:root {
    --stone-050: #fafaf9;
    --stone-100: #f5f5f4;
    --stone-200: #e7e5e4;
    --stone-300: #d6d3d1;
    --stone-400: #a8a29e;
    --stone-500: #78716c;
    --stone-600: #57534e;
    --stone-700: #44403c;
    --stone-800: #292524;
    --stone-900: #1c1917;
    --stone-950: #0c0a09;
    
    --blue: #3b82f6;
    --red: #ef4444;
    --green: #22c55e;
    --amber: #f59e0b;
    
    --bg: var(--stone-950);
    --bg-raised: var(--stone-900);
    --bg-surface: var(--stone-800);
    --border: var(--stone-800);
    --border-strong: var(--stone-500);
    --text: var(--stone-200);
    --text-muted: var(--stone-400);
    --text-faint: var(--stone-500);
    --text-bright: var(--stone-100);
    --accent: var(--blue);
    --accent-hover: #5193f8;
    --accent-bg: rgba(59, 130, 246, 0.1);
    
    --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    --font-mono: "Roboto Mono", "JetBrains Mono", "SF Mono", "Fira Code", monospace;
    --line-height: 1.6;
    --line-height-tight: 1.2;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    border-radius: 0 !important;
}

body {
    background-color: var(--bg);
    color: var(--text);
    font-family: var(--font-sans);
    line-height: var(--line-height);
    margin: 0;
    width: 100vw;
    height: 100vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

main {
    width: 100%;
    flex: 1 1 auto;
    min-height: 0;
}

#view-lookup {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

#view-search {
    overflow-y: auto;
    display: block;
    height: 100vh;
}

.container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    position: relative;
    flex-grow: 1;
    width: 100%;
}

#char-display {
    font-family: var(--font-mono);
    font-size: clamp(6rem, 30vmin, 40vmin);
    line-height: normal; /* Many unicode characters have huge ascenders/descenders that get cut off with line-height: 1 */
    color: var(--accent);
    user-select: all;
    word-break: break-all;
    font-weight: 300;
    letter-spacing: -0.05em;
    position: relative;
    z-index: 10;
    min-height: clamp(8rem, 35vmin, 45vmin);
    display: flex;
    align-items: center;
    justify-content: center;
    text-shadow: 0 0 30px var(--accent-bg);
}

.info-wrapper {
    position: relative;
    z-index: 20;
    margin-top: 1rem; /* push away from char so no overlap */
    border-radius: 0;
    min-height: 120px;
}

#info-container {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    opacity: 1;
    transition: opacity 0.2s ease, transform 0.2s ease;
    transform: translateY(0);
    background: var(--bg-surface);
    padding: 1.5rem 3rem;
    border: 1px solid var(--border-strong);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.8), 0 0 20px var(--bg);
}

#info-container.hidden {
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    position: absolute;
    pointer-events: none;
}

#instruct-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    opacity: 1;
    transition: opacity 0.2s ease;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    pointer-events: none;
}

.hero-logo {
    font-family: var(--font-mono);
    font-size: 6rem;
    color: var(--accent);
    font-weight: 500;
    margin-bottom: 0.5rem;
    letter-spacing: 0.5rem;
    text-shadow: 0 0 20px var(--accent-bg);
}

#instruct-container.hidden {
    opacity: 0;
    visibility: hidden;
}

#instruct-container p {
    color: var(--text-muted);
    font-family: var(--font-mono);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-size: 0.9rem;
}

.cursor-blink {
    width: 2px;
    height: 1.5rem;
    background-color: var(--text-muted);
    animation: blink 1s step-end infinite;
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0; }
}

.sub-instruct {
    font-size: 0.75rem !important;
    opacity: 0.6;
    margin-top: 1rem;
}

#char-name {
    font-size: 2.5rem;
    font-weight: 300;
    letter-spacing: -0.02em;
    color: var(--text-bright);
    font-family: var(--font-mono);
    text-transform: uppercase;
}

.meaning-text {
    font-family: var(--font-sans);
    color: var(--text-muted);
    font-size: 1.1rem;
    max-width: 600px;
    margin: -0.5rem auto 0;
    line-height: 1.4;
    min-height: 1.5rem;
}

.code-details {
    display: flex;
    justify-content: center;
    gap: 1rem;
    font-family: var(--font-mono);
    font-size: 1.25rem;
    color: var(--accent);
}

.code-details span {
    background-color: var(--bg-surface);
    padding: 0.75rem 1.5rem;
    border: 1px solid var(--border-strong);
    display: flex;
    align-items: center;
    justify-content: center;
}

