/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* Body and background */
body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: #000000;
    color: #ffffff;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow-x: hidden;
}

/* Background container */
.background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: #000000;
    z-index: -1;
}

/* Main authentication container */
.auth-container {
    width: 100%;
    max-width: 450px;
    padding: 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    animation: fadeIn 0.5s ease-in;
}

/* Logo container */
.logo-container {
    margin-bottom: 40px;
    text-align: center;
}

.logo {
    max-width: 250px;
    height: auto;
    filter: drop-shadow(0 4px 20px rgba(255, 255, 255, 0.1));
    animation: logoFloat 3s ease-in-out infinite;
}

/* Logo float animation */
@keyframes logoFloat {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-10px);
    }
}

/* Fade in animation */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Authentication card */
.auth-card {
    background: rgba(20, 20, 20, 0.8);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    padding: 40px;
    width: 100%;
    backdrop-filter: blur(10px);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
    transition: all 0.3s ease;
}

.auth-card.hidden {
    display: none;
}

.auth-card h2 {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 8px;
    text-align: center;
    color: #ffffff;
}

.auth-card .subtitle {
    color: rgba(255, 255, 255, 0.6);
    text-align: center;
    margin-bottom: 32px;
    font-size: 14px;
}

/* Form styling */
form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-size: 14px;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.8);
}

.form-group input {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    padding: 12px 16px;
    font-size: 15px;
    color: #ffffff;
    transition: all 0.3s ease;
    outline: none;
}

.form-group input::placeholder {
    color: rgba(255, 255, 255, 0.3);
}

.form-group input:focus {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.3);
    box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.05);
}

/* Form options */
.form-options {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 14px;
    margin-top: -8px;
}

.checkbox-container {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    color: rgba(255, 255, 255, 0.7);
}

.checkbox-container input[type="checkbox"] {
    cursor: pointer;
}

.forgot-password {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: color 0.3s ease;
}

.forgot-password:hover {
    color: #ffffff;
}

/* Primary button */
.btn-primary {
    background: #dc0000;
    border: none;
    border-radius: 8px;
    padding: 14px 24px;
    font-size: 16px;
    font-weight: 600;
    color: #ffffff;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-top: 8px;
    box-shadow: 0 4px 15px rgba(220, 0, 0, 0.4);
}

.btn-primary:hover {
    background: #b00000;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(220, 0, 0, 0.5);
}

.btn-primary:active {
    transform: translateY(0);
    background: #900000;
}

/* Message container */
.message-container {
    padding: 12px 16px;
    border-radius: 8px;
    font-size: 14px;
    text-align: center;
    display: none;
    margin-top: 8px;
}

.message-container.success {
    display: block;
    background: rgba(34, 197, 94, 0.1);
    border: 1px solid rgba(34, 197, 94, 0.3);
    color: #4ade80;
}

.message-container.error {
    display: block;
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: #f87171;
}

/* Auth switch */
.auth-switch {
    text-align: center;
    margin-top: 24px;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
}

.auth-switch a {
    color: #dc0000;
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s ease;
}

.auth-switch a:hover {
    color: #b00000;
}

/* Responsive design */
@media (max-width: 480px) {
    .auth-container {
        padding: 16px;
    }

    .logo {
        max-width: 200px;
    }

    .auth-card {
        padding: 30px 24px;
    }

    .auth-card h2 {
        font-size: 24px;
    }

    .form-group input {
        padding: 10px 14px;
    }
}