@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700&display=swap');

:root {
    --bg-color: #000000;
    --card-bg: #09090b;
    --text-primary: #ededed;
    --text-secondary: #71767b;
    --border-color: #27272a;
    --accent-color: #ffffff;
    --accent-hover: #d4d4d8;
    --input-bg: #000000;
    --focus-ring: rgba(255, 255, 255, 0.15);
}

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

body {
    font-family: 'Outfit', system-ui, -apple-system, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    -webkit-font-smoothing: antialiased;
    letter-spacing: -0.01em;
}

/* Header */
header {
    background-color: transparent;
    padding: 3rem 2rem 1rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1.25rem;
    border-bottom: none;
    z-index: 10;
}

.logo {
    width: 80px;
    height: 80px;
    filter: drop-shadow(0 0 25px rgba(255, 255, 255, 0.4));
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.logo:hover {
    transform: scale(1.05) rotate(-5deg);
    filter: drop-shadow(0 0 35px rgba(255, 255, 255, 0.6));
}

header h1 {
    font-size: 2.25rem;
    font-weight: 700;
    color: var(--text-primary);
    text-shadow: 0 0 15px rgba(255, 255, 255, 0.2);
    letter-spacing: -0.05em;
}

.header-text {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.35rem;
    text-align: center;
}

.tagline {
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.25em;
    font-weight: 500;
}

/* Main Container */
.container {
    flex: 1;
    max-width: 900px;
    width: 100%;
    margin: 0 auto;
    padding: 2.5rem 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

/* Language Selector */
.language-selector {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background-color: var(--bg-color);
    padding: 0.5rem;
    border-radius: 9999px;
    border: 1px solid var(--border-color);
    width: fit-content;
    margin: 0 auto;
    position: relative;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
}

.lang-group {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0 0.5rem;
}

.lang-group label {
    display: none;
}

select {
    appearance: none;
    background-color: transparent;
    color: var(--text-primary);
    border: none;
    padding: 0.5rem 2rem 0.5rem 1rem;
    border-radius: 9999px;
    font-size: 0.95rem;
    font-family: inherit;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%23a1a1aa'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'%3E%3C/path%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    background-size: 1.25rem;
}

select:focus {
    outline: none;
    background-color: rgba(255, 255, 255, 0.05);
}

select option {
    background-color: var(--card-bg);
    color: var(--text-primary);
}

.swap-btn {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    width: 36px;
    height: 36px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
}

.swap-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--text-primary);
    transform: rotate(180deg);
}

/* Translation Area */
.translation-area {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1px;
    background-color: var(--border-color);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
}

@media (max-width: 768px) {
    .translation-area {
        grid-template-columns: 1fr;
    }

    .swap-btn {
        transform: rotate(90deg);
    }

    .swap-btn:hover {
        transform: rotate(270deg);
    }
}

.text-card {
    background-color: var(--input-bg);
    display: flex;
    flex-direction: column;
    min-height: 250px;
    transition: background-color 0.2s ease;
}

.text-card:focus-within {
    background-color: #050505;
}

.card-header {
    padding: 1rem 1.5rem 0.5rem;
}

.card-header h3 {
    color: var(--text-secondary);
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.text-content {
    padding: 0 1.5rem 1.5rem;
    flex: 1;
    display: flex;
    flex-direction: column;
}

textarea {
    width: 100%;
    height: 100%;
    min-height: 200px;
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-size: 1.25rem;
    font-weight: 300;
    line-height: 1.6;
    resize: none;
    font-family: inherit;
}

textarea:focus {
    outline: none;
}

textarea::placeholder {
    color: #3f3f46;
}

.output-text {
    min-height: 200px;
    color: var(--text-primary);
    font-size: 1.25rem;
    font-weight: 300;
    line-height: 1.6;
    white-space: pre-wrap;
}

.output-text.empty {
    color: #3f3f46;
}

/* Controls */
.controls {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    margin-top: 1rem;
}

.translate-btn {
    padding: 0.875rem 3rem;
    background: var(--text-primary);
    color: var(--bg-color);
    border: none;
    border-radius: 9999px;
    font-size: 1rem;
    font-family: inherit;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 0 20px rgba(255, 255, 255, 0.1);
}

.translate-btn:hover:not(:disabled) {
    background: var(--accent-hover);
    transform: scale(1.02);
    box-shadow: 0 0 25px rgba(255, 255, 255, 0.15);
}

.translate-btn:active:not(:disabled) {
    transform: scale(0.98);
}

.translate-btn:disabled {
    background: var(--border-color);
    color: var(--text-secondary);
    cursor: not-allowed;
    box-shadow: none;
}

.loading {
    display: none;
    align-items: center;
    gap: 0.75rem;
    color: var(--text-secondary);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.loading.visible {
    display: flex;
}

.spinner {
    width: 16px;
    height: 16px;
    border: 2px solid var(--border-color);
    border-top-color: var(--text-primary);
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* Footer */
footer {
    text-align: center;
    padding: 2rem 1rem;
    color: #3f3f46;
    font-size: 0.75rem;
    margin-top: auto;
    font-weight: 400;
}