items: center;
    line-height: 1;
}

.hint {
    font-size: 0.82rem;
    color: #384b79;
    background: #edf2ff;
    border: 1px dashed #adc0eb;
    border-radius: 10px;
    padding: 0.5rem;
    line-height: 1.35;
}

@keyframes rise {
    from {
        opacity: 0;
        transform: translateY(8px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes reveal {
    from {
        opacity: 0;
        transform: translateY(6px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (max-width: 900px) {
    body {
        padding: 0.9rem;
        background:
            linear-gradient(90deg,
                transparent 0,
                transparent 2.8rem,
                var(--margin-line) 2.8rem,
                var(--margin-line) 2.9rem,
                transparent 2.9rem),
            linear-gradient(var(--line) 1px, transparent 1px),
            linear-gradient(90deg, var(--line) 1px, transparent 1px),
            linear-gradient(var(--line-bold) 1px, transparent 1px),
            linear-gradient(90deg, var(--line-bold) 1px, transparent 1px),
            var(--paper);
        background-size: 100% 100%, 1.1rem 1.1rem, 1.1rem 1.1rem, 5.5rem 5.5rem, 5.5rem 5.5rem, auto;
    }

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

    .hero-scrambles {
        grid-template-columns: 1fr;
    }

    .case-top {
        align-items: flex-start;
    }

    .start-preview {
        width: 148px;
        height: 114px;
    }
}

@media (max-width: 680px) {
    .sheet-controls {
        gap: 0.35rem;
    }

    .sheet-visibility-summary {
        width: 100%;
        margin-right: 0;
    }

    .case-top {
        grid-template-columns: 1fr;
    }

    .start-preview {
        width: 132px;
        height: 102px;
    }

    .sequence {
        gap: 0.18rem;
    }

    .move {
        min-width: 1.94em;
        padding: 0.1rem 0.18rem;
        font-size: 0.94rem;
    }
}

@media (prefers-reduced-motion: reduce) {

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}