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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: #0a0a0a;
    color: #ffffff;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    position: relative;
}

/* Background pattern */
body::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 80%, rgba(120, 119, 198, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(255, 119, 198, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(120, 219, 226, 0.05) 0%, transparent 50%);
    pointer-events: none;
}

/* Login container */
.login-container {
    width: 100%;
    max-width: 440px;
    position: relative;
    z-index: 1;
}

/* Login card */
.login-card {
    background: rgba(18, 18, 18, 0.95);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    padding: 40px;
    box-shadow: 
        0 20px 40px rgba(0, 0, 0, 0.3),
        0 0 0 1px rgba(255, 255, 255, 0.05);
    transition: all 0.3s ease;
}

.login-card:hover {
    box-shadow: 
        0 25px 50px rgba(0, 0, 0, 0.4),
        0 0 0 1px rgba(255, 255, 255, 0.08);
    transform: translateY(-2px);
}

/* Header section */
.login-header {
    text-align: center;
    margin-bottom: 40px;
}

.brand-title {
    font-size: 32px;
    font-weight: 700;
    color: #FF6B35;
    margin-bottom: 8px;
}

.brand-subtitle {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
    font-weight: 400;
}

/* Form container */
.login-form-container {
    width: 100%;
}

.form-title {
    font-size: 24px;
    font-weight: 600;
    color: #ffffff;
    margin-bottom: 8px;
    text-align: center;
}

.form-subtitle {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
    text-align: center;
    margin-bottom: 32px;
    line-height: 1.5;
}

/* Form styles */
.login-form {
    width: 100%;
}

.input-group {
    position: relative;
    margin-bottom: 24px;
}

.input-group input {
    width: 100%;
    height: 56px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    padding: 16px 16px 16px 52px;
    font-size: 16px;
    color: #ffffff;
    transition: all 0.3s ease;
    outline: none;
}

.input-group input::placeholder {
    color: rgba(255, 255, 255, 0.4);
}

.input-group input:focus {
    background: rgba(255, 255, 255, 0.08);
    border-color: #FF6B35;
    box-shadow: 0 0 0 3px rgba(255, 107, 53, 0.1);
}

.input-icon {
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 20px;
    color: rgba(255, 255, 255, 0.4);
    z-index: 2;
    transition: color 0.3s ease;
}

.input-group input:focus + .input-icon,
.input-group:focus-within .input-icon {
    color: #FF6B35;
}

/* Login button */
.login-btn {
    width: 100%;
    height: 56px;
    background: #FF6B35;
    border: none;
    border-radius: 12px;
    color: #ffffff;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-top: 8px;
    position: relative;
    overflow: hidden;
}

.login-btn:hover {
    background: #E55A2B;
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(255, 107, 53, 0.4);
}

.login-btn:active {
    transform: translateY(0);
}

.login-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.login-btn:hover::before {
    left: 100%;
}

/* Error message */
.error-message {
    background: rgba(255, 59, 48, 0.1);
    border: 1px solid rgba(255, 59, 48, 0.2);
    border-radius: 12px;
    padding: 16px;
    color: #FF6B6B;
    font-size: 14px;
    margin-top: 20px;
    text-align: center;
    font-weight: 500;
}

/* Responsive design */
@media (max-width: 480px) {
    .login-card {
        padding: 32px 24px;
        margin: 0 16px;
    }
    
    .brand-title {
        font-size: 28px;
    }
    
    .form-title {
        font-size: 22px;
    }
    
    .input-group input {
        height: 52px;
        padding-left: 48px;
    }
    
    .login-btn {
        height: 52px;
    }
}

/* Animation for card entrance */
@keyframes cardEntrance {
    from {
        opacity: 0;
        transform: translateY(20px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.login-card {
    animation: cardEntrance 0.6s ease-out;
}