:root {
    --bg-color: #f8fafc;
    --card-bg: #ffffff;
    --text-color: #0f172a;
    --text-muted: #64748b;
    --primary: #0284c7;
    --primary-hover: #0369a1;
    --accent: #16a34a;
    --border: #e2e8f0;
    --ad-bg: #fef08a;
    --ad-text: #854d0e;
    --value-color: #5500ff;
}

[data-theme="dark"] {
    --bg-color: #0f172a;
    --card-bg: #1e293b;
    --text-color: #f8fafc;
    --text-muted: #94a3b8;
    --primary: #38bdf8;
    --primary-hover: #0ea5e9;
    --accent: #22c55e;
    --border: #334155;
    --ad-bg: #fde047;
    --ad-text: #713f12;
    --value-color: #fff;
}

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

body {
    font-family: "Montserrat", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.5;
    min-height: 100vh;
    padding: 1.5rem;
}

.app-layout {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    min-height: 95vh;
}

.site-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border);
    position: relative;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 2.5rem;
}

.logo {
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--text-color);
    text-decoration: none;
    letter-spacing: -0.05em;
}

.logo span {
    color: var(--primary);
}

.desktop-nav {
    display: flex;
    gap: 1.25rem;
}

.desktop-nav a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    transition: color 0.15s;
    padding: 0.3rem 0.6rem;
    border-radius: 0.4rem;
}

.desktop-nav a:hover, .desktop-nav a.active {
    color: var(--primary);
    background-color: rgba(2, 132, 199, 0.08);
}

.header-right {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.theme-toggle-btn {
    background-color: var(--card-bg);
    border: 1px solid var(--border);
    color: var(--text-color);
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 500;
}

.theme-toggle-btn:hover {
    border-color: var(--primary);
}

.hamburger-btn {
    display: none;
    background-color: var(--card-bg);
    border: 1px solid var(--border);
    color: var(--text-color);
    font-size: 1.25rem;
    padding: 0.4rem 0.7rem;
    border-radius: 0.5rem;
    cursor: pointer;
}

.mobile-menu {
    display: none;
    background-color: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 0.75rem;
    padding: 1rem;
    margin-bottom: 1.5rem;
    flex-direction: column;
    gap: 0.5rem;
}

.mobile-menu a {
    color: var(--text-color);
    text-decoration: none;
    padding: 0.6rem 1rem;
    border-radius: 0.4rem;
    font-weight: 500;
}

.mobile-menu a:hover, .mobile-menu a.active {
    background-color: rgba(2, 132, 199, 0.1);
    color: var(--primary);
}

@media (max-width: 950px) {
    .desktop-nav {
        display: none;
    }
    .hamburger-btn {
        display: block;
    }
}

.main-container {
    display: grid;
    grid-template-columns: 1fr 240px;
    gap: 1.5rem;
    flex: 1;
}

@media (max-width: 1024px) {
    .main-container {
        grid-template-columns: 1fr;
    }
    .sidebar-right {
        display: none;
    }
}

.sidebar-right {
    display: flex;
    flex-direction: column;
}

.adsense-placeholder {
    background-color: var(--ad-bg);
    color: var(--ad-text);
    border: 2px dashed #ca8a04;
    border-radius: 0.75rem;
    width: 100%;
    min-height: 550px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 1rem;
    font-weight: 700;
    font-size: 1.1rem;
}

.adsense-placeholder small {
    font-size: 0.8rem;
    font-weight: 500;
    margin-top: 0.5rem;
    opacity: 0.8;
}

.content-area {
    min-width: 0;
}

.home-hero {
    text-align: center;
    margin-bottom: 2rem;
}

.home-hero h1 {
    font-size: 1.75rem;
    margin-bottom: 0.5rem;
    font-weight: 700;
}

.home-hero p {
    color: var(--text-muted);
    margin-bottom: 1.25rem;
    font-size: 1rem;
}

.search-wrapper {
    position: relative;
    width: 100%;
    max-width: 550px;
    margin: 0 auto;
}

#searchInput {
    width: 100%;
    padding: 0.85rem 2.5rem 0.85rem 1.25rem;
    font-size: 0.95rem;
    background-color: var(--card-bg);
    border: 1px solid var(--border);
    color: var(--text-color);
    border-radius: 0.75rem;
    outline: none;
}

#searchInput:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(2, 132, 199, 0.15);
}

