:root {
    --bg-color: #0f172a;
    --card-bg: #1e293b;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --accent-color: #8b5cf6;
    --accent-hover: #7c3aed;
    --border-color: #334155;
    --glass-bg: rgba(30, 41, 59, 0.7);
    --glass-border: rgba(255, 255, 255, 0.1);
}

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

body {
    font-family: 'Outfit', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    padding: 2rem;
}

.app-container {
    width: 100%;
    max-width: 1200px;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: 24px;
    padding: 2rem;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
}

header {
    text-align: center;
    margin-bottom: 2rem;
}

header h1 {
    font-size: 2.5rem;
    font-weight: 600;
    background: linear-gradient(to right, #c084fc, #6366f1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 0.5rem;
}

header p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.search-container {
    max-width: 500px;
    margin: 0 auto;
    position: relative;
}

#searchInput {
    width: 100%;
    padding: 1rem 1.5rem;
    border-radius: 16px;
    border: 1px solid var(--border-color);
    background: var(--card-bg);
    color: var(--text-primary);
    font-size: 1rem;
    font-family: inherit;
    transition: all 0.3s ease;
    outline: none;
}

#searchInput:focus {
    border-color: var(--accent-color);
    box-shadow: 0 0 0 4px rgba(139, 92, 246, 0.1);
    background: #253045;
}

#searchInput::placeholder {
    color: var(--text-secondary);
}

.category-nav {
    display: flex;
    gap: 1rem;
    overflow-x: auto;
    padding-bottom: 1rem;
    margin-bottom: 2rem;
    scrollbar-width: thin;
    scrollbar-color: var(--accent-color) transparent;
}

.category-nav::-webkit-scrollbar {
    height: 6px;
}

.category-nav::-webkit-scrollbar-thumb {
    background-color: var(--accent-color);
    border-radius: 3px;
}

.category-btn {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 0.75rem 1.5rem;
    border-radius: 12px;
    cursor: pointer;
    white-space: nowrap;
    transition: all 0.3s ease;
    font-family: inherit;
    font-weight: 500;
}

.category-btn:hover,
.category-btn.active {
    background: var(--accent-color);
    color: white;
    border-color: var(--accent-color);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(139, 92, 246, 0.3);
}

.emoji-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(90px, 1fr));
    gap: 1rem;
}

.emoji-item {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 0.5rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    height: auto;
    min-height: 90px;
}

.emoji-char {
    font-size: 2.5rem;
    line-height: 1.2;
    margin-bottom: 0.25rem;
}

.emoji-name {
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-align: center;
    width: 100%;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.emoji-item:hover {
    transform: translateY(-4px);
    background: var(--card-bg);
    border-color: var(--accent-color);
    box-shadow: 0 10px 20px -5px rgba(139, 92, 246, 0.3);
    z-index: 1;
}

.emoji-item:hover .emoji-name {
    color: var(--text-primary);
}

.emoji-item:active {
    transform: scale(0.95);
}

.toast {
    position: fixed;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: var(--accent-color);
    color: white;
    padding: 0.75rem 2rem;
    border-radius: 50px;
    font-weight: 500;
    box-shadow: 0 10px 25px -5px rgba(139, 92, 246, 0.5);
    opacity: 0;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 100;
}

.toast.show {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
}

@media (max-width: 768px) {
    body {
        padding: 1rem;
    }

    .app-container {
        padding: 1rem;
    }

    header h1 {
        font-size: 2rem;
    }

    .emoji-grid {
        grid-template-columns: repeat(auto-fill, minmax(45px, 1fr));
        gap: 0.5rem;
    }

    .emoji-item {
        font-size: 1.5rem;
    }
}