/* Base Styles */
:root {
    --primary: #2563eb;
    --secondary: #1e40af;
    --dark: #1e293b;
    --light: #f8fafc;
    --gray: #94a3b8;
    --danger: #dc2626;
    --success: #16a34a;
    --transition: all 0.3s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
    color: var(--dark);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    line-height: 1.6;
}

.container {
    width: 100%;
    max-width: 800px;
    padding: 2rem;
}

/* Header */
header {
    text-align: center;
    margin-bottom: 2rem;
}

header h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
    color: var(--primary);
}

header p {
    color: var(--gray);
    font-size: 1.1rem;
}

/* Converter Card */
.converter-card {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    margin-bottom: 2rem;
}

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

.temp-input {
    width: 100%;
    padding: 1rem;
    padding-right: 3rem;
    font-size: 1.1rem;
    border: 2px solid #e2e8f0;
    border-radius: 8px;
    transition: var(--transition);
}

.temp-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.2);
}

.temp-icon {
    position: absolute;
    right: 1rem;
    top: 50%;
    transform: translateY(-50%);
    font-size: 1.2rem;
    color: var(--gray);
}

.conversion-buttons {
    display: flex;
    gap: 1rem;
    margin: 1.5rem 0;
    flex-wrap: wrap;
}

.convert-btn, .reset-btn {
    padding: 0.8rem 1.5rem;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.convert-btn {
    background: var(--primary);
    color: white;
    flex: 1;
    justify-content: center;
}

.convert-btn:hover {
    background: var(--secondary);
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(37, 99, 235, 0.3);
}

.reset-btn {
    background: var(--danger);
    color: white;
}

.reset-btn:hover {
    background: #b91c1c;
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(220, 38, 38, 0.3);
}

/* Conversion Table */
.conversion-table {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.conversion-table h2 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    color: var(--primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

table {
    width: 100%;
    border-collapse: collapse;
}

th, td {
    padding: 1rem;
    text-align: center;
    border: 1px solid #e2e8f0;
}

th {
    background: var(--primary);
    color: white;
}

tr:nth-child(even) {
    background: #f8fafc;
}

/* Footer */
footer {
    text-align: center;
    margin-top: 2rem;
    color: var(--gray);
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-top: 1rem;
}

.social-links a {
    color: var(--primary);
    font-size: 1.5rem;
    transition: var(--transition);
}

.social-links a:hover {
    color: var(--secondary);
    transform: translateY(-3px);
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }
    
    header h1 {
        font-size: 2rem;
    }
    
    .conversion-buttons {
        flex-direction: column;
    }
    
    th, td {
        padding: 0.75rem 0.5rem;
        font-size: 0.9rem;
    }
}

@media (max-width: 480px) {
    header h1 {
        font-size: 1.8rem;
    }
    
    .temp-input {
        padding: 0.8rem;
        padding-right: 2.5rem;
    }
    
    .temp-icon {
        right: 0.8rem;
    }
}