.search-clear-btn {
    position: absolute;
    right: 0.75rem;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    font-size: 1.4rem;
    color: var(--text-muted);
    cursor: pointer;
    padding: 0.2rem 0.5rem;
    line-height: 1;
}

.search-clear-btn:hover {
    color: var(--text-color);
}

.directory-section h2 {
    font-size: 1.15rem;
    margin-bottom: 1rem;
    color: var(--text-muted);
    font-weight: 600;
}

/* Odstraněno fixní max-height a overflow-y, aby grid nepůsobil jako vnitřní okno a load-more bylo blíž */
.symbols-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
    gap: 1rem;
}

.symbol-card {
    background-color: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 0.75rem;
    padding: 1rem;
    text-align: center;
    text-decoration: none;
    color: var(--text-color);
    display: flex;
    flex-direction: column;
    align-items: center;
}

.symbol-card:hover {
    border-color: var(--primary);
}

.card-char {
    font-size: 3.2rem;
    margin-bottom: 0.5rem;
    line-height: 1;
    font-weight: 900;
}

.card-title {
    font-size: 0.75rem;
    color: var(--text-muted);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    width: 100%;
    margin-bottom: 0.4rem;
}

.card-type {
    font-size: 0.6rem;
    background: rgba(2, 132, 199, 0.1);
    color: var(--primary);
    padding: 0.1rem 0.35rem;
    border-radius: 0.2rem;
    font-weight: 600;
    text-transform: uppercase;
}

.load-more-btn {
    background-color: var(--card-bg);
    border: 1px solid var(--border);
    color: var(--text-color);
    padding: 0.7rem 1.5rem;
    font-size: 0.9rem;
    font-weight: 600;
    border-radius: 0.5rem;
    cursor: pointer;
}

.load-more-btn:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.back-link {
    margin-bottom: 1.25rem;
}

.back-link a {
    color: var(--primary);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
}

.back-link a:hover {
    text-decoration: underline;
}

.hero-box-split {
    background-color: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 1rem;
    padding: 2.5rem;
    display: flex;
    align-items: center;
    gap: 3rem;
    margin-bottom: 1.5rem;
}

.glyph-left {
    font-size: 12rem;
    line-height: 1;
    background: rgba(0, 0, 0, 0.02);
    border: 1px solid var(--border);
    padding: 1.5rem 2rem;
    border-radius: 0.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 900;
}

[data-theme="dark"] .glyph-left {
    background: rgba(255, 255, 255, 0.02);
}

.info-right {
    flex: 1;
}

.info-right h1 {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 1.25rem;
}

.action-group {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.copy-btn {
    background-color: var(--primary);
    color: #ffffff;
    border: none;
    padding: 0.8rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 0.5rem;
    cursor: pointer;
}

.copy-btn:hover {
    background-color: var(--primary-hover);
}

.copy-feedback {
    margin-top: 0.5rem;
    font-size: 0.85rem;
    color: var(--accent);
    opacity: 0;
    transition: opacity 0.2s;
    font-weight: 500;
}

.copy-feedback.visible {
    opacity: 1;
}

.specs-box {
    background-color: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 1rem;
    padding: 1.75rem;
}

.specs-box h2 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-muted);
}

.specs-list {
    list-style: none;
}

.specs-list li {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border);
}

.specs-list li:last-child {
    border-bottom: none;
}

.specs-list .label {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.code-action {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.specs-list code, .specs-list span {
    background-color: rgba(0, 0, 0, 0.03);
    padding: 0.25rem 0.5rem;
    border-radius: 0.3rem;
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
    font-size: 0.9rem;
}

[data-theme="dark"] .specs-list code, [data-theme="dark"] .specs-list span {
    background-color: rgba(255, 255, 255, 0.05);
}

.small-copy-btn {
    background-color: var(--border);
    color: var(--text-color);
    border: none;
    padding: 0.25rem 0.5rem;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: 0.3rem;
    cursor: pointer;
}

.small-copy-btn:hover {
    background-color: var(--primary);
    color: #ffffff;
}

.direct-link {
    color: var(--primary);
    text-decoration: none;
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
    font-size: 0.85rem;
}

.direct-link:hover {
    text-decoration: underline;
}

.site-footer {
    text-align: center;
    margin-top: 2.5rem;
    font-size: 0.85rem;
    color: var(--text-muted);
}