@import url('https://fonts.googleapis.com/css2?family=Nunito:wght@400;600;700;800&display=swap');
:root {
    --primary-color: #0d6efd;
    --dark-text: #212529;
    --light-text: #6c757d;
}
body {
    font-family: 'Nunito', sans-serif;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    margin: 0;
}
.auth-container {
    width: 100%;
    max-width: 450px;
    padding: 20px;
}
.auth-box {
    background: #fff;
    padding: 40px;
    border-radius: 16px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}
.auth-header { text-align: center; margin-bottom: 30px; }
.auth-header h2 { font-size: 28px; font-weight: 800; margin: 0 0 10px 0; }
.auth-header p { color: var(--light-text); margin: 0; }
.form-group { position: relative; margin-bottom: 30px; }
.form-group input {
    width: 100%;
    border: 0;
    border-bottom: 2px solid #ccc;
    padding: 10px 0;
    background: transparent;
    font-size: 16px;
    transition: border-color 0.3s;
    box-sizing: border-box;
}
.form-group input:focus { outline: none; border-bottom-color: var(--primary-color); }
.form-group label {
    position: absolute;
    top: 10px;
    left: 0;
    color: var(--light-text);
    transition: all 0.3s;
    pointer-events: none;
}
.form-group input:focus ~ label, 
.form-group input:not(:placeholder-shown) ~ label {
    top: -20px;
    font-size: 12px;
    color: var(--primary-color);
}
.btn-primary {
    width: 100%;
    padding: 15px;
    border-radius: 8px;
    font-size: 16px;
    background-color: var(--primary-color);
    color: #fff;
    border: none;
    cursor: pointer;
    font-weight: 700;
}
.auth-footer { text-align: center; margin-top: 25px; }
.auth-footer p { color: var(--light-text); margin-bottom: 15px; }
.auth-footer a { color: var(--primary-color); font-weight: 700; text-decoration: none; }
.back-to-home { font-size: 14px; display: inline-block; margin-top: 10px; }
.back-to-home i { margin-right: 5px; }
.alert { padding: 15px; margin-bottom: 20px; border-radius: 6px; text-align: center; }
.alert-danger { background-color: #fdecea; color: #f44336; }