@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600;700&display=swap');

:root {
    --primary-color: #4a90e2;
    --primary-color-dark: #357ABD;
    --secondary-color: #50e3c2;
    --background-start-color: #f4f7f6;
    --background-end-color: #d4e4f7;
    --surface-color: #ffffff;
    --text-color: #333;
    --text-color-light: #888;
    --border-color: #e0e0e0;
    --error-color: #e74c3c;
    --success-color: #2ecc71;
    --font-family: 'Poppins', sans-serif;
    --shadow-color: rgba(74, 144, 226, 0.15);
}

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

body {
    font-family: var(--font-family);
    background: linear-gradient(135deg, var(--background-start-color), var(--background-end-color));
    color: var(--text-color);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    line-height: 1.6;
    overflow: hidden;
}

.login-wrapper {
    width: 100%;
    max-width: 450px;
    padding: 20px;
    position: relative;
    z-index: 1;
}

.login-card {
    background-color: var(--surface-color);
    padding: 50px;
    border-radius: 20px;
    box-shadow: 0 20px 50px var(--shadow-color);
    border: 1px solid var(--border-color);
    transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275), box-shadow 0.4s ease-in-out;
    animation: float-in 0.8s ease-out;
}

.login-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 30px 60px var(--shadow-color);
}

@keyframes float-in {
    from {
        opacity: 0;
        transform: translateY(50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.login-header {
    text-align: center;
    margin-bottom: 35px;
}

.login-logo {
    width: 90px;
    height: auto;
    margin-bottom: 20px;
    border-radius: 50%;
    padding: 5px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.login-header h1 {
    font-size: 32px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 5px;
}

.login-header p {
    color: var(--text-color-light);
    font-size: 16px;
}

.alert {
    padding: 15px;
    margin-bottom: 20px;
    border-radius: 8px;
    font-size: 14px;
    text-align: center;
    border: 1px solid transparent;
}

.alert-danger {
    background-color: #f8d7da;
    color: #721c24;
    border-color: #f5c6cb;
}

.login-form .form-group {
    margin-bottom: 25px;
    position: relative;
}

.login-form label {
    display: none; /* Modern forms often hide labels and use placeholders */
}

.login-form .input-wrapper {
    position: relative;
}

.login-form input {
    width: 100%;
    padding: 15px 20px 15px 50px; /* Add padding for icon */
    border: 1px solid var(--border-color);
    border-radius: 10px;
    font-size: 16px;
    font-family: var(--font-family);
    transition: all 0.3s ease;
    background-color: #f9fafb;
}

.login-form input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(74, 144, 226, 0.2);
    background-color: #fff;
}

.login-form .input-icon {
    position: absolute;
    left: 18px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-color-light);
    transition: color 0.3s ease;
}

.login-form input:focus + .input-icon {
    color: var(--primary-color);
}

.btn {
    display: inline-block;
    width: 100%;
    padding: 16px;
    font-size: 18px;
    font-weight: 600;
    text-align: center;
    text-transform: uppercase;
    letter-spacing: 1px;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: linear-gradient(135deg, #007bff, #0056b3);
    color: #fff;
    box-shadow: 0 5px 15px rgba(74, 144, 226, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(74, 144, 226, 0.4);
}

.btn-primary:active {
    transform: translateY(-1px);
    box-shadow: 0 4px 10px rgba(74, 144, 226, 0.3);
}

.login-footer {
    text-align: center;
    margin-top: 30px;
    font-size: 14px;
}

.login-footer a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    position: relative;
}

.login-footer a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -4px;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--secondary-color);
    transition: width 0.3s ease;
}

.login-footer a:hover::after {
    width: 100%;
}

/* Background shapes for decoration */
body::before, body::after {
    content: '';
    position: absolute;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    opacity: 0.1;
    z-index: 0;
}

body::before {
    width: 400px;
    height: 400px;
    top: -100px;
    left: -150px;
}

body::after {
    width: 300px;
    height: 300px;
    bottom: -120px;
    right: -100px;
}

/* Responsive Design */
@media (max-width: 480px) {
    .login-card {
        padding: 30px;
        border-radius: 15px;
    }

    .login-header h1 {
        font-size: 28px;
    }

    .login-logo {
        width: 80px;
    }

    .btn {
        padding: 14px;
        font-size: 16px;
    }

    body::before, body::after {
        display: none; /* Hide decorative shapes on small screens */
    }
}