/* --- Added Header and Lookup/Search Mode Switch --- */

.app-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: 2rem;
    display: flex;
    justify-content: center;
    z-index: 100;
    pointer-events: none;
}

.mode-switch {
    display: flex;
    background: var(--bg-surface);
    border: 1px solid var(--border-strong);
    pointer-events: auto;
}

.mode-switch button {
    background: transparent;
    color: var(--text-muted);
    border: none;
    padding: 0.75rem 2rem;
    font-family: var(--font-mono);
    text-transform: uppercase;
    cursor: pointer;
    font-size: 0.9rem;
    letter-spacing: 0.05em;
    transition: all 0.2s;
    outline: none;
}

.mode-switch button:hover {
    color: var(--text-bright);
}

.mode-switch button.active {
    background: var(--accent);
    color: var(--bg);
    font-weight: bold;
}

.hidden-view {
    display: none !important;
}

/* --- History and Search Results Cards --- */

#history-section {
    width: 100%;
    max-width: 1000px;
    margin: 2rem auto;
    text-align: left;
    padding: 0 2rem;
}

#history-section.hidden {
    display: none;
}

#history-section h3 {
    font-family: var(--font-mono);
    color: var(--text-muted);
    text-transform: uppercase;
    font-size: 0.9rem;
    letter-spacing: 0.1em;
    margin-bottom: 1.5rem;
    border-bottom: 1px solid var(--border-strong);
    padding-bottom: 0.5rem;
}

.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
    width: 100%;
}

.history-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 1rem;
    width: 100%;
}

.history-grid .char-card {
    aspect-ratio: 1 / 1;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 1rem;
    gap: 0.5rem;
}

.history-grid .card-char {
    font-size: 2.5rem;
    min-height: 2.5rem;
    margin-bottom: 0.5rem;
}

.history-grid .card-name {
    font-size: 0.75rem;
    display: -webkit-box;
    line-clamp: 2;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.history-grid .card-hex {
    font-size: 0.7rem;
    margin-top: auto;
}

.history-grid .copy-btn {
    top: 0.5rem;
    right: 0.5rem;
    padding: 0.2rem 0.4rem;
    font-size: 0.6rem;
}

.char-card {
    background: var(--bg);
    border: 1px solid var(--border-strong);
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    position: relative;
    cursor: pointer;
    transition: border-color 0.2s, background-color 0.2s;
    text-align: left;
}

.char-card:hover {
    border-color: var(--accent);
    background: var(--bg-surface);
}

.char-card .card-char {
    font-family: var(--font-mono);
    font-size: 3.5rem;
    color: var(--accent);
    line-height: 1;
    min-height: 3.5rem;
    word-break: break-all;
}

.char-card .card-name {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--text-bright);
    text-transform: uppercase;
    line-height: 1.3;
}

.char-card .card-hex {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--text-faint);
}

.copy-btn {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: var(--bg);
    border: 1px solid var(--border-strong);
    color: var(--text-muted);
    font-family: var(--font-mono);
    font-size: 0.7rem;
    padding: 0.25rem 0.5rem;
    cursor: pointer;
    opacity: 0;
    transition: opacity 0.2s, background-color 0.2s, color 0.2s;
    text-transform: uppercase;
}

.char-card:hover .copy-btn {
    opacity: 1;
}

.copy-btn:hover {
    background: var(--accent);
    color: var(--bg);
    border-color: var(--accent);
}

/* --- Search Input View --- */

.search-container {
    width: 100%;
    max-width: 1000px;
    margin: 8rem auto 2rem;
    padding: 0 2rem;
}

#search-input {
    width: 100%;
    background: var(--bg);
    border: 1px solid var(--border-strong);
    color: var(--text-bright);
    font-family: var(--font-mono);
    font-size: 1.5rem;
    padding: 1.5rem;
    outline: none;
    transition: border-color 0.2s;
    margin-bottom: 2rem;
}

#search-input:focus {
    border-color: var(--accent);
}

.site-footer {
    padding: 20px 0;
    margin-top: auto;
    flex: 0 0 auto;
}

.footer-inner {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
}

.footer-sep {
    color: var(--text-faint);
    user-select: none;
}

.footer-inner a {
    font-size: 0.9rem;
    color: var(--text-muted);
}

.footer-inner .icon-link {
    color: var(--text-muted);
}

.footer-inner .icon-link:hover {
    color: var(--text-bright);
}