:root {
    --primary-color: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #3b82f6;
    --accent-color: #10b981;
    --danger-color: #ef4444;
    --border-color: #e5e7eb;
    --background-light: #f8fafc;
    --white: #ffffff;
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --input-bg: #f9fafb;
    --input-focus: #2563eb;
}

body, html {
    min-height: 100vh;
    font-family: 'Inter', 'Poppins', Arial, sans-serif;
    background: var(--background-light);
    margin: 0;
}

.login-bg {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--background-light), var(--white));
}

.form-container {
    background: var(--white);
    box-shadow: var(--shadow-lg);
    border-radius: 20px;
    padding: 2.5rem 2rem;
    min-width: 340px;
    max-width: 400px;
    width: 100%;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.login-logo {
    width: 80px;
    /* margin-bottom: 1.5rem; */
}

.login-title {
    font-family: 'Poppins', sans-serif;
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 2rem;
    letter-spacing: 1px;
}

.login-form {
    width: 100%;
}

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

.form-label {
    font-weight: 500;
    font-size: 1rem;
    color: var(--primary-dark);
    margin-bottom: 0.5rem;
    display: block;
}

.form-input {
    width: 90%;
    padding: 0.85rem 1rem;
    font-size: 1rem;
    border: 2px solid var(--border-color);
    border-radius: 12px;
    background: var(--input-bg);
    font-family: inherit;
    transition: border-color 0.3s, box-shadow 0.3s;
    margin-bottom: 0.3rem;
}

.form-input:focus {
    outline: none;
    border-color: var(--input-focus);
    background: var(--white);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.13);
}

.form-hint {
    display: block;
    color: #6b7280;
    font-size: 0.95rem;
    margin-top: 0.1rem;
}

.default-password {
    color: var(--accent-color);
    font-weight: 600;
}

.login-btn {
    width: 100%;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: var(--white);
    border: none;
    padding: 1rem;
    border-radius: 12px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    margin-top: 0.5rem;
    box-shadow: 0 2px 8px rgba(37,99,235,0.09);
    transition: background 0.2s, transform 0.2s;
}

.login-btn:hover {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary-color));
    transform: translateY(-2px) scale(1.02);
}

@media (max-width: 500px) {
    .form-container {
        padding: 1.5rem 1rem;
        min-width: unset;
        max-width: 98vw;
    }
    .login-logo {
        width: 140px;
    }
    .login-title {
        font-size: 1.4rem;
    }
}