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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #0a1a2a 0%, #0f2a3a 50%, #1a3a4a 100%);
    min-height: 100vh;
    color: #ffffff;
    overflow-x: hidden;
}

/* Header */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    background: rgba(0, 0, 0, 0.3);
}

.logo {
    display: flex;
    align-items: center;
    font-size: 1.8rem;
    font-weight: bold;
    color: #00d395;
}

.header-buttons {
    display: flex;
    gap: 1rem;
}

.btn {
    padding: 0.8rem 1.5rem;
    border: none;
    border-radius: 6px;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-block;
    text-align: center;
}

.btn-login {
    background: transparent;
    border: 1px solid #00d395;
    color: #00d395;
}

.btn-login:hover {
    background: #00d395;
    color: #ffffff;
}

.btn-signup {
    background: #00d395;
    color: #ffffff;
}

.btn-signup:hover {
    background: #00b882;
}

/* Main Container */
.main-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: calc(100vh - 80px);
    padding: 2rem;
}

.auth-container {
    background: rgba(25, 45, 60, 0.9);
    border-radius: 12px;
    padding: 3rem;
    width: 100%;
    max-width: 450px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(0, 211, 149, 0.2);
}

.auth-title {
    font-size: 2rem;
    text-align: center;
    margin-bottom: 0.5rem;
    color: #ffffff;
}

.auth-subtitle {
    text-align: center;
    color: #a0b0c0;
    margin-bottom: 2rem;
    font-size: 1rem;
}

/* Form Styles */
.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    color: #ffffff;
    font-weight: 500;
}

.form-input {
    width: 100%;
    padding: 1rem;
    background: rgba(15, 30, 45, 0.8);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 6px;
    color: #ffffff;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-input::placeholder {
    color: #7a8a9a;
}

.form-input:focus {
    outline: none;
    border-color: #00d395;
    box-shadow: 0 0 0 2px rgba(0, 211, 149, 0.2);
}

.input-group {
    position: relative;
}

.input-icon {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: #7a8a9a;
    font-size: 1.2rem;
}

.input-group .form-input {
    padding-left: 3rem;
}

/* Checkbox */
.checkbox-group {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.checkbox-group input[type="checkbox"] {
    accent-color: #00d395;
}

.checkbox-group label {
    font-size: 0.9rem;
    color: #a0b0c0;
}

.checkbox-group a {
    color: #00d395;
    text-decoration: none;
}

.checkbox-group a:hover {
    text-decoration: underline;
}

/* Submit Button */
.submit-btn {
    width: 100%;
    padding: 1rem;
    background: #00d395;
    color: #ffffff;
    border: none;
    border-radius: 6px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-bottom: 1.5rem;
}

.submit-btn:hover {
    background: #00b882;
    transform: translateY(-1px);
}

/* Footer Text */
.auth-footer {
    text-align: center;
    color: #a0b0c0;
    font-size: 0.9rem;
}

.auth-footer a {
    color: #00d395;
    text-decoration: none;
    font-weight: 600;
}

.auth-footer a:hover {
    text-decoration: underline;
}

/* Additional Elements */
.forgot-password {
    text-align: right;
    margin-bottom: 1.5rem;
}

.forgot-password a {
    color: #00d395;
    text-decoration: none;
    font-size: 0.9rem;
}

.forgot-password a:hover {
    text-decoration: underline;
}

.upline-text {
    text-align: center;
    color: #a0b0c0;
    margin-bottom: 1rem;
    font-size: 0.9rem;
}

/* Error/Success Messages */
.alert {
    padding: 1rem;
    border-radius: 6px;
    margin-bottom: 1.5rem;
    font-size: 0.9rem;
}

.alert-error {
    background: rgba(255, 59, 107, 0.1);
    border: 1px solid rgba(255, 59, 107, 0.3);
    color: #ff3b6b;
}

.alert-success {
    background: rgba(0, 211, 149, 0.1);
    border: 1px solid rgba(0, 211, 149, 0.3);
    color: #00d395;
}

/* Mobile Responsiveness */
@media (max-width: 768px) {
    .header {
        padding: 1rem;
    }
    
    .logo {
        font-size: 1.5rem;
    }
    
    .header-buttons {
        gap: 0.5rem;
    }
    
    .btn {
        padding: 0.6rem 1rem;
        font-size: 0.9rem;
    }
    
    .main-container {
        padding: 1rem;
    }
    
    .auth-container {
        padding: 2rem;
    }
    
    .auth-title {
        font-size: 1.8rem;
    }
}

@media (max-width: 480px) {
    .auth-container {
        padding: 1.5rem;
    }
    
    .auth-title {
        font-size: 1.6rem;
    }
    
    .form-input {
        padding: 0.8rem;
    }
    
    .input-group .form-input {
        padding-left: 2.5rem;
    }
}