@import url('[https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&display=swap](https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&display=swap)');

:root {
    --primary-color: #4a90e2;
    --primary-dark: #357bd9;
    --text-color: #333;
    --bg-color: #f7f9fc;
    --card-bg: #fff;
    --border-color: #e0e6ed;
    --shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
    --transition: all 0.2s ease-in-out;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    margin: 0;
    padding: 2rem;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.container {
    width: 100%;
    max-width: 900px;
}

header {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 2rem;
    margin-bottom: 2rem;
    border-bottom: 1px solid var(--border-color);
}

header h1 {
    font-size: 2rem;
    margin: 0;
    font-weight: 600;
}

header .nav-links {
    display: flex;
    align-items: center;
    gap: 1rem;
}

header a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
}

header a:hover {
    color: var(--primary-dark);
}

.card {
    background-color: var(--card-bg);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow);
    margin-bottom: 2rem;
    transition: var(--transition);
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.08);
}

form p {
    margin: 0;
    margin-bottom: 1rem;
}

form label {
    font-weight: 500;
    display: block;
    margin-bottom: 0.5rem;
}
        
form input[type="text"] {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    box-sizing: border-box;
    font-size: 1rem;
    transition: var(--transition);
}

form input[type="text"]:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(74, 144, 226, 0.2);
}

form input[type="file"] {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    box-sizing: border-box;
    font-size: 1rem;
    transition: var(--transition);
}

form button {
    background-color: var(--primary-color);
    color: white;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 600;
    transition: var(--transition);
}

form button:hover {
    background-color: var(--primary-dark);
    box-shadow: 4px 8px rgba(0, 0, 0, 0.2);
}

h2 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-top: 2rem;
    margin-bottom: 1rem;
}
        
.result-table {
    width: 100%;
    border-collapse: collapse;
    background-color: var(--card-bg);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.result-table th, .result-table td {
    border: none;
    padding: 1rem;
    text-align: left;
}

.result-table th {
    background-color: var(--bg-color);
    font-weight: 600;
}

.result-table tr:nth-child(even) {
    background-color: #f7f9fc;
}

.delete-btn {
    background-color: #e74c3c;
    color: white;
    padding: 0.5rem 1rem;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: background-color 0.2s ease-in-out;
}
        
.delete-btn:hover {
    background-color: #c0392b;
}

.message {
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 1rem;
}

.error {
    background-color: #ffebee;
    color: #d32f2f;
    border: 1px solid #ef9a9a;
}

.login-box {
    background-color: var(--card-bg);
    padding: 3rem;
    border-radius: 12px;
    box-shadow: 0 6px 16px rgba(0,0,0,0.1);
    text-align: center;
    max-width: 400px;
}

.login-box h1 {
    font-size: 2rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

.login-box p {
    color: #777;
    margin-bottom: 2rem;
}

.login-box a {
    text-decoration: none;
}