/* Asosiy stillar */
body {
    background-color: #f0f2f5;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: #1a1f36;
}

/* Karta (card) stillari */
.converter-card {
    box-shadow: 0 8px 16px rgba(152, 19, 19, 0.08);
    border-radius: 20px;
    border: none;
    background-color: #ffffff;
    transition: all 0.3s ease;
    margin-bottom: 2rem;
}

.converter-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 20px rgba(0, 0, 0, 0.12);
}

/* Sarlavha stillari */
h2, h3 {
    color: #2d3748;
    font-weight: 600;
    letter-spacing: -0.5px;
}

/* Forma elementlari */
.form-control, .form-select {
    border-radius: 12px;
    border: 2px solid #e2e8f0;
    padding: 12px 16px;
    font-size: 1rem;
    transition: all 0.25s ease;
    background-color: #f8fafc;
}

.form-control:focus, 
.form-select:focus {
    border-color: #4f46e5;
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.15);
    background-color: #ffffff;
}

/* Yorliqlar */
.form-label {
    font-weight: 500;
    color: #4a5568;
    margin-bottom: 0.75rem;
    font-size: 0.95rem;
}

/* Almashtirish tugmasi */
#swapBtn {
    width: 48px;
    height: 48px;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    border: 2px solid #4f46e5;
    color: #4f46e5;
    background-color: #ffffff;
    transition: all 0.3s ease;
}

#swapBtn:hover {
    background-color: #4f46e5;
    color: white;
    transform: rotate(180deg) scale(1.1);
}

/* Natija qismi */
#result {
    font-weight: 700;
    color: #4f46e5;
    font-size: 1.5rem;
    padding: 1.5rem;
    background-color: #f8fafc;
    border-radius: 16px;
    text-align: center;
}

/* Oxirgi yangilanish vaqti */
#lastUpdated {
    color: #64748b;
    font-size: 0.875rem;
    margin-top: 0.5rem;
}

/* Grafik konteyner */
.chart-container {
    position: relative;
    height: 350px;
    width: 100%;
    margin-top: 1.5rem;
    padding: 1rem;
    background-color: #ffffff;
    border-radius: 16px;
}

/* Xatolik xabari */
.error-message {
    color: #ef4444;
    font-size: 0.925rem;
    margin-top: 0.75rem;
    text-align: center;
    padding: 0.75rem;
    background-color: #fef2f2;
    border-radius: 12px;
}

/* Muvaffaqiyat xabari */
.success-message {
    color: #10b981;
    font-size: 0.925rem;
    margin-top: 0.75rem;
    text-align: center;
    padding: 0.75rem;
    background-color: #f0fdf4;
    border-radius: 12px;
}

/* Yuklash holati */
.loading {
    opacity: 0.6;
    pointer-events: none;
    position: relative;
}

.loading::after {
    content: "";
    position: absolute;
    top: 50%;
    left: 50%;
    width: 24px;
    height: 24px;
    margin: -12px;
    border: 3px solid #4f46e5;
    border-top-color: transparent;
    border-radius: 50%;
    animation: loading-spinner 0.8s linear infinite;
}

@keyframes loading-spinner {
    to {
        transform: rotate(360deg);
    }
}

/* Mobil moslamalar uchun */
@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }
    
    .converter-card {
        margin: 1rem;
        border-radius: 16px;
    }
    
    .chart-container {
        height: 280px;
    }
    
    #result {
        font-size: 1.25rem;
        padding: 1rem;
    }
}