:root {
    --bg-color: #121214;
    --card-bg: #1D1D1E;
    --button-color: #4654C0;
    --button-hover: #3a46a8;
    --text-color: #f5f5f5;
    --text-secondary: #b0b0b0;
    --input-bg: #2a2a2d;
    --input-border: #3d3d40;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Poppins', sans-serif;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    min-height: 100vh;
    padding: 20px;
    line-height: 1.6;
}

.container {
    max-width: 1000px;
    margin: 0 auto;
}

header {
    text-align: center;
    margin-bottom: 40px;
}

footer {
    text-align: center;
    margin-bottom: 40px;
}

.logo {
    max-width: 200px;
    margin-bottom: 15px;
}

p.subtitle {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

.card {
    background-color: var(--card-bg);
    border-radius: 12px;
    padding: 25px;
    margin-bottom: 25px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    transition: transform 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
}

h2 {
    margin-bottom: 20px;
    color: var(--text-color);
    font-weight: 500;
    font-size: 1.5rem;
    position: relative;
    padding-bottom: 8px;
}

h2::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 50px;
    height: 3px;
    background-color: var(--button-color);
    border-radius: 3px;
}

.input-group {
    margin-bottom: 20px;
}

label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text-color);
}

input, select {
    width: 100%;
    padding: 12px 15px;
    background-color: var(--input-bg);
    border: 1px solid var(--input-border);
    border-radius: 8px;
    font-size: 1rem;
    color: var(--text-color);
    transition: border-color 0.3s;
}

input:focus, select:focus {
    outline: none;
    border-color: var(--button-color);
}

button {
    background-color: var(--button-color);
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 500;
    transition: all 0.3s;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
}

button:hover {
    background-color: var(--button-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
}

.result-container {
    margin-top: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.result {
    flex-grow: 1;
    padding: 12px 15px;
    background-color: var(--input-bg);
    border-radius: 8px;
    word-break: break-all;
    border: 1px solid var(--input-border);
}

.result {
    flex-grow: 1;
    padding: 12px 15px;
    background-color: var(--input-bg);
    border-radius: 8px;
    word-break: break-all;
    border: 1px solid var(--input-border);
    min-height: 50px;
    display: flex;
    align-items: center;
    transition: all 0.3s ease;
}

.result.preview {
    color: var(--text-secondary);
    font-style: italic;
}

.result.final {
    color: var(--text-color);
    font-style: normal;
}

.copy-btn {
    padding: 12px 15px;
    min-width: 90px;
}

.options {
    display: flex;
    gap: 20px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.option-item {
    display: flex;
    align-items: center;
    gap: 8px;
}

.option-item input[type="checkbox"] {
    width: auto;
    accent-color: var(--button-color);
}

.ip-display {
    text-align: center;
    font-size: 1.2rem;
    margin: 30px 0;
    padding: 20px;
    background-color: var(--card-bg);
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.phone-input-container {
    display: flex;
    align-items: center;
    gap: 15px;
}

.country-select {
    flex: 0 0 150px;
    position: relative;
}

.country-select select {
    padding-left: 45px;
    appearance: none;
}

.country-flag {
    position: absolute;
    left: 15px;
    top: 50%;
    transform: translateY(-50%);
    pointer-events: none;
    font-size: 1.2rem;
}

.phone-number-input {
    flex-grow: 1;
}

.preview-link {
    margin-top: 10px;
    font-size: 0.9rem;
    color: var(--text-secondary);
    word-break: break-all;
}

@media (max-width: 768px) {
    .options {
        flex-direction: column;
        gap: 15px;
    }
    
    .phone-input-container {
        flex-direction: column;
        align-items: stretch;
        gap: 10px;
    }
    
    .country-select {
        flex: 1;
    }
}