/* style.css */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

:root {
    --bg-color: #17212b;
    --primary-text-color: #ffffff;
    --secondary-text-color: #a9c1d6;
    --card-bg-color: #222e3a;
    --border-color: #304050;
    --accent-color: #5288c1;
    --accent-hover-color: #639cd9;
    --success-color: #4caf50;
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
}

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

html {
    -webkit-text-size-adjust: 100%;
    -webkit-tap-highlight-color: transparent;
}

body {
    font-family: var(--font-family);
    background-color: var(--bg-color);
    color: var(--primary-text-color);
    line-height: 1.6;
    overscroll-behavior-y: none;
}

.app-container {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px 15px;
}

.app-header {
    text-align: center;
    margin-bottom: 25px;
}

.app-header h1 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 5px;
    background: linear-gradient(45deg, #a9c1d6, #ffffff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.app-header p {
    color: var(--secondary-text-color);
    font-size: 1rem;
}

.input-area {
    position: relative;
    margin-bottom: 20px;
}

#text-input {
    width: 100%;
    padding: 15px 50px 15px 15px;
    font-family: var(--font-family);
    font-size: 1.1rem;
    background-color: var(--card-bg-color);
    color: var(--primary-text-color);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    resize: vertical;
    transition: border-color 0.3s, box-shadow 0.3s;
    -webkit-appearance: none;
}

#text-input:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(82, 136, 193, 0.3);
}

#clear-btn {
    position: absolute;
    top: 50%;
    right: 15px;
    transform: translateY(-50%);
    background: none;
    border: none;
    cursor: pointer;
    color: var(--secondary-text-color);
    padding: 5px;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0.7;
    transition: opacity 0.2s, color 0.2s;
}

#clear-btn:hover {
    opacity: 1;
    color: var(--primary-text-color);
}

.tabs {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 10px;
}

.tab-link {
    padding: 10px 15px;
    cursor: pointer;
    background-color: transparent;
    border: none;
    color: var(--secondary-text-color);
    font-size: 1rem;
    font-weight: 500;
    border-radius: 8px;
    transition: background-color 0.3s, color 0.3s;
    position: relative;
}

.tab-link.active {
    color: var(--primary-text-color);
    background-color: rgba(255, 255, 255, 0.1);
}

.tab-link:not(.active):hover {
    background-color: rgba(255, 255, 255, 0.05);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

.output-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 15px;
}

.output-card {
    background-color: var(--card-bg-color);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 15px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    transition: transform 0.2s, box-shadow 0.2s;
}

.output-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.style-name {
    font-size: 0.85rem;
    color: var(--secondary-text-color);
    font-weight: 500;
}

.generated-text {
    font-size: 1.2rem;
    word-wrap: break-word;
    flex-grow: 1;
    min-height: 40px;
    background-color: var(--bg-color);
    padding: 10px;
    border-radius: 8px;
}

.copy-btn {
    background-color: var(--accent-color);
    color: white;
    border: none;
    padding: 10px 15px;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    font-size: 0.9rem;
    transition: background-color 0.2s;
    align-self: flex-end;
}

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

.copy-btn.copied {
    background-color: var(--success-color);
}

.placeholder {
    grid-column: 1 / -1;
    text-align: center;
    padding: 40px 20px;
    color: var(--secondary-text-color);
    background-color: var(--card-bg-color);
    border-radius: 12px;
    border: 2px dashed var(--border-color);
}

.symbols-grid {
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
}

.category-card {
    background-color: var(--card-bg-color);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 15px;
}

.category-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border-color);
}

.items-container {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.copy-item {
    background-color: var(--bg-color);
    padding: 8px 12px;
    border-radius: 8px;
    cursor: pointer;
    transition: background-color 0.2s, transform 0.2s;
    font-size: 1.2rem;
}

.copy-item:hover {
    background-color: var(--accent-color);
    transform: scale(1.1);
}

.app-footer {
    text-align: center;
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
    color: var(--secondary-text-color);
    font-size: 0.9rem;
}

@media (max-width: 600px) {
    .app-container {
        padding: 15px 10px;
    }
    .app-header h1 {
        font-size: 1.8rem;
    }
    .output-grid {
        grid-template-columns: 1fr;
    }
    .tabs {
        gap: 5px;
        justify-content: space-around;
    }
    .tab-link {
        padding: 8px 10px;
        font-size: 0.9rem;
    }
}