:root {
    --primary: #0f394c;
    --primary-dark: #49b5e7;
    --secondary: #3f37c9;
    --light: #f8f9fa;
    --dark: #212529;
    --gray: #6c757d;
    --success: #4cc9f0;
}

body {
    font-family: 'Poppins', sans-serif;
    background-color: #f5fbff;
    line-height: 1.6;
}

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

.header-hero {
    text-align: center;
    margin-bottom: 2.5rem;
}

h1 {
    font-weight: 700;
}

.subtitle {
    color: var(--gray);
    font-weight: 300;
    font-size: 1.1rem;
}

.card {
    background: white;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    padding: 2rem;
    margin-bottom: 2rem;
}

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

label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--dark);
}

input, textarea, select {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid #e1e5ee;
    border-radius: 6px;
    font-family: inherit;
    font-size: 1rem;
    transition: all 0.3s;
}

input:focus, textarea:focus, select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(67, 97, 238, 0.1);
}

textarea {
    min-height: 100px;
    resize: vertical;
}

.range-container {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.range-value {
    font-weight: 600;
    color: var(--primary);
    min-width: 30px;
    text-align: center;
}

input[type="range"] {
    flex: 1;
    padding: 0;
    -webkit-appearance: none;
    height: 8px;
    background: #e1e5ee;
    border-radius: 4px;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 20px;
    height: 20px;
    background: var(--primary);
    border-radius: 50%;
    cursor: pointer;
}

.btn {
    display: inline-block;
    background: var(--primary);
    color: white;
    border: none;
    border-radius: 6px;
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s;
}

.btn:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    color: #fff;
}

.btn-block {
    display: block;
    width: 100%;
}

.result-container {
    position: relative;
}

.copy-btn {
    position: absolute;
    top: 10px;
    right: 10px;
    background: #49b5e7;
    color: #fff;
    border: none;
    border-radius: 4px;
    padding: 0.25rem 0.5rem;
    font-size: 0.8rem;
    cursor: pointer;
    transition: all 0.2s;
}

.copy-btn:hover {
    background: #0f394c;
}

.info-text {
    font-size: 0.9rem;
    color: var(--gray);
    margin-top: 0.5rem;
}

.features {
    display: grid;
    gap: 1.5rem;
    grid-template-columns: 1fr;
}

@media (min-width: 600px) {
    .features {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 900px) {
    .features {
        grid-template-columns: repeat(3, 1fr);
    }
}


.feature {
    background: white;
    border-radius: 8px;
    padding: 1.5rem;
    box-shadow: 0 5px 30px 0 rgba(0, 0, 0, 0.1);
}

.feature h3 {
    color: var(--primary);
    margin-bottom: 0.5rem;
}

.feature p {
    font-size: 0.9rem;
    color: var(--gray);
    margin: 0;
}

.content .footer-bottom {
    text-align: center;
    margin-top: 2rem;
    color: var(--gray);
    font-size: 0.9rem;
}

@media (max-width: 600px) {
    .content .container {
        padding: 1.5rem;
    }
}