:root {
    --primary-color: #e67e22;
    --primary-hover: #d35400;
    --secondary-color: #2c3e50;
    --bg-color: #f4f7f6;
    --card-bg: #ffffff;
    --text-main: #333333;
    --error-bg: #f8d7da;
    --error-text: #721c24;
    --success-bg: #d4edda;
    --success-text: #155724;
    --border-color: #dddddd;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    width: 100vw;
}

.login-container {
    background: var(--card-bg);
    padding: 2.5rem;
    border-radius: 12px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
    width: 90%;
    max-width: 400px;
    animation: fadeIn 0.5s ease-in-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

.logo-wrapper {
    text-align: center;
    margin-bottom: 1rem;
}

.logo-wrapper img {
    max-width: 120px;
    height: auto;
    filter: drop-shadow(0 4px 6px rgba(0, 0, 0, 0.1));
}

h1 {
    color: var(--secondary-color);
    text-align: center;
    margin-bottom: 2rem;
    font-size: 1.6rem;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.login-error {
    padding: 0.8rem;
    border-radius: 6px;
    font-size: 0.85rem;
    text-align: center;
    margin-bottom: 1.5rem;
    border: 1px solid transparent;
    background-color: var(--error-bg);
    color: var(--error-text);
    border-color: #f5c6cb;
}

.form-group {
    margin-bottom: 1.2rem;
}

label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--secondary-color);
    font-size: 0.9rem;
    font-weight: 600;
}

input {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    transition: all 0.3s ease;
    outline: none;
}

input:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(230, 126, 34, 0.1);
}

button {
    width: 100%;
    padding: 12px;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.3s ease, transform 0.1s ease;
    margin-top: 1rem;
}

button:hover {
    background-color: var(--primary-hover);
}

button:active {
    transform: scale(0.98);
}

@media (max-width: 480px) {
    .login-container {
        padding: 1.5rem;
    }
}