body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #0a0e17;
    color: #e0e0e0;
    line-height: 1.6;
    margin: 0;
    padding: 0;
}

header {
    background: linear-gradient(135deg, #0045f4, #152642);
    color: white;
    text-align: center;
    padding: 1.5rem 0;
    position: relative;
    border-bottom: 1px solid #044dea;
}

header h1 {
    margin: 0;
    font-size: 2rem;
    color: #4a7eff;
}

.back-btn {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: #a0bcf8;
    text-decoration: none;
    font-weight: bold;
    padding: 0.5rem 1rem;
    border-radius: 5px;
    transition: background-color 0.3s;
    border: 1px solid #2a3e6d;
}

.back-btn:hover {
    background-color: rgba(74, 126, 255, 0.2);
    color: #ffffff;
}

.converter-container {
    max-width: 800px;
    margin: 2rem auto;
    padding: 0 1rem;
}

.converter {
    background: #121826;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
    margin-bottom: 2rem;
    border: 1px solid #1c2a45;
}

.input-section {
    margin-bottom: 2rem;
}

.input-group {
    margin-bottom: 1.5rem;
}

.input-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: #a0bcf8;
}

.input-group input {
    width: 100%;
    padding: 0.8rem;
    background-color: #0d1424;
    border: 1px solid #253662;
    border-radius: 5px;
    font-size: 1.2rem;
    color: #ffffff;
}

.currency-selectors {
    display: flex;
    align-items: flex-end;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.currency-selector {
    flex: 1;
}

.currency-selector label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: #a0bcf8;
}

.currency-selector select {
    width: 100%;
    padding: 0.8rem;
    background-color: #0d1424;
    border: 1px solid #253662;
    border-radius: 5px;
    font-size: 1rem;
    color: #ffffff;
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%234a7eff' viewBox='0 0 16 16'%3E%3Cpath d='M7.247 11.14 2.451 5.658C1.885 5.013 2.345 4 3.204 4h9.592a1 1 0 0 1 .753 1.659l-4.796 5.48a1 1 0 0 1-1.506 0z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.8rem center;
    background-size: 12px;
}

.currency-selector select option {
    background-color: #121826;
    color: #ffffff;
    padding: 0.5rem;
}

.swap-btn {
    background: #0d1b3e;
    color: #4a7eff;
    border: 1px solid #253662;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s;
    margin-bottom: 0.5rem;
}

.swap-btn:hover {
    background: #4a7eff;
    color: #0d1b3e;
    transform: rotate(180deg);
}

button {
    background: linear-gradient(135deg, #0d1b3e, #152642);
    color: #a0bcf8;
    border: 1px solid #253662;
    padding: 1rem 1.5rem;
    border-radius: 5px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    width: 100%;
    transition: all 0.3s;
}

button:hover {
    background: linear-gradient(135deg, #152642, #1e3259);
    color: #ffffff;
    transform: translateY(-2px);
    box-shadow: 0 5px 10px rgba(0, 0, 0, 0.3);
}

.result-section {
    background: #0d1424;
    padding: 1.5rem;
    border-radius: 8px;
    border: 1px solid #1c2a45;
}

.result-card {
    text-align: center;
    margin-bottom: 1.5rem;
}

.result-card p {
    margin: 0;
    color: #a0bcf8;
    font-size: 1rem;
}

.result-card h3 {
    margin: 0.5rem 0 0;
    color: #4a7eff;
    font-size: 2rem;
}

.country-info {
    display: grid;
    grid-template-columns: auto 1fr auto 1fr;
    align-items: center;
    gap: 0.5rem 1rem;
    margin-bottom: 1.5rem;
    padding: 1rem;
    background-color: rgba(13, 27, 62, 0.5);
    border-radius: 8px;
}

.country-flag {
    width: 32px;
    height: 24px;
    background-size: cover;
    background-position: center;
    border-radius: 3px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.country-name {
    color: #a0bcf8;
    font-size: 0.9rem;
}

.rate-info {
    text-align: center;
    color: #a0bcf8;
    font-size: 0.9rem;
}

.rate-info p {
    margin: 0.3rem 0;
}

.chart-container {
    background: #121826;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
    height: 300px;
    border: 1px solid #1c2a45;
}

@media (max-width: 768px) {
    .currency-selectors {
        flex-direction: column;
        align-items: stretch;
    }
    
    .swap-btn {
        align-self: center;
        margin: 0.5rem 0;
    }
    
    header h1 {
        font-size: 1.5rem;
    }
    
    .country-info {
        grid-template-columns: auto 1fr;
        text-align: center;
    }
    
