/* Header */
.header {
    text-align: center;
    margin-bottom: 50px;
}

.header-content {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 16px;
    position: relative;
}

.logo {
    font-size: clamp(2rem, 5vw, 3.5rem);
    background: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-secondary) 50%, var(--accent-tertiary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.subtitle {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-bottom: 20px;
}

.credit {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: var(--surface-1);
    border: 1px solid var(--border-1);
    border-radius: 20px;
    font-size: 0.9rem;
    color: var(--text-secondary);
    backdrop-filter: blur(10px);
    transition: all var(--transition-base);
}

.credit:hover {
    background: var(--surface-2);
    border-color: rgba(99, 102, 241, 0.4);
    transform: translateY(-2px);
}

.icon {
    font-size: 1.2rem;
}

/* Language Switcher */
.language-switcher {
    display: flex;
    gap: 4px;
    background: var(--surface-1);
    padding: 4px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-1);
    position: absolute;
    right: 0;
}

.lang-btn {
    padding: 8px 16px;
    background: transparent;
    border: none;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.lang-btn:hover {
    background: var(--surface-2);
    color: var(--text-primary);
}

.lang-btn.active {
    background: var(--accent-primary);
    color: white;
}

/* Cards */
.card {
    background: var(--surface-1);
    border: 1px solid var(--border-1);
    border-radius: var(--radius-xl);
    padding: 32px;
    backdrop-filter: blur(20px);
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-base);
}

.card:hover {
    border-color: var(--border-2);
    box-shadow: 0 24px 80px rgba(0, 0, 0, 0.4);
}

.card-title {
    font-size: 1.5rem;
    margin-bottom: 24px;
    color: var(--text-primary);
}

/* Forms */
.converter-form {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

label {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.95rem;
}

.input-field,
.select-field {
    width: 100%;
    padding: 12px 16px;
    background: var(--surface-1);
    border: 1px solid var(--border-1);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 1rem;
    font-family: 'Courier New', monospace;
    transition: all var(--transition-base);
}

.input-field:focus,
.select-field:focus {
    outline: none;
    border-color: var(--accent-primary);
    background: rgba(99, 102, 241, 0.05);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.input-hint {
    font-size: 0.85rem;
    color: var(--text-tertiary);
}

.select-field {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23e0e6f0' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 40px;
}

/* Стили для выпадающего списка */
.select-field option {
    background: var(--bg-secondary);
    color: var(--text-primary);
    padding: 12px;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

.select-field option:hover {
    background: var(--surface-2);
}

.select-field option:checked {
    background: var(--accent-primary);
    color: white;
}

/* Radio Group */
.radio-group {
    display: flex;
    gap: 12px;
}

.radio-option {
    flex: 1;
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 16px;
    background: var(--surface-1);
    border: 1px solid var(--border-1);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-base);
}

.radio-option:hover {
    background: var(--surface-2);
    border-color: rgba(99, 102, 241, 0.4);
}

.radio-option input[type="radio"] {
    accent-color: var(--accent-primary);
}

.radio-option:has(input:checked) {
    background: rgba(99, 102, 241, 0.1);
    border-color: var(--accent-primary);
}

.radio-label {
    font-size: 0.95rem;
    color: var(--text-secondary);
    transition: color var(--transition-fast);
}

.radio-option:has(input:checked) .radio-label {
    color: var(--accent-primary);
    font-weight: 600;
}

/* Buttons */
.btn {
    padding: 12px 24px;
    border: none;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn > * {
    position: relative;
    z-index: 1;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-secondary) 100%);
    color: white;
    width: 100%;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(99, 102, 241, 0.4);
}

.btn-secondary {
    background: var(--surface-2);
    color: var(--text-primary);
    border: 1px solid var(--border-1);
}

.btn-secondary:hover {
    background: var(--surface-3);
    border-color: var(--border-2);
    transform: translateY(-1px);
}

.btn-group {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.btn-icon {
    font-size: 1.1rem;
}

/* Preview Card */
.preview-card {
    display: none;
}

.preview-card.active {
    display: block;
}

.preview-content {
    background: var(--surface-1);
    border-radius: var(--radius-lg);
    padding: 20px;
}

.preview-info {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.info-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 0;
    border-bottom: 1px solid var(--border-1);
}

.info-row:last-child {
    border-bottom: none;
}

.info-label {
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.info-value {
    font-family: 'Courier New', monospace;
    color: var(--text-primary);
    font-weight: 600;
    word-break: break-all;
    text-align: right;
    max-width: 60%;
}

/* Result Card */
.result-card {
    display: none;
    grid-column: 1 / -1;
}

.result-card.active {
    display: block;
}

.result-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    flex-wrap: wrap;
    gap: 16px;
}

.result-textarea {
    width: 100%;
    min-height: 350px;
    padding: 20px;
    background: var(--surface-1);
    border: 1px solid var(--border-1);
    border-radius: var(--radius-lg);
    color: var(--text-primary);
    font-size: 0.9rem;
    font-family: 'Courier New', monospace;
    line-height: 1.6;
    resize: vertical;
    transition: all var(--transition-base);
}

.result-textarea:focus {
    outline: none;
    border-color: var(--accent-primary);
    background: rgba(99, 102, 241, 0.05);
}

/* Toast */
.toast {
    position: fixed;
    bottom: 30px;
    right: 30px;
    padding: 16px 24px;
    background: var(--success);
    color: white;
    border-radius: var(--radius-md);
    display: none;
    align-items: center;
    gap: 10px;
    box-shadow: var(--shadow-lg);
    z-index: 1000;
    font-weight: 600;
}

.toast.show {
    display: flex;
}

.toast-icon {
    font-size: 1.2rem;
}

/* Footer */
.footer {
    margin-top: 60px;
    text-align: center;
    padding: 30px 0;
    border-top: 1px solid var(--border-1);
    color: var(--text-tertiary);
    font-size: 0.9rem;
}

/* Responsive */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: 16px;
    }

    .card {
        padding: 24px;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .radio-group {
        flex-direction: column;
    }

    .result-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .btn-group {
        width: 100%;
    }

    .btn-secondary {
        flex: 1;
    }

    .toast {
        bottom: 20px;
        right: 20px;
        left: 20px;
    }
}