    #to-flag, #to-country {
        margin-top: 0.5rem;
    }
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #0a0e17;
    color: #e0e0e0;
    line-height: 1.6;
    margin: 0;
    padding: 0;
}

header {
    background: linear-gradient(135deg, #0d1b3e, #152642);
    color: white;
    text-align: center;
    padding: 1.5rem 0;
    position: relative;
    border-bottom: 1px solid #1e2b48;
}

header h1 {
    margin: 0;
    font-size: 2rem;
    color: #4a7eff;
}

.back-btn {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: #a0bcf8;
    text-decoration: none;
    font-weight: bold;
    padding: 0.5rem 1rem;
    border-radius: 5px;
    transition: background-color 0.3s;
    border: 1px solid #2a3e6d;
}

.back-btn:hover {
    background-color: rgba(74, 126, 255, 0.2);
    color: #ffffff;
}

.converter-container {
    max-width: 800px;
    margin: 2rem auto;
    padding: 0 1rem;
}

.converter {
    background: #121826;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
    margin-bottom: 2rem;
    border: 1px solid #1c2a45;
}

.input-section {
    margin-bottom: 2rem;
}

.input-group {
    margin-bottom: 1.5rem;
}

.input-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: #a0bcf8;
}

.input-group input {
    width: 100%;
    padding: 0.8rem;
    background-color: #0d1424;
    border: 1px solid #253662;
    border-radius: 5px;
    font-size: 1.2rem;
    color: #ffffff;
}

.currency-selectors {
    display: flex;
    align-items: flex-end;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.currency-selector {
    flex: 1;
}

.currency-selector label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: #a0bcf8;
}

.currency-selector select {
    width: 100%;
    padding: 0.8rem;
    background-color: #0d1424;
    border: 1px solid #253662;
    border-radius: 5px;
    font-size: 1rem;
    color: #ffffff;
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%234a7eff' viewBox='0 0 16 16'%3E%3Cpath d='M7.247 11.14 2.451 5.658C1.885 5.013 2.345 4 3.204 4h9.592a1 1 0 0 1 .753 1.659l-4.796 5.48a1 1 0 0 1-1.506 0z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.8rem center;
    background-size: 12px;
}

.currency-selector select option {
    background-color: #121826;
    color: #ffffff;
    padding: 0.5rem;
}

.swap-btn {
    background: #0d1b3e;
    color: #4a7eff;
    border: 1px solid #253662;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s;
    margin-bottom: 0.5rem;
}

.swap-btn:hover {
    background: #4a7eff;
    color: #0d1b3e;
    transform: rotate(180deg);
}

button {
    background: linear-gradient(135deg, #0d1b3e, #152642);
    color: #a0bcf8;
    border: 1px solid #253662;
    padding: 1rem 1.5rem;
    border-radius: 5px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    width: 100%;
    transition: all 0.3s;
}

button:hover {
    background: linear-gradient(135deg, #152642, #1e3259);
    color: #ffffff;
    transform: translateY(-2px);
    box-shadow: 0 5px 10px rgba(0, 0, 0, 0.3);
}

.result-section {
    background: #0d1424;
    padding: 1.5rem;
    border-radius: 8px;
    border: 1px solid #1c2a45;
}

.result-card {
    text-align: center;
    margin-bottom: 1.5rem;
}

.result-card p {
    margin: 0;
    color: #a0bcf8;
    font-size: 1rem;
}

.result-card h3 {
    margin: 0.5rem 0 0;
    color: #4a7eff;
    font-size: 2rem;
}

.country-info {
    display: grid;
    grid-template-columns: auto 1fr auto 1fr;
    align-items: center;
    gap: 0.5rem 1rem;
    margin-bottom: 1.5rem;
    padding: 1rem;
    background-color: rgba(13, 27, 62, 0.5);
    border-radius: 8px;
}

.country-flag {
    width: 32px;
    height: 24px;
    background-size: cover;
    background-position: center;
    border-radius: 3px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.country-name {
    color: #a0bcf8;
    font-size: 0.9rem;
}

.rate-info {
    text-align: center;
    color: #a0bcf8;
    font-size: 0.9rem;
}

.rate-info p {
    margin: 0.3rem 0;
}

.chart-container {
    background: #121826;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
    height: 300px;
    border: 1px solid #1c2a45;
}

@media (max-width: 768px) {
    .currency-selectors {
        flex-direction: column;
        align-items: stretch;
    }
    
    .swap-btn {
        align-self: center;
        margin: 0.5rem 0;
    }
    
    header h1 {
        font-size: 1.5rem;
    }
    
    .country-info {
        grid-template-columns: auto 1fr;
        text-align: center;
    }
    
    #to-flag, #to-country {
        margin-top: 0.5rem;
    }
}